Wiki source code of Water Quality Sensors

Version 60.1 by Karry Zhuang on 2025/07/15 15:23

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)
59.3	31	** ECK200.0
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	[[image:image-20240714174241-2.png]]
	52
	53
	54	== 1.5 Installation ==
	55
	56
45.2	57	Electrode installation form:
15.2	58
45.2	59	A: Side wall installation
15.2	60
45.2	61	B: Top flange installation
15.2	62
45.2	63	C: Pipeline bend installation
15.2	64
45.2	65	D: Pipeline bend installation
15.2	66
45.2	67	E: Flow-through installation
15.2	68
45.2	69	F: Submerged installation
15.2	70
23.1	71	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	72
18.1	73	Several common installation methods of electrodes
15.2	74
18.1	75	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	76
18.1	77	A. Several common incorrect installation methods
15.2	78
23.1	79	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	80
45.2	81	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	82
23.1	83	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	84
45.2	85	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	86
	87	B. Correct installation method
	88
23.1	89	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	90
	91
38.1	92	== 1.6 Maintenance ==
7.1	93
	94
26.1	95	* 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	96
26.1	97	* 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	98
26.1	99	* 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	100
26.1	101	* 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	102
8.1	103	== 1.7 RS485 Commands ==
	104
15.2	105
	106	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	107	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	108
	109
16.1	110	=== 1.7.1 Query address ===
8.1	111
11.1	112
45.48	113	send:
45.2	114
	115	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	116	\|=(% 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	117	\|(% 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	118
	119	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.
	120
	121
45.48	122	response:
16.1	123
45.14	124	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	125	\|=(% 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	126	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	127
	128	=== 1.7.2 Change address ===
	129
45.2	130
16.1	131	For example: Change the address of the sensor with address 1 to 2, master → slave
	132
45.20	133	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	134	\|=(% 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	135	\|(% 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	136
	137	If the sensor receives correctly, the data is returned along the original path.
	138
45.32	139	(% 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	140
45.32	141
16.1	142	=== 1.7.3 Modify intercept ===
	143
	144
45.48	145	send:
16.1	146
45.36	147	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	148	\|=(% 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
	149	\|(% 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	150	0X07
16.1	151	)))
	152
	153	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	154
45.48	155	response:
16.1	156
45.36	157	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	158	\|=(% 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	159	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	160	0X02
27.1	161	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	162	0X8F
16.1	163	)))
	164
	165	=== 1.7.4 Query data ===
	166
37.1	167
	168	Query the data (EC,temperature) of the sensor (address 11), host → slave
	169
45.20	170	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	171	\|=(% 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	172	\|(% 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
	173
	174	If the sensor receives correctly, the following data will be returned, slave → host
	175
45.20	176	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	177	\|=(% 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	178	\|(% 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
	179
16.3	180	The address of the EC K10 sensor is 11
16.1	181
10.1	182	The query data command is 11 03 00 00 00 02 C6 9B
	183
45.48	184	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	185
	186
37.1	187	Query the data (EC,temperature) of the sensor (address 11), host → slave
	188
45.20	189	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	190	\|=(% 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	191	\|(% 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
	192
	193	If the sensor receives correctly, the following data will be returned, slave → host
	194
45.20	195	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	196	\|=(% 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	197	\|(% 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
	198
10.1	199	The address of the EC K1 sensor is 12
	200
	201	The query data command is 12 03 00 00 00 02 C6 A8
	202
45.48	203	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	204
11.1	205
16.2	206	=== 1.7.5 Calibration Method ===
12.1	207
	208
15.1	209	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	210
45.63	211	(% style="color:blue" %)The calibration steps are as follows:
	212
15.1	213	(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.
