Wiki source code of Water Quality Sensors

Last modified by Karry Zhuang on 2025/07/18 16:37

version	line-number	content
1.1	1	Table of Contents:
	2
62.3	3	{{toc/}}
1.1	4
	5
45.2	6
	7
71.3	8	= 1. DR-EC Water EC Probe =
7.1	9
	10	== 1.1 Specification: ==
	11
45.2	12
7.1	13	* Power Input: DC7~~30
45.63	14
7.1	15	* Power Consumption : < 0.5W
45.63	16
7.1	17	* Interface: RS485. 9600 Baud Rate
45.63	18
7.1	19	* EC Range & Resolution:
72.1	20	ECK1.0 :** 0 ~~ 2,000 μS/cm Resolution: 1 μS/cm
	21	ECK10.0 : **10 ~~ 20,000 μS/cm Resolution: 10 μS/cm
	22	EC200 : **1 ~~ 200,000 μS/cm Resolution: 1 μS/cm
74.1	23	* Probe Electrode：
73.2	24	ECK1.0 :** K1 Electrode
	25	ECK10.0 :** K10 Electrode
	26	EC200 :** FourElectrode
71.5	27	* EC Accuracy: ±1% FS
71.4	28	* Salinity measurement range
71.9	29	EC200 :**0~~70PSU Resolution: 0.1PSU
71.5	30	* Temperature measurement range
71.9	31	ECK1/ECK10:**-20~~+60℃; Resolution: 0.1℃
	32	EC200 :**-5~~+80℃; Resolution: 0.1℃
7.1	33	* Temperature Accuracy: ±0.5 °C
71.8	34	* Temperature compensation range
71.9	35	ECK1/ECK10:**0~~+60℃ (default compensation temperature 25℃)
	36	EC200:**-5~~+80℃ (default compensation temperature 25℃)
	37	* Temperature compensation coefficient:Default 0.2
59.1	38	* Working environment:
	39	** Ambient Temperature: 0–60°C
	40	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
75.1	41	** EC200 Continuous monitoring of cross-section water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food, tap water, seawater and other high conductivity environments
7.1	42	* IP Rated: IP68
	43	* Max Pressure: 0.6MPa
	44
	45	== 1.2 Application for Different Range ==
	46
45.2	47
62.3	48	[[image:image-20240714173018-1.png]]
7.1	49
	50
	51	== 1.3 Wiring ==
	52
45.2	53
62.3	54	[[image:image-20241129142314-1.png\|\|height="352" width="1108"]]
7.1	55
45.1	56
7.1	57	== 1.4 Mechinical Drawing ==
	58
72.2	59	ECK1 and ECK10 EC200
45.2	60
7.1	61
62.3	62	[[image:image-20240714174241-2.png]] [[image:1752564223905-283.png\|\|height="399" width="160"]]
7.1	63
60.4	64
7.1	65	== 1.5 Installation ==
	66
	67
45.2	68	Electrode installation form:
15.2	69
45.2	70	A: Side wall installation
15.2	71
45.2	72	B: Top flange installation
15.2	73
45.2	74	C: Pipeline bend installation
15.2	75
45.2	76	D: Pipeline bend installation
15.2	77
45.2	78	E: Flow-through installation
15.2	79
45.2	80	F: Submerged installation
15.2	81
62.3	82	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	83
18.1	84	Several common installation methods of electrodes
15.2	85
18.1	86	When installing the sensor on site, you should strictly follow the correct installation method shown in the following picture. Incorrect installation method will cause data deviation.
15.2	87
18.1	88	A. Several common incorrect installation methods
15.2	89
62.3	90	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	91
45.2	92	Error cause: The electrode joint is too long, the extension part is too short, the sensor is easy to form a dead cavity, resulting in measurement error.
15.2	93
62.3	94	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	95
45.2	96	Error cause: Measurement error or instability may occur due to water flow not being able to fill the pipe or air accumulation at high altitudes.
18.1	97
	98	B. Correct installation method
	99
62.3	100	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	101
	102
38.1	103	== 1.6 Maintenance ==
7.1	104
	105
26.1	106	* The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
45.66	107
26.1	108	* If the electrode is not used for a long time, it can generally be stored in a dry place, but it must be placed (stored) in distilled water for several hours before use to activate the electrode. Electrodes that are frequently used can be placed (stored) in distilled water.
45.66	109
26.1	110	* Cleaning of conductivity electrodes: Organic stains on the electrode can be cleaned with warm water containing detergent, or with alcohol. Calcium and magnesium precipitates are best cleaned with 10% citric acid. The electrode plate or pole can only be cleaned by chemical methods or by shaking in water. Wiping the electrode plate will damage the coating (platinum black) on the electrode surface.
45.66	111
26.1	112	* The equipment should be calibrated before each use. It is recommended to calibrate it every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.).
15.2	113
8.1	114	== 1.7 RS485 Commands ==
	115
15.2	116
	117	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	118	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	119
73.1	120	(% style="color:red" %)The following commands are by default for ECK1/ECK10.
15.2	121
73.1	122	(% style="color:red" %)Please note that EC200 has different commands.
