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Changes for page Water Quality Sensors

Last modified by Karry Zhuang on 2025/07/25 09:38
From version 45.97
edited by Xiaoling
on 2024/08/06 18:08
Change comment: There is no comment for this version
To version 69.3
edited by Karry Zhuang
on 2025/07/15 19:06
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
... ... @@ -19,20 +19,20 @@
19 19  * **EC Range & Resolution:**
20 20  ** **ECK0.01** : 0.02 ~~ 20 μS/cm
21 21  ** **ECK0.1**: 0.2 ~~ 200.0 μS/cm
22 -** **ECK1.0** : 2 ~~ 2,000 μS/cm  Resolution: 1 μS/cm
23 -** **ECK10.0** : 20 ~~ 20,000 μS/cm  Resolution: 10 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
24 24  
25 25  * **EC Accuracy**: ±1% FS
26 -
27 -* **Temperature Measure Range**: -20 ~~ 60 °C
28 -
29 29  * **Temperature Accuracy: **±0.5 °C
30 -
28 +* **Working environment:**
29 +** Ambient Temperature: 0–60°C
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
31 31  * **IP Rated**: IP68
32 32  
33 33  * **Max Pressure**: 0.6MPa
34 34  
35 -
36 36  == 1.2 Application for Different Range ==
37 37  
38 38  
... ... @@ -42,15 +42,17 @@
42 42  == 1.3 Wiring ==
43 43  
44 44  
45 -[[image:image-20240720172533-1.png||height="347" width="569"]]
45 +[[image:image-20241129142314-1.png||height="352" width="1108"]]
46 46  
47 47  
48 48  == 1.4 Mechinical Drawing ==
49 49  
50 + ECK1 and ECK10  ECK200
50 50  
51 -[[image:image-20240714174241-2.png]]
52 52  
53 +[[image:image-20240714174241-2.png]] [[image:1752564223905-283.png||height="399" width="160"]]
53 53  
55 +
54 54  == 1.5 Installation ==
55 55  
56 56  
... ... @@ -100,7 +100,6 @@
100 100  
101 101  * The equipment should be calibrated before each use. It is recommended to calibrate it every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.).
102 102  
103 -
104 104  == 1.7 RS485 Commands ==
105 105  
106 106  
... ... @@ -127,6 +127,7 @@
127 127  |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
128 128  
129 129  
131 +
130 130  === 1.7.2 Change address ===
131 131  
132 132  
... ... @@ -164,7 +164,6 @@
164 164  0X8F
165 165  )))
166 166  
167 -
168 168  === 1.7.4 Query data ===
169 169  
170 170  
... ... @@ -206,8 +206,11 @@
206 206  **For example**, the returned data is 12 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 B8 D0. 02 AE is converted to decimal 686,  K=1, EC: 686uS/cm,temperature: 35.6℃ Convert the returned data to decimal and divide by 10.
207 207  
208 208  
210 +ECK200
211 +
209 209  === 1.7.5 Calibration Method ===
210 210  
214 +ECK1 and ECK10.0
211 211  
212 212  This device uses one-point calibration, and you need to prepare a known E standard solution. When mileage K=1, 1~~2000 uses 1413μS/cm standard solution, and when mileage K=10, 10~~20000 uses 12.88mS/cm standard solution.
213 213  
... ... @@ -252,6 +252,61 @@
252 252  |(% 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
253 253  
254 254  
259 +
260 +ECK200.0
261 +
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 +
264 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
265 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Register contents|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
266 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X10|(% style="width:135px" %)0X01 0X20|(% style="width:126px" %)0X00 0X03|(% style="width:85px" %)0X06|(% style="width:1px" %)(((
267 +0X00
268 +0X01
269 +0X00
270 +0X00
271 +0X05
272 +0X85
273 +)))|(% style="width:1px" %)0X1c|(% style="width:1px" %)(((
274 +(((
275 +0X25
276 +)))
277 +)))
278 +
279 +**response:**
280 +
281 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
282 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
283 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X10|(% style="width:135px" %)0X01 0X02|(% style="width:126px" %)0X00 0X03|(% style="width:85px" %)0X06|(% style="width:1px" %)(((
284 +0X80
285 +)))|(% style="width:60px" %)0X3e(((
286 +
287 +)))
288 +
289 +Use 111310uS/cm standard solution to calibrate the second point and send the frame: 111310 is converted into hexadecimal 1b2ce, and 0002, 0001,b2 ce are written to 0x0120, 0x0121, and 0x0122 respectively.
