Wiki source code of Water Quality Sensors

Version 72.8 by Karry Zhuang on 2025/07/16 09:28

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
71.5	23	* EC Accuracy: ±1% FS
71.4	24	* Salinity measurement range
71.9	25	EC200 :**0~~70PSU Resolution: 0.1PSU
71.5	26	* Temperature measurement range
71.9	27	ECK1/ECK10:**-20~~+60℃; Resolution: 0.1℃
	28	EC200 :**-5~~+80℃; Resolution: 0.1℃
7.1	29	* Temperature Accuracy: ±0.5 °C
71.8	30	* Temperature compensation range
71.9	31	ECK1/ECK10:**0~~+60℃ (default compensation temperature 25℃)
	32	EC200:**-5~~+80℃ (default compensation temperature 25℃)
	33	* Temperature compensation coefficient:Default 0.2
59.1	34	* Working environment:
	35	** Ambient Temperature: 0–60°C
	36	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
72.2	37	** ECK200 Continuous monitoring of cross-section water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food, tap water, seawater and other high conductivity environments
7.1	38	* IP Rated: IP68
	39	* Max Pressure: 0.6MPa
	40
	41	== 1.2 Application for Different Range ==
	42
45.2	43
62.3	44	[[image:image-20240714173018-1.png]]
7.1	45
	46
	47	== 1.3 Wiring ==
	48
45.2	49
62.3	50	[[image:image-20241129142314-1.png\|\|height="352" width="1108"]]
7.1	51
45.1	52
7.1	53	== 1.4 Mechinical Drawing ==
	54
72.2	55	ECK1 and ECK10 EC200
45.2	56
7.1	57
62.3	58	[[image:image-20240714174241-2.png]] [[image:1752564223905-283.png\|\|height="399" width="160"]]
7.1	59
60.4	60
7.1	61	== 1.5 Installation ==
	62
	63
45.2	64	Electrode installation form:
15.2	65
45.2	66	A: Side wall installation
15.2	67
45.2	68	B: Top flange installation
15.2	69
45.2	70	C: Pipeline bend installation
15.2	71
45.2	72	D: Pipeline bend installation
15.2	73
45.2	74	E: Flow-through installation
15.2	75
45.2	76	F: Submerged installation
15.2	77
62.3	78	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	79
18.1	80	Several common installation methods of electrodes
15.2	81
18.1	82	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	83
18.1	84	A. Several common incorrect installation methods
15.2	85
62.3	86	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	87
45.2	88	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	89
62.3	90	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	91
45.2	92	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	93
	94	B. Correct installation method
	95
62.3	96	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	97
	98
38.1	99	== 1.6 Maintenance ==
7.1	100
	101
26.1	102	* 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	103
26.1	104	* 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	105
26.1	106	* 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	107
26.1	108	* 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	109
8.1	110	== 1.7 RS485 Commands ==
	111
15.2	112
	113	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	114	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	115
	116
16.1	117	=== 1.7.1 Query address ===
8.1	118
11.1	119
45.48	120	send:
45.2	121
	122	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	123	\|=(% 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	124	\|(% 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	125
	126	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.
	127
	128
45.48	129	response:
16.1	130
45.14	131	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	132	\|=(% 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	133	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	134
60.8	135
	136
16.1	137	=== 1.7.2 Change address ===
	138
45.2	139
16.1	140	For example: Change the address of the sensor with address 1 to 2, master → slave
	141
45.20	142	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	143	\|=(% 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	144	\|(% 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	145
