Wiki source code of Water Quality Sensors

Version 45.69 by Xiaoling on 2024/08/06 15:37

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
	22	ECK1.0** : 2 ~~ 2,000 μS/cm Resolution: 1 μS/cm
	23	ECK10.0** : 20 ~~ 20,000 μS/cm Resolution: 10 μS/cm
45.63	24
7.1	25	* EC Accuracy: ±1% FS
45.63	26
7.1	27	* Temperature Measure Range: -20 ~~ 60 °C
45.63	28
7.1	29	* Temperature Accuracy: ±0.5 °C
45.63	30
7.1	31	* IP Rated: IP68
45.63	32
7.1	33	* Max Pressure: 0.6MPa
	34
45.63	35
7.1	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
45.1	45	[[image:image-20240720172533-1.png\|\|height="347" width="569"]]
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
26.1	272	* Temperature Measure Range: -20 ~~ 60 °C
45.62	273
26.1	274	* Temperature Accuracy: ±0.5 °C
45.62	275
26.1	276	* IP Rated: IP68
45.62	277
26.1	278	* Max Pressure: 0.6MPa
	279
	280	== 2.2 Wiring ==
	281
45.49	282
45.1	283	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	284
45.1	285
45.62	286	== 2.3 Mechinical Drawing ==
26.1	287
45.49	288
26.1	289	[[image:image-20240714174241-2.png]]
	290
	291
	292	== 2.4 Installation Notice ==
	293
45.49	294
26.1	295	Do not power on while connect the cables. Double check the wiring before power on.
	296
	297	Installation Photo as reference:
	298
45.50	299	(% style="color:blue" %)Submerged installation:
26.1	300
	301	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.
	302
	303	[[image:image-20240718191348-6.png]]
	304
45.50	305	(% style="color:blue" %)Pipeline installation:
26.1	306
	307	Connect the equipment to the pipeline through the 3/4 thread.
	308
	309	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	310
45.50	311	(% style="color:blue" %)Sampling:
26.1	312
	313	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.
	314
45.50	315	(% style="color:blue" %)Measure the pH of the water sample:
26.1	316
	317	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.
	318
	319
39.1	320	== 2.5 Maintenance ==
26.1	321
	322
	323	* 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	324
26.1	325	* 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	326
26.1	327	* 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	328
26.1	329	* 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	330
26.1	331	* 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	332
26.1	333	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	334
26.1	335	* 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	336
26.1	337	* 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.
	338
45.62	339	* 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.
	340
	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
45.60	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
	467	* Power Input: DC7~~30
45.69	468
32.1	469	* Measuring range: -1999~~1999mV
45.69	470
32.1	471	Resolution: 1mV
45.69	472
	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
	480	* Equipment working conditions: Ambient temperature: 0-60°C Relative humidity: <85%RH
	481
27.2	482	* IP Rated: IP68
45.69	483
27.2	484	* Max Pressure: 0.6MPa
	485
	486	== 3.2 Wiring ==
	487
45.1	488	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	489
45.1	490
27.2	491	== 3.3 Mechinical Drawing ==
	492
	493	[[image:image-20240714174241-2.png]]
	494
	495	== 3.4 Installation Notice ==
	496
	497	Do not power on while connect the cables. Double check the wiring before power on.
	498
	499	Installation Photo as reference:
	500
	501	~ Submerged installation:
	502
	503	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.
	504
	505	[[image:image-20240718191348-6.png]]
	506
	507	~ Pipeline installation:
	508
	509	Connect the equipment to the pipeline through the 3/4 thread.
	510
	511	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	512
	513
39.1	514	== 3.5 Maintenance ==
8.1	515
9.1	516
29.1	517	(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	518
29.1	519	(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	520
29.1	521	(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	522
29.1	523	(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	524
29.1	525	(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	526
29.1	527	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	528
29.1	529	(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	530
29.1	531	(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	532
29.1	533	(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.
	534
	535	== 3.6 RS485 Commands ==
	536
	537
	538	RS485 signaldefault address 0x13
	539	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	540
33.2	541	=== 3.6.1 Query address ===
29.1	542
	543	send
	544
45.69	545	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
29.1	546	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
	547	\|(% 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
	548
	549	response
	550
45.69	551	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
29.1	552	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 50px;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
	553	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	554
	555	=== 3.6.2 Change address ===
	556
	557	For example: Change the address of the sensor with address 1 to 2, master → slave
	558
45.69	559	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:6185px" %)
29.1	560	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
	561	\|(% 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
	562
	563	If the sensor receives correctly, the data is returned along the original path.
	564	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.
	565
	566
	567	=== 3.6.3 Modify intercept ===
	568
	569	send
	570
45.69	571	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
35.1	572	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 67px; 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: 69px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high\|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
29.1	573	\|(% 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" %)(((
	574	0X96
	575	)))
	576
	577	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	578
	579	response
	580
45.69	581	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
29.1	582	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
	583	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	584	0X00
	585	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	586	0X96
	587	)))
	588
	589	=== 3.6.4 Query data ===
	590
9.1	591
37.1	592	Query the data (ORP) of the sensor (address 13), host → slave
35.1	593
45.69	594	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
35.1	595	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	596	\|(% 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
	597
	598	If the sensor receives correctly, the following data will be returned, slave → host
	599
45.69	600	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
35.1	601	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	602	\|(% 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
	603
11.1	604	The query data command is 13 03 00 00 00 01 87 78
10.1	605
11.1	606	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	607
11.1	608	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	609
	610
29.1	611	=== 3.6.5 Calibration Method ===
	612
	613	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	614	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	615	enter the following calibration command, and the 86mV point calibration is completed;
	616
45.69	617	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
29.1	618	\|=(% style="width: 64px; 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
	619	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	620	0X00
	621	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	622	0X03
	623	)))
	624
	625	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.
	626
45.69	627	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
29.1	628	\|=(% style="width: 64px; 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
	629	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	630	0X00
