Wiki source code of Water Quality Sensors

Version 45.57 by Xiaoling on 2024/08/06 14:24

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
	14	* Power Consumption : < 0.5W
	15	* Interface: RS485. 9600 Baud Rate
	16	* EC Range & Resolution:
	17	ECK0.01** : 0.02 ~~ 20 μS/cm
	18	ECK0.1**: 0.2 ~~ 200.0 μS/cm
	19	ECK1.0** : 2 ~~ 2,000 μS/cm Resolution: 1 μS/cm
	20	ECK10.0** : 20 ~~ 20,000 μS/cm Resolution: 10 μS/cm
	21	* EC Accuracy: ±1% FS
	22	* Temperature Measure Range: -20 ~~ 60 °C
	23	* Temperature Accuracy: ±0.5 °C
	24	* IP Rated: IP68
	25	* Max Pressure: 0.6MPa
	26
	27	== 1.2 Application for Different Range ==
	28
45.2	29
7.1	30	[[image:image-20240714173018-1.png]]
	31
	32
	33	== 1.3 Wiring ==
	34
45.2	35
45.1	36	[[image:image-20240720172533-1.png\|\|height="347" width="569"]]
7.1	37
45.1	38
7.1	39	== 1.4 Mechinical Drawing ==
	40
45.2	41
7.1	42	[[image:image-20240714174241-2.png]]
	43
	44
	45	== 1.5 Installation ==
	46
	47
45.2	48	Electrode installation form:
15.2	49
45.2	50	A: Side wall installation
15.2	51
45.2	52	B: Top flange installation
15.2	53
45.2	54	C: Pipeline bend installation
15.2	55
45.2	56	D: Pipeline bend installation
15.2	57
45.2	58	E: Flow-through installation
15.2	59
45.2	60	F: Submerged installation
15.2	61
23.1	62	[[image:image-20240718190121-1.png\|\|height="350" width="520"]]
15.2	63
18.1	64	Several common installation methods of electrodes
15.2	65
18.1	66	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	67
18.1	68	A. Several common incorrect installation methods
15.2	69
23.1	70	[[image:image-20240718190204-2.png\|\|height="262" width="487"]]
15.2	71
45.2	72	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	73
23.1	74	[[image:image-20240718190221-3.png\|\|height="292" width="500"]]
18.1	75
45.2	76	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	77
	78	B. Correct installation method
	79
23.1	80	[[image:image-20240718190249-4.png\|\|height="287" width="515"]]
18.1	81
	82
38.1	83	== 1.6 Maintenance ==
7.1	84
	85
26.1	86	* 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.
	87	* 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.
	88	* 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.
	89	* 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	90
8.1	91	== 1.7 RS485 Commands ==
	92
15.2	93
	94	RS485 signal (K1 default address 0x12; K10 default address 0x11):
	95	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	96
	97
16.1	98	=== 1.7.1 Query address ===
8.1	99
11.1	100
45.48	101	send:
45.2	102
	103	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.40	104	\|=(% 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	105	\|(% 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	106
	107	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.
	108
	109
45.48	110	response:
16.1	111
45.14	112	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.10	113	\|=(% 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	114	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
16.1	115
	116	=== 1.7.2 Change address ===
	117
45.2	118
16.1	119	For example: Change the address of the sensor with address 1 to 2, master → slave
	120
45.20	121	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.39	122	\|=(% 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	123	\|(% 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	124