	146	If the sensor receives correctly, the data is returned along the original path.
	147
45.32	148	(% 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	149
45.32	150
16.1	151	=== 1.7.3 Modify intercept ===
	152
	153
45.48	154	send:
16.1	155
45.36	156	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	157	\|=(% 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
	158	\|(% 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	159	0X07
16.1	160	)))
	161
	162	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	163
45.48	164	response:
16.1	165
45.36	166	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	167	\|=(% 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	168	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	169	0X02
27.1	170	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	171	0X8F
16.1	172	)))
	173
	174	=== 1.7.4 Query data ===
	175
37.1	176
	177	Query the data (EC,temperature) of the sensor (address 11), host → slave
	178
45.20	179	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	180	\|=(% 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	181	\|(% 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
	182
	183	If the sensor receives correctly, the following data will be returned, slave → host
	184
45.20	185	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	186	\|=(% 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	187	\|(% 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
	188
16.3	189	The address of the EC K10 sensor is 11
16.1	190
10.1	191	The query data command is 11 03 00 00 00 02 C6 9B
	192
45.48	193	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	194
	195
37.1	196	Query the data (EC,temperature) of the sensor (address 11), host → slave
	197
45.20	198	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	199	\|=(% 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	200	\|(% 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
	201
	202	If the sensor receives correctly, the following data will be returned, slave → host
	203
45.20	204	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	205	\|=(% 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	206	\|(% 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
	207
10.1	208	The address of the EC K1 sensor is 12
	209
	210	The query data command is 12 03 00 00 00 02 C6 A8
	211
45.48	212	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	213
11.1	214
72.2	215	EC200
60.10	216
72.3	217	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	218	\|=(% 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
	219	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X04\|(% style="width:72px" %)(((
	220	0XC5
	221	)))\|(% style="width:77px" %)0XC8
72.2	222
72.3	223	response:
72.2	224
72.3	225	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
72.5	226	\|=(% 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
	227	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X08\|(% style="width:94px" %)(((
72.7	228	0X00 0X00 0X00 0X00 0X00 0X00 0X00 0X00
72.5	229	)))\|(% style="width:72px" %)(((
72.3	230	0XC5
	231	)))\|(% style="width:77px" %)0XC8
	232
	233
	234
	235
	236
16.2	237	=== 1.7.5 Calibration Method ===
12.1	238
61.2	239	ECK1 and ECK10.0
12.1	240
15.1	241	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	242
45.63	243	(% style="color:blue" %)The calibration steps are as follows:
	244
15.1	245	(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.
	246
45.20	247	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	248	\|=(% 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	249	\|(% 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" %)(((
	250	0X00
	251	0X00
	252	0X37
	253	0X32
	254	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	255
15.1	256	1413*10 gives 0X00003732
14.1	257
45.48	258	response:
15.1	259
45.20	260	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	261	\|=(% 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	262	\|(% 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
	263
	264	(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
	265
45.20	266	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	267	\|=(% 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	268	\|(% 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" %)(((
	269	0X00
	270	0X01
	271	0XF7
	272	0X20
	273	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	274
15.1	275	12880*10 gives 0X01F720
	276
45.48	277	response:
14.1	278
45.20	279	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	280	\|=(% 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	281	\|(% 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
	282
61.2	283
	284
72.3	285	EC200
61.2	286
62.7	287	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	288
61.3	289	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
63.1	290	\|=(% 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
	291	\|(% 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	292	0X00
61.7	293	0X01
61.3	294	0X00
	295	0X00
61.9	296	0X05
	297	0X85
63.1	298	)))\|(% style="width:1px" %)0X1c\|(% style="width:1px" %)(((
62.1	299	(((
63.1	300	0X25
62.1	301	)))
63.1	302	)))
62.1	303
63.1	304	response:
	305
	306	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	307	\|=(% 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
	308	\|(% 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" %)(((
	309	0X80
	310	)))\|(% style="width:60px" %)0X3e(((
62.3	311
62.2	312	)))
61.3	313
63.1	314	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	315
63.1	316	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	317	\|=(% 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
	318	\|(% 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" %)(((
	319	0X00
	320	0X02
	321	0X00
	322	0X01
	323	0Xb2
	324	0Xce
	325	)))\|(% style="width:1px" %)0X3e\|(% style="width:1px" %)(((
	326	(((
	327	0X22
	328	)))
	329	)))
62.3	330
63.1	331	response:
	332
	333	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	334	\|=(% 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
	335	\|(% 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" %)(((
	336	0X80
	337	)))\|(% style="width:60px" %)0X3e
	338
8.1	339	= 2. DR-PH01 Water PH Sensor =
	340
28.2	341	== 2.1 Specification ==
9.1	342
45.20	343
26.1	344	* Power Input: DC7~~30
45.62	345
26.1	346	* Power Consumption : < 0.5W
45.62	347
26.1	348	* Interface: RS485. 9600 Baud Rate
45.62	349
26.1	350	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	351
	352	* pH measurement error: ±0.15pH
	353
	354	* Repeatability error: ±0.02pH
	355
	356	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	357
	358	* Temperature measurement error: ±0.5°C
	359
59.1	360	* Working environment:
	361	** Ambient Temperature: 0–60°C
	362	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	363
26.1	364	* Temperature Accuracy: ±0.5 °C
45.62	365
26.1	366	* IP Rated: IP68
45.62	367
26.1	368	* Max Pressure: 0.6MPa
	369
	370	== 2.2 Wiring ==
	371
45.49	372
62.3	373	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	374
45.1	375
45.62	376	== 2.3 Mechinical Drawing ==
26.1	377
45.49	378
62.3	379	[[image:image-20240714174241-2.png]]
26.1	380
	381
	382	== 2.4 Installation Notice ==
	383
45.49	384
26.1	385	Do not power on while connect the cables. Double check the wiring before power on.
