S I G N A T U R E
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ERROR MESSAGES:
If the calibration process is interrupted for whatever reason, the ORP
controller will automatically leave the calibration mode if the intervention
of the user is not detected in a few seconds. In this case, “E1” indication
in display [20] will appear.
If the ORP value during the calibration process is very different from the
expected one, (e.g., defective sensor, etc.), display [20] will indicate “E2”,
not allowing calibration.
If the ORP measure is unstable during the calibration process, code “E3”
will appear in display [20]. In addition, the sensor calibration will not be
allowed.
8.4. MAITENANCE OF THE PH/ORP SENSORS
1. Ensure that the sensor membrane remains moist at all times.
2. If the sensor is not going to be used for a long period, keep it submerged in a conservation
solution at pH=4.0.
3. To clean the sensor of possible dirt, avoid the use of abrasive materials that can scratch the
sensor surface.
4. The pH/ORP sensors are a consumable part, so it must be replaced periodically.
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