Wiki source code of Water Quality Sensors

Version 60.4 by Karry Zhuang on 2025/07/15 15:33

version	line-number	content
1.1	1	Table of Contents:
	2
	3	{{toc/}}
	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
7.1	39	[[image:image-20240714173018-1.png]]
	40
	41
	42	== 1.3 Wiring ==
	43
45.2	44
55.1	45	[[image:image-20241129142314-1.png\|\|height="352" width="1108"]]
7.1	46
45.1	47
7.1	48	== 1.4 Mechinical Drawing ==
	49
45.2	50
7.1	51
60.4	52	[[image:image-20240714174241-2.png]] [[image:1752564223905-283.png\|\|height="399" width="160"]]
7.1	53
60.4	54
7.1	55	== 1.5 Installation ==
	56
	57
45.2	58	Electrode installation form:
15.2	59
45.2	60	A: Side wall installation
15.2	61
45.2	62	B: Top flange installation
15.2	63
45.2	64	C: Pipeline bend installation
15.2	65
45.2	66	D: Pipeline bend installation
15.2	67
45.2	68	E: Flow-through installation
15.2	69
45.2	70	F: Submerged installation
15.2	71
23.1	72	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	73
18.1	74	Several common installation methods of electrodes
15.2	75
18.1	76	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	77
18.1	78	A. Several common incorrect installation methods
15.2	79
23.1	80	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	81
45.2	82	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	83
23.1	84	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	85
45.2	86	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	87
	88	B. Correct installation method
	89
23.1	90	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	91
	92
38.1	93	== 1.6 Maintenance ==
7.1	94
	95
26.1	96	* 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	97
26.1	98	* 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	99
26.1	100	* 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	101
26.1	102	* 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	103
8.1	104	== 1.7 RS485 Commands ==
	105
15.2	106
	107	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	108	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	109
	110
16.1	111	=== 1.7.1 Query address ===
8.1	112
11.1	113
45.48	114	send:
45.2	115
	116	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	117	\|=(% 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	118	\|(% 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	119
	120	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.
	121
	122
45.48	123	response:
16.1	124
45.14	125	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	126	\|=(% 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	127	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	128
	129	=== 1.7.2 Change address ===
	130
45.2	131
16.1	132	For example: Change the address of the sensor with address 1 to 2, master → slave
	133
45.20	134	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	135	\|=(% 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	136	\|(% 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	137
	138	If the sensor receives correctly, the data is returned along the original path.
	139
45.32	140	(% 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	141
45.32	142
16.1	143	=== 1.7.3 Modify intercept ===
	144
	145
45.48	146	send:
16.1	147
45.36	148	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	149	\|=(% 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
	150	\|(% 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	151	0X07
16.1	152	)))
	153
	154	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	155
45.48	156	response:
16.1	157
45.36	158	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	159	\|=(% 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	160	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	161	0X02
27.1	162	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	163	0X8F
16.1	164	)))
	165
	166	=== 1.7.4 Query data ===
	167
37.1	168
	169	Query the data (EC,temperature) of the sensor (address 11), host → slave
	170
45.20	171	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	172	\|=(% 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	173	\|(% 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
	174
	175	If the sensor receives correctly, the following data will be returned, slave → host
	176
45.20	177	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	178	\|=(% 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	179	\|(% 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
	180
16.3	181	The address of the EC K10 sensor is 11
16.1	182
10.1	183	The query data command is 11 03 00 00 00 02 C6 9B
	184
45.48	185	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	186
	187
37.1	188	Query the data (EC,temperature) of the sensor (address 11), host → slave
	189
45.20	190	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	191	\|=(% 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	192	\|(% 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
	193
	194	If the sensor receives correctly, the following data will be returned, slave → host
	195
45.20	196	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	197	\|=(% 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	198	\|(% 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
	199
10.1	200	The address of the EC K1 sensor is 12
	201
	202	The query data command is 12 03 00 00 00 02 C6 A8
	203
45.48	204	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	205
11.1	206
16.2	207	=== 1.7.5 Calibration Method ===
12.1	208
	209
15.1	210	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	211
45.63	212	(% style="color:blue" %)The calibration steps are as follows:
	213
15.1	214	(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.
