Wiki source code of Water Quality Sensors

Version 59.2 by Karry Zhuang on 2025/07/15 14:48

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)
7.1	31	* IP Rated: IP68
45.63	32
7.1	33	* Max Pressure: 0.6MPa
	34
	35	== 1.2 Application for Different Range ==
	36
45.2	37
7.1	38	[[image:image-20240714173018-1.png]]
	39
	40
	41	== 1.3 Wiring ==
	42
45.2	43
55.1	44	[[image:image-20241129142314-1.png\|\|height="352" width="1108"]]
7.1	45
45.1	46
7.1	47	== 1.4 Mechinical Drawing ==
	48
45.2	49
7.1	50	[[image:image-20240714174241-2.png]]
	51
	52
	53	== 1.5 Installation ==
	54
	55
45.2	56	Electrode installation form:
15.2	57
45.2	58	A: Side wall installation
15.2	59
45.2	60	B: Top flange installation
15.2	61
45.2	62	C: Pipeline bend installation
15.2	63
45.2	64	D: Pipeline bend installation
15.2	65
45.2	66	E: Flow-through installation
15.2	67
45.2	68	F: Submerged installation
15.2	69
23.1	70	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	71
18.1	72	Several common installation methods of electrodes
15.2	73
18.1	74	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	75
18.1	76	A. Several common incorrect installation methods
15.2	77
23.1	78	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	79
45.2	80	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	81
23.1	82	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	83
45.2	84	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	85
	86	B. Correct installation method
	87
23.1	88	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	89
	90
38.1	91	== 1.6 Maintenance ==
7.1	92
	93
26.1	94	* 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	95
26.1	96	* 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	97
26.1	98	* 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	99
26.1	100	* 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	101
8.1	102	== 1.7 RS485 Commands ==
	103
15.2	104
	105	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	106	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	107
	108
16.1	109	=== 1.7.1 Query address ===
8.1	110
11.1	111
45.48	112	send:
45.2	113
	114	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	115	\|=(% 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	116	\|(% 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	117
	118	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.
	119
	120
45.48	121	response:
16.1	122
45.14	123	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	124	\|=(% 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	125	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	126
	127	=== 1.7.2 Change address ===
	128
45.2	129
16.1	130	For example: Change the address of the sensor with address 1 to 2, master → slave
	131
45.20	132	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	133	\|=(% 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	134	\|(% 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	135
	136	If the sensor receives correctly, the data is returned along the original path.
	137
45.32	138	(% 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	139
45.32	140
16.1	141	=== 1.7.3 Modify intercept ===
	142
	143
45.48	144	send:
16.1	145
45.36	146	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	147	\|=(% 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
	148	\|(% 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	149	0X07
16.1	150	)))
	151
	152	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	153
45.48	154	response:
16.1	155
45.36	156	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	157	\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
16.1	158	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	159	0X02
27.1	160	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	161	0X8F
16.1	162	)))
	163
	164	=== 1.7.4 Query data ===
	165
37.1	166
	167	Query the data (EC,temperature) of the sensor (address 11), host → slave
	168
45.20	169	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	170	\|=(% 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	171	\|(% 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
	172
	173	If the sensor receives correctly, the following data will be returned, slave → host
	174
45.20	175	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	176	\|=(% 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	177	\|(% 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
	178
16.3	179	The address of the EC K10 sensor is 11
16.1	180
10.1	181	The query data command is 11 03 00 00 00 02 C6 9B
	182
45.48	183	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	184
	185
37.1	186	Query the data (EC,temperature) of the sensor (address 11), host → slave
	187
45.20	188	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	189	\|=(% 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	190	\|(% 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
	191
	192	If the sensor receives correctly, the following data will be returned, slave → host
	193
45.20	194	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	195	\|=(% 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	196	\|(% 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
	197
10.1	198	The address of the EC K1 sensor is 12
	199
	200	The query data command is 12 03 00 00 00 02 C6 A8
	201
45.48	202	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	203
11.1	204
16.2	205	=== 1.7.5 Calibration Method ===
12.1	206
	207
15.1	208	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	209
45.63	210	(% style="color:blue" %)The calibration steps are as follows:
	211
15.1	212	(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.
