Wiki source code of Water Quality Sensors

Version 71.1 by Karry Zhuang on 2025/07/15 19:20

version	line-number	content
1.1	1	Table of Contents:
	2
62.3	3	{{toc/}}
1.1	4
	5
45.2	6
	7
7.1	8	= 1. DR-ECK Water EC Probe =
	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:
	20	ECK0.01** : 0.02 ~~ 20 μS/cm
	21	ECK0.1**: 0.2 ~~ 200.0 μS/cm
48.1	22	ECK1.0** : 0 ~~ 2,000 μS/cm Resolution: 1 μS/cm
	23	ECK10.0** : 10 ~~ 20,000 μS/cm Resolution: 10 μS/cm
59.2	24	ECK200.0** : 1 ~~ 200,000 μS/cm Resolution: 1 μS/cm
45.63	25
7.1	26	* EC Accuracy: ±1% FS
	27	* Temperature Accuracy: ±0.5 °C
59.1	28	* Working environment:
	29	** Ambient Temperature: 0–60°C
	30	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
60.2	31	** ECK200.0 Continuous monitoring of cross-section water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food, tap water, seawater and other high conductivity environments
7.1	32	* IP Rated: IP68
45.63	33
7.1	34	* Max Pressure: 0.6MPa
	35
	36	== 1.2 Application for Different Range ==
	37
45.2	38
62.3	39	[[image:image-20240714173018-1.png]]
7.1	40
	41
	42	== 1.3 Wiring ==
	43
45.2	44
62.3	45	[[image:image-20241129142314-1.png\|\|height="352" width="1108"]]
7.1	46
45.1	47
7.1	48	== 1.4 Mechinical Drawing ==
	49
60.6	50	ECK1 and ECK10 ECK200
45.2	51
7.1	52
62.3	53	[[image:image-20240714174241-2.png]] [[image:1752564223905-283.png\|\|height="399" width="160"]]
7.1	54
60.4	55
7.1	56	== 1.5 Installation ==
	57
	58
45.2	59	Electrode installation form:
15.2	60
45.2	61	A: Side wall installation
15.2	62
45.2	63	B: Top flange installation
15.2	64
45.2	65	C: Pipeline bend installation
15.2	66
45.2	67	D: Pipeline bend installation
15.2	68
45.2	69	E: Flow-through installation
15.2	70
45.2	71	F: Submerged installation
15.2	72
62.3	73	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	74
18.1	75	Several common installation methods of electrodes
15.2	76
18.1	77	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	78
18.1	79	A. Several common incorrect installation methods
15.2	80
62.3	81	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	82
45.2	83	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	84
62.3	85	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	86
45.2	87	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	88
	89	B. Correct installation method
	90
62.3	91	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	92
	93
38.1	94	== 1.6 Maintenance ==
7.1	95
	96
26.1	97	* 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	98
26.1	99	* 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	100
26.1	101	* 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	102
26.1	103	* 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	104
8.1	105	== 1.7 RS485 Commands ==
	106
15.2	107
	108	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	109	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	110
	111
16.1	112	=== 1.7.1 Query address ===
8.1	113
11.1	114
45.48	115	send:
45.2	116
	117	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	118	\|=(% 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	119	\|(% 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	120
	121	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.
	122
	123
45.48	124	response:
16.1	125
45.14	126	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	127	\|=(% 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	128	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	129
60.8	130
	131
16.1	132	=== 1.7.2 Change address ===
	133
45.2	134
16.1	135	For example: Change the address of the sensor with address 1 to 2, master → slave
	136
45.20	137	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	138	\|=(% 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	139	\|(% 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	140
