Wiki source code of Water Quality Sensors

Version 72.3 by Karry Zhuang on 2025/07/16 09:26

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" %)
	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;" %)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
	227	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X04\|(% style="width:72px" %)(((
	228	0XC5
	229	)))\|(% style="width:77px" %)0XC8
	230
	231
	232
	233
	234
16.2	235	=== 1.7.5 Calibration Method ===
12.1	236
61.2	237	ECK1 and ECK10.0
12.1	238
15.1	239	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	240
45.63	241	(% style="color:blue" %)The calibration steps are as follows:
	242
15.1	243	(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.
	244
45.20	245	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	246	\|=(% 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	247	\|(% 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" %)(((
	248	0X00
	249	0X00
	250	0X37
	251	0X32
	252	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	253
15.1	254	1413*10 gives 0X00003732
14.1	255
45.48	256	response:
15.1	257
45.20	258	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	259	\|=(% 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	260	\|(% style="width:99px" %)0X12\|(% style="width:112px" %)0X10\|(% style="width:135px" %)0X00\|(% style="width:126px" %)0X26\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X02\|(% style="width:1px" %)0XA2\|(% style="width:1px" %)0XA0
	261
	262	(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
	263
45.20	264	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	265	\|=(% 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	266	\|(% 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" %)(((
	267	0X00
	268	0X01
	269	0XF7
	270	0X20
	271	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	272
15.1	273	12880*10 gives 0X01F720
	274
45.48	275	response:
14.1	276
45.20	277	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	278	\|=(% 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	279	\|(% 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
	280
61.2	281
	282
72.3	283	EC200
61.2	284
62.7	285	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	286
61.3	287	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
63.1	288	\|=(% 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
	289	\|(% 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	290	0X00
61.7	291	0X01
61.3	292	0X00
	293	0X00
61.9	294	0X05
	295	0X85
63.1	296	)))\|(% style="width:1px" %)0X1c\|(% style="width:1px" %)(((
62.1	297	(((
63.1	298	0X25
62.1	299	)))
63.1	300	)))
62.1	301
63.1	302	response:
	303
	304	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	305	\|=(% 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
	306	\|(% 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" %)(((
	307	0X80
	308	)))\|(% style="width:60px" %)0X3e(((
62.3	309
62.2	310	)))
61.3	311
63.1	312	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	313
63.1	314	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	315	\|=(% 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
	316	\|(% 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" %)(((
	317	0X00
	318	0X02
	319	0X00
	320	0X01
	321	0Xb2
	322	0Xce
	323	)))\|(% style="width:1px" %)0X3e\|(% style="width:1px" %)(((
	324	(((
	325	0X22
	326	)))
	327	)))
62.3	328
63.1	329	response:
	330
	331	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	332	\|=(% 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
	333	\|(% 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" %)(((
	334	0X80
	335	)))\|(% style="width:60px" %)0X3e
	336
8.1	337	= 2. DR-PH01 Water PH Sensor =
	338
28.2	339	== 2.1 Specification ==
9.1	340
45.20	341
26.1	342	* Power Input: DC7~~30
45.62	343
26.1	344	* Power Consumption : < 0.5W
45.62	345
26.1	346	* Interface: RS485. 9600 Baud Rate
45.62	347
26.1	348	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	349
	350	* pH measurement error: ±0.15pH
	351
	352	* Repeatability error: ±0.02pH
	353
	354	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	355
	356	* Temperature measurement error: ±0.5°C
	357
59.1	358	* Working environment:
	359	** Ambient Temperature: 0–60°C
	360	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	361
26.1	362	* Temperature Accuracy: ±0.5 °C
45.62	363
26.1	364	* IP Rated: IP68
45.62	365
26.1	366	* Max Pressure: 0.6MPa
	367
	368	== 2.2 Wiring ==
	369
45.49	370
62.3	371	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	372
45.1	373
45.62	374	== 2.3 Mechinical Drawing ==
26.1	375
45.49	376
62.3	377	[[image:image-20240714174241-2.png]]
26.1	378
	379
	380	== 2.4 Installation Notice ==
	381
45.49	382
26.1	383	Do not power on while connect the cables. Double check the wiring before power on.
