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guide_to_troubleshooting

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guide_to_troubleshooting [23/09/2019 07:05]
Consort Support [Guide to troubleshooting for pH/ORP/Ion]
guide_to_troubleshooting [18/10/2019 07:54] (current)
Consort Support
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 When a measurement problem arises, it is best to try to locate the cause first. Here's a list of all possible reasons that might cause measurement issues: When a measurement problem arises, it is best to try to locate the cause first. Here's a list of all possible reasons that might cause measurement issues:
  
-===== READINGS ARE NOT REPRODUCIBLE  ​=====+===== Readings are not reproducible ​=====
   * Is there sample carryover?   * Is there sample carryover?
   * Are there sample interferences or complexing agents present?   * Are there sample interferences or complexing agents present?
   * Is the reference electrode junction contaminated?​   * Is the reference electrode junction contaminated?​
  
-===== SLOW RESPONSE ​(READINGS SLOWLY CHANGING)  =====+===== Slow response ​(Reading are changing slowly) =====
   * Was the electrode stored in the wrong solution?   * Was the electrode stored in the wrong solution?
   * Was the electrode poisoned by the sample?   * Was the electrode poisoned by the sample?
  
-===== OUT OF RANGE READING ​=====+===== Out of range =====
   * Is the electrode plugged into the controller properly?   * Is the electrode plugged into the controller properly?
   * Is there a reference electrode present?   * Is there a reference electrode present?
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   * Is the electrode placed in the sample solution?   * Is the electrode placed in the sample solution?
  
-===== LOW SLOPE OR NO SLOPE  =====+===== Low slope or no slope  =====
   * Are the standards too old, contaminated,​ or made wrong?   * Are the standards too old, contaminated,​ or made wrong?
   * Has the sample pH been adjusted properly to the operating range of the electrode?   * Has the sample pH been adjusted properly to the operating range of the electrode?
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   * Is there enough fill solution left in the reference electrode?   * Is there enough fill solution left in the reference electrode?
  
-===== NOISY RESPONSE ​(READINGS RANDOMLY CHANGING) =====+===== Noisy response ​(Readings are changing randomly) =====
   * Is the controller grounded?   * Is the controller grounded?
   * Is there an air bubble on electrode surface?   * Is there an air bubble on electrode surface?
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   * Is there enough fill solution left in the reference electrode?   * Is there enough fill solution left in the reference electrode?
  
-===== DRIFTY RESPONSE ​(READINGS CONTINUOUSLY CHANGING) ===== +===== Drifty response ​(Readings are changing continuously) =====
   * Is there excessive leaking at the reference electrode junction?   * Is there excessive leaking at the reference electrode junction?
   * Is the reference electrode junction clogged?   * Is the reference electrode junction clogged?
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   * Does the sensing membrane need conditioning?​   * Does the sensing membrane need conditioning?​
  
-===== INACCURATE READINGS ​(BUT CALIBRATION IS OK) ===== +===== Inaccurate readings ​(calibration is ok ...) =====
   * Are the standards incorrect?   * Are the standards incorrect?
   * Was the sample pH adjusted properly?   * Was the sample pH adjusted properly?
guide_to_troubleshooting.txt · Last modified: 18/10/2019 07:54 by Consort Support