	141	If the sensor receives correctly, the data is returned along the original path.
	142
45.32	143	(% 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	144
45.32	145
16.1	146	=== 1.7.3 Modify intercept ===
	147
	148
45.48	149	send:
16.1	150
45.36	151	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	152	\|=(% 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
	153	\|(% 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	154	0X07
16.1	155	)))
	156
	157	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	158
45.48	159	response:
16.1	160
45.36	161	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	162	\|=(% 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	163	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	164	0X02
27.1	165	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	166	0X8F
16.1	167	)))
	168
	169	=== 1.7.4 Query data ===
	170
37.1	171
	172	Query the data (EC,temperature) of the sensor (address 11), host → slave
	173
45.20	174	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	175	\|=(% 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	176	\|(% 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
	177
	178	If the sensor receives correctly, the following data will be returned, slave → host
	179
45.20	180	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	181	\|=(% 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	182	\|(% 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
	183
16.3	184	The address of the EC K10 sensor is 11
16.1	185
10.1	186	The query data command is 11 03 00 00 00 02 C6 9B
	187
45.48	188	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	189
	190
37.1	191	Query the data (EC,temperature) of the sensor (address 11), host → slave
	192
45.20	193	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	194	\|=(% 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	195	\|(% 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
	196
	197	If the sensor receives correctly, the following data will be returned, slave → host
	198
45.20	199	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	200	\|=(% 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	201	\|(% 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
	202
10.1	203	The address of the EC K1 sensor is 12
	204
	205	The query data command is 12 03 00 00 00 02 C6 A8
	206
45.48	207	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	208
11.1	209
60.10	210	ECK200
	211
16.2	212	=== 1.7.5 Calibration Method ===
12.1	213
61.2	214	ECK1 and ECK10.0
12.1	215
15.1	216	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	217
45.63	218	(% style="color:blue" %)The calibration steps are as follows:
	219
15.1	220	(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.
	221
45.20	222	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	223	\|=(% 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	224	\|(% 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" %)(((
	225	0X00
	226	0X00
	227	0X37
	228	0X32
	229	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	230
15.1	231	1413*10 gives 0X00003732
14.1	232
45.48	233	response:
15.1	234
45.20	235	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	236	\|=(% 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	237	\|(% 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
	238
	239	(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
	240
45.20	241	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	242	\|=(% 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	243	\|(% 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" %)(((
	244	0X00
	245	0X01
	246	0XF7
	247	0X20
	248	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	249
15.1	250	12880*10 gives 0X01F720
	251
45.48	252	response:
14.1	253
45.20	254	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	255	\|=(% 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	256	\|(% 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
	257
61.2	258
	259
62.7	260	ECK200.0
61.2	261
62.7	262	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	263
61.3	264	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
63.1	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" %)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
	266	\|(% 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	267	0X00
61.7	268	0X01
61.3	269	0X00
	270	0X00
61.9	271	0X05
	272	0X85
63.1	273	)))\|(% style="width:1px" %)0X1c\|(% style="width:1px" %)(((
62.1	274	(((
63.1	275	0X25
62.1	276	)))
63.1	277	)))
62.1	278
63.1	279	response:
	280
	281	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	282	\|=(% 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
	283	\|(% 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" %)(((
	284	0X80
	285	)))\|(% style="width:60px" %)0X3e(((
62.3	286
62.2	287	)))
61.3	288
63.1	289	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	290
63.1	291	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	292	\|=(% 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
	293	\|(% 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" %)(((
	294	0X00
	295	0X02
	296	0X00
	297	0X01
	298	0Xb2
	299	0Xce
	300	)))\|(% style="width:1px" %)0X3e\|(% style="width:1px" %)(((
	301	(((
	302	0X22
	303	)))
	304	)))
62.3	305
63.1	306	response:
	307
	308	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
	309	\|=(% 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
	310	\|(% 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" %)(((
	311	0X80
	312	)))\|(% style="width:60px" %)0X3e
	313
8.1	314	= 2. DR-PH01 Water PH Sensor =
	315
28.2	316	== 2.1 Specification ==
9.1	317
45.20	318
26.1	319	* Power Input: DC7~~30
45.62	320
26.1	321	* Power Consumption : < 0.5W
45.62	322
26.1	323	* Interface: RS485. 9600 Baud Rate
45.62	324
26.1	325	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	326
	327	* pH measurement error: ±0.15pH
	328
	329	* Repeatability error: ±0.02pH
	330
	331	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	332
	333	* Temperature measurement error: ±0.5°C
	334
59.1	335	* Working environment:
	336	** Ambient Temperature: 0–60°C
	337	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	338
26.1	339	* Temperature Accuracy: ±0.5 °C
45.62	340
26.1	341	* IP Rated: IP68
45.62	342
26.1	343	* Max Pressure: 0.6MPa
	344
	345	== 2.2 Wiring ==
	346
45.49	347
62.3	348	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	349
45.1	350
45.62	351	== 2.3 Mechinical Drawing ==
26.1	352
45.49	353
62.3	354	[[image:image-20240714174241-2.png]]
26.1	355
	356
	357	== 2.4 Installation Notice ==
	358
45.49	359
26.1	360	Do not power on while connect the cables. Double check the wiring before power on.