	384
	385	Installation Photo as reference:
	386
45.50	387	(% style="color:blue" %)Submerged installation:
26.1	388
	389	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.
	390
62.3	391	[[image:image-20240718191348-6.png]]
26.1	392
45.50	393	(% style="color:blue" %)Pipeline installation:
26.1	394
	395	Connect the equipment to the pipeline through the 3/4 thread.
	396
62.3	397	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
26.1	398
45.50	399	(% style="color:blue" %)Sampling:
26.1	400
	401	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.
	402
45.50	403	(% style="color:blue" %)Measure the pH of the water sample:
26.1	404
	405	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.
	406
	407
39.1	408	== 2.5 Maintenance ==
26.1	409
	410
	411	* 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	412
26.1	413	* 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	414
26.1	415	* 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	416
26.1	417	* 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	418
26.1	419	* 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	420
26.1	421	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	422
26.1	423	* 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	424
26.1	425	* 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.
	426
45.62	427	* 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.
	428
26.1	429	== 2.6 RS485 Commands ==
	430
45.51	431
27.1	432	RS485 signaldefault address 0x10
	433	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	434
45.51	435
33.2	436	=== 2.6.1 Query address ===
27.1	437
45.51	438
45.52	439	send:
27.1	440
45.52	441	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	442	\|=(% 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	443	\|(% 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
	444
45.52	445	response:
27.1	446
45.52	447	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	448	\|=(% 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	449	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	450
	451	=== 2.6.2 Change address ===
	452
45.52	453
27.1	454	For example: Change the address of the sensor with address 1 to 2, master → slave
	455
45.52	456	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	457	\|=(% 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	458	\|(% 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
	459
	460	If the sensor receives correctly, the data is returned along the original path.
	461
45.52	462	(% 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	463
45.52	464
27.1	465	=== 2.6.3 Modify intercept ===
	466
	467
45.52	468	send:
27.1	469
45.52	470	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	471	\|=(% 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	472	\|(% 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	473	0XA5
	474	)))
	475
34.4	476	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	477
45.52	478	response:
27.1	479
45.52	480	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	481	\|=(% 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	482	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	483	0X00
	484	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	485	0XA5
	486	)))
	487
	488	=== 2.6.4 Query data ===
	489
	490
34.3	491	Query the data (PH) of the sensor (address 10), host → slave
9.1	492
45.52	493	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.2	494	\|=(% 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
	495	\|(% 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	496
	497	If the sensor receives correctly, the following data will be returned, slave → host
	498
45.75	499	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	500	\|=(% 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	501	\|(% 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	502
11.1	503	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	504
11.1	505	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	506
	507	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.
	508
	509
27.1	510	=== 2.6.5 Calibration Method ===
	511
	512
	513	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	514
	515	(% style="color:blue" %)The calibration steps are as follows:
	516
27.1	517	(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.
	518
45.52	519	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	520	\|=(% 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	521	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	522	0X00
	523	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	524	0XF1
	525	)))
	526
	527	(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.
	528
45.52	529	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	530	\|=(% 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	531	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	532	0X00
	533	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	534	0X31
	535	)))
	536
	537	(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.
	538
45.52	539	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	540	\|=(% 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	541	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	542	0X00
	543	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	544	0X31
	545	)))
	546
	547	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.
	548
	549
8.1	550	= 3. DR-ORP1 Water ORP Sensor =
	551
28.2	552	== 3.1 Specification ==
27.2	553
45.75	554
27.2	555	* Power Input: DC7~~30
45.69	556
32.1	557	* Measuring range: -1999~~1999mV
45.69	558
45.70	559	* Resolution: 1mV
45.69	560
27.2	561	* Interface: RS485. 9600 Baud Rate
45.69	562
27.2	563	* Measurement error: ±3mV
45.69	564
27.2	565	* Stability: ≤2mv/24 hours
45.69	566
59.1	567	* Working environment:
	568	** Ambient Temperature: 0–60°C
	569	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	570
27.2	571	* IP Rated: IP68
45.69	572
27.2	573	* Max Pressure: 0.6MPa
	574
	575	== 3.2 Wiring ==
	576
45.75	577
62.3	578	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	579
45.1	580
27.2	581	== 3.3 Mechinical Drawing ==
	582
45.75	583
62.3	584	[[image:image-20240714174241-2.png]]
27.2	585
45.77	586
27.2	587	== 3.4 Installation Notice ==
	588
45.75	589
27.2	590	Do not power on while connect the cables. Double check the wiring before power on.
