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Changes for page Water Quality Sensors

Last modified by Karry Zhuang on 2025/07/18 16:37
From version 45.33
edited by Xiaoling
on 2024/08/06 11:30
Change comment: There is no comment for this version
To version 17.1
edited by Karry Zhuang
on 2024/07/18 18:58
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.karry
Content
... ... @@ -3,13 +3,10 @@
3 3  {{toc/}}
4 4  
5 5  
6 -
7 -
8 8  = 1. DR-ECK Water EC Probe =
9 9  
10 10  == 1.1 Specification: ==
11 11  
12 -
13 13  * **Power Input**: DC7~~30
14 14  * **Power Consumption** : < 0.5W
15 15  * **Interface**: RS485. 9600 Baud Rate
... ... @@ -24,10 +24,8 @@
24 24  * **IP Rated**: IP68
25 25  * **Max Pressure**: 0.6MPa
26 26  
27 -
28 28  == 1.2 Application for Different Range ==
29 29  
30 -
31 31  [[image:image-20240714173018-1.png]]
32 32  
33 33  
... ... @@ -34,12 +34,8 @@
34 34  == 1.3 Wiring ==
35 35  
36 36  
37 -[[image:image-20240720172533-1.png||height="347" width="569"]]
38 -
39 -
40 40  == 1.4 Mechinical Drawing ==
41 41  
42 -
43 43  [[image:image-20240714174241-2.png]]
44 44  
45 45  
... ... @@ -46,50 +46,46 @@
46 46  == 1.5 Installation ==
47 47  
48 48  
49 -**Electrode installation form:**
40 + Do not power on while connect the cables. Double check the wiring before power on.
50 50  
51 -A: Side wall installation
42 +Installation Photo as reference:
52 52  
53 -B: Top flange installation
44 +**~ Submerged installation:**
54 54  
55 -C: Pipeline bend installation
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.
56 56  
57 -D: Pipeline bend installation
48 +[[image:image-20240715181933-4.png||height="281" width="258"]]
58 58  
59 -E: Flow-through installation
50 +**~ Pipeline installation:**
60 60  
61 -F: Submerged installation
52 +Connect the equipment to the pipeline through the 3/4 thread.
62 62  
63 -[[image:image-20240718190121-1.png||height="350" width="520"]]
54 +[[image:image-20240715182122-6.png||height="291" width="408"]]
64 64  
65 -**Several common installation methods of electrodes**
56 +**Sampling:**
66 66  
67 -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.
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.
68 68  
69 -A. Several common incorrect installation methods
60 +**Measure the pH of the water sample:**
70 70  
71 -[[image:image-20240718190204-2.png||height="262" width="487"]]
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.
72 72  
73 -**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.
74 74  
75 -[[image:image-20240718190221-3.png||height="292" width="500"]]
65 +== 1.6 Maintain ==
76 76  
77 -**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 78  
79 -B. Correct installation method
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 +)))
80 80  
81 -[[image:image-20240718190249-4.png||height="287" width="515"]]
82 -
83 -
84 -== 1.6 Maintenance ==
85 -
86 -
87 -* 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.
88 -* 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.
89 -* 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.
90 -* 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.).
91 -
92 -
93 93  == 1.7 RS485 Commands ==
94 94  
95 95  
... ... @@ -99,46 +99,42 @@
99 99  
100 100  === 1.7.1 Query address ===
101 101  
89 +send
102 102  
103 -**send**
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
104 104  
105 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
106 -|=(% style="width: 74px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 66px; 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: 70px; 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
107 -|(% 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
108 -
109 109  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.
110 110  
111 111  
112 -**response**
98 +response
113 113  
114 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:512px" %)
115 -|=(% 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
116 -|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
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
117 117  
118 -
119 119  === 1.7.2 Change address ===
120 120  
121 -
122 122  For example: Change the address of the sensor with address 1 to 2, master → slave
123 123  
124 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
125 -|=(% style="width: 75px; background-color: rgb(79, 129, 189); color: white;" %)Original address|=(% style="width: 65px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 65px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 71px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 71px; 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: 54px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
126 -|(% 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
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
127 127  
128 128  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.