	361
	362	Installation Photo as reference:
	363
45.50	364	(% style="color:blue" %)Submerged installation:
26.1	365
	366	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.
	367
62.3	368	[[image:image-20240718191348-6.png]]
26.1	369
45.50	370	(% style="color:blue" %)Pipeline installation:
26.1	371
	372	Connect the equipment to the pipeline through the 3/4 thread.
	373
62.3	374	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
26.1	375
45.50	376	(% style="color:blue" %)Sampling:
26.1	377
	378	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.
	379
45.50	380	(% style="color:blue" %)Measure the pH of the water sample:
26.1	381
	382	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.
	383
	384
39.1	385	== 2.5 Maintenance ==
26.1	386
	387
	388	* 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	389
26.1	390	* 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	391
26.1	392	* 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	393
26.1	394	* 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	395
26.1	396	* 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	397
26.1	398	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	399
26.1	400	* 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	401
26.1	402	* 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.
	403
45.62	404	* 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.
	405
26.1	406	== 2.6 RS485 Commands ==
	407
45.51	408
27.1	409	RS485 signaldefault address 0x10
	410	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	411
45.51	412
33.2	413	=== 2.6.1 Query address ===
27.1	414
45.51	415
45.52	416	send:
27.1	417
45.52	418	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	419	\|=(% 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	420	\|(% 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
	421
45.52	422	response:
27.1	423
45.52	424	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	425	\|=(% 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	426	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	427
	428	=== 2.6.2 Change address ===
	429
45.52	430
27.1	431	For example: Change the address of the sensor with address 1 to 2, master → slave
	432
45.52	433	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	434	\|=(% 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	435	\|(% 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
	436
	437	If the sensor receives correctly, the data is returned along the original path.
	438
45.52	439	(% 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	440
45.52	441
27.1	442	=== 2.6.3 Modify intercept ===
	443
	444
45.52	445	send:
27.1	446
45.52	447	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	448	\|=(% 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	449	\|(% 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	450	0XA5
	451	)))
	452
34.4	453	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	454
45.52	455	response:
27.1	456
45.52	457	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	458	\|=(% 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	459	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	460	0X00
	461	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	462	0XA5
	463	)))
	464
	465	=== 2.6.4 Query data ===
	466
	467
34.3	468	Query the data (PH) of the sensor (address 10), host → slave
9.1	469
45.52	470	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.2	471	\|=(% 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
	472	\|(% 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	473
	474	If the sensor receives correctly, the following data will be returned, slave → host
	475
45.75	476	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	477	\|=(% 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	478	\|(% 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	479
11.1	480	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	481
11.1	482	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	483
	484	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.
	485
	486
27.1	487	=== 2.6.5 Calibration Method ===
	488
	489
	490	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	491
	492	(% style="color:blue" %)The calibration steps are as follows:
	493
27.1	494	(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.
	495
45.52	496	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	497	\|=(% 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	498	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	499	0X00
	500	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	501	0XF1
	502	)))
	503
	504	(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.
	505
45.52	506	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	507	\|=(% 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	508	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	509	0X00
	510	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	511	0X31
	512	)))
	513
	514	(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.
	515
45.52	516	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	517	\|=(% 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	518	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	519	0X00
	520	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	521	0X31
	522	)))
	523
	524	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.
	525
	526
8.1	527	= 3. DR-ORP1 Water ORP Sensor =
	528
28.2	529	== 3.1 Specification ==
27.2	530
45.75	531
27.2	532	* Power Input: DC7~~30
45.69	533
32.1	534	* Measuring range: -1999~~1999mV
45.69	535
45.70	536	* Resolution: 1mV
45.69	537
27.2	538	* Interface: RS485. 9600 Baud Rate
45.69	539
27.2	540	* Measurement error: ±3mV
45.69	541
27.2	542	* Stability: ≤2mv/24 hours
45.69	543
59.1	544	* Working environment:
	545	** Ambient Temperature: 0–60°C
	546	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	547
27.2	548	* IP Rated: IP68
45.69	549
27.2	550	* Max Pressure: 0.6MPa
	551
	552	== 3.2 Wiring ==
	553
45.75	554
62.3	555	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	556
45.1	557
27.2	558	== 3.3 Mechinical Drawing ==
	559
45.75	560
62.3	561	[[image:image-20240714174241-2.png]]
27.2	562
45.77	563
27.2	564	== 3.4 Installation Notice ==
	565
45.75	566
27.2	567	Do not power on while connect the cables. Double check the wiring before power on.