	386
	387	Installation Photo as reference:
	388
45.50	389	(% style="color:blue" %)Submerged installation:
26.1	390
	391	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.
	392
62.3	393	[[image:image-20240718191348-6.png]]
26.1	394
45.50	395	(% style="color:blue" %)Pipeline installation:
26.1	396
	397	Connect the equipment to the pipeline through the 3/4 thread.
	398
62.3	399	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
26.1	400
45.50	401	(% style="color:blue" %)Sampling:
26.1	402
	403	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.
	404
45.50	405	(% style="color:blue" %)Measure the pH of the water sample:
26.1	406
	407	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.
	408
	409
39.1	410	== 2.5 Maintenance ==
26.1	411
	412
	413	* 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	414
26.1	415	* 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	416
26.1	417	* 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	418
26.1	419	* 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	420
26.1	421	* 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	422
26.1	423	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	424
26.1	425	* 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	426
26.1	427	* 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.
	428
45.62	429	* 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.
	430
26.1	431	== 2.6 RS485 Commands ==
	432
45.51	433
27.1	434	RS485 signaldefault address 0x10
	435	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	436
45.51	437
33.2	438	=== 2.6.1 Query address ===
27.1	439
45.51	440
45.52	441	send:
27.1	442
45.52	443	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	444	\|=(% 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	445	\|(% 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
	446
45.52	447	response:
27.1	448
45.52	449	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	450	\|=(% 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	451	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	452
	453	=== 2.6.2 Change address ===
	454
45.52	455
27.1	456	For example: Change the address of the sensor with address 1 to 2, master → slave
	457
45.52	458	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	459	\|=(% 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	460	\|(% 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
	461
	462	If the sensor receives correctly, the data is returned along the original path.
	463
45.52	464	(% 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	465
45.52	466
27.1	467	=== 2.6.3 Modify intercept ===
	468
	469
45.52	470	send:
27.1	471
45.52	472	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	473	\|=(% 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	474	\|(% 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	475	0XA5
	476	)))
	477
34.4	478	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	479
45.52	480	response:
27.1	481
45.52	482	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	483	\|=(% 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	484	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	485	0X00
	486	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	487	0XA5
	488	)))
	489
	490	=== 2.6.4 Query data ===
	491
	492
34.3	493	Query the data (PH) of the sensor (address 10), host → slave
9.1	494
45.52	495	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.2	496	\|=(% 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
	497	\|(% 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	498
	499	If the sensor receives correctly, the following data will be returned, slave → host
	500
45.75	501	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	502	\|=(% 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	503	\|(% 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	504
11.1	505	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	506
11.1	507	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	508
	509	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.
	510
	511
27.1	512	=== 2.6.5 Calibration Method ===
	513
	514
	515	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	516
	517	(% style="color:blue" %)The calibration steps are as follows:
	518
27.1	519	(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.
	520
45.52	521	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	522	\|=(% 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	523	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	524	0X00
	525	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	526	0XF1
	527	)))
	528
	529	(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.
	530
45.52	531	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	532	\|=(% 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	533	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	534	0X00
	535	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	536	0X31
	537	)))
	538
	539	(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.
	540
45.52	541	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	542	\|=(% 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	543	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	544	0X00
	545	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	546	0X31
	547	)))
	548
	549	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.
