Troubleshooting Incorrect pH Sensor Values and Calibration Issues

A pH sensor that displays incorrect values or fails to calibrate is most often caused by a sensor error or physical damage to the probe or internal wiring. Reset the sensor by holding the AMP-3 address button for more than 5 seconds, inspect for damage, then repeat the calibration procedure. If the problem persists, contact customer support with the sensor serial number.

What causes incorrect pH sensor values?

1. Sensor Errors:

   • If the pH sensor is experiencing a sensor error, it may not calibrate properly. This can lead to the display of nonsensical or incorrect values.

2. Internal Damage:

   • Physical damage, such as a broken internal wire, can prevent the sensor from functioning correctly. This type of damage may occur during shipping or handling.

How do you troubleshoot a pH sensor that won't calibrate?

1. Reset the pH sensor by pressing and holding the address button of the AMP-3 for more than 5 seconds before attempting calibration.
2. Inspect the probe and wiring for any visible signs of damage. If damage is present, this is likely the cause of the calibration failure.
3. Calibrate the pH sensor using the appropriate calibration solution(s) for your target pH range. Refer to your sensor's calibration guide or manufacturer documentation for the exact steps. If a calibration guide is not available, contact customer support to obtain the correct procedure.
4. If the sensor continues to show incorrect values after completing the steps above, contact customer support. Have the sensor serial number and purchase information ready before reaching out.

Still seeing incorrect values?

If the steps above do not resolve the issue, contact customer support for further guidance. Having the sensor serial number and purchase details ready will help support diagnose the problem faster.