Changes for page Water Quality Sensors

Summary

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Details

Page properties

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
	14	+
11	11	* **Power Consumption** : < 0.5W
	16	+
12	12	* **Interface**: RS485. 9600 Baud Rate
	18	+
13	13	* **EC Range & Resolution:**
14	14	** **ECK0.01** : 0.02 ~~ 20 μS/cm
15	15	** **ECK0.1**: 0.2 ~~ 200.0 μS/cm
16	16	** **ECK1.0** : 2 ~~ 2,000 μS/cm  Resolution: 1 μS/cm
17	17	** **ECK10.0** : 20 ~~ 20,000 μS/cm  Resolution: 10 μS/cm
	24	+
18	18	* **EC Accuracy**: ±1% FS
	26	+
19	19	* **Temperature Measure Range**: -20 ~~ 60 °C
	28	+
20	20	* **Temperature Accuracy: **±0.5 °C
	30	+
21	21	* **IP Rated**: IP68
	32	+
22	22	* **Max Pressure**: 0.6MPa
23	23
	35	+
24	24	== 1.2 Application for Different Range ==
25	25
	38	+
26	26	[[image:image-20240714173018-1.png]]
27	27
28	28
...	...	@@ -29,8 +29,12 @@
29	29	== 1.3 Wiring ==
30	30
31	31
	45	+[[image:image-20240720172533-1.png||height="347" width="569"]]
	46	+
	47	+
32	32	== 1.4 Mechinical Drawing ==
33	33
	50	+
34	34	[[image:image-20240714174241-2.png]]
35	35
36	36
...	...	@@ -37,46 +37,53 @@
37	37	== 1.5 Installation ==
38	38
39	39
40		- Do not power on while connect the cables. Double check the wiring before power on.
	57	+**Electrode installation form:**
41	41
42		-Installation Photo as reference:
	59	+A: Side wall installation
43	43
44		-**~ Submerged installation:**
	61	+B: Top flange installation
45	45
46		-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.
	63	+C: Pipeline bend installation
47	47
48		-[[image:image-20240715181933-4.png||height="281" width="258"]]
	65	+D: Pipeline bend installation
49	49
50		-**~ Pipeline installation:**
	67	+E: Flow-through installation
51	51
52		-Connect the equipment to the pipeline through the 3/4 thread.
	69	+F: Submerged installation
53	53
54		-[[image:image-20240715182122-6.png||height="291" width="408"]]
	71	+[[image:image-20240718190121-1.png||height="350" width="520"]]
55	55
56		-**Sampling:**
	73	+**Several common installation methods of electrodes**
57	57
58		-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.
	75	+When installing the sensor on site, you should strictly follow the correct installation method shown in the following picture. Incorrect installation method will cause data deviation.
59	59
60		-**Measure the pH of the water sample:**
	77	+A. Several common incorrect installation methods
61	61
62		-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.
	79	+[[image:image-20240718190204-2.png||height="262" width="487"]]
63	63
	81	+**Error cause:** The electrode joint is too long, the extension part is too short, the sensor is easy to form a dead cavity, resulting in measurement error.
64	64
65		-== 1.6 Maintain ==
	83	+[[image:image-20240718190221-3.png||height="292" width="500"]]
66	66
	85	+**Error cause: **Measurement error or instability may occur due to water flow not being able to fill the pipe or air accumulation at high altitudes.
67	67
68		-* 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!
69		-* 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.
70		-* 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.
71		-* 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.
72		-* 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.
73		-* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
74		-* 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.
75		-* 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.
76		-* (((
77		-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.
78		-)))
	87	+B. Correct installation method
79	79
	89	+[[image:image-20240718190249-4.png||height="287" width="515"]]
	90	+
	91	+
	92	+== 1.6 Maintenance ==
	93	+
	94	+
	95	+* The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
	96	+
	97	+* If the electrode is not used for a long time, it can generally be stored in a dry place, but it must be placed (stored) in distilled water for several hours before use to activate the electrode. Electrodes that are frequently used can be placed (stored) in distilled water.
	98	+
	99	+* Cleaning of conductivity electrodes: Organic stains on the electrode can be cleaned with warm water containing detergent, or with alcohol. Calcium and magnesium precipitates are best cleaned with 10% citric acid. The electrode plate or pole can only be cleaned by chemical methods or by shaking in water. Wiping the electrode plate will damage the coating (platinum black) on the electrode surface.
