RKI Instruments 65-2397SS, Руководство оператора

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65-2397SS CO
2
Transmitter • 15
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the CO
2
transmitter.
NOTE: This troubleshooting guide describes transmitter problems only. See the controller operator’s
manual for problems you may encounter with the controller.
Table 2:Troubleshooting the CO
2
Transmitter
Condition Symptom(s) Probable Causes Recommended Action
Fail
Condition
• Controller
indicates a fail
condition.
• The transmitter
wiring is
disconnected or
misconnected.
• The wiring from the
detector to the
amplifier is
disconnected or
misconnected.
• The plug-in sensor is
not properly plugged
into the three-socket
pattern in the
detector housing
body.
• The transmitter’s
zero reading is low
enough to cause a
fail condition.
• The transmitter is
malfunctioning.
1. Verify that the transmitter wiring
to the controller is correct and
secure.
2. Verify that the wiring from the
detector to the amplifier is correct
and secure.
3. Confirm that the plug-in sensor is
properly installed.
4. Perform a zero adjustment. A full
calibration is recommended.
5. If the fail condition continues,
replace the sensor as described
later in this section.
6. If the fail condition continues,
contact RKI for further
instruction.
Slow or No
Response/
Difficult or
Unable to
Calibrate
• Unable to
accurately set the
zero or response
reading during
calibration.
• Transmitter
requires frequent
calibration.
Note: Under
“normal”
circumstances, the
transmitter requires
calibration once
every 6 months.
Some applications
may require a more
frequent calibration
schedule.
• The calibration
cylinder is low, out-
dated, or defective.
• The calibration gas
is not an appropriate
concentration.
• The membrane on
the detector housing
cap is blocked with
dirt or some other
particulate matter.
• The transmitter is
malfunctioning.
1. Verify that the calibration cylinder
contains an adequate supply of a
fresh test sample.
2. Check the face of the detector
housing cap and remove any
particulate contamination from
the hydrophobic membrane if
necessary.
3. Verify that the calibration gas
concentration is appropriate for
the transmitter.
4. If the calibration/response
difficulties continue, replace the
sensor as described later in this
section.
5. If the calibration/response
difficulties continue, contact RKI
for further instruction.