horiba U-51, Инструкция по эксплуатации

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4 Maintenance
94
Turbidity lamp power
voltage error
The remaining battery level is low.
Turn the power OFF and replace the display's
batteries with new ones.
Display RTC error The time display is incorrect. Replace the coin battery.
Display FROM error Internal IC failure
Contact your nearest sales outlet to have the
control unit repaired.
Display EEPROM
error
Internal IC failure
Contact your nearest sales outlet to have the
control unit repaired.
Display save error Insufficient memory space
Move data from the display, use the data
operations screen to delete data, then redo the
measurement.
Measurement
sequence error

When the measurement item is turbidity
1. The battery power is low.
2. The wiper is not operating normally.
3. The light source lamp is not lit.

If items other than turbidity are also
displayed
4. Board failure
1. Replace the batteries with new ones.
2. Check there are no obstacles near the wiper,
then redo the measurement. If the error persists,
the motor will need to be replaced. Contact your
nearest sales outlet to have the sensor probe
repaired.
3. Wipe off any water droplets on the probe, then
remove the turbidity sensor. Check there are no
water droplets around the turbidity sensor
connector, then mount the sensor again. If the
error persists, replace the turbidity sensor.
4. Contact your nearest sales outlet to have the
sensor probe repaired.
Out of measurement
range The attempted measurement is outside the
measurement range supported for that item. The system must be used within its supported
measurement ranges.
Last zero-point
calibration invalid
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.
Out of measurement
range
[See above.] [See above.]
Last zero-point
calibration invalid
Error Cause Solution