	100	+
	101	+* The equipment should be calibrated before each use. It is recommended to calibrate it every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.).
	102	+
	103	+
80	80	== 1.7 RS485 Commands ==
81	81
82	82
...	...	@@ -86,71 +86,100 @@
86	86
87	87	=== 1.7.1 Query address ===
88	88
89		-send
90	90
91		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
92		-|=(% 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
93		-|(% 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
	114	+**send:**
94	94
	116	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	117	+|=(% style="width: 74.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity low|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 59.75px;background-color:#4F81BD;color:white" %)CRC16 high
	118	+|(% style="width:99px" %)0XFE |(% style="width:72px" %)0X03|(% style="width:50px" %)0X00|(% style="width:42px" %)0X50|(% style="width:42px" %)0X00|(% style="width:42px" %)0X00|(% style="width:56px" %)0X51|(% style="width:56px" %)0XD4
	119	+
95	95	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.
96	96
97	97
98		-response
	123	+**response:**
99	99
100		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
101		-|=(% 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
102		-|(% style="width:99px" %)0X1|(% style="width:112px" %)0X3|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	125	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
	126	+|=(% style="width: 100px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 110px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	127	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
103	103
	129	+
104	104	=== 1.7.2 Change address ===
105	105
	132	+
106	106	For example: Change the address of the sensor with address 1 to 2, master → slave
107	107
108		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
109		-|=(% 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
110		-|(% 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
	135	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	136	+|=(% style="width: 74.75px; background-color: rgb(79, 129, 189); color: white;" %)Original address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	137	+|(% style="width:67px" %)0X01|(% style="width:76px" %)0X06|(% style="width:60px" %)0X00|(% style="width:50px" %)0X50|(% style="width:50px" %)0X00|(% style="width:50px" %)0X02|(% style="width:57px" %)0X08|(% style="width:56px" %)0X1A
111	111
112	112	If the sensor receives correctly, the data is returned along the original path.
113		-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.
114	114
	141	+(% style="color:red" %)**Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.**
115	115
	143	+
116	116	=== 1.7.3 Modify intercept ===
117	117
118	118
119		-send
	147	+**send:**
120	120
121		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
122		-|=(% 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
123		-|(% 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" %)(((
124		-0X97
	149	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
	150	+|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
	151	+|(% style="width:64px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X23|(% style="width:85px" %)0X00|(% style="width:1px" %)0X01|(% style="width:1px" %)0XF8|(% style="width:1px" %)(((
	152	+0X07
125	125	)))
126	126
127	127	Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
128	128
129		-response
	157	+**response:**
130	130
131		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
132		-|=(% 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
	159	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
	160	+|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64px;background-color:#4F81BD;color:white" %)CRC16 high
133	133	|(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
134	134	0X02
135		-)))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X0A|(% style="width:1px" %)(((
136		-0XE5
	163	+)))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X38|(% style="width:1px" %)(((
	164	+0X8F
137	137	)))
138	138
139	139
140	140	=== 1.7.4 Query data ===
141	141
	170	+
	171	+Query the data (EC,temperature) of the sensor (address 11), host → slave
	172	+
	173	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	174	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	175	+|(% style="width:99px" %)0X11|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0XC6|(% style="width:56px" %)0X9B
	176	+
	177	+If the sensor receives correctly, the following data will be returned, slave → host
	178	+
	179	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	180	+|=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	181	+|(% style="width:99px" %)0X11|(% style="width:72px" %)0X03|(% style="width:68px" %)0X04|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0X01|(% style="width:56px" %)0X64|(% style="width:56px" %)0X8B|(% style="width:56px" %)0XD0
	182	+
142	142	The address of the EC K10 sensor is 11
143	143
144	144	The query data command is 11 03 00 00 00 02 C6 9B
145	145
146		-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
	187	+**For example**, the returned data is 11 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 8B D0. 02 AE is converted to decimal 686,  K=10, EC: 6860uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
147	147
148	148
	190	+Query the data (EC,temperature) of the sensor (address 11), host → slave
	191	+
	192	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	193	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	194	+|(% style="width:99px" %)0X12|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0XC6|(% style="width:56px" %)0XA8
	195	+
	196	+If the sensor receives correctly, the following data will be returned, slave → host
	197	+
	198	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	199	+|=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	200	+|(% style="width:99px" %)0X12|(% style="width:72px" %)0X03|(% style="width:68px" %)0X04|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0X01|(% style="width:56px" %)0X64|(% style="width:56px" %)0XB8|(% style="width:56px" %)0XD0
	201	+
149	149	The address of the EC K1 sensor is 12
150	150
151	151	The query data command is 12 03 00 00 00 02 C6 A8
152	152
153		-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
	206	+**For example**, the returned data is 12 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 B8 D0. 02 AE is converted to decimal 686,  K=1, EC: 686uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
154	154
155	155
156	156	=== 1.7.5 Calibration Method ===
...	...	@@ -158,60 +158,213 @@
158	158
159	159	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.
