horiba GA-370, Instruction Manual

Page: 75 / 95

6 Troubleshooting
59
6.2.2 Low sensitivity
6.2.3 Noise and reading variations
6.2.4 Slow response speed
Cause Remedial action Reference
No gas is flowing.
Gas flow rate is insufficient.
Check whether tubes to the analyzer is choked
or disconnected.
―
Apply pressure to the sample gas and
reference gas inlets.
―
Check that the main valve of the span gas
cylinder is open.
―
Check the flow rate. page 16
Check whether the filters are dirty. If they are,
replace them.
page 57
Reference gas contains impurities.
If impurities are found to be contained in the
gas after checking with the zero gas purifier
you provided, replace the reference gas.
―
Span gas is incorrect.
Use a span gas that is suitable for the
component to be measured.
―
Gas is leaking.
Replace the joints or otherwise repair the
piping.
―
Others Contact HORIBA or local representative. ―
Cause Remedial action Reference
Analysis part is not attached to the
analysis part base properly.
Reattach the analysis part. page 73
Springs suspending the analysis part
are not attached properly. Adjust or replace the analysis part suspension
fixtures.
page 73
Gas is leaking.
Replace the joints or otherwise repair the
piping.
―
Vibration levels of the installation
location are high. Use the analyzer in a location with little
vibration.
―
Calibration span gas concentration
setting and cylinder gas concentration
do not match.
Set the span gas concentration correctly and
then perform the calibration again.
page 21
Others Contact HORIBA or local representative. ―
Cause Remedial action Reference
Sample gas, reference gas, or span
gas is not flowing at the specified flow
rate.
Adjust the flow rate. page 16
Gas is leaking.
Replace the joints or otherwise repair the
piping.
―
Others Contact HORIBA or local representative. ―