	125	If the sensor receives correctly, the data is returned along the original path.
	126
45.32	127	(% 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	128
45.32	129
16.1	130	=== 1.7.3 Modify intercept ===
	131
	132
45.48	133	send:
16.1	134
45.36	135	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.34	136	\|=(% 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
	137	\|(% 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	138	0X07
16.1	139	)))
	140
	141	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	142
45.48	143	response:
16.1	144
45.36	145	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
45.35	146	\|=(% 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	147	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	148	0X02
27.1	149	)))\|(% style="width:126px" %)0X00\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X0A\|(% style="width:1px" %)0X38\|(% style="width:1px" %)(((
	150	0X8F
16.1	151	)))
	152
	153	=== 1.7.4 Query data ===
	154
37.1	155
	156	Query the data (EC,temperature) of the sensor (address 11), host → slave
	157
45.20	158	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.43	159	\|=(% 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	160	\|(% 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
	161
	162	If the sensor receives correctly, the following data will be returned, slave → host
	163
45.20	164	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.42	165	\|=(% 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	166	\|(% 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
	167
16.3	168	The address of the EC K10 sensor is 11
16.1	169
10.1	170	The query data command is 11 03 00 00 00 02 C6 9B
	171
45.48	172	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	173
	174
37.1	175	Query the data (EC,temperature) of the sensor (address 11), host → slave
	176
45.20	177	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	178	\|=(% 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	179	\|(% 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
	180
	181	If the sensor receives correctly, the following data will be returned, slave → host
	182
45.20	183	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.44	184	\|=(% 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	185	\|(% 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
	186
10.1	187	The address of the EC K1 sensor is 12
	188
	189	The query data command is 12 03 00 00 00 02 C6 A8
	190
45.48	191	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	192
11.1	193
16.2	194	=== 1.7.5 Calibration Method ===
12.1	195
	196
15.1	197	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	198
45.48	199	The calibration steps are as follows:
15.1	200	(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.
	201
45.20	202	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	203	\|=(% 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	204	\|(% 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" %)(((
	205	0X00
	206	0X00
	207	0X37
	208	0X32
	209	)))\|(% style="width:1px" %)0XBD\|(% style="width:1px" %)0XFC
	210
15.1	211	1413*10 gives 0X00003732
14.1	212
45.48	213	response:
15.1	214
45.20	215	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	216	\|=(% 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	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" %)0XA2\|(% style="width:1px" %)0XA0
	218
	219	(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
	220
45.20	221	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.47	222	\|=(% 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	223	\|(% 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" %)(((
	224	0X00
	225	0X01
	226	0XF7
	227	0X20
	228	)))\|(% style="width:1px" %)0X33\|(% style="width:1px" %)0X75
	229
15.1	230	12880*10 gives 0X01F720
	231
45.48	232	response:
14.1	233
45.20	234	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.45	235	\|=(% 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	236	\|(% 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
	237
8.1	238	= 2. DR-PH01 Water PH Sensor =
	239
28.2	240	== 2.1 Specification ==
9.1	241
45.20	242
26.1	243	* Power Input: DC7~~30
	244	* Power Consumption : < 0.5W
	245	* Interface: RS485. 9600 Baud Rate
	246	* pH measurement range: 0~~14.00pH; resolution: 0.01pH
	247	* pH measurement error:±0.15pH
	248	* Repeatability error:±0.02pH
	249	* Temperature measurement range:0~~60℃; resolution: 0.1℃ (set temperature for manual temperature compensation, default 25℃)
	250	* Temperature measurement error: ±0.5℃
	251	* Temperature Measure Range: -20 ~~ 60 °C
	252	* Temperature Accuracy: ±0.5 °C
	253	* IP Rated: IP68
	254	* Max Pressure: 0.6MPa
	255
	256	== 2.2 Wiring ==
	257
45.49	258
45.1	259	[[image:image-20240720172548-2.png\|\|height="348" width="571"]]
26.1	260
45.1	261
26.1	262	== (% style="color:inherit; font-family:inherit" %)2.3 (% style="color:inherit; font-family:inherit; font-size:26px" %)Mechinical Drawing(%%) ==
	263
45.49	264
26.1	265	[[image:image-20240714174241-2.png]]
	266
	267
	268	== 2.4 Installation Notice ==
	269
45.49	270
26.1	271	Do not power on while connect the cables. Double check the wiring before power on.
	272
	273	Installation Photo as reference:
	274
45.50	275	(% style="color:blue" %)Submerged installation:
26.1	276
	277	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.
	278
	279	[[image:image-20240718191348-6.png]]
	280
45.50	281	(% style="color:blue" %)Pipeline installation:
26.1	282
	283	Connect the equipment to the pipeline through the 3/4 thread.
	284
	285	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	286
45.50	287	(% style="color:blue" %)Sampling:
26.1	288
	289	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.
	290
45.50	291	(% style="color:blue" %)Measure the pH of the water sample:
26.1	292
	293	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.
	294
	295
39.1	296	== 2.5 Maintenance ==
26.1	297
	298
	299	* 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!
	300	* 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.
	301	* 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.
	302	* 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.
	303	* 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.
	304	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
	305	* 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.
	306	* 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.
	307	* (((
	308	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.
