Changes for page Water Quality Sensors

Summary

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Details

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Author

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1		-XWiki.karry
	1	+XWiki.Xiaoling

Content

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3	3	{{toc/}}
4	4
5	5
	6	+
	7	+
6	6	= 1. DR-ECK Water EC Probe =
7	7
8	8	== 1.1 Specification: ==
9	9
	12	+
10	10	* **Power Input**: DC7~~30
11	11	* **Power Consumption** : < 0.5W
12	12	* **Interface**: RS485. 9600 Baud Rate
...	...	@@ -21,8 +21,11 @@
21	21	* **IP Rated**: IP68
22	22	* **Max Pressure**: 0.6MPa
23	23
	27	+
	28	+
24	24	== 1.2 Application for Different Range ==
25	25
	31	+
26	26	[[image:image-20240714173018-1.png]]
27	27
28	28
...	...	@@ -29,8 +29,12 @@
29	29	== 1.3 Wiring ==
30	30
31	31
	38	+[[image:image-20240720172533-1.png||height="347" width="569"]]
	39	+
	40	+
32	32	== 1.4 Mechinical Drawing ==
33	33
	43	+
34	34	[[image:image-20240714174241-2.png]]
35	35
36	36
...	...	@@ -37,21 +37,21 @@
37	37	== 1.5 Installation ==
38	38
39	39
40		-**Electrode installation form**
	50	+**Electrode installation form:**
41	41
42		-A:Side wall installation
	52	+A: Side wall installation
43	43
44		-B:Top flange installation
	54	+B: Top flange installation
45	45
46		-C:Pipeline bend installation
	56	+C: Pipeline bend installation
47	47
48		-D:Pipeline bend installation
	58	+D: Pipeline bend installation
49	49
50		-E:Flow-through installation
	60	+E: Flow-through installation
51	51
52		-F:Submerged installation
	62	+F: Submerged installation
53	53
54		-[[image:image-20240716104537-2.png||height="475" width="706"]]
	64	+[[image:image-20240718190121-1.png||height="350" width="520"]]
55	55
56	56	**Several common installation methods of electrodes**
57	57
...	...	@@ -59,35 +59,29 @@
59	59
60	60	A. Several common incorrect installation methods
61	61
62		-[[image:image-20240717103452-1.png||height="320" width="610"]]
	72	+[[image:image-20240718190204-2.png||height="262" width="487"]]
63	63
64		-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.
65		-
	74	+**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.
66	66
67		-[[image:image-20240716105124-4.png||height="326" width="569"]]
	76	+[[image:image-20240718190221-3.png||height="292" width="500"]]
68	68
69		-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.
	78	+**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.
70	70
71	71	B. Correct installation method
72	72
73		-[[image:image-20240716105318-5.png||height="330" width="594"]]
	82	+[[image:image-20240718190249-4.png||height="287" width="515"]]
74	74
75	75
76		-== 1.6 Maintain ==
	85	+== 1.6 Maintenance ==
77	77
78	78
79		-* 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!
80		-* 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.
81		-* 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.
82		-* 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.
83		-* 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.
84		-* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
85		-* 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.
86		-* 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.
87		-* (((
88		-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.
89		-)))
	88	+* 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.
	89	+* 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.
	90	+* 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.
	91	+* 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.).
90	90
	93	+
	94	+
91	91	== 1.7 RS485 Commands ==
92	92
93	93
...	...	@@ -97,28 +97,32 @@
97	97
98	98	=== 1.7.1 Query address ===
99	99
100		-send
101	101
102		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
103		-|=(% 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
104		-|(% 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
	105	+**send**
105	105
	107	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	108	+|=(% 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
	109	+|(% 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
	110	+
106	106	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.
107	107
108	108
109		-response
	114	+**response**
110	110
111	111	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
112	112	|=(% 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
113		-|(% style="width:99px" %)0X1|(% style="width:112px" %)0X3|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	118	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
114	114
	120	+
	121	+
115	115	=== 1.7.2 Change address ===
116	116
	124	+
117	117	For example: Change the address of the sensor with address 1 to 2, master → slave
118	118
119		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
120		-|=(% 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
121		-|(% 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
	127	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	128	+|=(% style="width: 69px; background-color: rgb(79, 129, 189); color: white;" %)Original address|=(% style="width: 76px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 67px; 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: 73px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 73px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 57px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	129	+|(% style="width:69px" %)0X01|(% style="width:76px" %)0X06|(% style="width:67px" %)0X00|(% style="width:68px" %)0X50|(% style="width:73px" %)0X00|(% style="width:73px" %)0X02|(% style="width:57px" %)0X08|(% style="width:56px" %)0X1A
122	122
123	123	If the sensor receives correctly, the data is returned along the original path.