	215
45.20	216	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	217	\|=(% 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	218	\|(% 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" %)(((
	219	0X00
	220	0X00
	221	0X37
	222	0X32
	223	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	224
15.1	225	1413*10 gives 0X00003732
14.1	226
45.48	227	response:
15.1	228
45.20	229	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	230	\|=(% 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	231	\|(% 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
	232
	233	(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
	234
45.20	235	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	236	\|=(% 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	237	\|(% 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" %)(((
	238	0X00
	239	0X01
	240	0XF7
	241	0X20
	242	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	243
15.1	244	12880*10 gives 0X01F720
	245
45.48	246	response:
14.1	247
45.20	248	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	249	\|=(% 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	250	\|(% 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
	251
8.1	252	= 2. DR-PH01 Water PH Sensor =
	253
28.2	254	== 2.1 Specification ==
9.1	255
45.20	256
26.1	257	* Power Input: DC7~~30
45.62	258
26.1	259	* Power Consumption : < 0.5W
45.62	260
26.1	261	* Interface: RS485. 9600 Baud Rate
45.62	262
26.1	263	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	264
	265	* pH measurement error: ±0.15pH
	266
	267	* Repeatability error: ±0.02pH
	268
	269	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	270
	271	* Temperature measurement error: ±0.5°C
	272
59.1	273	* Working environment:
	274	** Ambient Temperature: 0–60°C
	275	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	276
26.1	277	* Temperature Accuracy: ±0.5 °C
45.62	278
26.1	279	* IP Rated: IP68
45.62	280
26.1	281	* Max Pressure: 0.6MPa
	282
	283	== 2.2 Wiring ==
	284
45.49	285
45.1	286	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	287
45.1	288
45.62	289	== 2.3 Mechinical Drawing ==
26.1	290
45.49	291
26.1	292	[[image:image-20240714174241-2.png]]
	293
	294
	295	== 2.4 Installation Notice ==
	296
45.49	297
26.1	298	Do not power on while connect the cables. Double check the wiring before power on.
	299
	300	Installation Photo as reference:
	301
45.50	302	(% style="color:blue" %)Submerged installation:
26.1	303
	304	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.
	305
	306	[[image:image-20240718191348-6.png]]
	307
45.50	308	(% style="color:blue" %)Pipeline installation:
26.1	309
	310	Connect the equipment to the pipeline through the 3/4 thread.
	311
	312	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	313
45.50	314	(% style="color:blue" %)Sampling:
26.1	315
	316	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.
	317
45.50	318	(% style="color:blue" %)Measure the pH of the water sample:
26.1	319
	320	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.
	321
	322
39.1	323	== 2.5 Maintenance ==
26.1	324
	325
	326	* 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	327
26.1	328	* 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	329
26.1	330	* 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	331
26.1	332	* 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	333
26.1	334	* 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	335
26.1	336	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	337
26.1	338	* 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	339
26.1	340	* 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.
	341
45.62	342	* 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.
	343
26.1	344	== 2.6 RS485 Commands ==
	345
45.51	346
27.1	347	RS485 signaldefault address 0x10
	348	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	349
45.51	350
33.2	351	=== 2.6.1 Query address ===
27.1	352
45.51	353
45.52	354	send:
27.1	355
45.52	356	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	357	\|=(% 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	358	\|(% 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
	359
45.52	360	response:
27.1	361
45.52	362	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	363	\|=(% 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	364	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	365
	366	=== 2.6.2 Change address ===
	367
45.52	368
27.1	369	For example: Change the address of the sensor with address 1 to 2, master → slave
	370
45.52	371	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	372	\|=(% 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	373	\|(% 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
	374
	375	If the sensor receives correctly, the data is returned along the original path.
	376
45.52	377	(% 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	378
45.52	379
27.1	380	=== 2.6.3 Modify intercept ===
	381
	382
45.52	383	send:
27.1	384
45.52	385	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	386	\|=(% 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	387	\|(% 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	388	0XA5
	389	)))
	390
34.4	391	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	392
45.52	393	response:
27.1	394
45.52	395	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	396	\|=(% 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	397	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	398	0X00
	399	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	400	0XA5
	401	)))
	402
	403	=== 2.6.4 Query data ===
	404
	405
34.3	406	Query the data (PH) of the sensor (address 10), host → slave
9.1	407
45.52	408	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.59	409	\|=(% 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
34.3	410	\|(% style="width:99px" %)0X10\|(% 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" %)0X4B
	411
	412	If the sensor receives correctly, the following data will be returned, slave → host
	413
45.75	414	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	415	\|=(% 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	416	\|(% 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	417
11.1	418	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	419
11.1	420	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	421
	422	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.
	423
	424
27.1	425	=== 2.6.5 Calibration Method ===
	426
	427
	428	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	429
	430	(% style="color:blue" %)The calibration steps are as follows:
	431
27.1	432	(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.
	433
45.52	434	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	435	\|=(% 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	436	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	437	0X00
	438	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	439	0XF1
	440	)))
	441
	442	(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.
	443
45.52	444	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	445	\|=(% 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	446	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	447	0X00
	448	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	449	0X31
	450	)))
	451
	452	(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.
	453
45.52	454	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	455	\|=(% 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	456	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	457	0X00
	458	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	459	0X31
	460	)))
	461
	462	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.