	214
45.20	215	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	216	\|=(% 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	217	\|(% 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" %)(((
	218	0X00
	219	0X00
	220	0X37
	221	0X32
	222	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	223
15.1	224	1413*10 gives 0X00003732
14.1	225
45.48	226	response:
15.1	227
45.20	228	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	229	\|=(% 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	230	\|(% 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
	231
	232	(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
	233
45.20	234	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	235	\|=(% 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	236	\|(% 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" %)(((
	237	0X00
	238	0X01
	239	0XF7
	240	0X20
	241	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	242
15.1	243	12880*10 gives 0X01F720
	244
45.48	245	response:
14.1	246
45.20	247	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	248	\|=(% 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	249	\|(% 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
	250
8.1	251	= 2. DR-PH01 Water PH Sensor =
	252
28.2	253	== 2.1 Specification ==
9.1	254
45.20	255
26.1	256	* Power Input: DC7~~30
45.62	257
26.1	258	* Power Consumption : < 0.5W
45.62	259
26.1	260	* Interface: RS485. 9600 Baud Rate
45.62	261
26.1	262	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	263
	264	* pH measurement error: ±0.15pH
	265
	266	* Repeatability error: ±0.02pH
	267
	268	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	269
	270	* Temperature measurement error: ±0.5°C
	271
59.1	272	* Working environment:
	273	** Ambient Temperature: 0–60°C
	274	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	275
26.1	276	* Temperature Accuracy: ±0.5 °C
45.62	277
26.1	278	* IP Rated: IP68
45.62	279
26.1	280	* Max Pressure: 0.6MPa
	281
	282	== 2.2 Wiring ==
	283
45.49	284
45.1	285	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	286
45.1	287
45.62	288	== 2.3 Mechinical Drawing ==
26.1	289
45.49	290
26.1	291	[[image:image-20240714174241-2.png]]
	292
	293
	294	== 2.4 Installation Notice ==
	295
45.49	296
26.1	297	Do not power on while connect the cables. Double check the wiring before power on.
	298
	299	Installation Photo as reference:
	300
45.50	301	(% style="color:blue" %)Submerged installation:
26.1	302
	303	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.
	304
	305	[[image:image-20240718191348-6.png]]
	306
45.50	307	(% style="color:blue" %)Pipeline installation:
26.1	308
	309	Connect the equipment to the pipeline through the 3/4 thread.
	310
	311	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	312
45.50	313	(% style="color:blue" %)Sampling:
26.1	314
	315	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.
	316
45.50	317	(% style="color:blue" %)Measure the pH of the water sample:
26.1	318
	319	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.
	320
	321
39.1	322	== 2.5 Maintenance ==
26.1	323
	324
	325	* 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	326
26.1	327	* 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	328
26.1	329	* 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	330
26.1	331	* 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	332
26.1	333	* 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	334
26.1	335	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	336
26.1	337	* 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	338
26.1	339	* 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.
	340
45.62	341	* 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.
	342
26.1	343	== 2.6 RS485 Commands ==
	344
45.51	345
27.1	346	RS485 signaldefault address 0x10
	347	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	348
45.51	349
33.2	350	=== 2.6.1 Query address ===
27.1	351
45.51	352
45.52	353	send:
27.1	354
45.52	355	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	356	\|=(% 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	357	\|(% 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
	358
45.52	359	response:
27.1	360
45.52	361	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	362	\|=(% 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	363	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	364
	365	=== 2.6.2 Change address ===
	366
45.52	367
27.1	368	For example: Change the address of the sensor with address 1 to 2, master → slave
	369
45.52	370	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	371	\|=(% 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	372	\|(% 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
	373
	374	If the sensor receives correctly, the data is returned along the original path.
	375
45.52	376	(% 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	377
45.52	378
27.1	379	=== 2.6.3 Modify intercept ===
	380
	381
45.52	382	send:
27.1	383
45.52	384	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	385	\|=(% 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	386	\|(% 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	387	0XA5
	388	)))
	389
34.4	390	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	391
45.52	392	response:
27.1	393
45.52	394	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	395	\|=(% 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	396	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	397	0X00
	398	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	399	0XA5
	400	)))
	401
	402	=== 2.6.4 Query data ===
	403
	404
34.3	405	Query the data (PH) of the sensor (address 10), host → slave
9.1	406
45.52	407	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.59	408	\|=(% 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	409	\|(% 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
	410
	411	If the sensor receives correctly, the following data will be returned, slave → host
	412
45.75	413	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	414	\|=(% 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	415	\|(% 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	416
11.1	417	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	418
11.1	419	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	420
	421	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.
	422
	423
27.1	424	=== 2.6.5 Calibration Method ===
	425
	426
	427	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	428
	429	(% style="color:blue" %)The calibration steps are as follows:
	430
27.1	431	(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.
	432
45.52	433	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	434	\|=(% 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	435	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	436	0X00
	437	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	438	0XF1
	439	)))
	440
	441	(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.
	442
45.52	443	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	444	\|=(% 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	445	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	446	0X00
	447	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	448	0X31
	449	)))
	450
	451	(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.
	452
45.52	453	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	454	\|=(% 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	455	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	456	0X00
	457	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	458	0X31
	459	)))
	460
	461	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.