72.18	123
16.1	124	=== 1.7.1 Query address ===
8.1	125
11.1	126
45.48	127	send:
45.2	128
	129	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	130	\|=(% style="width: 74.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity low\|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 high
45.32	131	\|(% style="width:99px" %)0XFE \|(% style="width:72px" %)0X03\|(% style="width:50px" %)0X00\|(% style="width:42px" %)0X50\|(% style="width:42px" %)0X00\|(% style="width:42px" %)0X00\|(% style="width:56px" %)0X51\|(% style="width:56px" %)0XD4
16.1	132
	133	If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
	134
	135
45.48	136	response:
16.1	137
45.14	138	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	139	\|=(% style="width: 100px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 110px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
27.1	140	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	141
60.8	142
	143
16.1	144	=== 1.7.2 Change address ===
	145
45.2	146
16.1	147	For example: Change the address of the sensor with address 1 to 2, master → slave
	148
45.20	149	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	150	\|=(% style="width: 74.75px; background-color: rgb(79, 129, 189); color: white;" %)Original address\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
45.32	151	\|(% style="width:67px" %)0X01\|(% style="width:76px" %)0X06\|(% style="width:60px" %)0X00\|(% style="width:50px" %)0X50\|(% style="width:50px" %)0X00\|(% style="width:50px" %)0X02\|(% style="width:57px" %)0X08\|(% style="width:56px" %)0X1A
16.1	152
	153	If the sensor receives correctly, the data is returned along the original path.
	154
45.32	155	(% style="color:red" %)Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.
16.1	156
45.32	157
16.1	158	=== 1.7.3 Modify intercept ===
	159
	160
45.48	161	send:
16.1	162
45.36	163	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	164	\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
	165	\|(% style="width:64px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X23\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X01\|(% style="width:1px" %)0XF8\|(% style="width:1px" %)(((
27.1	166	0X07
16.1	167	)))
	168
	169	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	170
45.48	171	response:
16.1	172
45.36	173	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	174	\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
16.1	175	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	176	0X02
27.1	177	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	178	0X8F
16.1	179	)))
	180
	181	=== 1.7.4 Query data ===
	182
37.1	183
	184	Query the data (EC,temperature) of the sensor (address 11), host → slave
	185
45.20	186	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	187	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
37.1	188	\|(% style="width:99px" %)0X11\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X00\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X02\|(% style="width:56px" %)0XC6\|(% style="width:56px" %)0X9B
	189
	190	If the sensor receives correctly, the following data will be returned, slave → host
	191
45.20	192	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	193	\|=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
37.1	194	\|(% style="width:99px" %)0X11\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X04\|(% style="width:70px" %)0X02\|(% style="width:72px" %)0XAE\|(% style="width:56px" %)0X01\|(% style="width:56px" %)0X64\|(% style="width:56px" %)0X8B\|(% style="width:56px" %)0XD0
	195
16.3	196	The address of the EC K10 sensor is 11
16.1	197
10.1	198	The query data command is 11 03 00 00 00 02 C6 9B
	199
45.48	200	For example, the returned data is 11 03 04 (% style="color:red" %)02 AE(%%) 01 64 8B D0. 02 AE is converted to decimal 686, K=10, EC: 6860uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
10.1	201
	202
37.1	203	Query the data (EC,temperature) of the sensor (address 11), host → slave
	204
45.20	205	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	206	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
37.1	207	\|(% style="width:99px" %)0X12\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X00\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X02\|(% style="width:56px" %)0XC6\|(% style="width:56px" %)0XA8
	208
	209	If the sensor receives correctly, the following data will be returned, slave → host
	210
45.20	211	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	212	\|=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
37.1	213	\|(% style="width:99px" %)0X12\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X04\|(% style="width:70px" %)0X02\|(% style="width:72px" %)0XAE\|(% style="width:56px" %)0X01\|(% style="width:56px" %)0X64\|(% style="width:56px" %)0XB8\|(% style="width:56px" %)0XD0
	214
10.1	215	The address of the EC K1 sensor is 12
	216
	217	The query data command is 12 03 00 00 00 02 C6 A8
	218
45.48	219	For example, the returned data is 12 03 04 (% style="color:red" %)02 AE(%%) 01 64 B8 D0. 02 AE is converted to decimal 686, K=1, EC: 686uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
10.1	220
11.1	221
72.2	222	EC200
60.10	223
72.3	224	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	225	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Register Address\|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register length\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	226	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X04\|(% style="width:72px" %)(((
	227	0XC5
	228	)))\|(% style="width:77px" %)0XC8
72.2	229
72.3	230	response:
72.2	231
72.3	232	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
72.5	233	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Number of valid bytes\|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register contents\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	234	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X08\|(% style="width:94px" %)(((
72.13	235	0X00 0X00 0X1E 0XEF 0X01 0X14 0X00 0X2B
72.5	236	)))\|(% style="width:72px" %)(((
72.14	237	0X42
72.15	238	)))\|(% style="width:77px" %)0X59
72.3	239
72.15	240	Conductivity calculation: 0X1EEF=7919=>Conductivity=7919μS/cm
	241	Temperature calculation: 0X0114=276=>Temperature=27.6℃
	242	Salinity calculation: 0X002b=43=>Salinity=4.3PSU
72.3	243
	244
	245
	246
72.15	247
16.2	248	=== 1.7.5 Calibration Method ===
12.1	249
61.2	250	ECK1 and ECK10.0
12.1	251
15.1	252	This device uses one-point calibration, and you need to prepare a known E standard solution. When mileage K=1, 1~~2000 uses 1413μS/cm standard solution, and when mileage K=10, 10~~20000 uses 12.88mS/cm standard solution.
12.1	253
45.63	254	(% style="color:blue" %)The calibration steps are as follows:
	255
15.1	256	(1) Place the electrode in distilled water and clean it. When mileage 1~~2000 uses 1413μS/cm standard solution, enter the following calibration command after the data is stable.