	213
45.20	214	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	215	\|=(% 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	216	\|(% 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" %)(((
	217	0X00
	218	0X00
	219	0X37
	220	0X32
	221	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	222
15.1	223	1413*10 gives 0X00003732
14.1	224
45.48	225	response:
15.1	226
45.20	227	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	228	\|=(% 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	229	\|(% 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
	230
	231	(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
	232
45.20	233	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	234	\|=(% 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	235	\|(% 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" %)(((
	236	0X00
	237	0X01
	238	0XF7
	239	0X20
	240	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	241
15.1	242	12880*10 gives 0X01F720
	243
45.48	244	response:
14.1	245
45.20	246	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	247	\|=(% 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	248	\|(% 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
	249
8.1	250	= 2. DR-PH01 Water PH Sensor =
	251
28.2	252	== 2.1 Specification ==
9.1	253
45.20	254
26.1	255	* Power Input: DC7~~30
45.62	256
26.1	257	* Power Consumption : < 0.5W
45.62	258
26.1	259	* Interface: RS485. 9600 Baud Rate
45.62	260
26.1	261	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	262
	263	* pH measurement error: ±0.15pH
	264
	265	* Repeatability error: ±0.02pH
	266
	267	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	268
	269	* Temperature measurement error: ±0.5°C
	270
59.1	271	* Working environment:
	272	** Ambient Temperature: 0–60°C
	273	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.62	274
26.1	275	* Temperature Accuracy: ±0.5 °C
45.62	276
26.1	277	* IP Rated: IP68
45.62	278
26.1	279	* Max Pressure: 0.6MPa
	280
	281	== 2.2 Wiring ==
	282
45.49	283
45.1	284	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	285
45.1	286
45.62	287	== 2.3 Mechinical Drawing ==
26.1	288
45.49	289
26.1	290	[[image:image-20240714174241-2.png]]
	291
	292
	293	== 2.4 Installation Notice ==
	294
45.49	295
26.1	296	Do not power on while connect the cables. Double check the wiring before power on.
	297
	298	Installation Photo as reference:
	299
45.50	300	(% style="color:blue" %)Submerged installation:
26.1	301
	302	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.
	303
	304	[[image:image-20240718191348-6.png]]
	305
45.50	306	(% style="color:blue" %)Pipeline installation:
26.1	307
	308	Connect the equipment to the pipeline through the 3/4 thread.
	309
	310	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	311
45.50	312	(% style="color:blue" %)Sampling:
26.1	313
	314	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.
	315
45.50	316	(% style="color:blue" %)Measure the pH of the water sample:
26.1	317
	318	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.
	319
	320
39.1	321	== 2.5 Maintenance ==
26.1	322
	323
	324	* 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	325
26.1	326	* 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	327
26.1	328	* 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	329
26.1	330	* 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	331
26.1	332	* 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	333
26.1	334	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	335
26.1	336	* 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	337
26.1	338	* 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.
	339
45.62	340	* 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.
	341
26.1	342	== 2.6 RS485 Commands ==
	343
45.51	344
27.1	345	RS485 signaldefault address 0x10
	346	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	347
45.51	348
33.2	349	=== 2.6.1 Query address ===
27.1	350
45.51	351
45.52	352	send:
27.1	353
45.52	354	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	355	\|=(% 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	356	\|(% 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
	357
45.52	358	response:
27.1	359
45.52	360	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	361	\|=(% 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	362	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	363
	364	=== 2.6.2 Change address ===
	365
45.52	366
27.1	367	For example: Change the address of the sensor with address 1 to 2, master → slave
	368
45.52	369	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	370	\|=(% 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	371	\|(% 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