	462
	463
8.1	464	= 3. DR-ORP1 Water ORP Sensor =
	465
28.2	466	== 3.1 Specification ==
27.2	467
45.75	468
27.2	469	* Power Input: DC7~~30
45.69	470
32.1	471	* Measuring range: -1999~~1999mV
45.69	472
45.70	473	* Resolution: 1mV
45.69	474
27.2	475	* Interface: RS485. 9600 Baud Rate
45.69	476
27.2	477	* Measurement error: ±3mV
45.69	478
27.2	479	* Stability: ≤2mv/24 hours
45.69	480
59.1	481	* Working environment:
	482	** Ambient Temperature: 0–60°C
	483	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	484
27.2	485	* IP Rated: IP68
45.69	486
27.2	487	* Max Pressure: 0.6MPa
	488
	489	== 3.2 Wiring ==
	490
45.75	491
45.1	492	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	493
45.1	494
27.2	495	== 3.3 Mechinical Drawing ==
	496
45.75	497
27.2	498	[[image:image-20240714174241-2.png]]
	499
45.77	500
27.2	501	== 3.4 Installation Notice ==
	502
45.75	503
27.2	504	Do not power on while connect the cables. Double check the wiring before power on.
	505
45.75	506	Installation Photo as reference:
27.2	507
45.70	508	(% style="color:blue" %) Submerged installation:
27.2	509
	510	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.
	511
	512	[[image:image-20240718191348-6.png]]
	513
45.70	514	(% style="color:blue" %) Pipeline installation:
27.2	515
	516	Connect the equipment to the pipeline through the 3/4 thread.
	517
	518	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	519
	520
39.1	521	== 3.5 Maintenance ==
8.1	522
9.1	523
29.1	524	(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	525
29.1	526	(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	527
29.1	528	(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	529
29.1	530	(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	531
29.1	532	(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	533
29.1	534	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	535
29.1	536	(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	537
29.1	538	(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	539
29.1	540	(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.
	541
45.75	542
29.1	543	== 3.6 RS485 Commands ==
	544
	545
	546	RS485 signaldefault address 0x13
	547	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	548
45.75	549
33.2	550	=== 3.6.1 Query address ===
29.1	551
	552
45.75	553	send:
	554
45.69	555	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	556	\|=(% 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	557	\|(% 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
	558
45.75	559	response:
29.1	560
45.69	561	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	562	\|=(% 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	563	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	564
	565	=== 3.6.2 Change address ===
	566
45.75	567
29.1	568	For example: Change the address of the sensor with address 1 to 2, master → slave
	569
45.71	570	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	571	\|=(% 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	572	\|(% 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
	573
	574	If the sensor receives correctly, the data is returned along the original path.
	575
45.75	576	(% 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	577
45.75	578
29.1	579	=== 3.6.3 Modify intercept ===
	580
	581
45.75	582	send:
	583
45.69	584	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	585	\|=(% 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	586	\|(% 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" %)(((
	587	0X96
	588	)))
	589
	590	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	591
45.75	592	response:
29.1	593
45.69	594	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	595	\|=(% 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	596	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	597	0X00
	598	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	599	0X96
	600	)))
	601
	602	=== 3.6.4 Query data ===
	603
9.1	604
37.1	605	Query the data (ORP) of the sensor (address 13), host → slave
35.1	606
45.69	607	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	608	\|=(% 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	609	\|(% 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
	610
	611	If the sensor receives correctly, the following data will be returned, slave → host
	612
45.69	613	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	614	\|=(% 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	615	\|(% 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
	616
11.1	617	The query data command is 13 03 00 00 00 01 87 78
10.1	618
11.1	619	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	620
11.1	621	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	622
	623
29.1	624	=== 3.6.5 Calibration Method ===
	625
45.75	626
29.1	627	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	628	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	629	enter the following calibration command, and the 86mV point calibration is completed;
	630
45.69	631	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	632	\|=(% 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	633	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	634	0X00
	635	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	636	0X03
	637	)))
	638
	639	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.