	568
45.75	569	Installation Photo as reference:
27.2	570
45.70	571	(% style="color:blue" %) Submerged installation:
27.2	572
	573	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.
	574
62.3	575	[[image:image-20240718191348-6.png]]
27.2	576
45.70	577	(% style="color:blue" %) Pipeline installation:
27.2	578
	579	Connect the equipment to the pipeline through the 3/4 thread.
	580
62.3	581	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
27.2	582
	583
39.1	584	== 3.5 Maintenance ==
8.1	585
9.1	586
29.1	587	(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	588
29.1	589	(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	590
29.1	591	(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	592
29.1	593	(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	594
29.1	595	(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	596
29.1	597	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	598
29.1	599	(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	600
29.1	601	(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	602
29.1	603	(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.
	604
45.75	605
29.1	606	== 3.6 RS485 Commands ==
	607
	608
	609	RS485 signaldefault address 0x13
	610	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	611
45.75	612
33.2	613	=== 3.6.1 Query address ===
29.1	614
	615
45.75	616	send:
	617
45.69	618	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	619	\|=(% 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	620	\|(% 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
	621
45.75	622	response:
29.1	623
45.69	624	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	625	\|=(% 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	626	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	627
	628	=== 3.6.2 Change address ===
	629
45.75	630
29.1	631	For example: Change the address of the sensor with address 1 to 2, master → slave
	632
45.71	633	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	634	\|=(% 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	635	\|(% 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
	636
	637	If the sensor receives correctly, the data is returned along the original path.
	638
45.75	639	(% 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	640
45.75	641
29.1	642	=== 3.6.3 Modify intercept ===
	643
	644
45.75	645	send:
	646
45.69	647	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	648	\|=(% 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	649	\|(% 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" %)(((
	650	0X96
	651	)))
	652
	653	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	654
45.75	655	response:
29.1	656
45.69	657	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	658	\|=(% 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	659	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	660	0X00
	661	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	662	0X96
	663	)))
	664
	665	=== 3.6.4 Query data ===
	666
9.1	667
37.1	668	Query the data (ORP) of the sensor (address 13), host → slave
35.1	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: 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	672	\|(% 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
	673
	674	If the sensor receives correctly, the following data will be returned, slave → host
	675
45.69	676	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	677	\|=(% 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	678	\|(% 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
	679
11.1	680	The query data command is 13 03 00 00 00 01 87 78
10.1	681
11.1	682	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	683
11.1	684	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	685
	686
29.1	687	=== 3.6.5 Calibration Method ===
	688
45.75	689
29.1	690	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	691	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	692	enter the following calibration command, and the 86mV point calibration is completed;
	693
45.69	694	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	695	\|=(% 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	696	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	697	0X00
	698	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	699	0X03
	700	)))
	701
	702	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.
