FE ZAJ, Руководство по обслуживанию

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12
TN512955-E

Err3 Input over error (INPUT OVER ERR)
This code is displayed when the sensor signal is large.
Countermeasures
This error relates to reference gas, sample gas and range settings.
First, check if the range settings are proper.
Check if the reference gas is properly selected within the range to be set. (Starting from 0, N
2
gas is
selected. From 21, air gas is selected, and from 100, O
2
is selected.) If the reference gas is
correctly selected, check if there is possibility that any of the sample gases exceeds the range (oxygen
is included too much). If the sample gas is beyond the range, change the range.

Err 4 Input under error (INPUT UNDER ERR)
This code is displayed when the sensor signal is larger in the negative direction.
Countermeasures
This error relates to reference gas, sample gas and range settings.
Check for the range settings.
Check if the reference gas is properly selected within the range to be set. (Starting from 0, N
2
gas is
selected. From 21, air gas is selected, and from 100, O
2
is selected.) If it is properly selected, check
if some gas among the sample gases is included as set in the range, or if even a small quantity of
oxygen is contained in the reference gas, for example.
If the sample gas is not included as set in the range, change the reference gas and range.

Err 5 Output device error (OUTPUT DEVICE ERR)
This code is displayed when a response is not received from an output printed circuit board.
Countermeasures
Check the cable between the CPU printed board and output printed board. Check if there is poor
contact between the connector and receptacle or if the cable is disconnected.

Manual zero calibration error (MANUAL ZERO CAL ERR)
When zero calibration has been performed in the manual mode (via key operation), this code appears
when calibrated values fluctuate 20% larger than previous calibrated values.
Countermeasures
Check that the range and calibration concentration settings are proper.
Check the sampling system and calibration gas.
Caution) If the range settings have changed, an error may be displayed in an initial calibration.
But, this is not an error. Perform zero-point calibration forcedly in the manual zero
calibration.

Manual span calibration error (MANUAL SPAN CAL ERR)
When span calibration has been performed in the manual mode (via key operation), this code appears
when calibrated values fluctuate 20% larger than previous calibrated ones.
Countermeasures
Check that the range and calibration concentration settings are proper.
Check the sampling system and calibration gas.
Caution) If the range settings have changed, an error may be displayed in an initial calibration.
But, this is not an error. Perform span-point calibration forcedly in the manual
span calibration.