	372
	373	If the sensor receives correctly, the data is returned along the original path.
	374
45.52	375	(% 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	376
45.52	377
27.1	378	=== 2.6.3 Modify intercept ===
	379
	380
45.52	381	send:
27.1	382
45.52	383	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	384	\|=(% 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	385	\|(% 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	386	0XA5
	387	)))
	388
34.4	389	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	390
45.52	391	response:
27.1	392
45.52	393	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	394	\|=(% 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	395	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	396	0X00
	397	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	398	0XA5
	399	)))
	400
	401	=== 2.6.4 Query data ===
	402
	403
34.3	404	Query the data (PH) of the sensor (address 10), host → slave
9.1	405
45.52	406	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.59	407	\|=(% 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	408	\|(% 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
	409
	410	If the sensor receives correctly, the following data will be returned, slave → host
	411
45.75	412	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	413	\|=(% 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	414	\|(% 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	415
11.1	416	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	417
11.1	418	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	419
	420	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.
	421
	422
27.1	423	=== 2.6.5 Calibration Method ===
	424
	425
	426	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	427
	428	(% style="color:blue" %)The calibration steps are as follows:
	429
27.1	430	(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.
	431
45.52	432	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	433	\|=(% 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	434	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	435	0X00
	436	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	437	0XF1
	438	)))
	439
	440	(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.
	441
45.52	442	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	443	\|=(% 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	444	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	445	0X00
	446	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	447	0X31
	448	)))
	449
	450	(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.
	451
45.52	452	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	453	\|=(% 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	454	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	455	0X00
	456	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	457	0X31
	458	)))
	459
	460	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.
	461
	462
8.1	463	= 3. DR-ORP1 Water ORP Sensor =
	464
28.2	465	== 3.1 Specification ==
27.2	466
45.75	467
27.2	468	* Power Input: DC7~~30
45.69	469
32.1	470	* Measuring range: -1999~~1999mV
45.69	471
45.70	472	* Resolution: 1mV
45.69	473
27.2	474	* Interface: RS485. 9600 Baud Rate
45.69	475
27.2	476	* Measurement error: ±3mV
45.69	477
27.2	478	* Stability: ≤2mv/24 hours
45.69	479
59.1	480	* Working environment:
	481	** Ambient Temperature: 0–60°C
	482	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.69	483
27.2	484	* IP Rated: IP68
45.69	485
27.2	486	* Max Pressure: 0.6MPa
	487
	488	== 3.2 Wiring ==
	489
45.75	490
45.1	491	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	492
45.1	493
27.2	494	== 3.3 Mechinical Drawing ==
	495
45.75	496
27.2	497	[[image:image-20240714174241-2.png]]
	498
45.77	499
27.2	500	== 3.4 Installation Notice ==
	501
45.75	502
27.2	503	Do not power on while connect the cables. Double check the wiring before power on.
	504
45.75	505	Installation Photo as reference:
27.2	506
45.70	507	(% style="color:blue" %) Submerged installation:
27.2	508
	509	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.
	510
	511	[[image:image-20240718191348-6.png]]
	512
45.70	513	(% style="color:blue" %) Pipeline installation:
27.2	514
	515	Connect the equipment to the pipeline through the 3/4 thread.
	516
	517	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	518
	519
39.1	520	== 3.5 Maintenance ==
8.1	521
9.1	522
29.1	523	(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	524
29.1	525	(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	526
29.1	527	(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	528
29.1	529	(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	530
29.1	531	(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	532
29.1	533	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	534
29.1	535	(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	536
29.1	537	(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	538
29.1	539	(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.
