Product specifications

8 TROUBLESHOOTING
87
Q The output signal level is too low.
Note
For replacing parts, contact us.
Q The output signal level is too high.
Q The readings are not stable enough.
Note
For replacing parts, contact us.
Possible cause Remedial action Reference
The range not set improperly. Set the range properly or select the automatic range. page 52
The zero calibration is not
accurate enough.
Perform the calibration again. page 27
The span calibration is not
accurate enough.
Perform the calibration again. page 28
The performance of the DO unit
has deteriorated.
Replace catalyst. ---
The SV unit does not work. Replace the SV unit. ---
The sample inlet or outlet has
pressure loss.
Check the piping for clogging near the sample inlet or
outlet.
Rectify the piping for the sample inlet and outlet.
---
The filter is contaminated.
Replace the filter.
Replacement period of the filter element: Every 2 weeks
page 78
Possible cause Remedial action Reference
The range not set improperly. Set the range properly or select the automatic range. page 52
The zero calibration is not
accurate enough.
Perform the calibration again. page 27
The span calibration is not
accurate enough.
Perform the calibration again. page 28
Possible cause Remedial action Reference
The flow rate is unstable.
Check the filter. If the filter is found contaminated,
replace it.
Replacement period of the filter element: Every 2 weeks
page 78
Check the pump and diaphragm. If they have been used
exceeding their replacement time, replace them.
Replacement period of the diaphragm: Every year
Replacement period of the pump unit: Every 2 years
---
The sample inlet or outlet has
pressure loss.
Rectify the piping for the sample inlet and outlet. page 3