129 129  
130 -(% 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.**
131 131  
132 -
133 133  === 1.7.3 Modify intercept ===
134 134  
135 135  
136 136  send
137 137  
138 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
139 -|=(% 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: 50px; 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
140 -|(% 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" %)(((
141 -0X07
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
142 142  )))
143 143  
144 144  Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
... ... @@ -145,53 +145,29 @@
145 145  
146 146  response
147 147  
148 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
149 -|=(% 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: 50px; 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
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
150 150  |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
151 151  0X02
152 -)))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X38|(% style="width:1px" %)(((
153 -0X8F
135 +)))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X0A|(% style="width:1px" %)(((
136 +0XE5
154 154  )))
155 155  
139 +
156 156  === 1.7.4 Query data ===
157 157  
158 -
159 -Query the data (EC,temperature) of the sensor (address 11), host → slave
160 -
161 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
162 -|=(% 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
163 -|(% 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
164 -
165 -If the sensor receives correctly, the following data will be returned, slave → host
166 -
167 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
168 -|=(% 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
169 -|(% 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
170 -
171 171  The address of the EC K10 sensor is 11
172 172  
173 173  The query data command is 11 03 00 00 00 02 C6 9B
174 174  
175 -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.
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
176 176  
177 177  
178 -Query the data (EC,temperature) of the sensor (address 11), host → slave
179 -
180 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
181 -|=(% 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
182 -|(% 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
183 -
184 -If the sensor receives correctly, the following data will be returned, slave → host
185 -
186 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
187 -|=(% 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
188 -|(% 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
189 -
190 190  The address of the EC K1 sensor is 12
191 191  
192 192  The query data command is 12 03 00 00 00 02 C6 A8
193 193  
194 -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.
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
195 195  
196 196  
197 197  === 1.7.5 Calibration Method ===
... ... @@ -202,7 +202,7 @@
202 202  The calibration steps are as follows:
203 203  (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.
204 204  
205 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
164 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
206 206  |=(% 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
207 207  |(% 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" %)(((
208 208  0X00
... ... @@ -218,13 +218,13 @@
218 218  
219 219  response
220 220  
221 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
180 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
222 222  |=(% 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
223 223  |(% 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
224 224  
225 225  (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
226 226  
227 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
186 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
228 228  |=(% 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
229 229  |(% 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" %)(((
230 230  0X00
... ... @@ -240,7 +240,7 @@
240 240  
241 241  response
242 242  
243 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
202 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
244 244  |=(% 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
245 245  |(% 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
246 246  
... ... @@ -248,143 +248,11 @@
248 248  
249 249  = 2. DR-PH01 Water PH Sensor =
250 250  
251 -== 2.1 Specification ==
210 +== 2.7 RS485 Commands ==
252 252  
253 253  
254 -* **Power Input**: DC7~~30
255 -* **Power Consumption** : < 0.5W
256 -* **Interface**: RS485. 9600 Baud Rate
257 -* **pH measurement range**: 0~~14.00pH; resolution: 0.01pH
258 -* **pH measurement error**:±0.15pH
259 -* **Repeatability error**:±0.02pH
260 -* **Temperature measurement range**:0~~60℃; resolution: 0.1℃ (set temperature for manual temperature compensation, default 25℃)
261 -* **Temperature measurement error**: ±0.5℃
262 -* **Temperature Measure Range**: -20 ~~ 60 °C
263 -* **Temperature Accuracy: **±0.5 °C
264 -* **IP Rated**: IP68
265 -* **Max Pressure**: 0.6MPa
213 +The address of the pH  sensor is 10
266 266  
267 -== 2.2 Wiring ==
268 -
269 -[[image:image-20240720172548-2.png||height="348" width="571"]]
270 -
271 -
272 -== (% style="color:inherit; font-family:inherit" %)2.3 (% style="color:inherit; font-family:inherit; font-size:26px" %)Mechinical Drawing(%%) ==
273 -
274 -[[image:image-20240714174241-2.png]]
275 -
276 -
277 -== 2.4 Installation Notice ==
278 -
279 -Do not power on while connect the cables. Double check the wiring before power on.
280 -
281 -Installation Photo as reference:
282 -
283 -**~ Submerged installation:**
284 -
285 -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.
286 -
287 -[[image:image-20240718191348-6.png]]
288 -
289 -**~ Pipeline installation:**
290 -
291 -Connect the equipment to the pipeline through the 3/4 thread.
292 -
293 -[[image:image-20240718191336-5.png||height="239" width="326"]]
294 -
295 -**Sampling:**
296 -
297 -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.
298 -
299 -**Measure the pH of the water sample:**
300 -
301 -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.
302 -
303 -
304 -== 2.5 Maintenance ==
305 -
306 -
307 -* 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!