	550
	551
8.1	552	= 3. DR-ORP1 Water ORP Sensor =
	553
28.2	554	== 3.1 Specification ==
27.2	555
45.75	556
27.2	557	* Power Input: DC7~~30
45.69	558
32.1	559	* Measuring range: -1999~~1999mV
45.69	560
45.70	561	* Resolution: 1mV
45.69	562
27.2	563	* Interface: RS485. 9600 Baud Rate
45.69	564
27.2	565	* Measurement error: ±3mV
45.69	566
27.2	567	* Stability: ≤2mv/24 hours
45.69	568
59.1	569	* Working environment:
	570	** Ambient Temperature: 0–60°C
	571	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	572
27.2	573	* IP Rated: IP68
45.69	574
27.2	575	* Max Pressure: 0.6MPa
	576
	577	== 3.2 Wiring ==
	578
45.75	579
62.3	580	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	581
45.1	582
27.2	583	== 3.3 Mechinical Drawing ==
	584
45.75	585
62.3	586	[[image:image-20240714174241-2.png]]
27.2	587
45.77	588
27.2	589	== 3.4 Installation Notice ==
	590
45.75	591
27.2	592	Do not power on while connect the cables. Double check the wiring before power on.
	593
45.75	594	Installation Photo as reference:
27.2	595
45.70	596	(% style="color:blue" %) Submerged installation:
27.2	597
	598	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.
	599
62.3	600	[[image:image-20240718191348-6.png]]
27.2	601
45.70	602	(% style="color:blue" %) Pipeline installation:
27.2	603
	604	Connect the equipment to the pipeline through the 3/4 thread.
	605
62.3	606	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
27.2	607
	608
39.1	609	== 3.5 Maintenance ==
8.1	610
9.1	611
29.1	612	(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	613
29.1	614	(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	615
29.1	616	(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	617
29.1	618	(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	619
29.1	620	(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	621
29.1	622	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	623
29.1	624	(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	625
29.1	626	(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	627
29.1	628	(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.
	629
45.75	630
29.1	631	== 3.6 RS485 Commands ==
	632
	633
	634	RS485 signaldefault address 0x13
	635	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	636
45.75	637
33.2	638	=== 3.6.1 Query address ===
29.1	639
	640
45.75	641	send:
	642
45.69	643	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	644	\|=(% 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	645	\|(% 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
	646
45.75	647	response:
29.1	648
45.69	649	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	650	\|=(% 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	651	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	652
	653	=== 3.6.2 Change address ===
	654
45.75	655
29.1	656	For example: Change the address of the sensor with address 1 to 2, master → slave
	657
45.71	658	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	659	\|=(% 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	660	\|(% 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
	661
	662	If the sensor receives correctly, the data is returned along the original path.
	663
45.75	664	(% 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	665
45.75	666
29.1	667	=== 3.6.3 Modify intercept ===
	668
	669
45.75	670	send:
	671
45.69	672	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	673	\|=(% 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	674	\|(% 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" %)(((
	675	0X96
	676	)))
	677
	678	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	679
45.75	680	response:
29.1	681
45.69	682	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	683	\|=(% 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	684	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	685	0X00
	686	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	687	0X96
	688	)))
	689
	690	=== 3.6.4 Query data ===
	691
9.1	692
37.1	693	Query the data (ORP) of the sensor (address 13), host → slave
35.1	694
45.69	695	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	696	\|=(% 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	697	\|(% 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
	698
	699	If the sensor receives correctly, the following data will be returned, slave → host
	700
45.69	701	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	702	\|=(% 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	703	\|(% 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
	704
11.1	705	The query data command is 13 03 00 00 00 01 87 78
10.1	706
11.1	707	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	708
11.1	709	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	710
	711
29.1	712	=== 3.6.5 Calibration Method ===
	713
45.75	714
29.1	715	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	716	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	717	enter the following calibration command, and the 86mV point calibration is completed;
	718
45.69	719	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	720	\|=(% 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	721	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	722	0X00
	723	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	724	0X03
	725	)))
	726
	727	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.