	463
	464
8.1	465	= 3. DR-ORP1 Water ORP Sensor =
	466
28.2	467	== 3.1 Specification ==
27.2	468
45.75	469
27.2	470	* Power Input: DC7~~30
45.69	471
32.1	472	* Measuring range: -1999~~1999mV
45.69	473
45.70	474	* Resolution: 1mV
45.69	475
27.2	476	* Interface: RS485. 9600 Baud Rate
45.69	477
27.2	478	* Measurement error: ±3mV
45.69	479
27.2	480	* Stability: ≤2mv/24 hours
45.69	481
59.1	482	* Working environment:
	483	** Ambient Temperature: 0–60°C
	484	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	485
27.2	486	* IP Rated: IP68
45.69	487
27.2	488	* Max Pressure: 0.6MPa
	489
	490	== 3.2 Wiring ==
	491
45.75	492
45.1	493	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	494
45.1	495
27.2	496	== 3.3 Mechinical Drawing ==
	497
45.75	498
27.2	499	[[image:image-20240714174241-2.png]]
	500
45.77	501
27.2	502	== 3.4 Installation Notice ==
	503
45.75	504
27.2	505	Do not power on while connect the cables. Double check the wiring before power on.
	506
45.75	507	Installation Photo as reference:
27.2	508
45.70	509	(% style="color:blue" %) Submerged installation:
27.2	510
	511	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.
	512
	513	[[image:image-20240718191348-6.png]]
	514
45.70	515	(% style="color:blue" %) Pipeline installation:
27.2	516
	517	Connect the equipment to the pipeline through the 3/4 thread.
	518
	519	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	520
	521
39.1	522	== 3.5 Maintenance ==
8.1	523
9.1	524
29.1	525	(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	526
29.1	527	(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	528
29.1	529	(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	530
29.1	531	(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	532
29.1	533	(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	534
29.1	535	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	536
29.1	537	(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	538
29.1	539	(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	540
29.1	541	(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.
	542
45.75	543
29.1	544	== 3.6 RS485 Commands ==
	545
	546
	547	RS485 signaldefault address 0x13
	548	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	549
45.75	550
33.2	551	=== 3.6.1 Query address ===
29.1	552
	553
45.75	554	send:
	555
45.69	556	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	557	\|=(% 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	558	\|(% 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
	559
45.75	560	response:
29.1	561
45.69	562	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	563	\|=(% 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	564	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	565
	566	=== 3.6.2 Change address ===
	567
45.75	568
29.1	569	For example: Change the address of the sensor with address 1 to 2, master → slave
	570
45.71	571	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	572	\|=(% 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	573	\|(% 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
	574
	575	If the sensor receives correctly, the data is returned along the original path.
	576
45.75	577	(% 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	578
45.75	579
29.1	580	=== 3.6.3 Modify intercept ===
	581
	582
45.75	583	send:
	584
45.69	585	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	586	\|=(% 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	587	\|(% 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" %)(((
	588	0X96
	589	)))
	590
	591	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	592
45.75	593	response:
29.1	594
45.69	595	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	596	\|=(% 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	597	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	598	0X00
	599	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	600	0X96
	601	)))
	602
	603	=== 3.6.4 Query data ===
	604
9.1	605
37.1	606	Query the data (ORP) of the sensor (address 13), host → slave
35.1	607
45.69	608	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	609	\|=(% 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	610	\|(% 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
	611
	612	If the sensor receives correctly, the following data will be returned, slave → host
	613
45.69	614	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	615	\|=(% 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	616	\|(% 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
	617
11.1	618	The query data command is 13 03 00 00 00 01 87 78
10.1	619
11.1	620	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	621
11.1	622	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	623
	624
29.1	625	=== 3.6.5 Calibration Method ===
	626
45.75	627
29.1	628	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	629	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	630	enter the following calibration command, and the 86mV point calibration is completed;
	631
45.69	632	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	633	\|=(% 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	634	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	635	0X00
	636	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	637	0X03
	638	)))
	639
	640	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.
