horiba U-51, Инструкция по эксплуатации

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4 Maintenance
92
Zero-point 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.
COND sensor
1. There is moisture on the sensor.
2. The sensor is dirty.
3. The COND sensor has failed. COND sensor
1. Blow-dry the moisture off the sensor.
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. There are air bubbles in the internal
solution.
2. 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 DO sensor.
Water depth sensor
1. The water depth sensor is dirty.
2. The water depth sensor has failed. Water depth sensor
1. Clean the water depth sensor.
2. Contact your nearest sales outlet.
Error Cause Solution