308 -* 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.
309 -* 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.
310 -* 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.
311 -* 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.
312 -* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
313 -* 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.
314 -* 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.
315 -* (((
316 -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.
317 -)))
318 -
319 -== 2.6 RS485 Commands ==
320 -
321 -RS485 signaldefault address 0x10
322 -Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
323 -
324 -=== 2.6.1 Query address ===
325 -
326 -send
327 -
328 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
329 -|=(% 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
330 -|(% 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
331 -
332 -response
333 -
334 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
335 -|=(% 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
336 -|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
337 -
338 -=== 2.6.2 Change address ===
339 -
340 -For example: Change the address of the sensor with address 1 to 2, master → slave
341 -
342 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
343 -|=(% 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
344 -|(% 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
345 -
346 -If the sensor receives correctly, the data is returned along the original path.
347 -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.
348 -
349 -
350 -=== 2.6.3 Modify intercept ===
351 -
352 -
353 -send
354 -
355 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:570.333px" %)
356 -|=(% 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
357 -|(% 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" %)(((
358 -0XA5
359 -)))
360 -
361 -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.
362 -
363 -response
364 -
365 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
366 -|=(% 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
367 -|(% style="width:99px" %)0X10|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
368 -0X00
369 -)))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
370 -0XA5
371 -)))
372 -
373 -=== 2.6.4 Query data ===
374 -
375 -
376 -Query the data (PH) of the sensor (address 10), host → slave
377 -
378 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
379 -|=(% 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
380 -|(% 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
381 -
382 -If the sensor receives correctly, the following data will be returned, slave → host
383 -
384 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
385 -|=(% 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
386 -|(% 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
387 -
388 388  The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned.
389 389  
390 390  For example, the returned data is 10 03 02 (% style="color:red" %)**02 AE**(%%) C4 9B.
... ... @@ -392,177 +392,13 @@
392 392  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.
393 393  
394 394  
395 -=== 2.6.5 Calibration Method ===
396 -
397 -
398 -This device uses three-point calibration, and three known pH standard solutions need to be prepared.
399 -The calibration steps are as follows:
400 -(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.
401 -
402 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
403 -|=(% 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
404 -|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
405 -0X00
406 -)))|(% style="width:68px" %)0X20|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X8A|(% style="width:55px" %)(((
407 -0XF1
408 -)))
409 -
410 -(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.
411 -
412 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
413 -|=(% 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
414 -|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
415 -0X00
416 -)))|(% style="width:68px" %)0X21|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XDB|(% style="width:55px" %)(((
417 -0X31
418 -)))
419 -
420 -(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.
421 -
422 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
423 -|=(% 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
424 -|(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
425 -0X00
426 -)))|(% style="width:68px" %)0X22|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X2B|(% style="width:55px" %)(((
427 -0X31
428 -)))
429 -
430 -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.
431 -
432 -
433 433  = 3. DR-ORP1 Water ORP Sensor =
434 434  
224 +== 3.7 RS485 Commands ==
435 435  
436 -== 3.1 Specification ==
437 437  
438 -* **Power Input**: DC7~~30
439 -* **Measuring range**:** **-1999~~1999mV
440 -**Resolution**: 1mV
441 -* **Interface**: RS485. 9600 Baud Rate
442 -* **Measurement error**: ±3mV
443 -* **Stability**: ≤2mv/24 hours
444 -* **Equipment working conditions**: Ambient temperature: 0-60℃ Relative humidity: <85%RH
445 -* **IP Rated**: IP68
446 -* **Max Pressure**: 0.6MPa
227 +The address of the ORP sensor is 13
447 447  
448 -== 3.2 Wiring ==
449 -
450 -[[image:image-20240720172620-3.png||height="378" width="620"]]
451 -
452 -
453 -== 3.3 Mechinical Drawing ==
454 -
455 -[[image:image-20240714174241-2.png]]
456 -
457 -== 3.4 Installation Notice ==
458 -
459 -Do not power on while connect the cables. Double check the wiring before power on.
460 -
461 -Installation Photo as reference:
462 -
463 -**~ Submerged installation:**
464 -
465 -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.
466 -
467 -[[image:image-20240718191348-6.png]]
468 -
469 -**~ Pipeline installation:**
470 -
471 -Connect the equipment to the pipeline through the 3/4 thread.