124	124	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.
...	...	@@ -131,8 +131,8 @@
131	131
132	132	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
133	133	|=(% 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
134		-|(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X23|(% style="width:85px" %)0X00|(% style="width:1px" %)0X01|(% style="width:1px" %)0XFA|(% style="width:1px" %)(((
135		-0X97
	142	+|(% style="width:99px" %)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" %)(((
	143	+0X07
136	136	)))
137	137
138	138	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
...	...	@@ -143,24 +143,50 @@
143	143	|=(% 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
144	144	|(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
145	145	0X02
146		-)))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X0A|(% style="width:1px" %)(((
147		-0XE5
	154	+)))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X38|(% style="width:1px" %)(((
	155	+0X8F
148	148	)))
149	149
150	150	=== 1.7.4 Query data ===
151	151
	160	+
	161	+
	162	+Query the data (EC,temperature) of the sensor (address 11), host → slave
	163	+
	164	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	165	+|=(% 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
	166	+|(% 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
	167	+
	168	+If the sensor receives correctly, the following data will be returned, slave → host
	169	+
	170	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	171	+|=(% 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: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 70px; 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
	172	+|(% 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
	173	+
152	152	The address of the EC K10 sensor is 11
153	153
154	154	The query data command is 11 03 00 00 00 02 C6 9B
155	155
156		-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
	178	+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.
157	157
158	158
	181	+Query the data (EC,temperature) of the sensor (address 11), host → slave
	182	+
	183	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	184	+|=(% 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
	185	+|(% 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
	186	+
	187	+If the sensor receives correctly, the following data will be returned, slave → host
	188	+
	189	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	190	+|=(% 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: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 70px; 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
	191	+|(% 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
	192	+
159	159	The address of the EC K1 sensor is 12
160	160
161	161	The query data command is 12 03 00 00 00 02 C6 A8
162	162
163		-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
	197	+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.
164	164
165	165
166	166	=== 1.7.5 Calibration Method ===
...	...	@@ -213,14 +213,145 @@
213	213	|=(% 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
214	214	|(% 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
215	215
216		-
217	217	= 2. DR-PH01 Water PH Sensor =
218	218
219		-== 2.7 RS485 Commands ==
220	220
	253	+== 2.1 Specification ==
221	221
222		-The address of the pH  sensor is 10
	255	+* **Power Input**: DC7~~30
	256	+* **Power Consumption** : < 0.5W
	257	+* **Interface**: RS485. 9600 Baud Rate
	258	+* **pH measurement range**: 0~~14.00pH; resolution: 0.01pH
	259	+* **pH measurement error**:±0.15pH
	260	+* **Repeatability error**:±0.02pH
	261	+* **Temperature measurement range**:0~~60℃; resolution: 0.1℃ (set temperature for manual temperature compensation, default 25℃)
	262	+* **Temperature measurement error**: ±0.5℃
	263	+* **Temperature Measure Range**: -20 ~~ 60 °C
	264	+* **Temperature Accuracy: **±0.5 °C
	265	+* **IP Rated**: IP68
	266	+* **Max Pressure**: 0.6MPa
223	223
	268	+== 2.2 Wiring ==
	269	+
	270	+[[image:image-20240720172548-2.png||height="348" width="571"]]
	271	+
	272	+
	273	+== (% style="color:inherit; font-family:inherit" %)2.3 (% style="color:inherit; font-family:inherit; font-size:26px" %)Mechinical Drawing(%%) ==
	274	+
	275	+[[image:image-20240714174241-2.png]]
	276	+
	277	+
	278	+== 2.4 Installation Notice ==
	279	+
	280	+Do not power on while connect the cables. Double check the wiring before power on.
	281	+
	282	+Installation Photo as reference:
	283	+
	284	+**~ Submerged installation:**
	285	+
	286	+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.
	287	+
	288	+[[image:image-20240718191348-6.png]]
	289	+
	290	+**~ Pipeline installation:**
	291	+
	292	+Connect the equipment to the pipeline through the 3/4 thread.
	293	+
	294	+[[image:image-20240718191336-5.png||height="239" width="326"]]
	295	+
	296	+**Sampling:**
	297	+
	298	+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.
	299	+
	300	+**Measure the pH of the water sample:**
	301	+
	302	+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.
	303	+
	304	+
	305	+== 2.5 Maintenance ==
	306	+
	307	+
	308	+* 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!