	257
45.20	258	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	259	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
14.1	260	\|(% style="width:99px" %)0X12\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X26\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0X04\|(% style="width:1px" %)(((
	261	0X00
	262	0X00
	263	0X37
	264	0X32
	265	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	266
15.1	267	1413*10 gives 0X00003732
14.1	268
45.48	269	response:
15.1	270
45.20	271	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	272	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
14.1	273	\|(% style="width:99px" %)0X12\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X26\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0XA2\|(% style="width:1px" %)0XA0
	274
	275	(2) Place the electrode in distilled water to clean it. Use 12.88mS/cm standard solution for the range of 10~~20000. After the data is stable, enter the following calibration command
	276
45.20	277	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	278	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
14.1	279	\|(% style="width:99px" %)0X11\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X26\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0X04\|(% style="width:1px" %)(((
	280	0X00
	281	0X01
	282	0XF7
	283	0X20
	284	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	285
15.1	286	12880*10 gives 0X01F720
	287
45.48	288	response:
14.1	289
45.20	290	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	291	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
14.1	292	\|(% style="width:99px" %)0X11\|(% style="width:112px" %)0X06\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X26\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0XEB\|(% style="width:1px" %)0X50
	293
61.2	294
	295
72.3	296	EC200
61.2	297
62.7	298	For the device with address 01, use 1413uS/cm standard solution to calibrate the first point. Send frame: 1413. Convert hexadecimal to 585. Write 0001, 00 00, 0585 to 0x0120, 0x0121, 0x0122 respectively.
61.2	299
61.3	300	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
63.1	301	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Register contents\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
	302	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X01 0X20\|(% style="width:126px" %)0X00 0X03\|(% style="width:85px" %)0X06\|(% style="width:1px" %)(((
61.8	303	0X00
61.7	304	0X01
61.3	305	0X00
	306	0X00
61.9	307	0X05
	308	0X85
63.1	309	)))\|(% style="width:1px" %)0X1c\|(% style="width:1px" %)(((
62.1	310	(((
63.1	311	0X25
62.1	312	)))
63.1	313	)))
62.1	314
63.1	315	response:
	316
	317	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	318	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	319	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X01 0X02\|(% style="width:126px" %)0X00 0X03\|(% style="width:85px" %)0X06\|(% style="width:1px" %)(((
	320	0X80
	321	)))\|(% style="width:60px" %)0X3e(((
62.3	322
62.2	323	)))
61.3	324
63.1	325	Use 111310uS/cm standard solution to calibrate the second point and send the frame: 111310 is converted into hexadecimal 1b2ce, and 0002, 0001,b2 ce are written to 0x0120, 0x0121, and 0x0122 respectively.
62.3	326
63.1	327	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	328	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Register contents\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
	329	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X01 0X20\|(% style="width:126px" %)0X00 0X03\|(% style="width:85px" %)0X06\|(% style="width:1px" %)(((
	330	0X00
	331	0X02
	332	0X00
	333	0X01
	334	0Xb2
	335	0Xce
	336	)))\|(% style="width:1px" %)0X3e\|(% style="width:1px" %)(((
	337	(((
	338	0X22
	339	)))
	340	)))
62.3	341
63.1	342	response:
	343
	344	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	345	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	346	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X01 0X02\|(% style="width:126px" %)0X00 0X03\|(% style="width:85px" %)0X06\|(% style="width:1px" %)(((
	347	0X80
	348	)))\|(% style="width:60px" %)0X3e
	349
8.1	350	= 2. DR-PH01 Water PH Sensor =
	351
28.2	352	== 2.1 Specification ==
9.1	353
45.20	354
26.1	355	* Power Input: DC7~~30
45.62	356
26.1	357	* Power Consumption : < 0.5W
45.62	358
26.1	359	* Interface: RS485. 9600 Baud Rate
45.62	360
26.1	361	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	362
	363	* pH measurement error: ±0.15pH
	364
	365	* Repeatability error: ±0.02pH
	366
	367	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	368
	369	* Temperature measurement error: ±0.5°C
	370
59.1	371	* Working environment:
	372	** Ambient Temperature: 0–60°C
	373	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	374
26.1	375	* Temperature Accuracy: ±0.5 °C
45.62	376
26.1	377	* IP Rated: IP68
45.62	378
26.1	379	* Max Pressure: 0.6MPa
	380
	381	== 2.2 Wiring ==
	382
45.49	383
62.3	384	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	385
45.1	386
45.62	387	== 2.3 Mechinical Drawing ==
26.1	388
45.49	389
62.3	390	[[image:image-20240714174241-2.png]]
26.1	391
	392
	393	== 2.4 Installation Notice ==
	394
45.49	395
26.1	396	Do not power on while connect the cables. Double check the wiring before power on.
	397
	398	Installation Photo as reference:
	399
45.50	400	(% style="color:blue" %)Submerged installation:
26.1	401
	402	The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
	403
62.3	404	[[image:image-20240718191348-6.png]]
26.1	405
45.50	406	(% style="color:blue" %)Pipeline installation:
26.1	407
	408	Connect the equipment to the pipeline through the 3/4 thread.
	409
62.3	410	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
26.1	411
45.50	412	(% style="color:blue" %)Sampling:
26.1	413
	414	Take representative water samples according to sampling requirements. If it is inconvenient to take samples, you can also put the electrode into the solution to be tested and read the output data. After a period of time, take out the electrode and clean it.