290 +
291 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
292 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)Register contents|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 53px;background-color:#4F81BD;color:white" %)CRC16 high
293 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X10|(% style="width:135px" %)0X01 0X20|(% style="width:126px" %)0X00 0X03|(% style="width:85px" %)0X06|(% style="width:1px" %)(((
294 +0X00
295 +0X02
296 +0X00
297 +0X01
298 +0Xb2
299 +0Xce
300 +)))|(% style="width:1px" %)0X3e|(% style="width:1px" %)(((
301 +(((
302 +0X22
303 +)))
304 +)))
305 +
306 +**response:**
307 +
308 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
309 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
310 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X10|(% style="width:135px" %)0X01 0X02|(% style="width:126px" %)0X00 0X03|(% style="width:85px" %)0X06|(% style="width:1px" %)(((
311 +0X80
312 +)))|(% style="width:60px" %)0X3e
313 +
255 255  = 2. DR-PH01 Water PH Sensor =
256 256  
257 257  == 2.1 Specification ==
... ... @@ -273,7 +273,9 @@
273 273  
274 274  * **Temperature measurement error**: ±0.5°C
275 275  
276 -* **Temperature Measure Range**: -20 ~~ 60 °C
335 +* **Working environment:**
336 +** Ambient Temperature: 0–60°C
337 +** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
277 277  
278 278  * **Temperature Accuracy: **±0.5 °C
279 279  
... ... @@ -281,7 +281,6 @@
281 281  
282 282  * **Max Pressure**: 0.6MPa
283 283  
284 -
285 285  == 2.2 Wiring ==
286 286  
287 287  
... ... @@ -343,7 +343,6 @@
343 343  
344 344  * The equipment should be calibrated before each use. For long-term use, it is recommended to calibrate once every 3 months. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time.
345 345  
346 -
347 347  == 2.6 RS485 Commands ==
348 348  
349 349  
... ... @@ -409,8 +409,8 @@
409 409  Query the data (PH) of the sensor (address 10), host → slave
410 410  
411 411  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
412 -|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
413 -|(% style="width:99px" %)0X10|(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X00|(% style="width:70px" %)0X00|(% style="width:72px" %)0X01|(% style="width:56px" %)0X87|(% style="width:56px" %)0X4B
471 +|=(% 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
472 +|(% 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
414 414  
415 415  If the sensor receives correctly, the following data will be returned, slave → host
416 416  
... ... @@ -482,13 +482,14 @@
482 482  
483 483  * **Stability**: ≤2mv/24 hours
484 484  
485 -* **Equipment working conditions**: Ambient temperature: 0-60°C Relative humidity: <85%RH
544 +* **Working environment:**
545 +** Ambient Temperature: 0–60°C
546 +** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
486 486  
487 487  * **IP Rated**: IP68
488 488  
489 489  * **Max Pressure**: 0.6MPa
490 490  
491 -
492 492  == 3.2 Wiring ==
493 493  
494 494  
... ... @@ -559,7 +559,6 @@
559 559  |=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 64.75px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 64.75px;background-color:#4F81BD;color:white" %)CRC16 high
560 560  |(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4
561 561  
562 -
563 563  **response:**
564 564  
565 565  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)
... ... @@ -566,7 +566,6 @@
566 566  |=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 103.6px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 103.6px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
567 567  |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
568 568  
569 -
570 570  === 3.6.2 Change address ===
571 571  
572 572  
... ... @@ -604,7 +604,6 @@
604 604  0X96
605 605  )))
606 606  
607 -
608 608  === 3.6.4 Query data ===
609 609  
610 610  
... ... @@ -657,11 +657,11 @@
657 657  == 4.1 Specification ==
658 658  
659 659  
660 -* **Measuring range**: 0-20mg/L, 0-50°C