160	160
161		-The calibration steps are as follows:
	214	+(% style="color:blue" %)**The calibration steps are as follows:**
	215	+
162	162	(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.
163	163
164		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
165		-|=(% 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: 139.083px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
	218	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	219	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
166	166	|(% 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" %)(((
167	167	0X00
168		-
169	169	0X00
170		-
171	171	0X37
172		-
173	173	0X32
174	174	)))|(% style="width:1px" %)0XBD|(% style="width:1px" %)0XFC
175	175
176	176	1413*10 gives 0X00003732
177	177
178		-response
	229	+**response:**
179	179
180		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
181		-|=(% 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
	231	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	232	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
182	182	|(% 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
183	183
184	184	(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
185	185
186		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
187		-|=(% 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: 139.083px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high
	237	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	238	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
188	188	|(% 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" %)(((
189	189	0X00
190		-
191	191	0X01
192		-
193	193	0XF7
194		-
195	195	0X20
196	196	)))|(% style="width:1px" %)0X33|(% style="width:1px" %)0X75
197	197
198	198	12880*10 gives 0X01F720
199	199
200		-response
	248	+**response:**
201	201
202		-(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
203		-|=(% 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
	250	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	251	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
204	204	|(% 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
205	205
206	206
207		-
208	208	= 2. DR-PH01 Water PH Sensor =
209	209
210		-== 2.7 RS485 Commands ==
	257	+== 2.1 Specification ==
211	211
212	212
213		-The address of the pH  sensor is 10
	260	+* **Power Input**: DC7~~30
214	214
	262	+* **Power Consumption** : < 0.5W
	263	+
	264	+* **Interface**: RS485. 9600 Baud Rate
	265	+
	266	+* **pH measurement range**: 0~~14.00pH; resolution: 0.01pH
	267	+
	268	+* **pH measurement error**: ±0.15pH
	269	+
	270	+* **Repeatability error**: ±0.02pH
	271	+
	272	+* **Temperature measurement range**:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
	273	+
	274	+* **Temperature measurement error**: ±0.5°C
	275	+
	276	+* **Temperature Measure Range**: -20 ~~ 60 °C
	277	+
	278	+* **Temperature Accuracy: **±0.5 °C
	279	+
	280	+* **IP Rated**: IP68
	281	+
	282	+* **Max Pressure**: 0.6MPa
	283	+
	284	+
	285	+== 2.2 Wiring ==
	286	+
	287	+
	288	+[[image:image-20240720172548-2.png||height="348" width="571"]]
	289	+
	290	+
	291	+== 2.3 Mechinical Drawing ==
	292	+
	293	+
	294	+[[image:image-20240714174241-2.png]]
	295	+
	296	+
	297	+== 2.4 Installation Notice ==
	298	+
	299	+
	300	+Do not power on while connect the cables. Double check the wiring before power on.
	301	+
	302	+Installation Photo as reference:
	303	+
	304	+(% style="color:blue" %)**Submerged installation:**
	305	+
	306	+The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
	307	+
	308	+[[image:image-20240718191348-6.png]]
	309	+
	310	+(% style="color:blue" %)**Pipeline installation:**
	311	+
	312	+Connect the equipment to the pipeline through the 3/4 thread.
	313	+
	314	+[[image:image-20240718191336-5.png||height="239" width="326"]]
	315	+
	316	+(% style="color:blue" %)**Sampling:**
	317	+
	318	+Take representative water samples according to sampling requirements. If it is inconvenient to take samples, you can also put the electrode into the solution to be tested and read the output data. After a period of time, take out the electrode and clean it.
	319	+
	320	+(% style="color:blue" %)**Measure the pH of the water sample:**
	321	+
	322	+First rinse the electrode with distilled water, then rinse it with the water sample, then immerse the electrode in the sample, carefully shake the test cup or stir it to accelerate the electrode balance, let it stand, and record the pH value when the reading is stable.
