RKI Instruments GX-2001 Manual - Manual (Page 36)

31 • Maintenance Model GX-2001 Operator’s Manual
• The LCD shows
abnormally high
or low readings
but other gas
detection
instruments do
not.
• The Model GX-
2001 may
need to be
recalibrated.
• The sensor for
the affected
channel(s)
may need
replacement.
1. Recalibrate the unit.
2. Replace the sensor for the
affected channel(s).
3. If the difficulties continue,
contact RKI Instruments for
further instruction.
• “FAIL” displays
during auto
calibration or
unable to set the
response
readings during
single
calibration.
• The auto
calibration
values may not
match the
cylinder gas
concentrations.
(auto
calibration
only)
• The H
2
S
removal filter
disk or the
charcoal filter
disk over the
CO sensor are
saturated.
• The sample
gas is not
reaching the
sensor
because of a
bad connection
• The calibration
cylinder may
be out of gas
or is outdated.
• The sensor for
the affected
channel(s)
may need
replacement.
1. Check all calibration tubing
for leaks or for any bad
connections.
2. Make sure the Model GX-
2001 has been properly set
up for calibration.
3. Change the charcoal filter
disk and the H
2
S removal
filter over the CO sensor
diffusion port.
4. Verify that the calibration
cylinder contains an
adequate supply of fresh
test sample.
5. If the fail condition
continues, replace the
sensor(s).
6. If the difficulties continue,
contact RKI Instruments,
Inc. for further instruction.
Table 6: Troubleshooting the Model GX-2001
Symptoms
Probable
Causes
Recommended Action