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Last modified by kai on 2025/08/06 10:05
From version 137.3
edited by Karry Zhuang
on 2024/07/16 11:06
Change comment: There is no comment for this version
To version 138.1
edited by Karry Zhuang
on 2024/07/16 11:54
Change comment: There is no comment for this version

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925 925  [[image:image-20240716105318-5.png||height="330" width="594"]]
926 926  
927 927  
928 +=== 6.2.5 Maintenance ===
928 928  
929 929  
931 +* 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.
932 +* 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.
933 +* 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.
934 +* 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.).
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931 931  
932 -=== 6.2.5  Angle Mapping ===
933 933  
938 +=== 6.2.6 Calibration ===
934 934  
935 -[[image:1656056303845-585.png]]
936 936  
941 +This device uses one-point calibration, and you need to prepare a known E standard solution. When the mileage K=1, 1~~2000 uses 1413uS/cm standard solution, and when the mileage K=10, 10~~20000 uses 12.88mS/cm standard solution.
937 937  
938 -=== 6.2.6  Installation Notice ===
943 +(% style="color:#4472c4" %)**The steps are as follows:**
939 939  
945 +(1) Put the electrode in distilled water to clean it. When the mileage is 1~~2000, use 1413HS/cm standard solution.After the data is stable, enter the following calibration command
940 940  
941 -(((
942 -Do not power on while connect the cables. Double check the wiring before power on.
943 -)))
947 +(% style="color:#4472c4" %)**"AT+CALEC=1" downlink:0xFD 01**
944 944  
945 -(((
946 -The sensor must be installed with below direction, towards North.
949 +(2) Put the electrode in distilled water to clean it. When the range is 10~~20000, use 12.88mS/cm standard solution.After the data is stable, enter the following calibration command
947 947  
948 -
949 -)))
951 +(% style="color:#4472c4" %)**"AT+CALEC=10" downlink:0xFD 10**
950 950  
951 -[[image:image-20220624153901-3.png]]
952 952  
953 -
954 954  == 6.3 CO2/PM2.5/PM10 ~-~- WSS-03 ==
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956 956