	309	+* 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.
	310	+* 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.
	311	+* 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.
	312	+* 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.
	313	+* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
	314	+* 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.
	315	+* 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.
	316	+* (((
	317	+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.
	318	+)))
	319	+
	320	+== 2.6 RS485 Commands ==
	321	+
	322	+RS485 signaldefault address 0x10
	323	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	324	+
	325	+=== 2.6.1 Query address ===
	326	+
	327	+send
	328	+
	329	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	330	+|=(% 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
	331	+|(% 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
	332	+
	333	+response
	334	+
	335	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	336	+|=(% 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
	337	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	338	+
	339	+=== 2.6.2 Change address ===
	340	+
	341	+For example: Change the address of the sensor with address 1 to 2, master → slave
	342	+
	343	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	344	+|=(% 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
	345	+|(% 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
	346	+
	347	+If the sensor receives correctly, the data is returned along the original path.
	348	+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.
	349	+
	350	+
	351	+=== 2.6.3 Modify intercept ===
	352	+
	353	+
	354	+send
	355	+
	356	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:570.333px" %)
	357	+|=(% style="width: 71px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 74px; background-color: rgb(79, 129, 189); 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: 57px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 57px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	358	+|(% 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" %)(((
	359	+0XA5
	360	+)))
	361	+
	362	+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.
	363	+
	364	+response
	365	+
	366	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	367	+|=(% 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
	368	+|(% style="width:99px" %)0X10|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
	369	+0X00
	370	+)))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
	371	+0XA5
	372	+)))
	373	+
	374	+=== 2.6.4 Query data ===
	375	+
	376	+
	377	+Query the data (PH) of the sensor (address 10), host → slave
	378	+
	379	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	380	+|=(% 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
	381	+|(% 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
	382	+
	383	+If the sensor receives correctly, the following data will be returned, slave → host
	384	+
	385	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	386	+|=(% 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
	387	+|(% 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
	388	+
224	224	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
225	225
226	226	For example, the returned data is 10 03 02 (% style="color:red" %)**02 AE**(%%) C4 9B.
...	...	@@ -228,13 +228,177 @@
228	228	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.
229	229
230	230
	396	+=== 2.6.5 Calibration Method ===
	397	+
	398	+
	399	+This device uses three-point calibration, and three known pH standard solutions need to be prepared.
	400	+The calibration steps are as follows:
	401	+(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.
	402	+
	403	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	404	+|=(% 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
	405	+|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	406	+0X00
	407	+)))|(% style="width:68px" %)0X20|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X8A|(% style="width:55px" %)(((
	408	+0XF1
	409	+)))
	410	+
	411	+(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.
	412	+
	413	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	414	+|=(% 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
	415	+|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	416	+0X00
	417	+)))|(% style="width:68px" %)0X21|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XDB|(% style="width:55px" %)(((
	418	+0X31
	419	+)))
	420	+
	421	+(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.
	422	+
	423	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	424	+|=(% 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
	425	+|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	426	+0X00
	427	+)))|(% style="width:68px" %)0X22|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X2B|(% style="width:55px" %)(((
	428	+0X31
	429	+)))
	430	+
	431	+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.
	432	+
	433	+
231	231	= 3. DR-ORP1 Water ORP Sensor =
232	232
233		-== 3.7 RS485 Commands ==
234	234
	437	+== 3.1 Specification ==
235	235
236		-The address of the ORP sensor is 13
	439	+* **Power Input**: DC7~~30
	440	+* **Measuring range**:** **-1999~~1999mV
	441	+**Resolution**: 1mV
	442	+* **Interface**: RS485. 9600 Baud Rate
	443	+* **Measurement error**: ±3mV
	444	+* **Stability**: ≤2mv/24 hours
	445	+* **Equipment working conditions**: Ambient temperature: 0-60℃ Relative humidity: <85%RH
	446	+* **IP Rated**: IP68
	447	+* **Max Pressure**: 0.6MPa
237	237
	449	+== 3.2 Wiring ==
	450	+
	451	+[[image:image-20240720172620-3.png||height="378" width="620"]]
	452	+
	453	+
	454	+== 3.3 Mechinical Drawing ==
	455	+
	456	+[[image:image-20240714174241-2.png]]
	457	+
	458	+== 3.4 Installation Notice ==
	459	+
	460	+Do not power on while connect the cables. Double check the wiring before power on.
	461	+
	462	+Installation Photo as reference:
	463	+
	464	+**~ Submerged installation:**
	465	+
	466	+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.