717 +* **Measuring range**: 0-20mg/L, 0–50℃
661 661  
662 -* **Accuracy**: 3%, ±0.5°C
719 +* **Accuracy**: 3%, ±0.5℃
663 663  
664 -* **Resolution**: 0.01 mg/L, 0.01°C
721 +* **Resolution**: 0.01 mg/L, 0.01℃
665 665  
666 666  * **Maximum operating pressure**: 6 bar
667 667  
... ... @@ -669,7 +669,9 @@
669 669  
670 670  * **Power supply voltage**: 5-24V DC
671 671  
672 -* **Working environment**: temperature 0-60°C; humidity <95%RH
729 +* **Working environment:**
730 +** Ambient Temperature: 0–60°C
731 +** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
673 673  
674 674  * **Power consumption**: ≤0.5W
675 675  
... ... @@ -682,13 +682,10 @@
682 682  == 4.3 Impedance requirements for current signals ==
683 683  
684 684  
685 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
686 -|=(% style="width: 140px" %)Supply Voltage|=(% style="width: 70px;" %)9V|=(% style="width: 70px;" %)**12V**|=(% style="width: 70px;" %)**20V**|=(% style="width: 70px;" %)**24V**
687 -|(% style="width:137px" %)**Max Impedance**|(% style="width:70px" %)**<250Ω**|(% style="width:68px" %)**<400Ω**|(% style="width:68px" %)**<500Ω**|(% style="width:70px" %)**<900Ω**
744 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
745 +|(% style="width:132px" %)**Supply Voltage**|(% style="width:67px" %)**9V**|(% style="width:67px" %)**12V**|(% style="width:67px" %)**20V**|(% style="width:67px" %)**24V**
746 +|(% style="width:132px" %)**Max Impedance**|(% style="width:65px" %)**<250Ω**|(% style="width:67px" %)**<400Ω**|(% style="width:67px" %)**<500Ω**|(% style="width:65px" %)**<900Ω**
688 688  
689 -[[image:image-20240718195414-8.png||height="100" width="575"]]
690 -
691 -
692 692  == 4.4 Mechinical Drawing ==
693 693  
694 694  
... ... @@ -702,7 +702,6 @@
702 702  
703 703  * If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
704 704  
705 -
706 706  == 4.6 RS485 Commands ==
707 707  
708 708  
... ... @@ -746,7 +746,6 @@
746 746  |=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Starting register address low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Register length low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
747 747  |(% style="width:99px" %)0X01|(% style="width:72px" %)0X10|(% style="width:64px" %)0X00|(% style="width:68px" %)0X0A|(% style="width:70px" %)0X00|(% style="width:72px" %)0X02|(% style="width:56px" %)0X61|(% style="width:56px" %)0XCA
748 748  
749 -
750 750  === 4.6.3 Query data ===
751 751  
752 752  
... ... @@ -789,7 +789,7 @@
789 789  == 5.1 Specification ==
790 790  
791 791  
792 -* **Measuring range**: 0.11000.0NTU
846 +* **Measuring range**: 0.1~~1000.0NTU
793 793  
794 794  * **Accuracy**: ±5%
795 795  
... ... @@ -797,11 +797,13 @@
797 797  
798 798  * **Stability**: ≤3mV/24 hours
799 799  
800 -* **Output signal**: A: 420 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
854 +* **Output signal**: RS485 (standard Modbus-RTU protocol, device default address: 01)
801 801  
802 -* **Power supply voltage**: 524V DC (when output signal is RS485)1224V DC (when output signal is 420mA)
856 +* **Power supply voltage**: 5~~24V DC (when output signal is RS485), 12~~24V DC (when output signal is 4~~20mA)
803 803  
804 -* **Working environment**: temperature 060°C; humidity ≤ 95%RH
858 +* **Working environment:**
859 +** Ambient Temperature: 0–60°C
860 +** Relative Humidity: <85% RH(Specifically refers to the cable male and female)
805 805  
806 806  * **Power consumption**: ≤ 0.5W
807 807  
... ... @@ -814,11 +814,10 @@
814 814  == 5.3 Impedance requirements for current signals ==
815 815  
816 816  
817 -(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
818 -|=(% style="width: 140px" %)Supply Voltage|=(% style="width: 70px;" %)9V|=(% style="width: 70px;" %)**12V**|=(% style="width: 70px;" %)**20V**|=(% style="width: 70px;" %)**24V**
819 -|(% style="width:137px" %)**Max Impedance**|(% style="width:70px" %)**<250Ω**|(% style="width:68px" %)**<400Ω**|(% style="width:68px" %)**<500Ω**|(% style="width:70px" %)**<900Ω**
