
Maintenance and service
6.6 Other errors
FIDAMAT 6-G
6-8
Operating instructions, 07/2006, A5E00478463
No.
Fault signal
Explanation
Possible causes
Remedy
S14
Measured value
>
Characteristics
end value
Measured value is
greater than
characteristics end
value (+5 %)
•
Incorrect
calibration
•
Wrong test gas
•
Sample gas
concentration too
high
•
Repeat calibration
•
Check test gas
•
Check measuring range
S15
Calibration
terminated
During an Autocal,
the process was
terminated
See also
Relay allocation (function 71) (Page 5-40)
Binary inputs (function 72) (Page 5-42)
Save data, load (function 75) (Page 5-50)
Error on/off (function 87) (Page 5-60)
Start-up state (function 91) (Page 5-62)
6.6
Other errors
Regularly calibrate the device at the zero point (function 20) and with regard to span
(function 21) with the corresponding test gases in accordance with the drift specifications.
Make sure the gas preparation is clean.
A larger zero drift is usually a sign that residue or dust particles have deposited in the FID.
The following errors are not signalized or stored by the device, but are only detectable based
on characteristic measured values.
Table 6-3
Other faults
Fault
Possible cause and its remedy
Large zero drift
•
Check gas preparation
•
Clean FID
Large span drift
•
Detector leaky
•
FID nozzle defective
Span depends strongly on flow
Exhaust gas line is congested/clogged, e.g. by
water condensation
See also
Zero calibration (function 20) (Page 5-13)
Span calibration (function 21) (Page 5-13)
Cleaning the device (Page 6-3)
Technical data of the FIDAMAT 6 series (Page 7-1)