Wiki source code of Water Quality Sensors

Version 45.97 by Xiaoling on 2024/08/06 18:08

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
45.97	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
45.97	103
8.1	104	== 1.7 RS485 Commands ==
	105
15.2	106
	107	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	108	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	109
	110
16.1	111	=== 1.7.1 Query address ===
8.1	112
11.1	113
45.48	114	send:
45.2	115
	116	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	117	\|=(% style="width: 74.75px;background-color:#4F81BD;color:white" %)Original address\|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high\|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity low\|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 low\|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 high
45.32	118	\|(% style="width:99px" %)0XFE \|(% style="width:72px" %)0X03\|(% style="width:50px" %)0X00\|(% style="width:42px" %)0X50\|(% style="width:42px" %)0X00\|(% style="width:42px" %)0X00\|(% style="width:56px" %)0X51\|(% style="width:56px" %)0XD4
16.1	119
	120	If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
	121
	122
45.48	123	response:
16.1	124
45.14	125	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	126	\|=(% style="width: 100px;background-color:#4F81BD;color:white" %)New address\|=(% style="width: 110px;background-color:#4F81BD;color:white" %)Function code\|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length\|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low\|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
27.1	127	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	128
45.97	129
16.1	130	=== 1.7.2 Change address ===
	131
45.2	132
16.1	133	For example: Change the address of the sensor with address 1 to 2, master → slave
	134
45.20	135	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	136	\|=(% 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	137	\|(% 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	138
	139	If the sensor receives correctly, the data is returned along the original path.
	140
45.32	141	(% 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	142
45.32	143
16.1	144	=== 1.7.3 Modify intercept ===
	145
	146
45.48	147	send:
16.1	148
45.36	149	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	150	\|=(% 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
	151	\|(% 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	152	0X07
16.1	153	)))
	154
	155	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	156
45.48	157	response:
16.1	158
45.36	159	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	160	\|=(% 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	161	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	162	0X02
27.1	163	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	164	0X8F
16.1	165	)))
	166
45.97	167
16.1	168	=== 1.7.4 Query data ===
	169
37.1	170
	171	Query the data (EC,temperature) of the sensor (address 11), host → slave
	172
45.20	173	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	174	\|=(% 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	175	\|(% 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
	176
	177	If the sensor receives correctly, the following data will be returned, slave → host
	178
45.20	179	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	180	\|=(% 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	181	\|(% 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
	182
16.3	183	The address of the EC K10 sensor is 11
16.1	184
10.1	185	The query data command is 11 03 00 00 00 02 C6 9B
	186
45.48	187	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	188
	189
37.1	190	Query the data (EC,temperature) of the sensor (address 11), host → slave
	191
45.20	192	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	193	\|=(% 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	194	\|(% 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
	195
	196	If the sensor receives correctly, the following data will be returned, slave → host
	197
45.20	198	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	199	\|=(% 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	200	\|(% 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
	201
10.1	202	The address of the EC K1 sensor is 12
	203
	204	The query data command is 12 03 00 00 00 02 C6 A8
	205
45.48	206	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	207
11.1	208
16.2	209	=== 1.7.5 Calibration Method ===
12.1	210
	211
15.1	212	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	213
45.63	214	(% style="color:blue" %)The calibration steps are as follows:
	215
15.1	216	(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.