472 -
473 -[[image:image-20240718191336-5.png||height="239" width="326"]]
474 -
475 -
476 -== 3.5 Maintenance ==
477 -
478 -
479 -(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.
480 -
481 -(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.).
482 -
483 -(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.
484 -
485 -(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.
486 -
487 -(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.
488 -
489 -(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
490 -
491 -(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.
492 -
493 -(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.
494 -
495 -(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.
496 -
497 -== 3.6 RS485 Commands ==
498 -
499 -
500 -RS485 signaldefault address 0x13
501 -Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
502 -
503 -=== 3.6.1 Query address ===
504 -
505 -send
506 -
507 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
508 -|=(% 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
509 -|(% 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
510 -
511 -response
512 -
513 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
514 -|=(% 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
515 -|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
516 -
517 -=== 3.6.2 Change address ===
518 -
519 -For example: Change the address of the sensor with address 1 to 2, master → slave
520 -
521 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
522 -|=(% 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
523 -|(% 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
524 -
525 -If the sensor receives correctly, the data is returned along the original path.
526 -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.
527 -
528 -
529 -=== 3.6.3 Modify intercept ===
530 -
531 -send
532 -
533 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
534 -|=(% 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
535 -|(% 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" %)(((
536 -0X96
537 -)))
538 -
539 -Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command.
540 -
541 -response
542 -
543 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
544 -|=(% 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
545 -|(% style="width:99px" %)0X13|(% style="width:112px" %)0X06|(% style="width:135px" %)(((
546 -0X00
547 -)))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)(((
548 -0X96
549 -)))
550 -
551 -=== 3.6.4 Query data ===
552 -
553 -
554 -Query the data (ORP) of the sensor (address 13), host → slave
555 -
556 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
557 -|=(% 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
558 -|(% 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
559 -
560 -If the sensor receives correctly, the following data will be returned, slave → host
561 -
562 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
563 -|=(% 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
564 -|(% 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
565 -
566 566  The query data command is 13 03 00 00 00 01 87 78
567 567  
568 568  For example, the returned data is 13 03 02 (% style="color:red" %)**02 AE**(%%) 80 9B.
... ... @@ -570,229 +570,31 @@
570 570  02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV
571 571  
572 572  
573 -=== 3.6.5 Calibration Method ===
574 -
575 -This device uses two-point calibration, and two known ORP standard solutions need to be prepared. The calibration steps are as follows:
576 -(1) Place the electrode in distilled water to clean it, and then place it in 86mV standard buffer solution. After the data stabilizes,
577 -enter the following calibration command, and the 86mV point calibration is completed;
578 -
579 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
580 -|=(% 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
581 -|(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
582 -0X00
583 -)))|(% style="width:68px" %)0X24|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XCB|(% style="width:55px" %)(((
584 -0X03
585 -)))
586 -
587 -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.
588 -
589 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %)
590 -|=(% 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
591 -|(% style="width:64px" %)0X13|(% style="width:72px" %)0X06|(% style="width:66px" %)(((
592 -0X00
593 -)))|(% style="width:68px" %)0X25|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X9A|(% style="width:55px" %)(((
594 -0XC3
595 -)))
596 -
597 597  = 4. DR-DO1 Dissolved Oxygen Sensor =
598 598  
238 +== 4.7 RS485 Commands ==
599 599  
600 600  
601 -== 4.1 Specification ==
241 +The address of the dissolved oxygen sensor is 14
602 602  
243 +The query data command is 14 03 00 14 00 01 C6 CB
603 603  
604 -* **Measuring range**: 0-20mg/L, 0-50℃
605 -* **Accuracy**: 3%, ±0.5℃
606 -* **Resolution**: 0.01 mg/L, 0.01℃
607 -* **Maximum operating pressure**: 6 bar
608 -* **Output signal**: A: 4-20mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
609 -* **Power supply voltage**: 5-24V DC
610 -* **Working environment**: temperature 0-60℃; humidity <95%RH
611 -* **Power consumption**: ≤0.5W
612 -
613 -== 4.2 wiring ==
614 -
615 -[[image:image-20240720172632-4.png||height="390" width="640"]]
616 -
617 -
618 -== (% id="cke_bm_224234S" style="display:none" %) (%%)4.3 Impedance requirements for current signals ==
619 -
620 -[[image:image-20240718195414-8.png||height="100" width="575"]]
621 -
622 -
623 -== 4.4 Mechinical Drawing ==
624 -
625 -
626 -[[image:image-20240719155308-1.png||height="226" width="527"]]
627 -
628 -
629 -== 4.5 Instructions for use and maintenance ==
630 -
631 -* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
632 -* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
633 -
634 -== 4.6 RS485 Commands ==
635 -
636 -RS485 signaldefault address 0x14
637 -Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
638 -
639 -=== 4.6.1 Query address ===
640 -
641 -send
642 -
643 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
644 -|=(% 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
645 -|(% 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
646 -
647 -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.