	641
45.69	642	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	643	\|=(% 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
	644	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	645	0X00
	646	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	647	0XC3
	648	)))
	649
8.1	650	= 4. DR-DO1 Dissolved Oxygen Sensor =
	651
32.1	652	== 4.1 Specification ==
	653
33.2	654
58.1	655	* Measuring range: 0-20mg/L, 0–50℃
45.77	656
58.1	657	* Accuracy: 3%, ±0.5℃
45.77	658
58.1	659	* Resolution: 0.01 mg/L, 0.01℃
45.77	660
33.2	661	* Maximum operating pressure: 6 bar
45.77	662
33.2	663	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	664
33.2	665	* Power supply voltage: 5-24V DC
45.77	666
59.1	667	* Working environment:
	668	** Ambient Temperature: 0–60°C
	669	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	670
32.1	671	* Power consumption: ≤0.5W
	672
33.2	673	== 4.2 wiring ==
32.1	674
45.77	675
45.1	676	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	677
	678
45.77	679	== 4.3 Impedance requirements for current signals ==
33.2	680
45.77	681
46.2	682	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	683	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	684	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	685
32.1	686	== 4.4 Mechinical Drawing ==
	687
	688
33.2	689	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	690
33.2	691
39.1	692	== 4.5 Instructions for use and maintenance ==
32.1	693
45.77	694
32.1	695	* 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	696
32.1	697	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	698
	699	== 4.6 RS485 Commands ==
	700
45.77	701
34.1	702	RS485 signaldefault address 0x14
	703	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	704
45.77	705
32.3	706	=== 4.6.1 Query address ===
32.1	707
32.3	708
45.77	709	send:
	710
	711	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	712	\|=(% 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	713	\|(% 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	714
34.1	715	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	716
	717
45.77	718	response:
32.3	719
34.1	720	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	721	Register 1 data high and register 1 data low indicate the sensor version
32.3	722
45.77	723	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	724	\|=(% 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	725	\|(% 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
	726
33.2	727	=== 4.6.2 Change address ===
32.3	728
45.77	729
34.1	730	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	731
45.77	732	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	733	\|=(% 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	734	\|(% 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
	735
45.77	736	response:
32.3	737
45.77	738	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	739	\|=(% 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	740	\|(% 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	741
34.1	742	=== 4.6.3 Query data ===
9.1	743
	744
34.2	745	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	746
45.77	747	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	748	\|=(% 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	749	\|(% 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
	750
34.2	751	If the sensor receives correctly, the following data will be returned, slave → host
34.1	752
45.77	753	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	754	\|=(% 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	755	\|(% 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	756
11.1	757	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	758
	759	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
	760
11.1	761
34.2	762	Query the data (temperature) of the sensor (address 14), host → slave
	763
45.77	764	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	765	\|=(% 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	766	\|(% 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
	767
	768	If the sensor receives correctly, the following data will be returned, slave → host
	769
45.77	770	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	771	\|=(% 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	772	\|(% 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
	773
	774	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.
	775
45.77	776	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	777
	778
8.1	779	= 5. DR-TS1 Water Turbidity Sensor =
	780
45.77	781	== 5.1 Specification ==
9.1	782
10.1	783
49.1	784	* Measuring range: 0.1~~1000.0NTU
32.3	785
	786	* Accuracy: ±5%
45.77	787
32.3	788	* Resolution: 0.1NTU
45.77	789
32.3	790	* Stability: ≤3mV/24 hours
	791
54.1	792	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	793
55.1	794	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	795
59.1	796	* Working environment:
	797	** Ambient Temperature: 0–60°C
	798	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	799
	800	* Power consumption: ≤ 0.5W
	801
32.3	802	== 5.2 wiring ==
	803
45.77	804
45.1	805	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	806
45.1	807
32.3	808	== 5.3 Impedance requirements for current signals ==
	809
45.88	810
46.3	811	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	812	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	813	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	814
	815	== 5.4 Mechinical Drawing ==
	816
45.77	817
32.3	818	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
	819
	820
39.1	821	== 5.5 Instructions for use and maintenance ==
32.3	822
45.77	823
32.3	824	* 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	825
32.3	826	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	827
	828	== 5.6 RS485 Commands ==
	829
	830
36.1	831	RS485 signaldefault address 0x15
	832	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	833
45.77	834
36.1	835	=== 5.6.1 Query address ===
	836
32.3	837
45.77	838	send:
	839
	840	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	841	\|=(% 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	842	\|(% 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	843
	844	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.
	845
	846
45.77	847	response:
32.3	848
45.77	849	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	850	\|=(% 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	851	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	852
36.1	853	=== 5.6.2 Change address ===
32.3	854
45.87	855
36.1	856	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	857
45.77	858	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	859	\|=(% 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	860	\|(% 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
	861
	862	If the sensor receives correctly, the data is returned along the original path.
	863
45.77	864	(% 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.
	865
45.84	866
36.1	867	=== 5.6.3 Query data ===
	868
	869
	870	Query the data (turbidity) of the sensor (address 15), host → slave
	871
45.77	872	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	873	\|=(% 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	874	\|(% 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
	875
	876	If the sensor receives correctly, the following data will be returned, slave → host
	877
45.77	878	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	879	\|=(% 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	880	\|(% 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
	881
11.1	882	The query data command is 15 03 00 00 00 01 87 1E
10.1	883
11.1	884	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	885
	886	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	887
	888
	889	= 6. Water Quality Sensor Datasheet =
	890
	891
51.1	892	* [[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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