	540
45.75	541
29.1	542	== 3.6 RS485 Commands ==
	543
	544
	545	RS485 signaldefault address 0x13
	546	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	547
45.75	548
33.2	549	=== 3.6.1 Query address ===
29.1	550
	551
45.75	552	send:
	553
45.69	554	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	555	\|=(% 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	556	\|(% 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
	557
45.75	558	response:
29.1	559
45.69	560	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	561	\|=(% 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	562	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	563
	564	=== 3.6.2 Change address ===
	565
45.75	566
29.1	567	For example: Change the address of the sensor with address 1 to 2, master → slave
	568
45.71	569	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	570	\|=(% 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	571	\|(% 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
	572
	573	If the sensor receives correctly, the data is returned along the original path.
	574
45.75	575	(% 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	576
45.75	577
29.1	578	=== 3.6.3 Modify intercept ===
	579
	580
45.75	581	send:
	582
45.69	583	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	584	\|=(% 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	585	\|(% 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" %)(((
	586	0X96
	587	)))
	588
	589	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	590
45.75	591	response:
29.1	592
45.69	593	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	594	\|=(% 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	595	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	596	0X00
	597	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	598	0X96
	599	)))
	600
	601	=== 3.6.4 Query data ===
	602
9.1	603
37.1	604	Query the data (ORP) of the sensor (address 13), host → slave
35.1	605
45.69	606	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	607	\|=(% 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	608	\|(% 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
	609
	610	If the sensor receives correctly, the following data will be returned, slave → host
	611
45.69	612	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	613	\|=(% 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	614	\|(% 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
	615
11.1	616	The query data command is 13 03 00 00 00 01 87 78
10.1	617
11.1	618	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	619
11.1	620	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	621
	622
29.1	623	=== 3.6.5 Calibration Method ===
	624
45.75	625
29.1	626	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	627	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	628	enter the following calibration command, and the 86mV point calibration is completed;
	629
45.69	630	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	631	\|=(% 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	632	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	633	0X00
	634	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	635	0X03
	636	)))
	637
	638	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.
	639
45.69	640	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	641	\|=(% 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
	642	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	643	0X00
	644	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	645	0XC3
	646	)))
	647
8.1	648	= 4. DR-DO1 Dissolved Oxygen Sensor =
	649
32.1	650	== 4.1 Specification ==
	651
33.2	652
58.1	653	* Measuring range: 0-20mg/L, 0–50℃
45.77	654
58.1	655	* Accuracy: 3%, ±0.5℃
45.77	656
58.1	657	* Resolution: 0.01 mg/L, 0.01℃
45.77	658
33.2	659	* Maximum operating pressure: 6 bar
45.77	660
33.2	661	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	662
33.2	663	* Power supply voltage: 5-24V DC
45.77	664
59.1	665	* Working environment:
	666	** Ambient Temperature: 0–60°C
	667	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	668
32.1	669	* Power consumption: ≤0.5W
	670
33.2	671	== 4.2 wiring ==
32.1	672
45.77	673
45.1	674	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	675
	676
45.77	677	== 4.3 Impedance requirements for current signals ==
33.2	678
45.77	679
46.2	680	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	681	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	682	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
45.96	683
32.1	684	== 4.4 Mechinical Drawing ==
	685
	686
33.2	687	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	688
33.2	689
39.1	690	== 4.5 Instructions for use and maintenance ==
32.1	691
45.77	692
32.1	693	* 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	694
32.1	695	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	696
	697	== 4.6 RS485 Commands ==
	698
45.77	699
34.1	700	RS485 signaldefault address 0x14
	701	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	702
45.77	703
32.3	704	=== 4.6.1 Query address ===
32.1	705
32.3	706
45.77	707	send:
	708
	709	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	710	\|=(% 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	711	\|(% 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	712
34.1	713	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	714
	715
45.77	716	response:
32.3	717
34.1	718	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	719	Register 1 data high and register 1 data low indicate the sensor version
32.3	720
45.77	721	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	722	\|=(% 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	723	\|(% 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
	724
33.2	725	=== 4.6.2 Change address ===
32.3	726
45.77	727
34.1	728	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	729
45.77	730	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	731	\|=(% 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	732	\|(% 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
	733
45.77	734	response:
32.3	735
45.77	736	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	737	\|=(% 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	738	\|(% 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	739
34.1	740	=== 4.6.3 Query data ===
9.1	741
	742
34.2	743	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	744
45.77	745	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	746	\|=(% 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	747	\|(% 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
	748
34.2	749	If the sensor receives correctly, the following data will be returned, slave → host
34.1	750
45.77	751	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	752	\|=(% 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	753	\|(% 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	754
11.1	755	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	756
	757	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
	758
11.1	759
34.2	760	Query the data (temperature) of the sensor (address 14), host → slave
	761
45.77	762	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	763	\|=(% 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	764	\|(% 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
	765
	766	If the sensor receives correctly, the following data will be returned, slave → host
	767
45.77	768	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	769	\|=(% 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	770	\|(% 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
	771
	772	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.