	415
45.50	416	(% style="color:blue" %)Measure the pH of the water sample:
26.1	417
	418	First rinse the electrode with distilled water, then rinse it with the water sample, then immerse the electrode in the sample, carefully shake the test cup or stir it to accelerate the electrode balance, let it stand, and record the pH value when the reading is stable.
	419
	420
39.1	421	== 2.5 Maintenance ==
26.1	422
	423
	424	* The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself. Contact us as soon as possible!
45.62	425
26.1	426	* There is an appropriate amount of soaking solution in the protective bottle at the front end of the electrode. The electrode head is soaked in it to keep the glass bulb and the liquid junction activated. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
45.62	427
26.1	428	* Preparation of electrode soaking solution: Take a packet of PH4.00 buffer, dissolve it in 250 ml of pure water, and soak it in 3M potassium chloride solution. The preparation is as follows: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water.
45.62	429
26.1	430	* The glass bulb at the front end of the electrode cannot come into contact with hard objects. Any damage and scratches will make the electrode ineffective.
45.62	431
26.1	432	* Before measurement, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
45.62	433
26.1	434	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	435
26.1	436	* After long-term use, the pH electrode will become passivated, which is characterized by a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the bulb at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours. If the pH electrode is seriously passivated and soaking in 0.1M hydrochloric acid has no effect, the pH electrode bulb can be soaked in 4% HF (hydrofluoric acid) for 3-5 seconds, washed with pure water, and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
45.62	437
26.1	438	* Glass bulb contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant.
	439
45.62	440	* The equipment should be calibrated before each use. For long-term use, it is recommended to calibrate once every 3 months. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
	441
26.1	442	== 2.6 RS485 Commands ==
	443
45.51	444
27.1	445	RS485 signaldefault address 0x10
	446	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	447
45.51	448
33.2	449	=== 2.6.1 Query address ===
27.1	450
45.51	451
45.52	452	send:
27.1	453
45.52	454	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	455	\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
27.1	456	\|(% style="width:99px" %)0XFE \|(% style="width:112px" %)0X03\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X50\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X00\|(% style="width:1px" %)0X51\|(% style="width:1px" %)0XD4
	457
45.52	458	response:
27.1	459
45.52	460	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	461	\|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
27.1	462	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	463
	464	=== 2.6.2 Change address ===
	465
45.52	466
27.1	467	For example: Change the address of the sensor with address 1 to 2, master → slave
	468
45.52	469	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	470	\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
27.1	471	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X50\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0X08\|(% style="width:1px" %)0X1A
	472
	473	If the sensor receives correctly, the data is returned along the original path.
	474
45.52	475	(% style="color:red" %)Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.
27.1	476
45.52	477
27.1	478	=== 2.6.3 Modify intercept ===
	479
	480
45.52	481	send:
27.1	482
45.52	483	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	484	\|=(% style="width: 44.75px; background-color: rgb(79, 129, 189); color: white;" %)Address\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high\|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.3	485	\|(% style="width:71px" %)0X10\|(% style="width:74px" %)0X06\|(% style="width:67px" %)0X00\|(% style="width:68px" %)0X10\|(% style="width:69px" %)0X00\|(% style="width:66px" %)0X64\|(% style="width:57px" %)0X8A\|(% style="width:57px" %)(((
27.1	486	0XA5
	487	)))
	488
34.4	489	Change the intercept of the sensor at address 10 to 1 (default is 0). You need to pass the intercept 1*100 =100 into the command 0x006.
27.1	490
45.52	491	response:
27.1	492
45.52	493	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	494	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
27.1	495	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	496	0X00
	497	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	498	0XA5
	499	)))
	500
	501	=== 2.6.4 Query data ===
	502
	503
34.3	504	Query the data (PH) of the sensor (address 10), host → slave
9.1	505
45.52	506	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.2	507	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	508	\|(% style="width:99px" %)0X10\|(% style="width:74px" %)0X03\|(% style="width:75px" %)0X00\|(% style="width:68px" %)0X00\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X01\|(% style="width:56px" %)0X87\|(% style="width:56px" %)0X4B
34.3	509
	510	If the sensor receives correctly, the following data will be returned, slave → host
	511
45.75	512	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	513	\|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
35.1	514	\|(% style="width:99px" %)0X10\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X02\|(% style="width:70px" %)0X02\|(% style="width:72px" %)0XAE\|(% style="width:56px" %)0XC4\|(% style="width:56px" %)0X9B
34.3	515
11.1	516	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	517
11.1	518	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	519
	520	02 AE is the pH value, which is converted into decimal to get 686, and then two decimal places are added to get the actual value. 02 AE means the current pH value is 6.86.
	521
	522
27.1	523	=== 2.6.5 Calibration Method ===
	524
	525
	526	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	527
	528	(% style="color:blue" %)The calibration steps are as follows:
	529
27.1	530	(1) Place the electrode in distilled water to clean it, and then place it in 9.18 standard buffer solution. After the data stabilizes, enter the following calibration command, and the 9.18 calibration is completed.
	531
45.52	532	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	533	\|=(% style="width: 61px; background-color: rgb(79, 129, 189); color: white;" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
27.1	534	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	535	0X00
	536	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	537	0XF1
	538	)))
	539
	540	(2) Wash the electrode in distilled water and place it in 6.86 standard buffer. After the data stabilizes, enter the following calibration command. The 6.86 calibration is completed.