873 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:400px" %)
874 +|(% style="width:132px" %)**Supply Voltage**|(% style="width:67px" %)**9V**|(% style="width:67px" %)**12V**|(% style="width:67px" %)**20V**|(% style="width:67px" %)**24V**
875 +|(% style="width:132px" %)**Max Impedance**|(% style="width:65px" %)**<250Ω**|(% style="width:67px" %)**<400Ω**|(% style="width:67px" %)**<500Ω**|(% style="width:65px" %)**<900Ω**
820 820  
821 -
822 822  == 5.4 Mechinical Drawing ==
823 823  
824 824  
... ... @@ -891,3 +891,98 @@
891 891  For example, the returned data is 15 03 02 (% style="color:red" %)**02 9A**(%%) 09 4C
892 892  
893 893  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
949 +
950 +
951 += 6. DR-CL Water CL Probe =
952 +
953 +== 6.1 Specification: ==
954 +
955 +* **Power Input**: DC7~~30
956 +
957 +* **Power Consumption** : 0.19W
958 +
959 +* **Interface**: RS485. 9600 Baud Rate
960 +
961 +* **CL Range & Resolution:**
962 +** **CL2ML:**0-2mg/L
963 +** **CL10ML:**0-10mg/L
964 +** **Resolution:**0.01mg/L
965 +
966 +* **CL Accuracy**: ±5% FS
967 +* **Temperature Accuracy: **±0.5 °C
968 +* **Working environment:**
969 +** Ambient Temperature: 0–50°C
970 +** pH:4-9
971 +** Flow rate: 30L/h~~60L/h (flow tank installation)
972 +* **IP Rated**: IP68
973 +
974 +* **Max Pressure**: 0.6MPa
975 +
976 +== 6.2 Wiring ==
977 +
978 +[[image:image-20240720172548-2.png||height="348" width="571"]]
979 +
980 +== 6.3 Mechinical Drawing ==
981 +
982 +[[image:1752573238705-910.png||height="694" width="278"]]
983 +
984 +== 6.4 Installation ==
985 +
986 +Flow-through installation: Use the matching flow slot for installation. The device and the flow slot are installed tightly.
987 +
988 +The measuring end is completely immersed in the measured liquid to ensure a steady flow rate without bubbles.
989 +
990 +It is recommended that the flow rate be controlled at 30-60Lh to ensure the accuracy of the test.
991 +
992 +[[image:1752573643879-991.png||height="360" width="343"]]
993 +
994 +== 6.5 Maintenance ==
995 +
996 +* 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!
997 +* After using the electrode, please clean the electrode head with clean water and cover it with a protective cover.
998 +* 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.
999 +* 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.
1000 +* 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.
1001 +* 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.
1002 +The electrode has a service life of about one year, and a new electrode should be replaced in time after aging.
1003 +* Before the cable plug and the device plug are locked, do not put the plug part into water.
1004 +
1005 +
1006 +
1007 +== 6.6 RS485 Commands ==
1008 +
1009 +RS485 signal 
1010 +Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1
1011 +
1012 +
1013 +== 6.7 Query data ==
1014 +
1015 +Example 1: Read the current residual chlorine concentration of the device with address 01
1016 +
1017 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:534.333px" %)
1018 +|=(% style="width: 42px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register Address|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Register length|=(% style="width: 53px;background-color:#4F81BD;color:white" %)Data length|=(% style="width: 53px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 60px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
1019 +|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:135px" %)0X00 0X00|(% style="width:126px" %)0X00 0X01|(% style="width:85px" %)0X06|(% style="width:1px" %)(((
1020 +0X84
1021 +)))|(% style="width:60px" %)0X0a
1022 +
1023 +
1024 +
1025 +
1026 +
1027 +
1028 +
1029 +
1030 +
1031 +
1032 +
1033 +
1034 +
1035 +
1036 +
1037 +
1038 +
1039 +
1040 +
1041 += 7.  Water Quality Sensor Datasheet =
1042 +
1043 +* **[[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]]**
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