	309	)))
	310
	311	== 2.6 RS485 Commands ==
	312
45.51	313
27.1	314	RS485 signaldefault address 0x10
	315	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
26.1	316
45.51	317
33.2	318	=== 2.6.1 Query address ===
27.1	319
45.51	320
45.52	321	send:
27.1	322
45.52	323	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.53	324	\|=(% 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	325	\|(% 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
	326
45.52	327	response:
27.1	328
45.52	329	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	330	\|=(% 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	331	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	332
	333	=== 2.6.2 Change address ===
	334
45.52	335
27.1	336	For example: Change the address of the sensor with address 1 to 2, master → slave
	337
45.52	338	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.57	339	\|=(% 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	340	\|(% 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
	341
	342	If the sensor receives correctly, the data is returned along the original path.
	343
45.52	344	(% 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	345
45.52	346
27.1	347	=== 2.6.3 Modify intercept ===
	348
	349
45.52	350	send:
27.1	351
45.52	352	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.56	353	\|=(% 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	354	\|(% 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	355	0XA5
	356	)))
	357
34.4	358	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	359
45.52	360	response:
27.1	361
45.52	362	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
45.55	363	\|=(% 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	364	\|(% style="width:99px" %)0X10\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	365	0X00
	366	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	367	0XA5
	368	)))
	369
45.57	370
27.1	371	=== 2.6.4 Query data ===
	372
	373
34.3	374	Query the data (PH) of the sensor (address 10), host → slave
9.1	375
45.52	376	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
34.3	377	\|=(% 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
	378	\|(% 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
	379
	380	If the sensor receives correctly, the following data will be returned, slave → host
	381
45.52	382	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
34.3	383	\|=(% 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
35.1	384	\|(% 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	385
11.1	386	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
10.1	387
11.1	388	For example, the returned data is 10 03 02 (% style="color:red" %)02 AE(%%) C4 9B.
	389
	390	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.
	391
	392
27.1	393	=== 2.6.5 Calibration Method ===
	394
	395
	396	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
45.52	397	The calibration steps are as follows:
27.1	398	(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.
	399
45.52	400	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
27.1	401	\|=(% 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
	402	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	403	0X00
	404	)))\|(% style="width:68px" %)0X20\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X8A\|(% style="width:55px" %)(((
	405	0XF1
	406	)))
	407
	408	(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.
	409
45.52	410	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
27.1	411	\|=(% 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
	412	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	413	0X00
	414	)))\|(% style="width:68px" %)0X21\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XDB\|(% style="width:55px" %)(((
	415	0X31
	416	)))
	417
	418	(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.
	419
45.52	420	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
27.1	421	\|=(% 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
	422	\|(% style="width:64px" %)0X10\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	423	0X00
	424	)))\|(% style="width:68px" %)0X22\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X2B\|(% style="width:55px" %)(((
	425	0X31
	426	)))
	427
	428	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.
	429
	430
8.1	431	= 3. DR-ORP1 Water ORP Sensor =
	432
28.2	433	== 3.1 Specification ==
27.2	434
	435	* Power Input: DC7~~30
32.1	436	* Measuring range: -1999~~1999mV
	437	Resolution: 1mV
27.2	438	* Interface: RS485. 9600 Baud Rate
	439	* Measurement error: ±3mV
	440	* Stability: ≤2mv/24 hours
	441	* Equipment working conditions: Ambient temperature: 0-60℃ Relative humidity: <85%RH
	442	* IP Rated: IP68
	443	* Max Pressure: 0.6MPa
	444
	445	== 3.2 Wiring ==
	446
45.1	447	[[image:image-20240720172620-3.png\|\|height="378" width="620"]]
27.2	448
45.1	449
27.2	450	== 3.3 Mechinical Drawing ==
	451
	452	[[image:image-20240714174241-2.png]]
	453
	454	== 3.4 Installation Notice ==
	455
	456	Do not power on while connect the cables. Double check the wiring before power on.
	457
	458	Installation Photo as reference:
	459
	460	~ Submerged installation:
	461
	462	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.
	463
	464	[[image:image-20240718191348-6.png]]
	465
	466	~ Pipeline installation:
	467
	468	Connect the equipment to the pipeline through the 3/4 thread.
	469
	470	[[image:image-20240718191336-5.png\|\|height="239" width="326"]]
	471
	472
39.1	473	== 3.5 Maintenance ==
8.1	474
9.1	475
29.1	476	(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	477
29.1	478	(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	479
29.1	480	(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	481
29.1	482	(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	483
29.1	484	(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	485
29.1	486	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
32.3	487
29.1	488	(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	489
29.1	490	(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	491
29.1	492	(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.