	640
45.69	641	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	642	\|=(% 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
	643	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	644	0X00
	645	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	646	0XC3
	647	)))
	648
8.1	649	= 4. DR-DO1 Dissolved Oxygen Sensor =
	650
32.1	651	== 4.1 Specification ==
	652
33.2	653
58.1	654	* Measuring range: 0-20mg/L, 0–50℃
45.77	655
58.1	656	* Accuracy: 3%, ±0.5℃
45.77	657
58.1	658	* Resolution: 0.01 mg/L, 0.01℃
45.77	659
33.2	660	* Maximum operating pressure: 6 bar
45.77	661
33.2	662	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	663
33.2	664	* Power supply voltage: 5-24V DC
45.77	665
59.1	666	* Working environment:
	667	** Ambient Temperature: 0–60°C
	668	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	669
32.1	670	* Power consumption: ≤0.5W
	671
33.2	672	== 4.2 wiring ==
32.1	673
45.77	674
45.1	675	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	676
	677
45.77	678	== 4.3 Impedance requirements for current signals ==
33.2	679
45.77	680
46.2	681	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	682	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	683	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	684
32.1	685	== 4.4 Mechinical Drawing ==
	686
	687
33.2	688	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	689
33.2	690
39.1	691	== 4.5 Instructions for use and maintenance ==
32.1	692
45.77	693
32.1	694	* 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	695
32.1	696	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	697
	698	== 4.6 RS485 Commands ==
	699
45.77	700
34.1	701	RS485 signaldefault address 0x14
	702	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	703
45.77	704
32.3	705	=== 4.6.1 Query address ===
32.1	706
32.3	707
45.77	708	send:
	709
	710	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	711	\|=(% 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	712	\|(% 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	713
34.1	714	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	715
	716
45.77	717	response:
32.3	718
34.1	719	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	720	Register 1 data high and register 1 data low indicate the sensor version
32.3	721
45.77	722	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	723	\|=(% 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	724	\|(% 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
	725
33.2	726	=== 4.6.2 Change address ===
32.3	727
45.77	728
34.1	729	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	730
45.77	731	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	732	\|=(% 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	733	\|(% 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
	734
45.77	735	response:
32.3	736
45.77	737	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	738	\|=(% 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	739	\|(% 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	740
34.1	741	=== 4.6.3 Query data ===
9.1	742
	743
34.2	744	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	745
45.77	746	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	747	\|=(% 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	748	\|(% 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
	749
34.2	750	If the sensor receives correctly, the following data will be returned, slave → host
34.1	751
45.77	752	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	753	\|=(% 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	754	\|(% 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	755
11.1	756	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	757
	758	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
	759
11.1	760
34.2	761	Query the data (temperature) of the sensor (address 14), host → slave
	762
45.77	763	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	764	\|=(% 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	765	\|(% 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
	766
	767	If the sensor receives correctly, the following data will be returned, slave → host
	768
45.77	769	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	770	\|=(% 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	771	\|(% 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
	772
	773	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.
	774
45.77	775	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	776
	777
8.1	778	= 5. DR-TS1 Water Turbidity Sensor =
	779
45.77	780	== 5.1 Specification ==
9.1	781
10.1	782
49.1	783	* Measuring range: 0.1~~1000.0NTU
32.3	784
	785	* Accuracy: ±5%
45.77	786
32.3	787	* Resolution: 0.1NTU
45.77	788
32.3	789	* Stability: ≤3mV/24 hours
	790
54.1	791	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	792
55.1	793	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	794
59.1	795	* Working environment:
	796	** Ambient Temperature: 0–60°C
	797	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	798
	799	* Power consumption: ≤ 0.5W
	800
32.3	801	== 5.2 wiring ==
	802
45.77	803
45.1	804	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	805
45.1	806
32.3	807	== 5.3 Impedance requirements for current signals ==
	808
45.88	809
46.3	810	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	811	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	812	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	813
	814	== 5.4 Mechinical Drawing ==
	815
45.77	816
32.3	817	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
	818
	819
39.1	820	== 5.5 Instructions for use and maintenance ==
32.3	821
45.77	822
32.3	823	* 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	824
32.3	825	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	826
	827	== 5.6 RS485 Commands ==
	828
	829
36.1	830	RS485 signaldefault address 0x15
	831	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	832
45.77	833
36.1	834	=== 5.6.1 Query address ===
	835
32.3	836
45.77	837	send:
	838
	839	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	840	\|=(% 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	841	\|(% 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	842
	843	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.
	844
	845
45.77	846	response:
32.3	847
45.77	848	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	849	\|=(% 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	850	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	851
36.1	852	=== 5.6.2 Change address ===
32.3	853
45.87	854
36.1	855	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	856
45.77	857	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	858	\|=(% 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	859	\|(% 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
	860
	861	If the sensor receives correctly, the data is returned along the original path.
	862
45.77	863	(% 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.
	864
45.84	865
36.1	866	=== 5.6.3 Query data ===
	867
	868
	869	Query the data (turbidity) of the sensor (address 15), host → slave
	870
45.77	871	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	872	\|=(% 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	873	\|(% 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
	874
	875	If the sensor receives correctly, the following data will be returned, slave → host
	876
45.77	877	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	878	\|=(% 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	879	\|(% 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
	880
11.1	881	The query data command is 15 03 00 00 00 01 87 1E
10.1	882
11.1	883	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	884
	885	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	886
	887
	888	= 6. Water Quality Sensor Datasheet =
	889
	890
51.1	891	* [[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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