648 -
649 -
650 -response
651 -
652 -Register 0 data high and register 0 data low indicate the actual address of the sensor: 1
653 -Register 1 data high and register 1 data low indicate the sensor version
654 -
655 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
656 -|=(% 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
657 -|(% 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
658 -
659 -=== 4.6.2 Change address ===
660 -
661 -For example: Change the address of the sensor with address 1 to 2(address range: 1-119), master → slave
662 -
663 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:907.333px" %)
664 -|=(% 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
665 -|(% 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
666 -
667 -response
668 -
669 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
670 -|=(% 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
671 -|(% 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
672 -
673 -=== 4.6.3 Query data ===
674 -
675 -
676 -Query the data (dissolved oxygen) of the sensor (address 14), host → slave
677 -
678 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
679 -|=(% 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
680 -|(% 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
681 -
682 -If the sensor receives correctly, the following data will be returned, slave → host
683 -
684 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
685 -|=(% 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
686 -|(% 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
687 -
688 688  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.
689 689  
690 690  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
691 691  
692 692  
693 -Query the data (temperature) of the sensor (address 14), host → slave
694 -
695 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
696 -|=(% 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
697 -|(% 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
698 -
699 -If the sensor receives correctly, the following data will be returned, slave → host
700 -
701 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
702 -|=(% 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
703 -|(% 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
704 -
705 -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.
706 -
707 -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℃
708 -
709 -
710 710  = 5. DR-TS1 Water Turbidity Sensor =
711 711  
252 +== 5.7 RS485 Commands ==
712 712  
713 713  
714 -== (% id="cke_bm_81470S" style="display:none" %) (%%)5.1 Specification ==
255 +The address of the dissolved oxygen sensor is 15
715 715  
716 -* **Measuring range**: 0.1～1000.0NTU
717 -* **Accuracy**: ±5%
718 -* **Resolution**: 0.1NTU
719 -* **Stability**: ≤3mV/24 hours
720 -* **Output signal**: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
721 -* **Power supply voltage**: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
722 -* **Working environment**: temperature 0～60℃; humidity ≤95%RH
723 -* **Power consumption**: ≤0.5W
724 -
725 -== 5.2 wiring ==
726 -
727 -[[image:image-20240720172640-5.png||height="387" width="635"]]
728 -
729 -
730 -== 5.3 Impedance requirements for current signals ==
731 -
732 -[[image:image-20240718195414-8.png||height="100" width="575"]]
733 -
734 -
735 -== 5.4 Mechinical Drawing ==
736 -
737 -[[image:image-20240718195058-7.png||height="305" width="593"]]
738 -
739 -
740 -== 5.5 Instructions for use and maintenance ==
741 -
742 -* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
743 -* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
744 -
745 -== 5.6 RS485 Commands ==
746 -
747 -
748 -RS485 signaldefault address 0x15
749 -Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
750 -
751 -=== 5.6.1 Query address ===
752 -
753 -send
754 -
755 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
756 -|=(% 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
757 -|(% 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
758 -
759 -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.
760 -
761 -
762 -response
763 -
764 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
765 -|=(% 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
766 -|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
767 -
768 -=== 5.6.2 Change address ===
769 -
770 -For example: Change the address of the sensor with address 1 to 2, master → slave
771 -
772 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %)
773 -|=(% 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
774 -|(% 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
775 -
776 -If the sensor receives correctly, the data is returned along the original path.
777 -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.
778 -
779 -=== 5.6.3 Query data ===
780 -
781 -
782 -Query the data (turbidity) of the sensor (address 15), host → slave
783 -
784 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
785 -|=(% 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
786 -|(% 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
787 -
788 -If the sensor receives correctly, the following data will be returned, slave → host
789 -
790 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
791 -|=(% 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
792 -|(% 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
793 -
794 794  The query data command is 15 03 00 00 00 01 87 1E
795 795  
796 796  For example, the returned data is 15 03 02 (% style="color:red" %)**02 9A**(%%) 09 4C
797 797  
798 798  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 +
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