	703
45.69	704	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	705	\|=(% 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
	706	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	707	0X00
	708	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	709	0XC3
	710	)))
	711
8.1	712	= 4. DR-DO1 Dissolved Oxygen Sensor =
	713
32.1	714	== 4.1 Specification ==
	715
33.2	716
58.1	717	* Measuring range: 0-20mg/L, 0–50℃
45.77	718
58.1	719	* Accuracy: 3%, ±0.5℃
45.77	720
58.1	721	* Resolution: 0.01 mg/L, 0.01℃
45.77	722
33.2	723	* Maximum operating pressure: 6 bar
45.77	724
33.2	725	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	726
33.2	727	* Power supply voltage: 5-24V DC
45.77	728
59.1	729	* Working environment:
	730	** Ambient Temperature: 0–60°C
	731	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	732
32.1	733	* Power consumption: ≤0.5W
	734
33.2	735	== 4.2 wiring ==
32.1	736
45.77	737
62.3	738	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	739
	740
45.77	741	== 4.3 Impedance requirements for current signals ==
33.2	742
45.77	743
46.2	744	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	745	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	746	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	747
32.1	748	== 4.4 Mechinical Drawing ==
	749
	750
62.3	751	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	752
33.2	753
39.1	754	== 4.5 Instructions for use and maintenance ==
32.1	755
45.77	756
32.1	757	* 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	758
32.1	759	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	760
	761	== 4.6 RS485 Commands ==
	762
45.77	763
34.1	764	RS485 signaldefault address 0x14
	765	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	766
45.77	767
32.3	768	=== 4.6.1 Query address ===
32.1	769
32.3	770
45.77	771	send:
	772
	773	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	774	\|=(% 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	775	\|(% 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	776
34.1	777	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	778
	779
45.77	780	response:
32.3	781
34.1	782	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	783	Register 1 data high and register 1 data low indicate the sensor version
32.3	784
45.77	785	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	786	\|=(% 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	787	\|(% 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
	788
33.2	789	=== 4.6.2 Change address ===
32.3	790
45.77	791
34.1	792	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	793
45.77	794	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	795	\|=(% 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	796	\|(% 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
	797
45.77	798	response:
32.3	799
45.77	800	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	801	\|=(% 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	802	\|(% 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	803
34.1	804	=== 4.6.3 Query data ===
9.1	805
	806
34.2	807	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	808
45.77	809	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	810	\|=(% 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	811	\|(% 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
	812
34.2	813	If the sensor receives correctly, the following data will be returned, slave → host
34.1	814
45.77	815	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	816	\|=(% 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	817	\|(% 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	818
11.1	819	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	820
	821	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
	822
11.1	823
34.2	824	Query the data (temperature) of the sensor (address 14), host → slave
	825
45.77	826	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	827	\|=(% 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	828	\|(% 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
	829
	830	If the sensor receives correctly, the following data will be returned, slave → host
	831
45.77	832	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	833	\|=(% 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	834	\|(% 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
	835
	836	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.
	837
45.77	838	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	839
	840
8.1	841	= 5. DR-TS1 Water Turbidity Sensor =
	842
45.77	843	== 5.1 Specification ==
9.1	844
10.1	845
49.1	846	* Measuring range: 0.1~~1000.0NTU
32.3	847
	848	* Accuracy: ±5%
45.77	849
32.3	850	* Resolution: 0.1NTU
45.77	851
32.3	852	* Stability: ≤3mV/24 hours
	853
54.1	854	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	855
55.1	856	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	857
59.1	858	* Working environment:
	859	** Ambient Temperature: 0–60°C
	860	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	861
	862	* Power consumption: ≤ 0.5W
	863
32.3	864	== 5.2 wiring ==
	865
45.77	866
62.3	867	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	868
45.1	869
32.3	870	== 5.3 Impedance requirements for current signals ==
	871
45.88	872
46.3	873	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	874	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	875	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	876
	877	== 5.4 Mechinical Drawing ==
	878
45.77	879
62.3	880	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
32.3	881
	882
39.1	883	== 5.5 Instructions for use and maintenance ==
32.3	884
45.77	885
32.3	886	* 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	887
32.3	888	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	889
	890	== 5.6 RS485 Commands ==
	891
	892
36.1	893	RS485 signaldefault address 0x15
	894	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	895
45.77	896
36.1	897	=== 5.6.1 Query address ===
	898
32.3	899
45.77	900	send:
	901
	902	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	903	\|=(% 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	904	\|(% 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	905
	906	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.
	907
	908
45.77	909	response:
32.3	910
45.77	911	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	912	\|=(% 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	913	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	914
36.1	915	=== 5.6.2 Change address ===
32.3	916
45.87	917
36.1	918	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	919
45.77	920	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	921	\|=(% 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	922	\|(% 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
	923
	924	If the sensor receives correctly, the data is returned along the original path.
	925
45.77	926	(% 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.