	217
45.20	218	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	219	\|=(% 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	220	\|(% 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" %)(((
	221	0X00
	222	0X00
	223	0X37
	224	0X32
	225	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	226
15.1	227	1413*10 gives 0X00003732
14.1	228
45.48	229	response:
15.1	230
45.20	231	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	232	\|=(% 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	233	\|(% 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
	234
	235	(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
	236
45.20	237	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	238	\|=(% 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	239	\|(% 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" %)(((
	240	0X00
	241	0X01
	242	0XF7
	243	0X20
	244	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	245
15.1	246	12880*10 gives 0X01F720
	247
45.48	248	response:
14.1	249
45.20	250	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	251	\|=(% 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	252	\|(% 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
	253
45.97	254
8.1	255	= 2. DR-PH01 Water PH Sensor =
	256
28.2	257	== 2.1 Specification ==
9.1	258
45.20	259
26.1	260	* Power Input: DC7~~30
45.62	261
26.1	262	* Power Consumption : < 0.5W
45.62	263
26.1	264	* Interface: RS485. 9600 Baud Rate
45.62	265
26.1	266	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
45.62	267
	268	* pH measurement error: ±0.15pH
	269
	270	* Repeatability error: ±0.02pH
	271
	272	* Temperature measurement range:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	273
	274	* Temperature measurement error: ±0.5°C
	275
26.1	276	* Temperature Measure Range: -20 ~~ 60 °C
45.62	277
26.1	278	* Temperature Accuracy: ±0.5 °C
45.62	279
26.1	280	* IP Rated: IP68
45.62	281
26.1	282	* Max Pressure: 0.6MPa
	283
45.97	284
26.1	285	== 2.2 Wiring ==
	286
45.49	287
45.1	288	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	289
45.1	290
45.62	291	== 2.3 Mechinical Drawing ==
26.1	292
45.49	293
26.1	294	[[image:image-20240714174241-2.png]]
	295
	296
	297	== 2.4 Installation Notice ==
	298
45.49	299
26.1	300	Do not power on while connect the cables. Double check the wiring before power on.
	301
	302	Installation Photo as reference:
	303
45.50	304	(% style="color:blue" %)Submerged installation:
26.1	305
	306	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.
	307
	308	[[image:image-20240718191348-6.png]]
	309
45.50	310	(% style="color:blue" %)Pipeline installation:
26.1	311
	312	Connect the equipment to the pipeline through the 3/4 thread.
	313
	314	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	315
45.50	316	(% style="color:blue" %)Sampling:
26.1	317
	318	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.
	319
45.50	320	(% style="color:blue" %)Measure the pH of the water sample:
26.1	321
	322	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.
	323
	324
39.1	325	== 2.5 Maintenance ==
26.1	326
	327
	328	* 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	329
26.1	330	* 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	331
26.1	332	* 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	333
26.1	334	* 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	335
26.1	336	* 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	337
26.1	338	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
45.62	339
26.1	340	* 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	341
26.1	342	* 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.
	343
45.62	344	* 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.
	345
45.97	346
26.1	347	== 2.6 RS485 Commands ==
	348
45.51	349
27.1	350	RS485 signaldefault address 0x10
	351	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	352
45.51	353
33.2	354	=== 2.6.1 Query address ===
27.1	355
45.51	356
45.52	357	send:
27.1	358
45.52	359	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	360	\|=(% 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	361	\|(% 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
	362
45.52	363	response:
27.1	364
45.52	365	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	366	\|=(% 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	367	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	368
	369	=== 2.6.2 Change address ===
	370
45.52	371
27.1	372	For example: Change the address of the sensor with address 1 to 2, master → slave
	373
45.52	374	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	375	\|=(% 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	376	\|(% 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
	377
	378	If the sensor receives correctly, the data is returned along the original path.
	379
45.52	380	(% 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	381
45.52	382
27.1	383	=== 2.6.3 Modify intercept ===
	384
	385
45.52	386	send:
27.1	387
45.52	388	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	389	\|=(% 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	390	\|(% 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	391	0XA5
	392	)))
	393
34.4	394	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	395
45.52	396	response:
27.1	397
45.52	398	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	399	\|=(% 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	400	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	401	0X00
	402	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	403	0XA5
	404	)))
	405
	406	=== 2.6.4 Query data ===
	407
	408
34.3	409	Query the data (PH) of the sensor (address 10), host → slave
9.1	410
45.52	411	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.59	412	\|=(% 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	413	\|(% 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
	414
	415	If the sensor receives correctly, the following data will be returned, slave → host
	416
45.75	417	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.61	418	\|=(% 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	419	\|(% 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	420
11.1	421	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	422
11.1	423	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	424
	425	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.