	467	+
	468	+[[image:image-20240718191348-6.png]]
	469	+
	470	+**~ Pipeline installation:**
	471	+
	472	+Connect the equipment to the pipeline through the 3/4 thread.
	473	+
	474	+[[image:image-20240718191336-5.png||height="239" width="326"]]
	475	+
	476	+
	477	+== 3.5 Maintenance ==
	478	+
	479	+
	480	+(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.
	481	+
	482	+(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.).
	483	+
	484	+(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.
	485	+
	486	+(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.
	487	+
	488	+(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.
	489	+
	490	+(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
	491	+
	492	+(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.
	493	+
	494	+(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.
	495	+
	496	+(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.
	497	+
	498	+== 3.6 RS485 Commands ==
	499	+
	500	+
	501	+RS485 signaldefault address 0x13
	502	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	503	+
	504	+=== 3.6.1 Query address ===
	505	+
	506	+send
	507	+
	508	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	509	+|=(% 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
	510	+|(% 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
	511	+
	512	+response
	513	+
	514	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	515	+|=(% 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
	516	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	517	+
	518	+=== 3.6.2 Change address ===
	519	+
	520	+For example: Change the address of the sensor with address 1 to 2, master → slave
	521	+
	522	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	523	+|=(% 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
	524	+|(% 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
	525	+
	526	+If the sensor receives correctly, the data is returned along the original path.
	527	+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.
	528	+
	529	+
	530	+=== 3.6.3 Modify intercept ===
	531	+
	532	+send
	533	+
	534	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	535	+|=(% 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
	536	+|(% 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" %)(((
	537	+0X96
	538	+)))
	539	+
	540	+Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	541	+
	542	+response
	543	+
	544	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	545	+|=(% 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
	546	+|(% style="width:99px" %)0X13|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
	547	+0X00
	548	+)))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
	549	+0X96
	550	+)))
	551	+
	552	+=== 3.6.4 Query data ===
	553	+
	554	+
	555	+Query the data (ORP) of the sensor (address 13), host → slave
	556	+
	557	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	558	+|=(% 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
	559	+|(% 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
	560	+
	561	+If the sensor receives correctly, the following data will be returned, slave → host
	562	+
	563	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	564	+|=(% 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
	565	+|(% 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
	566	+
238	238	The query data command is 13 03 00 00 00 01 87 78
239	239
240	240	For example, the returned data is 13 03 02 (% style="color:red" %)**02 AE**(%%) 80 9B.
...	...	@@ -242,31 +242,229 @@
242	242	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
243	243
244	244
	574	+=== 3.6.5 Calibration Method ===
	575	+
	576	+This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	577	+(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	578	+enter the following calibration command, and the 86mV point calibration is completed;
	579	+
	580	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	581	+|=(% 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
	582	+|(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	583	+0X00
	584	+)))|(% style="width:68px" %)0X24|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XCB|(% style="width:55px" %)(((
	585	+0X03
	586	+)))
	587	+
	588	+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.
	589	+
	590	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
	591	+|=(% 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
	592	+|(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	593	+0X00
	594	+)))|(% style="width:68px" %)0X25|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X9A|(% style="width:55px" %)(((
	595	+0XC3
	596	+)))
	597	+
245	245	= 4. DR-DO1 Dissolved Oxygen Sensor =
246	246
247		-== 4.7 RS485 Commands ==
248	248
249	249
250		-The address of the dissolved oxygen sensor is 14
	602	+== 4.1 Specification ==
251	251
252		-The query data command is 14 03 00 14 00 01 C6 CB
253	253
	605	+* **Measuring range**: 0-20mg/L, 0-50℃
	606	+* **Accuracy**: 3%, ±0.5℃
	607	+* **Resolution**: 0.01 mg/L, 0.01℃
	608	+* **Maximum operating pressure**: 6 bar
	609	+* **Output signal**: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	610	+* **Power supply voltage**: 5-24V DC
	611	+* **Working environment**: temperature 0-60℃; humidity <95%RH
	612	+* **Power consumption**: ≤0.5W
	613	+
	614	+== 4.2 wiring ==
	615	+
	616	+[[image:image-20240720172632-4.png||height="390" width="640"]]
	617	+
	618	+
	619	+== (% id="cke_bm_224234S" style="display:none" %) (%%)4.3 Impedance requirements for current signals ==
	620	+
	621	+[[image:image-20240718195414-8.png||height="100" width="575"]]
	622	+
	623	+
	624	+== 4.4 Mechinical Drawing ==
	625	+
	626	+
	627	+[[image:image-20240719155308-1.png||height="226" width="527"]]
	628	+
	629	+
	630	+== 4.5 Instructions for use and maintenance ==
	631	+
	632	+* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	633	+* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	634	+
	635	+== 4.6 RS485 Commands ==
	636	+
	637	+RS485 signaldefault address 0x14
	638	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	639	+
	640	+=== 4.6.1 Query address ===
	641	+
	642	+send
	643	+
	644	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	645	+|=(% 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
	646	+|(% 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
	647	+
	648	+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.