	493
	494	== 3.6 RS485 Commands ==
	495
	496
	497	RS485 signaldefault address 0x13
	498	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	499
33.2	500	=== 3.6.1 Query address ===
29.1	501
	502	send
	503
	504	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	505	\|=(% 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
	506	\|(% 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
	507
	508	response
	509
	510	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	511	\|=(% 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
	512	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	513
	514	=== 3.6.2 Change address ===
	515
	516	For example: Change the address of the sensor with address 1 to 2, master → slave
	517
	518	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	519	\|=(% 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
	520	\|(% 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
	521
	522	If the sensor receives correctly, the data is returned along the original path.
	523	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.
	524
	525
	526	=== 3.6.3 Modify intercept ===
	527
	528	send
	529
	530	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
35.1	531	\|=(% 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	532	\|(% 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" %)(((
	533	0X96
	534	)))
	535
	536	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	537
	538	response
	539
	540	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	541	\|=(% 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
	542	\|(% style="width:99px" %)0X13\|(% style="width:112px" %)0X06\|(% style="width:135px" %)(((
	543	0X00
	544	)))\|(% style="width:126px" %)0X10\|(% style="width:85px" %)0X00\|(% style="width:1px" %)0X64\|(% style="width:1px" %)0X8A\|(% style="width:1px" %)(((
	545	0X96
	546	)))
	547
	548	=== 3.6.4 Query data ===
	549
9.1	550
37.1	551	Query the data (ORP) of the sensor (address 13), host → slave
35.1	552
	553	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	554	\|=(% 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
	555	\|(% 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
	556
	557	If the sensor receives correctly, the following data will be returned, slave → host
	558
	559	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	560	\|=(% 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
	561	\|(% 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
	562
11.1	563	The query data command is 13 03 00 00 00 01 87 78
10.1	564
11.1	565	For example, the returned data is 13 03 02 (% style="color:red" %)02 AE(%%) 80 9B.
10.1	566
11.1	567	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
	568
	569
29.1	570	=== 3.6.5 Calibration Method ===
	571
	572	This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	573	(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	574	enter the following calibration command, and the 86mV point calibration is completed;
	575
	576	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	577	\|=(% 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
	578	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	579	0X00
	580	)))\|(% style="width:68px" %)0X24\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0XCB\|(% style="width:55px" %)(((
	581	0X03
	582	)))
	583
	584	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.
	585
	586	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	587	\|=(% 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
	588	\|(% style="width:64px" %)0X13\|(% style="width:72px" %)0X06\|(% style="width:66px" %)(((
	589	0X00
	590	)))\|(% style="width:68px" %)0X25\|(% style="width:72px" %)0XFF\|(% style="width:70px" %)0XFF\|(% style="width:55px" %)0X9A\|(% style="width:55px" %)(((
	591	0XC3
	592	)))
	593
8.1	594	= 4. DR-DO1 Dissolved Oxygen Sensor =
	595
	596
11.1	597
32.1	598	== 4.1 Specification ==
	599
33.2	600
	601	* Measuring range: 0-20mg/L, 0-50℃
	602	* Accuracy: 3%, ±0.5℃
	603	* Resolution: 0.01 mg/L, 0.01℃
	604	* Maximum operating pressure: 6 bar
	605	* Output signal: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	606	* Power supply voltage: 5-24V DC
	607	* Working environment: temperature 0-60℃; humidity <95%RH
32.1	608	* Power consumption: ≤0.5W
	609
33.2	610	== 4.2 wiring ==
32.1	611
45.1	612	[[image:image-20240720172632-4.png\|\|height="390" width="640"]]
33.2	613
	614
	615	== (% id="cke_bm_224234S" style="display:none" %) (%%)4.3 Impedance requirements for current signals ==
	616
32.1	617	[[image:image-20240718195414-8.png\|\|height="100" width="575"]]
	618
	619
	620	== 4.4 Mechinical Drawing ==
	621
	622
33.2	623	[[image:image-20240719155308-1.png\|\|height="226" width="527"]]
32.1	624
33.2	625
39.1	626	== 4.5 Instructions for use and maintenance ==
32.1	627
	628	* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	629	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	630
	631	== 4.6 RS485 Commands ==
	632
34.1	633	RS485 signaldefault address 0x14
	634	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	635
32.3	636	=== 4.6.1 Query address ===
32.1	637
32.3	638	send
	639
	640	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
34.1	641	\|=(% 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
	642	\|(% 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	643
34.1	644	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	645
	646
	647	response
	648
34.1	649	Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	650	Register 1 data high and register 1 data low indicate the sensor version