	426
	427
27.1	428	=== 2.6.5 Calibration Method ===
	429
	430
	431	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.62	432
	433	(% style="color:blue" %)The calibration steps are as follows:
	434
27.1	435	(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.
	436
45.52	437	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	438	\|=(% 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	439	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	440	0X00
	441	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	442	0XF1
	443	)))
	444
	445	(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.
	446
45.52	447	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	448	\|=(% 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	449	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	450	0X00
	451	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	452	0X31
	453	)))
	454
	455	(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.
	456
45.52	457	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.68	458	\|=(% 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	459	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	460	0X00
	461	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	462	0X31
	463	)))
	464
	465	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.
	466
	467
8.1	468	= 3. DR-ORP1 Water ORP Sensor =
	469
28.2	470	== 3.1 Specification ==
27.2	471
45.75	472
27.2	473	* Power Input: DC7~~30
45.69	474
32.1	475	* Measuring range: -1999~~1999mV
45.69	476
45.70	477	* Resolution: 1mV
45.69	478
27.2	479	* Interface: RS485. 9600 Baud Rate
45.69	480
27.2	481	* Measurement error: ±3mV
45.69	482
27.2	483	* Stability: ≤2mv/24 hours
45.69	484
	485	* Equipment working conditions: Ambient temperature: 0-60°C Relative humidity: <85%RH
	486
27.2	487	* IP Rated: IP68
45.69	488
27.2	489	* Max Pressure: 0.6MPa
	490
45.97	491
27.2	492	== 3.2 Wiring ==
	493
45.75	494
45.1	495	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	496
45.1	497
27.2	498	== 3.3 Mechinical Drawing ==
	499
45.75	500
27.2	501	[[image:image-20240714174241-2.png]]
	502
45.77	503
27.2	504	== 3.4 Installation Notice ==
	505
45.75	506
27.2	507	Do not power on while connect the cables. Double check the wiring before power on.
	508
45.75	509	Installation Photo as reference:
27.2	510
45.70	511	(% style="color:blue" %) Submerged installation:
27.2	512
	513	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.
	514
	515	[[image:image-20240718191348-6.png]]
	516
45.70	517	(% style="color:blue" %) Pipeline installation:
27.2	518
	519	Connect the equipment to the pipeline through the 3/4 thread.
	520
	521	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	522
	523
39.1	524	== 3.5 Maintenance ==
8.1	525
9.1	526
29.1	527	(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	528
29.1	529	(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	530
29.1	531	(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	532
29.1	533	(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	534
29.1	535	(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	536
29.1	537	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	538
29.1	539	(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	540
29.1	541	(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	542
29.1	543	(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.
	544
45.75	545
29.1	546	== 3.6 RS485 Commands ==
	547
	548
	549	RS485 signaldefault address 0x13
	550	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	551
45.75	552
33.2	553	=== 3.6.1 Query address ===
29.1	554
	555
45.75	556	send:
	557
45.69	558	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	559	\|=(% 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	560	\|(% 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
	561
45.97	562
45.75	563	response:
29.1	564
45.69	565	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.71	566	\|=(% 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	567	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	568
45.97	569
29.1	570	=== 3.6.2 Change address ===
	571
45.75	572
29.1	573	For example: Change the address of the sensor with address 1 to 2, master → slave
	574
45.71	575	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.72	576	\|=(% 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	577	\|(% 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