	323	+
	324	+
	325	+== 2.5 Maintenance ==
	326	+
	327	+
	328	+* The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself. Contact us as soon as possible!
	329	+
	330	+* There is an appropriate amount of soaking solution in the protective bottle at the front end of the electrode. The electrode head is soaked in it to keep the glass bulb and the liquid junction activated. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
	331	+
	332	+* Preparation of electrode soaking solution: Take a packet of PH4.00 buffer, dissolve it in 250 ml of pure water, and soak it in 3M potassium chloride solution. The preparation is as follows: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water.
	333	+
	334	+* The glass bulb at the front end of the electrode cannot come into contact with hard objects. Any damage and scratches will make the electrode ineffective.
	335	+
	336	+* Before measurement, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
	337	+
	338	+* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
	339	+
	340	+* After long-term use, the pH electrode will become passivated, which is characterized by a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the bulb at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours. If the pH electrode is seriously passivated and soaking in 0.1M hydrochloric acid has no effect, the pH electrode bulb can be soaked in 4% HF (hydrofluoric acid) for 3-5 seconds, washed with pure water, and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
	341	+
	342	+* Glass bulb contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant.
	343	+
	344	+* The equipment should be calibrated before each use. For long-term use, it is recommended to calibrate once every 3 months. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
	345	+
	346	+
	347	+== 2.6 RS485 Commands ==
	348	+
	349	+
	350	+RS485 signaldefault address 0x10
	351	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	352	+
	353	+
	354	+=== 2.6.1 Query address ===
	355	+
	356	+
	357	+**send:**
	358	+
	359	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	360	+|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
	361	+|(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4
	362	+
	363	+**response:**
	364	+
	365	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	366	+|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	367	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	368	+
	369	+=== 2.6.2 Change address ===
	370	+
	371	+
	372	+For example: Change the address of the sensor with address 1 to 2, master → slave
	373	+
	374	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	375	+|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
	376	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
	377	+
	378	+If the sensor receives correctly, the data is returned along the original path.
	379	+
	380	+(% style="color:red" %)**Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.**
	381	+
	382	+
	383	+=== 2.6.3 Modify intercept ===
	384	+
	385	+
	386	+**send:**
	387	+
	388	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	389	+|=(% style="width: 44.75px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address  low|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high|=(% style="width: 69.75px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	390	+|(% style="width:71px" %)0X10|(% style="width:74px" %)0X06|(% style="width:67px" %)0X00|(% style="width:68px" %)0X10|(% style="width:69px" %)0X00|(% style="width:66px" %)0X64|(% style="width:57px" %)0X8A|(% style="width:57px" %)(((
	391	+0XA5
	392	+)))
	393	+
	394	+Change the intercept of the sensor at address 10 to 1 (default is 0). You need to pass the intercept 1*100 =100 into the command 0x006.
	395	+
	396	+**response:**
	397	+
	398	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	399	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
	400	+|(% style="width:99px" %)0X10|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
	401	+0X00
	402	+)))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
	403	+0XA5
	404	+)))
	405	+
	406	+=== 2.6.4 Query data ===
	407	+
	408	+
	409	+Query the data (PH) of the sensor (address 10), host → slave
	410	+
	411	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	412	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	413	+|(% style="width:99px" %)0X10|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X4B
	414	+
	415	+If the sensor receives correctly, the following data will be returned, slave → host
	416	+
	417	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	418	+|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	419	+|(% style="width:99px" %)0X10|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0XC4|(% style="width:56px" %)0X9B
	420	+
215	215	The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
216	216
217	217	For example, the returned data is 10 03 02 (% style="color:red" %)**02 AE**(%%) C4 9B.
...	...	@@ -219,13 +219,201 @@
219	219	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.
220	220
221	221
	428	+=== 2.6.5 Calibration Method ===
	429	+
	430	+
	431	+This device uses three-point calibration, and three known pH standard solutions need to be prepared.
	432	+
	433	+(% style="color:blue" %)**The calibration steps are as follows:**
	434	+
	435	+(1) Place the electrode in distilled water to clean it, and then place it in 9.18 standard buffer solution. After the data stabilizes, enter the following calibration command, and the 9.18 calibration is completed.