	541
45.52	542	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	543	\|=(% style="width: 61px; background-color: rgb(79, 129, 189); color: white;" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
27.1	544	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	545	0X00
	546	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	547	0X31
	548	)))
	549
	550	(3) Wash the electrode in distilled water and place it in 4.01 standard buffer. After the data stabilizes, enter the following calibration command, and the 4.00 calibration is completed.
	551
45.52	552	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	553	\|=(% style="width: 61px; background-color: rgb(79, 129, 189); color: white;" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
27.1	554	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	555	0X00
	556	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	557	0X31
	558	)))
	559
	560	After the above three steps are completed, the calibration is successful. The advantage of three-point calibration compared to two-point calibration is that the electrode is calibrated separately in the acid and alkali parts, thereby achieving accurate calibration of the full range and making the measurement data more accurate.
	561
	562
8.1	563	= 3. DR-ORP1 Water ORP Sensor =
	564
28.2	565	== 3.1 Specification ==
27.2	566
45.75	567
27.2	568	* Power Input: DC7~~30
45.69	569
32.1	570	* Measuring range: -1999~~1999mV
45.69	571
45.70	572	* Resolution: 1mV
45.69	573
27.2	574	* Interface: RS485. 9600 Baud Rate
45.69	575
27.2	576	* Measurement error: ±3mV
45.69	577
27.2	578	* Stability: ≤2mv/24 hours
45.69	579
59.1	580	* Working environment:
	581	** Ambient Temperature: 0–60°C
	582	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	583
27.2	584	* IP Rated: IP68
45.69	585
27.2	586	* Max Pressure: 0.6MPa
	587
	588	== 3.2 Wiring ==
	589
45.75	590
62.3	591	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	592
45.1	593
27.2	594	== 3.3 Mechinical Drawing ==
	595
45.75	596
62.3	597	[[image:image-20240714174241-2.png]]
27.2	598
45.77	599
27.2	600	== 3.4 Installation Notice ==
	601
45.75	602
27.2	603	Do not power on while connect the cables. Double check the wiring before power on.
	604
45.75	605	Installation Photo as reference:
27.2	606
45.70	607	(% style="color:blue" %) Submerged installation:
27.2	608
	609	The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
	610
62.3	611	[[image:image-20240718191348-6.png]]
27.2	612
45.70	613	(% style="color:blue" %) Pipeline installation:
27.2	614
	615	Connect the equipment to the pipeline through the 3/4 thread.
	616
62.3	617	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
27.2	618
	619
39.1	620	== 3.5 Maintenance ==
8.1	621
9.1	622
29.1	623	(1) The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
32.3	624
29.1	625	(2) In general, ORP electrodes do not need to be calibrated and can be used directly. When there is doubt about the quality and test results of the ORP electrode, the electrode potential can be checked with an ORP standard solution to determine whether the ORP electrode meets the measurement requirements, and the electrode can be recalibrated or replaced with a new ORP electrode. The frequency of calibration or inspection of the measuring electrode depends on different application conditions (the degree of dirt in the application, the deposition of chemical substances, etc.).
32.3	626
29.1	627	(3) There is an appropriate soaking solution in the protective bottle at the front end of the electrode, and the electrode head is soaked in it to ensure the activation of the platinum sheet and the liquid junction. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
32.3	628
29.1	629	(4) Preparation of electrode soaking solution: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water to prepare a 3.3M potassium chloride solution.
32.3	630
29.1	631	(5) Before measuring, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
32.3	632
29.1	633	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	634
29.1	635	(7) After long-term use, the ORP electrode will be passivated, which is manifested as a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the platinum sheet at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
32.3	636
29.1	637	(8) Electrode contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant. If the platinum of the electrode is severely contaminated and an oxide film is formed, toothpaste can be applied to the platinum surface and then gently scrubbed to restore the platinum's luster.
32.3	638
29.1	639	(9) The equipment should be calibrated before each use. It is recommended to calibrate once every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
	640
45.75	641
29.1	642	== 3.6 RS485 Commands ==
	643
	644
	645	RS485 signaldefault address 0x13
	646	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	647
45.75	648
33.2	649	=== 3.6.1 Query address ===
29.1	650
	651
45.75	652	send:
	653
45.69	654	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	655	\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
29.1	656	\|(% style="width:99px" %)0XFE \|(% style="width:112px" %)0X03\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X50\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X00\|(% style="width:1px" %)0X51\|(% style="width:1px" %)0XD4
	657
45.75	658	response:
29.1	659
45.69	660	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	661	\|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
29.1	662	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	663
	664	=== 3.6.2 Change address ===
	665
45.75	666
29.1	667	For example: Change the address of the sensor with address 1 to 2, master → slave
	668
45.71	669	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	670	\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
29.1	671	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X50\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0X08\|(% style="width:1px" %)0X1A
	672
	673	If the sensor receives correctly, the data is returned along the original path.
	674
45.75	675	(% style="color:red" %)Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.