	578
	579	If the sensor receives correctly, the data is returned along the original path.
	580
45.75	581	(% 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	582
45.75	583
29.1	584	=== 3.6.3 Modify intercept ===
	585
	586
45.75	587	send:
	588
45.69	589	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	590	\|=(% 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	591	\|(% 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" %)(((
	592	0X96
	593	)))
	594
	595	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	596
45.75	597	response:
29.1	598
45.69	599	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	600	\|=(% 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	601	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	602	0X00
	603	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	604	0X96
	605	)))
	606
45.97	607
29.1	608	=== 3.6.4 Query data ===
	609
9.1	610
37.1	611	Query the data (ORP) of the sensor (address 13), host → slave
35.1	612
45.69	613	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	614	\|=(% 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	615	\|(% 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
	616
	617	If the sensor receives correctly, the following data will be returned, slave → host
	618
45.69	619	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.73	620	\|=(% 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	621	\|(% 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
	622
11.1	623	The query data command is 13 03 00 00 00 01 87 78
10.1	624
11.1	625	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	626
11.1	627	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	628
	629
29.1	630	=== 3.6.5 Calibration Method ===
	631
45.75	632
29.1	633	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	634	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	635	enter the following calibration command, and the 86mV point calibration is completed;
	636
45.69	637	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	638	\|=(% 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	639	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	640	0X00
	641	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	642	0X03
	643	)))
	644
	645	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.
	646
45.69	647	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.74	648	\|=(% 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
	649	\|(% style="width:68px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
29.1	650	0X00
	651	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	652	0XC3
	653	)))
	654
8.1	655	= 4. DR-DO1 Dissolved Oxygen Sensor =
	656
32.1	657	== 4.1 Specification ==
	658
33.2	659
45.76	660	* Measuring range: 0-20mg/L, 0-50°C
45.77	661
45.76	662	* Accuracy: 3%, ±0.5°C
45.77	663
45.76	664	* Resolution: 0.01 mg/L, 0.01°C
45.77	665
33.2	666	* Maximum operating pressure: 6 bar
45.77	667
33.2	668	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	669
33.2	670	* Power supply voltage: 5-24V DC
45.77	671
45.76	672	* Working environment: temperature 0-60°C; humidity <95%RH
45.77	673
32.1	674	* Power consumption: ≤0.5W
	675
33.2	676	== 4.2 wiring ==
32.1	677
45.77	678
45.1	679	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	680
	681
45.77	682	== 4.3 Impedance requirements for current signals ==
33.2	683
45.77	684
45.96	685	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
	686	\|=(% style="width: 140px" %)Supply Voltage\|=(% style="width: 70px;" %)9V\|=(% style="width: 70px;" %)12V\|=(% style="width: 70px;" %)20V\|=(% style="width: 70px;" %)24V
	687	\|(% style="width:137px" %)Max Impedance\|(% style="width:70px" %)<250Ω\|(% style="width:68px" %)<400Ω\|(% style="width:68px" %)<500Ω\|(% style="width:70px" %)<900Ω
	688
32.1	689	[[image:image-20240718195414-8.png\|\|height="100" width="575"]]
	690
	691
	692	== 4.4 Mechinical Drawing ==
	693
	694
33.2	695	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	696
33.2	697
39.1	698	== 4.5 Instructions for use and maintenance ==
32.1	699
45.77	700
32.1	701	* 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	702
32.1	703	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	704
45.96	705
32.1	706	== 4.6 RS485 Commands ==
	707
45.77	708
34.1	709	RS485 signaldefault address 0x14
	710	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	711
45.77	712
32.3	713	=== 4.6.1 Query address ===
32.1	714
32.3	715
45.77	716	send:
	717
	718	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.79	719	\|=(% 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	720	\|(% 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	721
34.1	722	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	723
	724
45.77	725	response:
32.3	726
34.1	727	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	728	Register 1 data high and register 1 data low indicate the sensor version
32.3	729
45.77	730	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.80	731	\|=(% 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	732	\|(% 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
	733
33.2	734	=== 4.6.2 Change address ===
32.3	735
45.77	736
34.1	737	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	738
45.77	739	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.83	740	\|=(% 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	741	\|(% 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
	742
45.77	743	response:
32.3	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" %)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	748
45.96	749
34.1	750	=== 4.6.3 Query data ===
9.1	751
	752
34.2	753	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	754
45.77	755	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	756	\|=(% 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	757	\|(% 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
	758
34.2	759	If the sensor receives correctly, the following data will be returned, slave → host
34.1	760
45.77	761	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.81	762	\|=(% 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	763	\|(% 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	764
11.1	765	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	766
	767	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
	768
11.1	769
34.2	770	Query the data (temperature) of the sensor (address 14), host → slave
	771
45.77	772	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	773	\|=(% 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	774	\|(% 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
	775
	776	If the sensor receives correctly, the following data will be returned, slave → host
	777
45.77	778	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.82	779	\|=(% 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	780	\|(% 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
	781
	782	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.