	728
45.69	729	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	730	\|=(% 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
	731	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	732	0X00
	733	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	734	0XC3
	735	)))
	736
8.1	737	= 4. DR-DO1 Dissolved Oxygen Sensor =
	738
32.1	739	== 4.1 Specification ==
	740
33.2	741
58.1	742	* Measuring range: 0-20mg/L, 0–50℃
45.77	743
58.1	744	* Accuracy: 3%, ±0.5℃
45.77	745
58.1	746	* Resolution: 0.01 mg/L, 0.01℃
45.77	747
33.2	748	* Maximum operating pressure: 6 bar
45.77	749
33.2	750	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	751
33.2	752	* Power supply voltage: 5-24V DC
45.77	753
59.1	754	* Working environment:
	755	** Ambient Temperature: 0–60°C
	756	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	757
32.1	758	* Power consumption: ≤0.5W
	759
33.2	760	== 4.2 wiring ==
32.1	761
45.77	762
62.3	763	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	764
	765
45.77	766	== 4.3 Impedance requirements for current signals ==
33.2	767
45.77	768
46.2	769	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	770	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	771	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	772
32.1	773	== 4.4 Mechinical Drawing ==
	774
	775
62.3	776	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	777
33.2	778
39.1	779	== 4.5 Instructions for use and maintenance ==
32.1	780
45.77	781
32.1	782	* 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	783
32.1	784	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	785
	786	== 4.6 RS485 Commands ==
	787
45.77	788
34.1	789	RS485 signaldefault address 0x14
	790	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	791
45.77	792
32.3	793	=== 4.6.1 Query address ===
32.1	794
32.3	795
45.77	796	send:
	797
	798	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	799	\|=(% 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	800	\|(% 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	801
34.1	802	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	803
	804
45.77	805	response:
32.3	806
34.1	807	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	808	Register 1 data high and register 1 data low indicate the sensor version
32.3	809
45.77	810	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	811	\|=(% 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	812	\|(% 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
	813
33.2	814	=== 4.6.2 Change address ===
32.3	815
45.77	816
34.1	817	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	818
45.77	819	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	820	\|=(% 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	821	\|(% 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
	822
45.77	823	response:
32.3	824
45.77	825	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	826	\|=(% 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	827	\|(% 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	828
34.1	829	=== 4.6.3 Query data ===
9.1	830
	831
34.2	832	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	833
45.77	834	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	835	\|=(% 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	836	\|(% 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
	837
34.2	838	If the sensor receives correctly, the following data will be returned, slave → host
34.1	839
45.77	840	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	841	\|=(% 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	842	\|(% 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	843
11.1	844	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	845
	846	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
	847
11.1	848
34.2	849	Query the data (temperature) of the sensor (address 14), host → slave
	850
45.77	851	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	852	\|=(% 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	853	\|(% 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
	854
	855	If the sensor receives correctly, the following data will be returned, slave → host
	856
45.77	857	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	858	\|=(% 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	859	\|(% 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
	860
	861	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.
	862
45.77	863	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	864
	865
8.1	866	= 5. DR-TS1 Water Turbidity Sensor =
	867
45.77	868	== 5.1 Specification ==
9.1	869
10.1	870
49.1	871	* Measuring range: 0.1~~1000.0NTU
32.3	872
	873	* Accuracy: ±5%
45.77	874
32.3	875	* Resolution: 0.1NTU
45.77	876
32.3	877	* Stability: ≤3mV/24 hours
	878
54.1	879	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	880
55.1	881	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	882
59.1	883	* Working environment:
	884	** Ambient Temperature: 0–60°C
	885	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	886
	887	* Power consumption: ≤ 0.5W
	888
32.3	889	== 5.2 wiring ==
	890
45.77	891
62.3	892	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	893
45.1	894
32.3	895	== 5.3 Impedance requirements for current signals ==
	896
45.88	897
46.3	898	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	899	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	900	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	901
	902	== 5.4 Mechinical Drawing ==
	903
45.77	904
62.3	905	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
32.3	906
	907
39.1	908	== 5.5 Instructions for use and maintenance ==
32.3	909
45.77	910
32.3	911	* 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	912
32.3	913	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	914
	915	== 5.6 RS485 Commands ==
	916
	917
36.1	918	RS485 signaldefault address 0x15
	919	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	920
45.77	921
36.1	922	=== 5.6.1 Query address ===
	923
32.3	924
45.77	925	send:
	926
	927	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	928	\|=(% 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	929	\|(% 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	930
	931	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.
	932
	933
45.77	934	response:
32.3	935
45.77	936	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	937	\|=(% 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	938	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	939
36.1	940	=== 5.6.2 Change address ===
32.3	941
45.87	942
36.1	943	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	944
45.77	945	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	946	\|=(% 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	947	\|(% 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
	948
	949	If the sensor receives correctly, the data is returned along the original path.
	950
45.77	951	(% 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.