29.1	676
45.75	677
29.1	678	=== 3.6.3 Modify intercept ===
	679
	680
45.75	681	send:
	682
45.69	683	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	684	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
29.1	685	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	686	0X96
	687	)))
	688
	689	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	690
45.75	691	response:
29.1	692
45.69	693	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	694	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width:68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
29.1	695	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	696	0X00
	697	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	698	0X96
	699	)))
	700
	701	=== 3.6.4 Query data ===
	702
9.1	703
37.1	704	Query the data (ORP) of the sensor (address 13), host → slave
35.1	705
45.69	706	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	707	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
35.1	708	\|(% style="width:99px" %)0X13\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X00\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X01\|(% style="width:56px" %)0X87\|(% style="width:56px" %)0X78
	709
	710	If the sensor receives correctly, the following data will be returned, slave → host
	711
45.69	712	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	713	\|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
35.1	714	\|(% style="width:99px" %)0X13\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X02\|(% style="width:70px" %)0X02\|(% style="width:72px" %)0XAE\|(% style="width:56px" %)0X80\|(% style="width:56px" %)0X9B
	715
11.1	716	The query data command is 13 03 00 00 00 01 87 78
10.1	717
11.1	718	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	719
11.1	720	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	721
	722
29.1	723	=== 3.6.5 Calibration Method ===
	724
45.75	725
29.1	726	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	727	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	728	enter the following calibration command, and the 86mV point calibration is completed;
	729
45.69	730	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	731	\|=(% style="width: 42px; background-color: rgb(79, 129, 189); color: white;" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
29.1	732	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	733	0X00
	734	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	735	0X03
	736	)))
	737
	738	Wash the electrode in distilled water and place it in 256mV standard buffer. After the data is stable, enter the following calibration command to complete the 256mV point calibration.
	739
45.69	740	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	741	\|=(% style="width: 42px; background-color: rgb(79, 129, 189); color: white;" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	742	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	743	0X00
	744	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	745	0XC3
	746	)))
	747
8.1	748	= 4. DR-DO1 Dissolved Oxygen Sensor =
	749
32.1	750	== 4.1 Specification ==
	751
33.2	752
58.1	753	* Measuring range: 0-20mg/L, 0–50℃
45.77	754
58.1	755	* Accuracy: 3%, ±0.5℃
45.77	756
58.1	757	* Resolution: 0.01 mg/L, 0.01℃
45.77	758
33.2	759	* Maximum operating pressure: 6 bar
45.77	760
33.2	761	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	762
33.2	763	* Power supply voltage: 5-24V DC
45.77	764
59.1	765	* Working environment:
	766	** Ambient Temperature: 0–60°C
	767	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	768
32.1	769	* Power consumption: ≤0.5W
	770
33.2	771	== 4.2 wiring ==
32.1	772
45.77	773
62.3	774	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	775
	776
45.77	777	== 4.3 Impedance requirements for current signals ==
33.2	778
45.77	779
46.2	780	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	781	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	782	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	783
32.1	784	== 4.4 Mechinical Drawing ==
	785
	786
62.3	787	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	788
33.2	789
39.1	790	== 4.5 Instructions for use and maintenance ==
32.1	791
45.77	792
32.1	793	* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
45.77	794
32.1	795	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	796
	797	== 4.6 RS485 Commands ==
	798
45.77	799
34.1	800	RS485 signaldefault address 0x14
	801	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	802
45.77	803
32.3	804	=== 4.6.1 Query address ===
32.1	805
32.3	806
45.77	807	send:
	808
	809	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	810	\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register address high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register address low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.1	811	\|(% style="width:99px" %)0XFF\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X0A\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X02\|(% style="width:56px" %)0XF1\|(% style="width:56px" %)0XD7
32.3	812
34.1	813	If you forget the original address of the sensor, you can use the broadcast address 0XFF instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
32.3	814
	815
45.77	816	response:
32.3	817
34.1	818	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	819	Register 1 data high and register 1 data low indicate the sensor version
32.3	820
45.77	821	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	822	\|=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.1	823	\|(% style="width:99px" %)0XFF\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X04\|(% style="width:68px" %)0X00\|(% style="width:70px" %)0X01\|(% style="width:72px" %)0X00\|(% style="width:56px" %)0X00\|(% style="width:56px" %)0XB4\|(% style="width:56px" %)0X3C
	824
33.2	825	=== 4.6.2 Change address ===
32.3	826
45.77	827
34.1	828	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	829
45.77	830	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	831	\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Original address\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Start address high\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Start address low\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version\|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version\|=(% style="width: 39px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high\|=(% style="width: 39px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low
33.2	832	\|(% style="width:67px" %)0X01\|(% style="width:71px" %)0X10\|(% style="width:65px" %)0X00\|(% style="width:65px" %)0X0A\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X02\|(% style="width:53px" %)0X04\|(% style="width:53px" %)0X00\|(% style="width:72px" %)0X02\|(% style="width:53px" %)0X00\|(% style="width:53px" %)0X00\|(% style="width:56px" %)0XD2\|(% style="width:53px" %)0X10
	833
45.77	834	response:
32.3	835
45.77	836	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	837	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.1	838	\|(% style="width:99px" %)0X01\|(% style="width:72px" %)0X10\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X0A\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X02\|(% style="width:56px" %)0X61\|(% style="width:56px" %)0XCA
32.3	839
34.1	840	=== 4.6.3 Query data ===
9.1	841
	842
34.2	843	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	844
45.77	845	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	846	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.1	847	\|(% style="width:99px" %)0X14\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X14\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X01\|(% style="width:56px" %)0XC6\|(% style="width:56px" %)0XCB
	848
34.2	849	If the sensor receives correctly, the following data will be returned, slave → host
34.1	850
45.77	851	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	852	\|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.2	853	\|(% style="width:99px" %)0X14\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X02\|(% style="width:70px" %)0X03\|(% style="width:72px" %)0X78\|(% style="width:56px" %)0XB5\|(% style="width:56px" %)0X55
34.1	854
11.1	855	After the query, 7 bytes will be returned. For example, the returned data is 14 03 02 (% style="color:red" %)03 78(%%) B5 55. 03 78 is the value of dissolved oxygen.
