issues_with_orp_measurement
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issues_with_orp_measurement [25/05/2014 16:46] Consort created |
issues_with_orp_measurement [19/02/2015 08:00] pieter [Inconsistency between different sensors] |
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| ===== Inconsistency between different sensors ===== | ===== Inconsistency between different sensors ===== | ||
| If you observe inconsistency between different sensors or experience ORP readings which seem unusual for the water being tested, the following steps are recommended to identify and/or correct the problem: | If you observe inconsistency between different sensors or experience ORP readings which seem unusual for the water being tested, the following steps are recommended to identify and/or correct the problem: | ||
| - | - Make certain that the pH sensor is functioning properly. The reference electrode of the sonde is common to both pH and ORP sensors and, therefore, if both pH and ORP sensors are malfunctioning this is likely to be the source of the problem. Reference electrode problems usually appear as either total failure or as a slow response in both pH and ORP readings. If a reference electrode problem is suspected, test the ORP sensor in a standard and make certain that it is within 20-30 mV of the predicted value. If reference electrode performance is indicated, clean the sensor according to the instructions shown below and then retest. | + | - Make certain that the pH sensor is functioning properly. The reference electrode of the probe is common to both pH and ORP sensors and, therefore, if both pH and ORP sensors are malfunctioning this is likely to be the source of the problem. Reference electrode problems usually appear as either total failure or as a slow response in both pH and ORP readings. If a reference electrode problem is suspected, test the ORP sensor in a standard and make certain that it is within 20-30 mV of the predicted value. If reference electrode performance is indicated, clean the sensor according to the instructions shown below and then retest. |
| - If the sensor performs well in the ORP standard, carry out the sequential cleaning process documented in [[Maintenance_ORP|ORP Electrode Maintenance]]. | - If the sensor performs well in the ORP standard, carry out the sequential cleaning process documented in [[Maintenance_ORP|ORP Electrode Maintenance]]. | ||
issues_with_orp_measurement.txt · Last modified: 01/12/2015 15:36 by pieter