	927
45.84	928
36.1	929	=== 5.6.3 Query data ===
	930
	931
	932	Query the data (turbidity) of the sensor (address 15), host → slave
	933
45.77	934	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	935	\|=(% 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	936	\|(% 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
	937
	938	If the sensor receives correctly, the following data will be returned, slave → host
	939
45.77	940	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	941	\|=(% 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	942	\|(% 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
	943
11.1	944	The query data command is 15 03 00 00 00 01 87 1E
10.1	945
11.1	946	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	947
	948	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	949
	950
68.1	951	= 6. DR-CL Water CL Probe =
49.2	952
63.2	953	== 6.1 Specification: ==
49.2	954
63.2	955	* Power Input: DC7~~30
	956
	957	* Power Consumption : 0.19W
	958
	959	* Interface: RS485. 9600 Baud Rate
	960
	961	* CL Range & Resolution:
	962	CL2ML:**0-2mg/L
	963	CL10ML:**0-10mg/L
63.3	964	Resolution:**0.01mg/L
63.2	965
63.3	966	* CL Accuracy: ±5% FS
63.2	967	* Temperature Accuracy: ±0.5 °C
	968	* Working environment:
63.3	969	** Ambient Temperature: 0–50°C
	970	** pH:4-9
	971	** Flow rate: 30L/h~~60L/h (flow tank installation)
63.2	972	* IP Rated: IP68
	973
	974	* Max Pressure: 0.6MPa
	975
68.1	976	== 6.2 Wiring ==
63.2	977
66.1	978	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
63.2	979
68.1	980	== 6.3 Mechinical Drawing ==
66.1	981
	982	[[image:1752573238705-910.png\|\|height="694" width="278"]]
	983
67.2	984	== 6.4 Installation ==
66.1	985
67.2	986	Flow-through installation: Use the matching flow slot for installation. The device and the flow slot are installed tightly.
66.1	987
67.2	988	The measuring end is completely immersed in the measured liquid to ensure a steady flow rate without bubbles.
66.1	989
67.2	990	It is recommended that the flow rate be controlled at 30-60Lh to ensure the accuracy of the test.
	991
	992	[[image:1752573643879-991.png\|\|height="360" width="343"]]
	993
69.1	994	== 6.5 Maintenance ==
67.2	995
69.1	996	* 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!
	997	* After using the electrode, please clean the electrode head with clean water and cover it with a protective cover.
	998	* 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.
	999	* 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.
	1000	* 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.
	1001	* 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.
	1002	The electrode has a service life of about one year, and a new electrode should be replaced in time after aging.
	1003	* Before the cable plug and the device plug are locked, do not put the plug part into water.
67.2	1004
	1005
69.1	1006
	1007	== 6.6 RS485 Commands ==
	1008
	1009	RS485 signal
	1010	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	1011
	1012
69.2	1013	== 6.7 Query data ==
69.1	1014
69.2	1015	Example 1: Read the current residual chlorine concentration of the device with address 01
69.1	1016
69.2	1017	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.5	1018	\|=(% 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
	1019	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:74px" %)0X00 0X00\|(% style="width:94px" %)0X00 0X01\|(% style="width:72px" %)(((
69.3	1020	0X84
69.10	1021	)))\|(% style="width:77px" %)0X0A
69.1	1022
69.5	1023	response:
69.1	1024
69.5	1025	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.6	1026	\|=(% 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
	1027	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X03\|(% style="width:110px" %)0X02\|(% style="width:94px" %)0X03 0X16\|(% style="width:72px" %)(((
69.7	1028	0X39
69.10	1029	)))\|(% style="width:77px" %)0X7A
69.1	1030
69.8	1031	Calculation of residual chlorine concentration: 316H (hexadecimal) = 790 => residual chlorine = 7.90
69.1	1032
	1033
69.9	1034	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	1035
69.10	1036	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
69.12	1037	\|=(% 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	1038	\|(% 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	1039
69.15	1040	response:
69.1	1041
69.15	1042	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
69.17	1043	\|=(% 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	1044	\|(% style="width:99px" %)0X01\|(% style="width:83px" %)0X10\|(% style="width:110px" %)0X01 0X12\|(% style="width:94px" %)0X00 0X02\|(% style="width:72px" %)(((
	1045	0XE5
	1046	)))\|(% style="width:77px" %)0X0D
69.1	1047
	1048
	1049
66.1	1050	= 7. Water Quality Sensor Datasheet =
	1051
51.1	1052	* [[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]]

Wiki source code of Water Quality Sensors

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