Follow procedures below to isolate and resolve sensor problems.
|Symptom||Possible Cause||Corrective Action|
|Out of range calibration||Considerable temperature gradient between standard solutions and reference fill solutions||Soak the electrode in the low range calibration standard for two hours and recalibrate|
|Contamination of calibration standards, poor dilution accuracy or distilled water quality, mathematical error||Prepare new calibration standards|
|Sample data is erroneous||Sample pH is too high or low||Check that the pH solution of the sample is within the probe’s operating range|
|Extrapolated data||Make sure that the expected concentration of the sample is within the sensor’s calibration range|
|Samples contain interfering ions||Use appropriate complexing agents to negate the effects|
If issues persist, contact NexSens Customer Support.