	631	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	632	0XC3
	633	)))
	634
8.1	635	= 4. DR-DO1 Dissolved Oxygen Sensor =
	636
32.1	637	== 4.1 Specification ==
	638
33.2	639
	640	* Measuring range: 0-20mg/L, 0-50℃
	641	* Accuracy: 3%, ±0.5℃
	642	* Resolution: 0.01 mg/L, 0.01℃
	643	* Maximum operating pressure: 6 bar
	644	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	645	* Power supply voltage: 5-24V DC
	646	* Working environment: temperature 0-60℃; humidity <95%RH
32.1	647	* Power consumption: ≤0.5W
	648
33.2	649	== 4.2 wiring ==
32.1	650
45.1	651	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	652
	653
	654	== (% id="cke_bm_224234S" style="display:none" %) (%%)4.3 Impedance requirements for current signals ==
	655
32.1	656	[[image:image-20240718195414-8.png\|\|height="100" width="575"]]
	657
	658
	659	== 4.4 Mechinical Drawing ==
	660
	661
33.2	662	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	663
33.2	664
39.1	665	== 4.5 Instructions for use and maintenance ==
32.1	666
	667	* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	668	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	669
	670	== 4.6 RS485 Commands ==
	671
34.1	672	RS485 signaldefault address 0x14
	673	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	674
32.3	675	=== 4.6.1 Query address ===
32.1	676
32.3	677	send
	678
	679	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
34.1	680	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Register address high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register address low\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	681	\|(% 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	682
34.1	683	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	684
	685
	686	response
	687
34.1	688	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	689	Register 1 data high and register 1 data low indicate the sensor version
32.3	690
34.1	691	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	692	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	693	\|(% 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
	694
33.2	695	=== 4.6.2 Change address ===
32.3	696
34.1	697	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	698
	699	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:907.333px" %)
	700	\|=(% style="width: 67px; background-color: rgb(79, 129, 189); color: white;" %)Original address\|=(% style="width: 71px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 65px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high\|=(% style="width: 65px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Start address high\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Start address low\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version\|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low
	701	\|(% 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
	702
34.1	703	response
32.3	704
34.1	705	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	706	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	707	\|(% 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	708
34.1	709	=== 4.6.3 Query data ===
9.1	710
	711
34.2	712	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	713
	714	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	715	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	716	\|(% 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
	717
34.2	718	If the sensor receives correctly, the following data will be returned, slave → host
34.1	719
	720	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	721	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
34.2	722	\|(% 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	723
11.1	724	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	725
	726	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
	727
11.1	728
34.2	729	Query the data (temperature) of the sensor (address 14), host → slave
	730
	731	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	732	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	733	\|(% 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
	734
	735	If the sensor receives correctly, the following data will be returned, slave → host
	736
	737	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	738	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	739	\|(% 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
	740
	741	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.
	742
	743	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℃
	744
	745
8.1	746	= 5. DR-TS1 Water Turbidity Sensor =
	747
9.1	748
10.1	749
32.3	750	== (% id="cke_bm_81470S" style="display:none" %) (%%)5.1 Specification ==
	751
	752	* Measuring range: 0.1～1000.0NTU
	753	* Accuracy: ±5%
	754	* Resolution: 0.1NTU
	755	* Stability: ≤3mV/24 hours
	756	* Output signal: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	757	* Power supply voltage: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
	758	* Working environment: temperature 0～60℃; humidity ≤95%RH
	759	* Power consumption: ≤0.5W
	760
	761	== 5.2 wiring ==
	762
45.1	763	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	764
45.1	765
32.3	766	== 5.3 Impedance requirements for current signals ==
	767
	768	[[image:image-20240718195414-8.png\|\|height="100" width="575"]]
	769
	770
	771	== 5.4 Mechinical Drawing ==
	772
	773	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
	774
	775
39.1	776	== 5.5 Instructions for use and maintenance ==
32.3	777
	778	* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	779	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	780
	781	== 5.6 RS485 Commands ==
	782
	783
36.1	784	RS485 signaldefault address 0x15
	785	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	786
	787	=== 5.6.1 Query address ===
	788
32.3	789	send
	790
	791	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	792	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	793	\|(% style="width:99px" %)0XFE \|(% style="width:72px" %)0X03\|(% style="width:64px" %)0X00\|(% style="width:68px" %)0X50\|(% style="width:70px" %)0X00\|(% style="width:72px" %)0X00\|(% style="width:56px" %)0X51\|(% style="width:56px" %)0XD4
	794
	795	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.
	796
	797
	798	response
	799
	800	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	801	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 50px;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
	802	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	803
36.1	804	=== 5.6.2 Change address ===
32.3	805
36.1	806	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	807
36.1	808	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	809	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
	810	\|(% 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
	811
	812	If the sensor receives correctly, the data is returned along the original path.
	813	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.
	814
	815	=== 5.6.3 Query data ===
	816
	817
	818	Query the data (turbidity) of the sensor (address 15), host → slave
	819
	820	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	821	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register length high\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Register length low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	822	\|(% 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
	823
	824	If the sensor receives correctly, the following data will be returned, slave → host
	825
	826	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	827	\|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address\|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high\|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	828	\|(% 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
	829
11.1	830	The query data command is 15 03 00 00 00 01 87 1E
10.1	831
11.1	832	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	833
	834	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

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