	436	+
	437	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	438	+|=(% style="width: 61px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	439	+|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	440	+0X00
	441	+)))|(% style="width:68px" %)0X20|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X8A|(% style="width:55px" %)(((
	442	+0XF1
	443	+)))
	444	+
	445	+(2) Wash the electrode in distilled water and place it in 6.86 standard buffer. After the data stabilizes, enter the following calibration command. The 6.86 calibration is completed.
	446	+
	447	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	448	+|=(% style="width: 61px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	449	+|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	450	+0X00
	451	+)))|(% style="width:68px" %)0X21|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XDB|(% style="width:55px" %)(((
	452	+0X31
	453	+)))
	454	+
	455	+(3) Wash the electrode in distilled water and place it in 4.01 standard buffer. After the data stabilizes, enter the following calibration command, and the 4.00 calibration is completed.
	456	+
	457	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	458	+|=(% style="width: 61px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	459	+|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	460	+0X00
	461	+)))|(% style="width:68px" %)0X22|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X2B|(% style="width:55px" %)(((
	462	+0X31
	463	+)))
	464	+
	465	+After the above three steps are completed, the calibration is successful. The advantage of three-point calibration compared to two-point calibration is that the electrode is calibrated separately in the acid and alkali parts, thereby achieving accurate calibration of the full range and making the measurement data more accurate.
	466	+
	467	+
222	222	= 3. DR-ORP1 Water ORP Sensor =
223	223
224		-== 3.7 RS485 Commands ==
	470	+== 3.1 Specification ==
225	225
226	226
227		-The address of the ORP sensor is 13
	473	+* **Power Input**: DC7~~30
228	228
	475	+* **Measuring range**:** **-1999~~1999mV
	476	+
	477	+* **Resolution**: 1mV
	478	+
	479	+* **Interface**: RS485. 9600 Baud Rate
	480	+
	481	+* **Measurement error**: ±3mV
	482	+
	483	+* **Stability**: ≤2mv/24 hours
	484	+
	485	+* **Equipment working conditions**: Ambient temperature: 0-60°C Relative humidity: <85%RH
	486	+
	487	+* **IP Rated**: IP68
	488	+
	489	+* **Max Pressure**: 0.6MPa
	490	+
	491	+
	492	+== 3.2 Wiring ==
	493	+
	494	+
	495	+[[image:image-20240720172620-3.png||height="378" width="620"]]
	496	+
	497	+
	498	+== 3.3 Mechinical Drawing ==
	499	+
	500	+
	501	+[[image:image-20240714174241-2.png]]
	502	+
	503	+
	504	+== 3.4 Installation Notice ==
	505	+
	506	+
	507	+Do not power on while connect the cables. Double check the wiring before power on.
	508	+
	509	+**Installation Photo as reference:**
	510	+
	511	+(% style="color:blue" %)** Submerged installation:**
	512	+
	513	+The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded.
	514	+
	515	+[[image:image-20240718191348-6.png]]
	516	+
	517	+(% style="color:blue" %)** Pipeline installation:**
	518	+
	519	+Connect the equipment to the pipeline through the 3/4 thread.
	520	+
	521	+[[image:image-20240718191336-5.png||height="239" width="326"]]
	522	+
	523	+
	524	+== 3.5 Maintenance ==
	525	+
	526	+
	527	+(1) The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible.
	528	+
	529	+(2) In general, ORP electrodes do not need to be calibrated and can be used directly. When there is doubt about the quality and test results of the ORP electrode, the electrode potential can be checked with an ORP standard solution to determine whether the ORP electrode meets the measurement requirements, and the electrode can be recalibrated or replaced with a new ORP electrode. The frequency of calibration or inspection of the measuring electrode depends on different application conditions (the degree of dirt in the application, the deposition of chemical substances, etc.).
	530	+
	531	+(3) There is an appropriate soaking solution in the protective bottle at the front end of the electrode, and the electrode head is soaked in it to ensure the activation of the platinum sheet and the liquid junction. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
	532	+
	533	+(4) Preparation of electrode soaking solution: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water to prepare a 3.3M potassium chloride solution.
	534	+
	535	+(5) Before measuring, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response.
	536	+
	537	+(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
	538	+
	539	+(7) After long-term use, the ORP electrode will be passivated, which is manifested as a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the platinum sheet at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance.
	540	+
	541	+(8) Electrode contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant. If the platinum of the electrode is severely contaminated and an oxide film is formed, toothpaste can be applied to the platinum surface and then gently scrubbed to restore the platinum's luster.
