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Changes for page Water Quality Sensors

Last modified by Karry Zhuang on 2025/07/25 09:38
From version 68.1
edited by Karry Zhuang
on 2025/07/15 18:34
Change comment: There is no comment for this version
To version 72.4
edited by Karry Zhuang
on 2025/07/16 09:26
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -5,7 +5,7 @@
5 5  
6 6  
7 7  
8 -= 1. DR-ECK Water EC Probe =
8 += 1. DR-EC Water EC Probe =
9 9  
10 10  == 1.1 Specification: ==
11 11  
... ... @@ -17,20 +17,25 @@
17 17  * **Interface**: RS485. 9600 Baud Rate
18 18  
19 19  * **EC Range & Resolution:**
20 -** **ECK0.01** : 0.02 ~~ 20 μS/cm
21 -** **ECK0.1**: 0.2 ~~ 200.0 μS/cm
22 -** **ECK1.0** : 0 ~~ 2,000 μS/cm  Resolution: 1 μS/cm
23 -** **ECK10.0** : 10 ~~ 20,000 μS/cm  Resolution: 10 μS/cm
24 -** **ECK200.0** : 1 ~~ 200,000 μS/cm  Resolution: 1 μS/cm
25 -
20 +** **ECK1.0 :** 0 ~~ 2,000 μS/cm  Resolution: 1 μS/cm
21 +** **ECK10.0 : **10 ~~ 20,000 μS/cm  Resolution: 10 μS/cm
22 +** **EC200 : **1 ~~ 200,000 μS/cm  Resolution: 1 μS/cm
26 26  * **EC Accuracy**: ±1% FS
24 +* **Salinity measurement range**
25 +** **EC200 :**0~~70PSU Resolution: 0.1PSU
26 +* **Temperature measurement range**
27 +** **ECK1/ECK10:**-20~~+60℃; Resolution: 0.1℃
28 +** **EC200 :**-5~~+80℃; Resolution: 0.1℃
27 27  * **Temperature Accuracy: **±0.5 °C
30 +* **Temperature compensation range**
31 +** **ECK1/ECK10:**0~~+60℃ (default compensation temperature 25℃)
32 +** **EC200:**-5~~+80℃ (default compensation temperature 25℃)
33 +* **Temperature compensation coefficient:**Default 0.2
28 28  * **Working environment:**
29 29  ** Ambient Temperature: 0–60°C
30 30  ** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
31 -** ECK200.0 Continuous monitoring of cross-section water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food, tap water, seawater and other high conductivity environments
37 +** ECK200 Continuous monitoring of cross-section water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food, tap water, seawater and other high conductivity environments
32 32  * **IP Rated**: IP68
33 -
34 34  * **Max Pressure**: 0.6MPa
35 35  
36 36  == 1.2 Application for Different Range ==
... ... @@ -47,7 +47,7 @@
47 47  
48 48  == 1.4 Mechinical Drawing ==
49 49  
50 - ECK1 and ECK10  ECK200
55 + ECK1 and ECK10  EC200
51 51  
52 52  
53 53  [[image:image-20240714174241-2.png]] [[image:1752564223905-283.png||height="399" width="160"]]
... ... @@ -207,8 +207,26 @@
207 207  **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.
208 208  
209 209  
210 -ECK200
215 +EC200
211 211  
217 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
218 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Register Address|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register length|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
219 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:74px" %)0X00 0X00|(% style="width:94px" %)0X00 0X04|(% style="width:72px" %)(((
220 +0XC5
221 +)))|(% style="width:77px" %)0XC8
222 +
223 +**response:**
224 +
225 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
226 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Number of valid bytes|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register length|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
227 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:74px" %)0X00 0X00|(% style="width:94px" %)0X00 0X04|(% style="width:72px" %)(((
228 +0XC5
229 +)))|(% style="width:77px" %)0XC8
230 +
231 +
232 +
233 +
234 +
212 212  === 1.7.5 Calibration Method ===
213 213  
214 214  ECK1 and ECK10.0
... ... @@ -257,7 +257,7 @@
257 257  
258 258  
259 259  
260 -ECK200.0
283 +EC200
261 261  
262 262  For the device with address 01, use 1413uS/cm standard solution to calibrate the first point. Send frame: 1413. Convert hexadecimal to 585. Write 0001, 00 00, 0585 to 0x0120, 0x0121, 0x0122 respectively.
263 263  
... ... @@ -468,8 +468,8 @@
468 468  Query the data (PH) of the sensor (address 10), host → slave
469 469  
470 470  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
471 -|=(% 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
472 -|(% 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
494 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 75px; 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
495 +|(% style="width:99px" %)0X10|(% style="width:74px" %)0X03|(% style="width:75px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X4B
473 473  
474 474  If the sensor receives correctly, the following data will be returned, slave → host
475 475  
... ... @@ -991,9 +991,62 @@
991 991  
992 992  [[image:1752573643879-991.png||height="360" width="343"]]
993 993  
1017 +== 6.5 Maintenance ==
994 994  
1019 +* The device 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!