	783
45.77	784	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	785
	786
8.1	787	= 5. DR-TS1 Water Turbidity Sensor =
	788
45.77	789	== 5.1 Specification ==
9.1	790
10.1	791
45.87	792	* Measuring range: 0.11000.0NTU
32.3	793
	794	* Accuracy: ±5%
45.77	795
32.3	796	* Resolution: 0.1NTU
45.77	797
32.3	798	* Stability: ≤3mV/24 hours
	799
45.87	800	* Output signal: A: 420 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
45.77	801
45.87	802	* Power supply voltage: 524V DC (when output signal is RS485)1224V DC (when output signal is 420mA)
45.77	803
45.87	804	* Working environment: temperature 060°C; humidity ≤ 95%RH
45.77	805
	806	* Power consumption: ≤ 0.5W
	807
32.3	808	== 5.2 wiring ==
	809
45.77	810
45.1	811	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	812
45.1	813
32.3	814	== 5.3 Impedance requirements for current signals ==
	815
45.88	816
45.95	817	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
	818	\|=(% style="width: 140px" %)Supply Voltage\|=(% style="width: 70px;" %)9V\|=(% style="width: 70px;" %)12V\|=(% style="width: 70px;" %)20V\|=(% style="width: 70px;" %)24V
45.94	819	\|(% style="width:137px" %)Max Impedance\|(% style="width:70px" %)<250Ω\|(% style="width:68px" %)<400Ω\|(% style="width:68px" %)<500Ω\|(% style="width:70px" %)<900Ω
32.3	820
	821
	822	== 5.4 Mechinical Drawing ==
	823
45.77	824
32.3	825	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
	826
	827
39.1	828	== 5.5 Instructions for use and maintenance ==
32.3	829
45.77	830
32.3	831	* 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	832
32.3	833	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	834
	835	== 5.6 RS485 Commands ==
	836
	837
36.1	838	RS485 signaldefault address 0x15
	839	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	840
45.77	841
36.1	842	=== 5.6.1 Query address ===
	843
32.3	844
45.77	845	send:
	846
	847	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	848	\|=(% 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	849	\|(% 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	850
	851	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.
	852
	853
45.77	854	response:
32.3	855
45.77	856	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	857	\|=(% 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	858	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	859
36.1	860	=== 5.6.2 Change address ===
32.3	861
45.87	862
36.1	863	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	864
45.77	865	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.86	866	\|=(% 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	867	\|(% 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
	868
	869	If the sensor receives correctly, the data is returned along the original path.
	870
45.77	871	(% 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.
	872
45.84	873
36.1	874	=== 5.6.3 Query data ===
	875
	876
	877	Query the data (turbidity) of the sensor (address 15), host → slave
	878
45.77	879	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	880	\|=(% 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	881	\|(% 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
	882
	883	If the sensor receives correctly, the following data will be returned, slave → host
	884
45.77	885	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.84	886	\|=(% 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	887	\|(% 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
	888
11.1	889	The query data command is 15 03 00 00 00 01 87 1E
10.1	890
11.1	891	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	892
	893	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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