	542	+
	543	+(9) The equipment should be calibrated before each use. It is recommended to calibrate once every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
	544	+
	545	+
	546	+== 3.6 RS485 Commands ==
	547	+
	548	+
	549	+RS485 signaldefault address 0x13
	550	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	551	+
	552	+
	553	+=== 3.6.1 Query address ===
	554	+
	555	+
	556	+**send:**
	557	+
	558	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	559	+|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
	560	+|(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4
	561	+
	562	+
	563	+**response:**
	564	+
	565	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	566	+|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	567	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	568	+
	569	+
	570	+=== 3.6.2 Change address ===
	571	+
	572	+
	573	+For example: Change the address of the sensor with address 1 to 2, master → slave
	574	+
	575	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	576	+|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
	577	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
	578	+
	579	+If the sensor receives correctly, the data is returned along the original path.
	580	+
	581	+(% style="color:red" %)**Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.**
	582	+
	583	+
	584	+=== 3.6.3 Modify intercept ===
	585	+
	586	+
	587	+**send:**
	588	+
	589	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	590	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address  low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register Length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register Length low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
	591	+|(% style="width:99px" %)0X13|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
	592	+0X96
	593	+)))
	594	+
	595	+Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
	596	+
	597	+**response:**
	598	+
	599	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	600	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width:68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 68px;background-color:#4F81BD;color:white" %)CRC16 high
	601	+|(% style="width:99px" %)0X13|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
	602	+0X00
	603	+)))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
	604	+0X96
	605	+)))
	606	+
	607	+
	608	+=== 3.6.4 Query data ===
	609	+
	610	+
	611	+Query the data (ORP) of the sensor (address 13), host → slave
	612	+
	613	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	614	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	615	+|(% style="width:99px" %)0X13|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X78
	616	+
	617	+If the sensor receives correctly, the following data will be returned, slave → host
	618	+
	619	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	620	+|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	621	+|(% style="width:99px" %)0X13|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X02|(% style="width:72px" %)0XAE|(% style="width:56px" %)0X80|(% style="width:56px" %)0X9B
	622	+
229	229	The query data command is 13 03 00 00 00 01 87 78
230	230
231	231	For example, the returned data is 13 03 02 (% style="color:red" %)**02 AE**(%%) 80 9B.
...	...	@@ -233,31 +233,267 @@
233	233	02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
234	234
235	235
	630	+=== 3.6.5 Calibration Method ===
	631	+
	632	+
	633	+This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
	634	+(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
	635	+enter the following calibration command, and the 86mV point calibration is completed;
	636	+
	637	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	638	+|=(% style="width: 42px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	639	+|(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	640	+0X00
	641	+)))|(% style="width:68px" %)0X24|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XCB|(% style="width:55px" %)(((
	642	+0X03
	643	+)))
	644	+
	645	+Wash the electrode in distilled water and place it in 256mV standard buffer. After the data is stable, enter the following calibration command to complete the 256mV point calibration.
	646	+
	647	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	648	+|=(% style="width: 42px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	649	+|(% style="width:68px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
	650	+0X00
	651	+)))|(% style="width:68px" %)0X25|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X9A|(% style="width:55px" %)(((
	652	+0XC3
	653	+)))
	654	+
236	236	= 4. DR-DO1 Dissolved Oxygen Sensor =
237	237
238		-== 4.7 RS485 Commands ==
	657	+== 4.1 Specification ==
239	239
240	240
241		-The address of the dissolved oxygen sensor is 14
	660	+* **Measuring range**: 0-20mg/L, 0-50°C
242	242
243		-The query data command is 14 03 00 14 00 01 C6 CB
	662	+* **Accuracy**: 3%, ±0.5°C
244	244
	664	+* **Resolution**: 0.01 mg/L, 0.01°C
	665	+
	666	+* **Maximum operating pressure**: 6 bar
	667	+
	668	+* **Output signal**: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	669	+
	670	+* **Power supply voltage**: 5-24V DC
	671	+
	672	+* **Working environment**: temperature 0-60°C; humidity <95%RH
	673	+
	674	+* **Power consumption**: ≤0.5W
	675	+
	676	+== 4.2 wiring ==
	677	+
	678	+
	679	+[[image:image-20240720172632-4.png||height="390" width="640"]]
	680	+
	681	+
	682	+== 4.3 Impedance requirements for current signals ==
	683	+
	684	+
	685	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