	773
45.77	774	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	775
	776
8.1	777	= 5. DR-TS1 Water Turbidity Sensor =
	778
45.77	779	== 5.1 Specification ==
9.1	780
10.1	781
49.1	782	* Measuring range: 0.1~~1000.0NTU
32.3	783
	784	* Accuracy: ±5%
45.77	785
32.3	786	* Resolution: 0.1NTU
45.77	787
32.3	788	* Stability: ≤3mV/24 hours
	789
54.1	790	* Output signal: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	791
55.1	792	* Power supply voltage: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
45.77	793
59.1	794	* Working environment:
	795	** Ambient Temperature: 0–60°C
	796	** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
45.77	797
	798	* Power consumption: ≤ 0.5W
	799
32.3	800	== 5.2 wiring ==
	801
45.77	802
45.1	803	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	804
45.1	805
32.3	806	== 5.3 Impedance requirements for current signals ==
	807
45.88	808
46.3	809	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
	810	\|(% style="width:132px" %)Supply Voltage\|(% style="width:67px" %)9V\|(% style="width:67px" %)12V\|(% style="width:67px" %)20V\|(% style="width:67px" %)24V
	811	\|(% style="width:132px" %)Max Impedance\|(% style="width:65px" %)<250Ω\|(% style="width:67px" %)<400Ω\|(% style="width:67px" %)<500Ω\|(% style="width:65px" %)<900Ω
32.3	812
	813	== 5.4 Mechinical Drawing ==
	814
45.77	815
32.3	816	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
	817
	818
39.1	819	== 5.5 Instructions for use and maintenance ==
32.3	820
45.77	821
32.3	822	* 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	823
32.3	824	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	825
	826	== 5.6 RS485 Commands ==
	827
	828
36.1	829	RS485 signaldefault address 0x15
	830	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	831
45.77	832
36.1	833	=== 5.6.1 Query address ===
	834
32.3	835
45.77	836	send:
	837
	838	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	839	\|=(% 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	840	\|(% 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	841
	842	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.
	843
	844
45.77	845	response:
32.3	846
45.77	847	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	848	\|=(% 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	849	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	850
36.1	851	=== 5.6.2 Change address ===
32.3	852
45.87	853
36.1	854	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	855
45.77	856	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	857	\|=(% 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	858	\|(% 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
	859
	860	If the sensor receives correctly, the data is returned along the original path.
	861
45.77	862	(% 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.
	863
45.84	864
36.1	865	=== 5.6.3 Query data ===
	866
	867
	868	Query the data (turbidity) of the sensor (address 15), host → slave
	869
45.77	870	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	871	\|=(% 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	872	\|(% 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
	873
	874	If the sensor receives correctly, the following data will be returned, slave → host
	875
45.77	876	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	877	\|=(% 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	878	\|(% 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
	879
11.1	880	The query data command is 15 03 00 00 00 01 87 1E
10.1	881
11.1	882	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	883
	884	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	885
	886
	887	= 6. Water Quality Sensor Datasheet =
	888
	889
51.1	890	* [[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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