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How do I calibrate my Current Sensor connected to my AP9921X Battery Management System?


 
 
Issue:
How do I calibrate my Current Sensor connected to my AP9921X Battery Management System

 
Product line:
AP9921X
 
 
Environment:
All models/ all serial numbers
 
 
Cause:
How do I calibrate my Current Sensor connected to my AP9921X Battery Management System

 
 
Resolution:
The Current Probe should be calibrated in the field.
  1. Begin by removing the Current Probe from any current carrying conductors and isolating it from magnetic fields.
  2. With the AP9921X BMS powered on and operational, log into the BMS via the web user interface and take note of the displayed value on the System/Status screen (in Amps DC) for each String Current Probe.

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3. On the left side bar there is a “Calibration” link, click on it. By placing a number of equal but opposite value in each field, the current probe should then indicate a zero-amp current flow.



4. Return the Current Probe to the correct polar orientation on the current carrying conductors, and see if the reading is displaying the correct flow direction and amplitude. 
 
 
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