	686	+|=(% style="width: 140px" %)Supply Voltage|=(% style="width: 70px;" %)9V|=(% style="width: 70px;" %)**12V**|=(% style="width: 70px;" %)**20V**|=(% style="width: 70px;" %)**24V**
	687	+|(% style="width:137px" %)**Max Impedance**|(% style="width:70px" %)**<250Ω**|(% style="width:68px" %)**<400Ω**|(% style="width:68px" %)**<500Ω**|(% style="width:70px" %)**<900Ω**
	688	+
	689	+[[image:image-20240718195414-8.png||height="100" width="575"]]
	690	+
	691	+
	692	+== 4.4 Mechinical Drawing ==
	693	+
	694	+
	695	+[[image:image-20240719155308-1.png||height="226" width="527"]]
	696	+
	697	+
	698	+== 4.5 Instructions for use and maintenance ==
	699	+
	700	+
	701	+* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	702	+
	703	+* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	704	+
	705	+
	706	+== 4.6 RS485 Commands ==
	707	+
	708	+
	709	+RS485 signaldefault address 0x14
	710	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	711	+
	712	+
	713	+=== 4.6.1 Query address ===
	714	+
	715	+
	716	+**send:**
	717	+
	718	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	719	+|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register address high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register address low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	720	+|(% style="width:99px" %)0XFF|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0XF1|(% style="width:56px" %)0XD7
	721	+
	722	+If you forget the original address of the sensor, you can use the broadcast address 0XFF instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
	723	+
	724	+
	725	+**response:**
	726	+
	727	+Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
	728	+Register 1 data high and register 1 data low indicate the sensor version
	729	+
	730	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	731	+|=(% style="width: 40px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data high|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)Register 1 Data low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 59.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	732	+|(% style="width:99px" %)0XFF|(% style="width:72px" %)0X03|(% style="width:64px" %)0X04|(% style="width:68px" %)0X00|(% style="width:70px" %)0X01|(% style="width:72px" %)0X00|(% style="width:56px" %)0X00|(% style="width:56px" %)0XB4|(% style="width:56px" %)0X3C
	733	+
	734	+=== 4.6.2 Change address ===
	735	+
	736	+
	737	+For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
	738	+
	739	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	740	+|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Original address|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Start address high|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Start address low|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)Sensor version|=(% style="width: 39px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high|=(% style="width: 39px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low
	741	+|(% style="width:67px" %)0X01|(% style="width:71px" %)0X10|(% style="width:65px" %)0X00|(% style="width:65px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:53px" %)0X04|(% style="width:53px" %)0X00|(% style="width:72px" %)0X02|(% style="width:53px" %)0X00|(% style="width:53px" %)0X00|(% style="width:56px" %)0XD2|(% style="width:53px" %)0X10
	742	+
	743	+**response:**
	744	+
	745	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	746	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	747	+|(% style="width:99px" %)0X01|(% style="width:72px" %)0X10|(% style="width:64px" %)0X00|(% style="width:68px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0X61|(% style="width:56px" %)0XCA
	748	+
	749	+
	750	+=== 4.6.3 Query data ===
	751	+
	752	+
	753	+Query the data (dissolved oxygen) of the sensor (address 14), host → slave
	754	+
	755	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	756	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	757	+|(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X14|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0XC6|(% style="width:56px" %)0XCB
	758	+
	759	+If the sensor receives correctly, the following data will be returned, slave → host
	760	+
	761	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	762	+|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	763	+|(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X03|(% style="width:72px" %)0X78|(% style="width:56px" %)0XB5|(% style="width:56px" %)0X55
	764	+
245	245	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.
246	246
247	247	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
248	248
249	249
	770	+Query the data (temperature) of the sensor (address 14), host → slave
	771	+
	772	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	773	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	774	+|(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X11|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0XD6|(% style="width:56px" %)0XCA
	775	+
	776	+If the sensor receives correctly, the following data will be returned, slave → host
	777	+
	778	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	779	+|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	780	+|(% style="width:99px" %)0X14|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X09|(% style="width:72px" %)0XA4|(% style="width:56px" %)0XB2|(% style="width:56px" %)0X6C
	781	+
	782	+After the query, 7 bytes will be returned. For example, the returned data is 14 03 02 (% style="color:red" %)**09 A4**(%%) B2 6C. 03 78 is the value of dissolved oxygen temperature.