	952
45.84	953
36.1	954	=== 5.6.3 Query data ===
	955
	956
	957	Query the data (turbidity) of the sensor (address 15), host → slave
	958
45.77	959	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	960	\|=(% 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	961	\|(% 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
	962
	963	If the sensor receives correctly, the following data will be returned, slave → host
	964
45.77	965	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	966	\|=(% 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	967	\|(% 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
	968
11.1	969	The query data command is 15 03 00 00 00 01 87 1E
10.1	970
11.1	971	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	972
	973	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	974
	975
68.1	976	= 6. DR-CL Water CL Probe =
49.2	977
63.2	978	== 6.1 Specification: ==
49.2	979
63.2	980	* Power Input: DC7~~30
	981
	982	* Power Consumption : 0.19W
	983
	984	* Interface: RS485. 9600 Baud Rate
	985
	986	* CL Range & Resolution:
	987	CL2ML:**0-2mg/L
	988	CL10ML:**0-10mg/L
63.3	989	Resolution:**0.01mg/L
63.2	990
63.3	991	* CL Accuracy: ±5% FS
63.2	992	* Temperature Accuracy: ±0.5 °C
	993	* Working environment:
63.3	994	** Ambient Temperature: 0–50°C
	995	** pH:4-9
	996	** Flow rate: 30L/h~~60L/h (flow tank installation)
63.2	997	* IP Rated: IP68
	998
	999	* Max Pressure: 0.6MPa
	1000
68.1	1001	== 6.2 Wiring ==
63.2	1002
66.1	1003	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
63.2	1004
68.1	1005	== 6.3 Mechinical Drawing ==
66.1	1006
	1007	[[image:1752573238705-910.png\|\|height="694" width="278"]]
	1008
67.2	1009	== 6.4 Installation ==
66.1	1010
67.2	1011	Flow-through installation: Use the matching flow slot for installation. The device and the flow slot are installed tightly.
66.1	1012
67.2	1013	The measuring end is completely immersed in the measured liquid to ensure a steady flow rate without bubbles.
66.1	1014
67.2	1015	It is recommended that the flow rate be controlled at 30-60Lh to ensure the accuracy of the test.
	1016
	1017	[[image:1752573643879-991.png\|\|height="360" width="343"]]
	1018
69.1	1019	== 6.5 Maintenance ==
67.2	1020
69.1	1021	* 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!
	1022	* After using the electrode, please clean the electrode head with clean water and cover it with a protective cover.
	1023	* 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.
	1024	* 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.
	1025	* 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.
	1026	* 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.
	1027	The electrode has a service life of about one year, and a new electrode should be replaced in time after aging.
	1028	* Before the cable plug and the device plug are locked, do not put the plug part into water.
67.2	1029
	1030
69.1	1031
	1032	== 6.6 RS485 Commands ==
	1033
	1034	RS485 signal
	1035	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	1036
	1037
69.2	1038	== 6.7 Query data ==
69.1	1039
69.2	1040	Example 1: Read the current residual chlorine concentration of the device with address 01
69.1	1041
69.2	1042	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.5	1043	\|=(% 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
	1044	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X01\|(% style="width:72px" %)(((
69.3	1045	0X84
69.10	1046	)))\|(% style="width:77px" %)0X0A
69.1	1047
69.5	1048	response:
69.1	1049
69.5	1050	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.6	1051	\|=(% 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
	1052	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X03\|(% style="width:110px" %)0X02\|(% style="width:94px" %)0X03 0X16\|(% style="width:72px" %)(((
69.7	1053	0X39
69.10	1054	)))\|(% style="width:77px" %)0X7A
69.1	1055
69.8	1056	Calculation of residual chlorine concentration: 316H (hexadecimal) = 790 => residual chlorine = 7.90
69.1	1057
	1058
69.9	1059	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	1060
69.10	1061	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.12	1062	\|=(% 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	1063	\|(% 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	1064
69.15	1065	response:
69.1	1066
69.15	1067	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.17	1068	\|=(% 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	1069	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X10\|(% style="width:110px" %)0X01 0X12\|(% style="width:94px" %)0X00 0X02\|(% style="width:72px" %)(((
	1070	0XE5
	1071	)))\|(% style="width:77px" %)0X0D
69.1	1072
	1073
	1074
66.1	1075	= 7. Water Quality Sensor Datasheet =
	1076
51.1	1077	* [[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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