10.1	856
	857	Converted to decimal, it is 888. Add two decimal places to get the actual value. 03 78 means the current dissolved oxygen is 8.88mg/L
	858
11.1	859
34.2	860	Query the data (temperature) of the sensor (address 14), host → slave
	861
45.77	862	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	863	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.2	864	\|(% style="width:99px" %)0X14\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X11\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X01\|(% style="width:56px" %)0XD6\|(% style="width:56px" %)0XCA
	865
	866	If the sensor receives correctly, the following data will be returned, slave → host
	867
45.77	868	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	869	\|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.2	870	\|(% style="width:99px" %)0X14\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X02\|(% style="width:70px" %)0X09\|(% style="width:72px" %)0XA4\|(% style="width:56px" %)0XB2\|(% style="width:56px" %)0X6C
	871
	872	After the query, 7 bytes will be returned. For example, the returned data is 14 03 02 (% style="color:red" %)09 A4(%%) B2 6C. 03 78 is the value of dissolved oxygen temperature.
	873
45.77	874	Converted to decimal, it is 2468. Add two decimal places to get the actual value. 09 A4 means the current dissolved oxygen temperature is 24.68°C
34.2	875
	876
8.1	877	= 5. DR-TS1 Water Turbidity Sensor =
	878
45.77	879	== 5.1 Specification ==
9.1	880
10.1	881
49.1	882	* Measuring range: 0.1~~1000.0NTU
32.3	883
	884	* Accuracy: ±5%
45.77	885
32.3	886	* Resolution: 0.1NTU
45.77	887
32.3	888	* Stability: ≤3mV/24 hours
	889
54.1	890	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	891
55.1	892	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	893
59.1	894	* Working environment:
	895	** Ambient Temperature: 0–60°C
	896	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	897
	898	* Power consumption: ≤ 0.5W
	899
32.3	900	== 5.2 wiring ==
	901
45.77	902
62.3	903	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	904
45.1	905
32.3	906	== 5.3 Impedance requirements for current signals ==
	907
45.88	908
46.3	909	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	910	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	911	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	912
	913	== 5.4 Mechinical Drawing ==
	914
45.77	915
62.3	916	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
32.3	917
	918
39.1	919	== 5.5 Instructions for use and maintenance ==
32.3	920
45.77	921
32.3	922	* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
45.77	923
32.3	924	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	925
	926	== 5.6 RS485 Commands ==
	927
	928
36.1	929	RS485 signaldefault address 0x15
	930	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	931
45.77	932
36.1	933	=== 5.6.1 Query address ===
	934
32.3	935
45.77	936	send:
	937
	938	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	939	\|=(% style="width: 80.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address low\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 54.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 58.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
45.84	940	\|(% style="width:99px" %)0XFE \|(% style="width:64.75px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:64.75px" %)0X50\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X00\|(% style="width:56px" %)0X51\|(% style="width:56px" %)0XD4
32.3	941
	942	If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
	943
	944
45.77	945	response:
32.3	946
45.77	947	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	948	\|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
32.3	949	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	950
36.1	951	=== 5.6.2 Change address ===
32.3	952
45.87	953
36.1	954	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	955
45.77	956	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	957	\|=(% style="width: 80.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 54.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 58.75px;background-color:#4F81BD;color:white" %)CRC16 high
36.1	958	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X50\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0X08\|(% style="width:1px" %)0X1A
	959
	960	If the sensor receives correctly, the data is returned along the original path.
	961
45.77	962	(% style="color:red" %)Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.
	963
45.84	964
36.1	965	=== 5.6.3 Query data ===
	966
	967
	968	Query the data (turbidity) of the sensor (address 15), host → slave
	969
45.77	970	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	971	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
36.1	972	\|(% style="width:99px" %)0X15\|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X00\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X01\|(% style="width:56px" %)0X87\|(% style="width:56px" %)0X1E
	973
	974	If the sensor receives correctly, the following data will be returned, slave → host
	975
45.77	976	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	977	\|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
36.1	978	\|(% style="width:99px" %)0X15\|(% style="width:72px" %)0X03\|(% style="width:68px" %)0X02\|(% style="width:70px" %)0X02\|(% style="width:72px" %)0X9A\|(% style="width:56px" %)0X09\|(% style="width:56px" %)0X4C
	979
11.1	980	The query data command is 15 03 00 00 00 01 87 1E
10.1	981
11.1	982	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	983
	984	02 9A is the turbidity value, converted to decimal, it is 666, and then divided by 10, the actual value is 66.6, 02 9A means the current turbidity value is 66.6 NTU
49.2	985
	986
68.1	987	= 6. DR-CL Water CL Probe =
49.2	988
63.2	989	== 6.1 Specification: ==
49.2	990
63.2	991	* Power Input: DC7~~30
	992
	993	* Power Consumption : 0.19W
	994
	995	* Interface: RS485. 9600 Baud Rate
	996
	997	* CL Range & Resolution:
	998	CL2ML:**0-2mg/L
	999	CL10ML:**0-10mg/L
63.3	1000	Resolution:**0.01mg/L
63.2	1001
63.3	1002	* CL Accuracy: ±5% FS
63.2	1003	* Temperature Accuracy: ±0.5 °C
	1004	* Working environment:
63.3	1005	** Ambient Temperature: 0–50°C
	1006	** pH:4-9
	1007	** Flow rate: 30L/h~~60L/h (flow tank installation)
63.2	1008	* IP Rated: IP68
	1009
	1010	* Max Pressure: 0.6MPa
	1011
68.1	1012	== 6.2 Wiring ==
63.2	1013
66.1	1014	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
63.2	1015
68.1	1016	== 6.3 Mechinical Drawing ==
66.1	1017
	1018	[[image:1752573238705-910.png\|\|height="694" width="278"]]
	1019
67.2	1020	== 6.4 Installation ==
66.1	1021
67.2	1022	Flow-through installation: Use the matching flow slot for installation. The device and the flow slot are installed tightly.