32.3	651
34.1	652	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	653	\|=(% 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
	654	\|(% 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
	655
33.2	656	=== 4.6.2 Change address ===
32.3	657
34.1	658	For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
33.2	659
	660	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:907.333px" %)
	661	\|=(% 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
	662	\|(% 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
	663
34.1	664	response
32.3	665
34.1	666	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	667	\|=(% 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
	668	\|(% 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	669
34.1	670	=== 4.6.3 Query data ===
9.1	671
	672
34.2	673	Query the data (dissolved oxygen) of the sensor (address 14), host → slave
34.1	674
	675	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	676	\|=(% 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
	677	\|(% 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
	678
34.2	679	If the sensor receives correctly, the following data will be returned, slave → host
34.1	680
	681	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	682	\|=(% 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	683	\|(% 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	684
11.1	685	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	686
	687	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
	688
11.1	689
34.2	690	Query the data (temperature) of the sensor (address 14), host → slave
	691
	692	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	693	\|=(% 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
	694	\|(% 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
	695
	696	If the sensor receives correctly, the following data will be returned, slave → host
	697
	698	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	699	\|=(% 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
	700	\|(% 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
	701
	702	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.
	703
	704	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℃
	705
	706
8.1	707	= 5. DR-TS1 Water Turbidity Sensor =
	708
9.1	709
10.1	710
32.3	711	== (% id="cke_bm_81470S" style="display:none" %) (%%)5.1 Specification ==
	712
	713	* Measuring range: 0.1～1000.0NTU
	714	* Accuracy: ±5%
	715	* Resolution: 0.1NTU
	716	* Stability: ≤3mV/24 hours
	717	* Output signal: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	718	* Power supply voltage: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
	719	* Working environment: temperature 0～60℃; humidity ≤95%RH
	720	* Power consumption: ≤0.5W
	721
	722	== 5.2 wiring ==
	723
45.1	724	[[image:image-20240720172640-5.png\|\|height="387" width="635"]]
32.3	725
45.1	726
32.3	727	== 5.3 Impedance requirements for current signals ==
	728
	729	[[image:image-20240718195414-8.png\|\|height="100" width="575"]]
	730
	731
	732	== 5.4 Mechinical Drawing ==
	733
	734	[[image:image-20240718195058-7.png\|\|height="305" width="593"]]
	735
	736
39.1	737	== 5.5 Instructions for use and maintenance ==
32.3	738
	739	* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	740	* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	741
	742	== 5.6 RS485 Commands ==
	743
	744
36.1	745	RS485 signaldefault address 0x15
	746	Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	747
	748	=== 5.6.1 Query address ===
	749
32.3	750	send
	751
	752	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	753	\|=(% 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
	754	\|(% 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
	755
	756	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.
	757
	758
	759	response
	760
	761	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	762	\|=(% 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
	763	\|(% style="width:99px" %)0X01\|(% style="width:112px" %)0X03\|(% style="width:106px" %)0X00\|(% style="width:93px" %)0X20\|(% style="width:104px" %)0XF0
	764
36.1	765	=== 5.6.2 Change address ===
32.3	766
36.1	767	For example: Change the address of the sensor with address 1 to 2, master → slave
10.1	768
36.1	769	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	770	\|=(% 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
	771	\|(% 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
	772
	773	If the sensor receives correctly, the data is returned along the original path.
	774	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.
	775
	776	=== 5.6.3 Query data ===
	777
	778
	779	Query the data (turbidity) of the sensor (address 15), host → slave
	780
	781	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	782	\|=(% 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
	783	\|(% 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
	784
	785	If the sensor receives correctly, the following data will be returned, slave → host
	786
	787	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	788	\|=(% 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
	789	\|(% 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
	790
11.1	791	The query data command is 15 03 00 00 00 01 87 1E
10.1	792
11.1	793	For example, the returned data is 15 03 02 (% style="color:red" %)02 9A(%%) 09 4C
	794
	795	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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