	783	+
	784	+Converted to decimal, it is 2468. Add two decimal places to get the actual value. 09 A4 means the current dissolved oxygen temperature is 24.68°C
	785	+
	786	+
250	250	= 5. DR-TS1 Water Turbidity Sensor =
251	251
252		-== 5.7 RS485 Commands ==
	789	+== 5.1 Specification ==
253	253
254	254
255		-The address of the dissolved oxygen sensor is 15
	792	+* **Measuring range**: 0.11000.0NTU
256	256
	794	+* **Accuracy**: ±5%
	795	+
	796	+* **Resolution**: 0.1NTU
	797	+
	798	+* **Stability**: ≤3mV/24 hours
	799	+
	800	+* **Output signal**: A: 420 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	801	+
	802	+* **Power supply voltage**: 524V DC (when output signal is RS485)1224V DC (when output signal is 420mA)
	803	+
	804	+* **Working environment**: temperature 060°C; humidity ≤ 95%RH
	805	+
	806	+* **Power consumption**: ≤ 0.5W
	807	+
	808	+== 5.2 wiring ==
	809	+
	810	+
	811	+[[image:image-20240720172640-5.png||height="387" width="635"]]
	812	+
	813	+
	814	+== 5.3 Impedance requirements for current signals ==
	815	+
	816	+
	817	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
	818	+|=(% style="width: 140px" %)Supply Voltage|=(% style="width: 70px;" %)9V|=(% style="width: 70px;" %)**12V**|=(% style="width: 70px;" %)**20V**|=(% style="width: 70px;" %)**24V**
	819	+|(% style="width:137px" %)**Max Impedance**|(% style="width:70px" %)**<250Ω**|(% style="width:68px" %)**<400Ω**|(% style="width:68px" %)**<500Ω**|(% style="width:70px" %)**<900Ω**
	820	+
	821	+
	822	+== 5.4 Mechinical Drawing ==
	823	+
	824	+
	825	+[[image:image-20240718195058-7.png||height="305" width="593"]]
	826	+
	827	+
	828	+== 5.5 Instructions for use and maintenance ==
	829	+
	830	+
	831	+* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	832	+
	833	+* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	834	+
	835	+== 5.6 RS485 Commands ==
	836	+
	837	+
	838	+RS485 signaldefault address 0x15
	839	+Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
	840	+
	841	+
	842	+=== 5.6.1 Query address ===
	843	+
	844	+
	845	+**send:**
	846	+
	847	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	848	+|=(% style="width: 80.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 54.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 58.75px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	849	+|(% style="width:99px" %)0XFE |(% style="width:64.75px" %)0X03|(% style="width:64px" %)0X00|(% style="width:64.75px" %)0X50|(% style="width:70px" %)0X00|(% style="width:72px" %)0X00|(% style="width:56px" %)0X51|(% style="width:56px" %)0XD4
	850	+
	851	+If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query.
	852	+
	853	+
	854	+**response:**
	855	+
	856	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	857	+|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	858	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	859	+
	860	+=== 5.6.2 Change address ===
	861	+
	862	+
	863	+For example: Change the address of the sensor with address 1 to 2, master → slave
	864	+
	865	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	866	+|=(% style="width: 80.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 54.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 58.75px;background-color:#4F81BD;color:white" %)CRC16 high
	867	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
	868	+
	869	+If the sensor receives correctly, the data is returned along the original path.
	870	+
	871	+(% style="color:red" %)**Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query.**
	872	+
	873	+
	874	+=== 5.6.3 Query data ===
	875	+
	876	+
	877	+Query the data (turbidity) of the sensor (address 15), host → slave
	878	+
	879	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	880	+|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	881	+|(% style="width:99px" %)0X15|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X1E
	882	+
	883	+If the sensor receives correctly, the following data will be returned, slave → host
	884	+
	885	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
	886	+|=(% style="width: 44px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data high|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)Register 0 Data low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 79px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	887	+|(% style="width:99px" %)0X15|(% style="width:72px" %)0X03|(% style="width:68px" %)0X02|(% style="width:70px" %)0X02|(% style="width:72px" %)0X9A|(% style="width:56px" %)0X09|(% style="width:56px" %)0X4C
	888	+
257	257	The query data command is 15 03 00 00 00 01 87 1E
258	258
259	259	For example, the returned data is 15 03 02 (% style="color:red" %)**02 9A**(%%) 09 4C
260	260
261	261	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
262		-
263		-

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