horiba U-51, Инструкция по эксплуатации

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4 Maintenance
93
Span calibration error
pH sensor
1. The pH standard solution is contaminated.
2. The pH-responsive membrane is dirty.
3. The concentration of the reference
electrode's internal solution has changed.
4. The pH-responsive membrane is torn.
pH sensor
1. Replace the standard solution with new
solution.
2. Clean the pH-responsive membrane.
3. Refill the reference electrode's internal
solution.
4. Replace the sensor.
ORP sensor
1. The ORP standard solution is
contaminated.
2. The ORP electrode is dirty.
3. The concentration of the reference
electrode's internal solution has changed.
4. The ORP electrode has failed. ORP sensor
1. Replace the standard solution with new
solution.
2. Clean the ORP electrode.
3. Refill the reference electrode's internal
solution.
4. Replace the ORP electrode.
COND sensor
1. The calibration solution is not correct.
2. The sensor is dirty.
3. The COND sensor has failed.
COND sensor
1. Use the correct calibration solution for
calibration.
2. Clean the sensor.
3. Contact your nearest sales outlet.
TURB sensor
1. There are air bubbles on the cell.
2. The cell window is dirty.
3. The sensor is being affected by ambient
light.
4. The solution is dirty.
5. The TURB sensor has failed.
TURB sensor
1. Shake the sensor probe vigorously.
2. Clean the cell window.
3. Calibrate using the calibration cup provided.
4. Replace the solution with new solution.
5. Replace the TURB sensor.
DO sensor
1. The diaphragm is torn.
2. There are air bubbles in the internal
solution.
3. The DO sensor has failed.
DO sensor
1. Replace the diaphragm with a new one, and fill
the DO sensor with new internal solution.
2. Replace the diaphragm with a new one, and fill
the DO sensor with new internal solution.
3. Replace the DO sensor.
Temperature sensor
The temperature sensor has failed. Temperature sensor
Contact your nearest sales outlet.
Calibration stability
error
The calibration value of an individual
parameter is not stable.
1. The sensor is dirty.
2. The sensor has not adjusted to the
standard solution.
3. The temperature was unstable during
calibration.
1. Clean the sensor.
2. Fill the transparent calibration cup with pH 4
standard solution, and wait for at least 20 minutes
of conditioning before starting calibration.
3. Start calibration after the temperature has
stabilized.
Turbidity calibration
error
Error in turbidity measurement sequence
Turbidity calibration failed. Redo calibration after
removing the displayed error.
Wet check The cable connector is submerged.
Turn the power OFF and disconnect the cable
connector. Wipe or blow-dry off all the water
droplets on the probe. If the error persists,
contact your nearest sales outlet to have the
display and sensor probe repaired.
Power voltage error The display's power board has failed.
This error could also be caused by poor cable
contact. Turn the power OFF and disconnect the
cable connector. Reconnect the connector and
turn the power ON. If the error persists, contact
your nearest sales outlet to have the display and
sensor probe repaired.
Error Cause Solution