	591
45.75	592	Installation Photo as reference:
27.2	593
45.70	594	(% style="color:blue" %) Submerged installation:
27.2	595
	596	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.
	597
62.3	598	[[image:image-20240718191348-6.png]]
27.2	599
45.70	600	(% style="color:blue" %) Pipeline installation:
27.2	601
	602	Connect the equipment to the pipeline through the 3/4 thread.
	603
62.3	604	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
27.2	605
	606
39.1	607	== 3.5 Maintenance ==
8.1	608
9.1	609
29.1	610	(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	611
29.1	612	(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	613
29.1	614	(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	615
29.1	616	(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	617
29.1	618	(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	619
29.1	620	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	621
29.1	622	(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	623
29.1	624	(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	625
29.1	626	(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.
	627
45.75	628
29.1	629	== 3.6 RS485 Commands ==
	630
	631
	632	RS485 signaldefault address 0x13
	633	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	634
45.75	635
33.2	636	=== 3.6.1 Query address ===
29.1	637
	638
45.75	639	send:
	640
45.69	641	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	642	\|=(% 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	643	\|(% 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
	644
45.75	645	response:
29.1	646
45.69	647	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	648	\|=(% 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	649	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	650
	651	=== 3.6.2 Change address ===
	652
45.75	653
29.1	654	For example: Change the address of the sensor with address 1 to 2, master → slave
	655
45.71	656	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	657	\|=(% 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	658	\|(% 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
	659
	660	If the sensor receives correctly, the data is returned along the original path.
	661
45.75	662	(% 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	663
45.75	664
29.1	665	=== 3.6.3 Modify intercept ===
	666
	667
45.75	668	send:
	669
45.69	670	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	671	\|=(% 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	672	\|(% 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" %)(((
	673	0X96
	674	)))
	675
	676	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	677
45.75	678	response:
29.1	679
45.69	680	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	681	\|=(% 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	682	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	683	0X00
	684	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	685	0X96
	686	)))
	687
	688	=== 3.6.4 Query data ===
	689
9.1	690
37.1	691	Query the data (ORP) of the sensor (address 13), host → slave
35.1	692
45.69	693	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	694	\|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 68px; background-color: 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	695	\|(% 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
	696
	697	If the sensor receives correctly, the following data will be returned, slave → host
	698
45.69	699	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	700	\|=(% 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	701	\|(% 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
	702
11.1	703	The query data command is 13 03 00 00 00 01 87 78
10.1	704
11.1	705	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	706
11.1	707	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	708
	709
29.1	710	=== 3.6.5 Calibration Method ===
	711
45.75	712
29.1	713	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	714	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	715	enter the following calibration command, and the 86mV point calibration is completed;
	716
45.69	717	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	718	\|=(% 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	719	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	720	0X00
	721	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	722	0X03
	723	)))
	724
	725	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.