66.1	1023
67.2	1024	The measuring end is completely immersed in the measured liquid to ensure a steady flow rate without bubbles.
66.1	1025
67.2	1026	It is recommended that the flow rate be controlled at 30-60Lh to ensure the accuracy of the test.
	1027
	1028	[[image:1752573643879-991.png\|\|height="360" width="343"]]
	1029
69.1	1030	== 6.5 Maintenance ==
67.2	1031
69.1	1032	* The device itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible!
	1033	* After using the electrode, please clean the electrode head with clean water and cover it with a protective cover.
	1034	* When measuring the device, the measured liquid should flow and the flow rate should be uniform, and there should be no bubbles attached to the measuring end of the device.
	1035	* If the electrode diaphragm is attached with dirt and mineral components, the sensitivity will be reduced, and it may not be possible to perform sufficient measurement. Please ensure that the platinum ring is clean.
	1036	* The platinum induction ring of a good residual chlorine electrode should always be kept clean and bright. If the platinum ring of the electrode becomes rough or covered with pollutants after measurement, please clean it according to the following method: (For reference) Inorganic pollution: immerse the electrode in 0.1mol/L dilute hydrochloric acid for 15 minutes, gently wipe the platinum ring of the residual chlorine electrode with a cotton swab, and then wash it with tap water.
	1037	* Organic or oil pollution: immerse the electrode in tap water with a small amount of detergent, such as dishwashing liquid, and thoroughly clean the sensing surface of the electrode sensor. Gently wipe the platinum ring of the electrode with a cotton swab, then rinse with tap water, and the cleaning is complete. If the platinum ring of the electrode has formed an oxide film, please use toothpaste or 1000-grit fine sandpaper to properly polish the sensing surface, and then clean it with tap water. The platinum ring is connected to the glass, so please handle it carefully when polishing.
	1038	The electrode has a service life of about one year, and a new electrode should be replaced in time after aging.
	1039	* Before the cable plug and the device plug are locked, do not put the plug part into water.
67.2	1040
	1041
69.1	1042
	1043	== 6.6 RS485 Commands ==
	1044
	1045	RS485 signal
	1046	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	1047
	1048
69.2	1049	== 6.7 Query data ==
69.1	1050
69.2	1051	Example 1: Read the current residual chlorine concentration of the device with address 01
69.1	1052
69.2	1053	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.5	1054	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Register Address\|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register length\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	1055	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X01\|(% style="width:72px" %)(((
69.3	1056	0X84
69.10	1057	)))\|(% style="width:77px" %)0X0A
69.1	1058
69.5	1059	response:
69.1	1060
69.5	1061	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.6	1062	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 83px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 110px; background-color: rgb(79, 129, 189); color: white;" %)Valid Bytes\|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register contents\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	1063	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X03\|(% style="width:110px" %)0X02\|(% style="width:94px" %)0X03 0X16\|(% style="width:72px" %)(((
69.7	1064	0X39
69.10	1065	)))\|(% style="width:77px" %)0X7A
69.1	1066
69.8	1067	Calculation of residual chlorine concentration: 316H (hexadecimal) = 790 => residual chlorine = 7.90
69.1	1068
	1069
69.9	1070	Example 2: Set the deviation value for the current residual chlorine value of the device with address 01 to correct the value and send the frame: (If the current residual gas value output by the device is 7.90, the value needs to be corrected to 8.00, the difference is 8.00-7.90-0.100.1*100=10=>41200000 (floating point number), write 41200000 to the contents of the two registers)
69.1	1071
69.10	1072	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.12	1073	\|=(% style="width: 80.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Register address\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Register number\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Byte number\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register content\|=(% style="width: 54.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 58.75px;background-color:#4F81BD;color:white" %)CRC16 high
69.14	1074	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X01 0X12\|(% style="width:126px" %)0X00 0X02\|(% style="width:85px" %)0X04\|(% style="width:1px" %)0X4120 0X0000\|(% style="width:1px" %)0X08\|(% style="width:1px" %)0X1A
69.1	1075
69.15	1076	response:
69.1	1077
69.15	1078	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.17	1079	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 83px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 110px; background-color: rgb(79, 129, 189); color: white;" %)Register address\|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register number\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
69.18	1080	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X10\|(% style="width:110px" %)0X01 0X12\|(% style="width:94px" %)0X00 0X02\|(% style="width:72px" %)(((
	1081	0XE5
	1082	)))\|(% style="width:77px" %)0X0D
69.1	1083
	1084
	1085
66.1	1086	= 7. Water Quality Sensor Datasheet =
	1087
51.1	1088	* [[Water Quality Sensor Transmitter Datasheet>>https://www.dropbox.com/scl/fi/9tofocmgapkbddshznumn/Datasheet_WQS-xB-WQS-xS_Water-Quality-Sensor-Transmitter.pdf?rlkey=wxua12ur9swk30rkqnh2boo9z&st=axga6epf&dl=0]]

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