	649	+
	650	+
	651	+response
	652	+
	653	+Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	654	+Register 1 data high and register 1 data low indicate the sensor version
	655	+
	656	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	657	+|=(% 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
	658	+|(% 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
	659	+
	660	+=== 4.6.2 Change address ===
	661	+
	662	+For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
	663	+
	664	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:907.333px" %)
	665	+|=(% 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
	666	+|(% 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
	667	+
	668	+response
	669	+
	670	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	671	+|=(% 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
	672	+|(% 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
	673	+
	674	+=== 4.6.3 Query data ===
	675	+
	676	+
	677	+Query the data (dissolved oxygen) of the sensor (address 14), host → slave
	678	+
	679	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	680	+|=(% 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
	681	+|(% 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
	682	+
	683	+If the sensor receives correctly, the following data will be returned, slave → host
	684	+
	685	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	686	+|=(% 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
	687	+|(% 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
	688	+
254	254	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.
255	255
256	256	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
257	257
258	258
	694	+Query the data (temperature) of the sensor (address 14), host → slave
	695	+
	696	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	697	+|=(% 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
	698	+|(% 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
	699	+
	700	+If the sensor receives correctly, the following data will be returned, slave → host
	701	+
	702	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	703	+|=(% 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
	704	+|(% 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
	705	+
	706	+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.
	707	+
	708	+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℃
	709	+
	710	+
259	259	= 5. DR-TS1 Water Turbidity Sensor =
260	260
261		-== 5.7 RS485 Commands ==
262	262
263	263
264		-The address of the dissolved oxygen sensor is 15
	715	+== (% id="cke_bm_81470S" style="display:none" %) (%%)5.1 Specification ==
265	265
	717	+* **Measuring range**: 0.1～1000.0NTU
	718	+* **Accuracy**: ±5%
	719	+* **Resolution**: 0.1NTU
	720	+* **Stability**: ≤3mV/24 hours
	721	+* **Output signal**: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	722	+* **Power supply voltage**: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
	723	+* **Working environment**: temperature 0～60℃; humidity ≤95%RH
	724	+* **Power consumption**: ≤0.5W
	725	+
	726	+== 5.2 wiring ==
	727	+
	728	+[[image:image-20240720172640-5.png||height="387" width="635"]]
	729	+
	730	+
	731	+== 5.3 Impedance requirements for current signals ==
	732	+
	733	+[[image:image-20240718195414-8.png||height="100" width="575"]]
	734	+
	735	+
	736	+== 5.4 Mechinical Drawing ==
	737	+
	738	+[[image:image-20240718195058-7.png||height="305" width="593"]]
	739	+
	740	+
	741	+== 5.5 Instructions for use and maintenance ==
	742	+
	743	+* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	744	+* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	745	+
	746	+== 5.6 RS485 Commands ==
	747	+
	748	+
	749	+RS485 signaldefault address 0x15
	750	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	751	+
	752	+=== 5.6.1 Query address ===
	753	+
	754	+send
	755	+
	756	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	757	+|=(% 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
	758	+|(% 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
	759	+
	760	+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.
	761	+
	762	+
	763	+response
	764	+
	765	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	766	+|=(% 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
	767	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	768	+
	769	+=== 5.6.2 Change address ===
	770	+
	771	+For example: Change the address of the sensor with address 1 to 2, master → slave
	772	+
	773	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
	774	+|=(% 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
	775	+|(% 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
	776	+
	777	+If the sensor receives correctly, the data is returned along the original path.
	778	+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.
	779	+
	780	+=== 5.6.3 Query data ===
	781	+
	782	+
	783	+Query the data (turbidity) of the sensor (address 15), host → slave
	784	+
	785	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	786	+|=(% 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
	787	+|(% 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
	788	+
	789	+If the sensor receives correctly, the following data will be returned, slave → host
	790	+
	791	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	792	+|=(% 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
	793	+|(% 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
	794	+
266	266	The query data command is 15 03 00 00 00 01 87 1E
267	267
268	268	For example, the returned data is 15 03 02 (% style="color:red" %)**02 9A**(%%) 09 4C
269	269
270	270	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
271		-
272		-

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