	726
45.69	727	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	728	\|=(% 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
	729	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	730	0X00
	731	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	732	0XC3
	733	)))
	734
8.1	735	= 4. DR-DO1 Dissolved Oxygen Sensor =
	736
32.1	737	== 4.1 Specification ==
	738
33.2	739
58.1	740	* Measuring range: 0-20mg/L, 0–50℃
45.77	741
58.1	742	* Accuracy: 3%, ±0.5℃
45.77	743
58.1	744	* Resolution: 0.01 mg/L, 0.01℃
45.77	745
33.2	746	* Maximum operating pressure: 6 bar
45.77	747
33.2	748	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	749
33.2	750	* Power supply voltage: 5-24V DC
45.77	751
59.1	752	* Working environment:
	753	** Ambient Temperature: 0–60°C
	754	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	755
32.1	756	* Power consumption: ≤0.5W
	757
33.2	758	== 4.2 wiring ==
32.1	759
45.77	760
62.3	761	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	762
	763
45.77	764	== 4.3 Impedance requirements for current signals ==
33.2	765
45.77	766
46.2	767	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	768	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	769	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	770
32.1	771	== 4.4 Mechinical Drawing ==
	772
	773
62.3	774	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	775
33.2	776
39.1	777	== 4.5 Instructions for use and maintenance ==
32.1	778
45.77	779
32.1	780	* 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	781
32.1	782	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	783
	784	== 4.6 RS485 Commands ==
	785
45.77	786
34.1	787	RS485 signaldefault address 0x14
	788	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	789
45.77	790
32.3	791	=== 4.6.1 Query address ===
32.1	792
32.3	793
45.77	794	send:
	795
	796	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	797	\|=(% 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	798	\|(% 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	799
34.1	800	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	801
	802
45.77	803	response:
32.3	804
34.1	805	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	806	Register 1 data high and register 1 data low indicate the sensor version
32.3	807
45.77	808	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	809	\|=(% 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	810	\|(% 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
	811
33.2	812	=== 4.6.2 Change address ===
32.3	813
45.77	814
34.1	815	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	816
45.77	817	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	818	\|=(% 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	819	\|(% 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
	820
45.77	821	response:
32.3	822
45.77	823	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	824	\|=(% 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	825	\|(% 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	826
34.1	827	=== 4.6.3 Query data ===
9.1	828
	829
34.2	830	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	831
45.77	832	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	833	\|=(% 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	834	\|(% 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
	835
34.2	836	If the sensor receives correctly, the following data will be returned, slave → host
34.1	837
45.77	838	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	839	\|=(% 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	840	\|(% 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	841
11.1	842	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	843
	844	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
	845
11.1	846
34.2	847	Query the data (temperature) of the sensor (address 14), host → slave
	848
45.77	849	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	850	\|=(% 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	851	\|(% 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
	852
	853	If the sensor receives correctly, the following data will be returned, slave → host
	854
45.77	855	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	856	\|=(% 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	857	\|(% 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
	858
	859	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.
	860
45.77	861	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	862
	863
8.1	864	= 5. DR-TS1 Water Turbidity Sensor =
	865
45.77	866	== 5.1 Specification ==
9.1	867
10.1	868
49.1	869	* Measuring range: 0.1~~1000.0NTU
32.3	870
	871	* Accuracy: ±5%
45.77	872
32.3	873	* Resolution: 0.1NTU
45.77	874
32.3	875	* Stability: ≤3mV/24 hours
	876
54.1	877	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	878
55.1	879	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	880
59.1	881	* Working environment:
	882	** Ambient Temperature: 0–60°C
	883	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	884
	885	* Power consumption: ≤ 0.5W
	886
32.3	887	== 5.2 wiring ==
	888
45.77	889
62.3	890	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	891
45.1	892
32.3	893	== 5.3 Impedance requirements for current signals ==
	894
45.88	895
46.3	896	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	897	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	898	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	899
	900	== 5.4 Mechinical Drawing ==
	901
45.77	902
62.3	903	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
32.3	904
	905
39.1	906	== 5.5 Instructions for use and maintenance ==
32.3	907
45.77	908
32.3	909	* 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	910
32.3	911	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	912
	913	== 5.6 RS485 Commands ==
	914
	915
36.1	916	RS485 signaldefault address 0x15
	917	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	918
45.77	919
36.1	920	=== 5.6.1 Query address ===
	921
32.3	922
45.77	923	send:
	924
	925	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	926	\|=(% 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	927	\|(% 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	928
	929	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.
	930
	931
45.77	932	response:
32.3	933
45.77	934	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	935	\|=(% 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	936	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	937
36.1	938	=== 5.6.2 Change address ===
32.3	939
45.87	940
36.1	941	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	942
45.77	943	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	944	\|=(% 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	945	\|(% 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
	946
	947	If the sensor receives correctly, the data is returned along the original path.
	948
45.77	949	(% 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.