1020 +* After using the electrode, please clean the electrode head with clean water and cover it with a protective cover.
1021 +* When measuring the device, the measured liquid should flow and the flow rate should be uniform, and there should be no bubbles attached to the measuring end of the device.
1022 +* If the electrode diaphragm is attached with dirt and mineral components, the sensitivity will be reduced, and it may not be possible to perform sufficient measurement. Please ensure that the platinum ring is clean.
1023 +* The platinum induction ring of a good residual chlorine electrode should always be kept clean and bright. If the platinum ring of the electrode becomes rough or covered with pollutants after measurement, please clean it according to the following method: (For reference) Inorganic pollution: immerse the electrode in 0.1mol/L dilute hydrochloric acid for 15 minutes, gently wipe the platinum ring of the residual chlorine electrode with a cotton swab, and then wash it with tap water.
1024 +* Organic or oil pollution: immerse the electrode in tap water with a small amount of detergent, such as dishwashing liquid, and thoroughly clean the sensing surface of the electrode sensor. Gently wipe the platinum ring of the electrode with a cotton swab, then rinse with tap water, and the cleaning is complete. If the platinum ring of the electrode has formed an oxide film, please use toothpaste or 1000-grit fine sandpaper to properly polish the sensing surface, and then clean it with tap water. The platinum ring is connected to the glass, so please handle it carefully when polishing.
1025 +The electrode has a service life of about one year, and a new electrode should be replaced in time after aging.
1026 +* Before the cable plug and the device plug are locked, do not put the plug part into water.
995 995  
996 996  
1029 +
1030 +== 6.6 RS485 Commands ==
1031 +
1032 +RS485 signal 
1033 +Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
1034 +
1035 +
1036 +== 6.7 Query data ==
1037 +
1038 +Example 1: Read the current residual chlorine concentration of the device with address 01
1039 +
1040 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
1041 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 74px; background-color: rgb(79, 129, 189); color: white;" %)Register Address|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register length|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
1042 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:74px" %)0X00 0X00|(% style="width:94px" %)0X00 0X01|(% style="width:72px" %)(((
1043 +0X84
1044 +)))|(% style="width:77px" %)0X0A
1045 +
1046 +**response:**
1047 +
1048 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
1049 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 83px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 110px; background-color: rgb(79, 129, 189); color: white;" %)Valid Bytes|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register contents|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
1050 +|(% style="width:99px" %)0X01|(% style="width:83px" %)0X03|(% style="width:110px" %)0X02|(% style="width:94px" %)0X03 0X16|(% style="width:72px" %)(((
1051 +0X39
1052 +)))|(% style="width:77px" %)0X7A
1053 +
1054 +Calculation of residual chlorine concentration: 316H (hexadecimal) = 790 => residual chlorine = 7.90
1055 +
1056 +
1057 +Example 2: Set the deviation value for the current residual chlorine value of the device with address 01 to correct the value and send the frame: (If the current residual gas value output by the device is 7.90, the value needs to be corrected to 8.00, the difference is 8.00-7.90-0.100.1*100=10=>41200000 (floating point number), write 41200000 to the contents of the two registers)
1058 +
1059 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
1060 +|=(% 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" %)Register address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Register number|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Byte number|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Register content|=(% style="width: 54.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 58.75px;background-color:#4F81BD;color:white" %)CRC16 high
1061 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X10|(% style="width:135px" %)0X01 0X12|(% style="width:126px" %)0X00 0X02|(% style="width:85px" %)0X04|(% style="width:1px" %)0X4120 0X0000|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A
1062 +
1063 +**response:**
1064 +
1065 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
1066 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 83px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 110px; background-color: rgb(79, 129, 189); color: white;" %)Register address|=(% style="width: 94px; background-color: rgb(79, 129, 189); color: white;" %)Register number|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 77px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
1067 +|(% style="width:99px" %)0X01|(% style="width:83px" %)0X10|(% style="width:110px" %)0X01 0X12|(% style="width:94px" %)0X00 0X02|(% style="width:72px" %)(((
1068 +0XE5
1069 +)))|(% style="width:77px" %)0X0D
1070 +
1071 +
1072 +
997 997  = 7.  Water Quality Sensor Datasheet =
998 998  
999 999  * **[[Water Quality Sensor Transmitter Datasheet>>https://www.dropbox.com/scl/fi/9tofocmgapkbddshznumn/Datasheet_WQS-xB-WQS-xS_Water-Quality-Sensor-Transmitter.pdf?rlkey=wxua12ur9swk30rkqnh2boo9z&st=axga6epf&dl=0]]**