	950
45.84	951
36.1	952	=== 5.6.3 Query data ===
	953
	954
	955	Query the data (turbidity) of the sensor (address 15), host → slave
	956
45.77	957	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	958	\|=(% 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	959	\|(% 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
	960
	961	If the sensor receives correctly, the following data will be returned, slave → host
	962
45.77	963	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	964	\|=(% 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	965	\|(% 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
	966
11.1	967	The query data command is 15 03 00 00 00 01 87 1E
10.1	968
11.1	969	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	970
	971	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	972
	973
68.1	974	= 6. DR-CL Water CL Probe =
49.2	975
63.2	976	== 6.1 Specification: ==
49.2	977
63.2	978	* Power Input: DC7~~30
	979
	980	* Power Consumption : 0.19W
	981
	982	* Interface: RS485. 9600 Baud Rate
	983
	984	* CL Range & Resolution:
	985	CL2ML:**0-2mg/L
	986	CL10ML:**0-10mg/L
63.3	987	Resolution:**0.01mg/L
63.2	988
63.3	989	* CL Accuracy: ±5% FS
63.2	990	* Temperature Accuracy: ±0.5 °C
	991	* Working environment:
63.3	992	** Ambient Temperature: 0–50°C
	993	** pH:4-9
	994	** Flow rate: 30L/h~~60L/h (flow tank installation)
63.2	995	* IP Rated: IP68
	996
	997	* Max Pressure: 0.6MPa
	998
68.1	999	== 6.2 Wiring ==
63.2	1000
66.1	1001	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
63.2	1002
68.1	1003	== 6.3 Mechinical Drawing ==
66.1	1004
	1005	[[image:1752573238705-910.png\|\|height="694" width="278"]]
	1006
67.2	1007	== 6.4 Installation ==
66.1	1008
67.2	1009	Flow-through installation: Use the matching flow slot for installation. The device and the flow slot are installed tightly.
66.1	1010
67.2	1011	The measuring end is completely immersed in the measured liquid to ensure a steady flow rate without bubbles.
66.1	1012
67.2	1013	It is recommended that the flow rate be controlled at 30-60Lh to ensure the accuracy of the test.
	1014
	1015	[[image:1752573643879-991.png\|\|height="360" width="343"]]
	1016
69.1	1017	== 6.5 Maintenance ==
67.2	1018
69.1	1019	* 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!
	1020	* After using the electrode, please clean the electrode head with clean water and cover it with a protective cover.
	1021	* 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.
	1022	* 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.
	1023	* 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.
	1024	* 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.
	1025	The electrode has a service life of about one year, and a new electrode should be replaced in time after aging.
	1026	* Before the cable plug and the device plug are locked, do not put the plug part into water.
67.2	1027
	1028
69.1	1029
	1030	== 6.6 RS485 Commands ==
	1031
	1032	RS485 signal
	1033	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	1034
	1035
69.2	1036	== 6.7 Query data ==
69.1	1037
69.2	1038	Example 1: Read the current residual chlorine concentration of the device with address 01
69.1	1039
69.2	1040	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.5	1041	\|=(% 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
	1042	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X01\|(% style="width:72px" %)(((
69.3	1043	0X84
69.10	1044	)))\|(% style="width:77px" %)0X0A
69.1	1045
69.5	1046	response:
69.1	1047
69.5	1048	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.6	1049	\|=(% 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
	1050	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X03\|(% style="width:110px" %)0X02\|(% style="width:94px" %)0X03 0X16\|(% style="width:72px" %)(((
69.7	1051	0X39
69.10	1052	)))\|(% style="width:77px" %)0X7A
69.1	1053
69.8	1054	Calculation of residual chlorine concentration: 316H (hexadecimal) = 790 => residual chlorine = 7.90
69.1	1055
	1056
69.9	1057	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	1058
69.10	1059	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.12	1060	\|=(% 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	1061	\|(% 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	1062
69.15	1063	response:
69.1	1064
69.15	1065	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.17	1066	\|=(% 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	1067	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X10\|(% style="width:110px" %)0X01 0X12\|(% style="width:94px" %)0X00 0X02\|(% style="width:72px" %)(((
	1068	0XE5
	1069	)))\|(% style="width:77px" %)0X0D
69.1	1070
	1071
	1072
66.1	1073	= 7. Water Quality Sensor Datasheet =
	1074
51.1	1075	* [[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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