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Troubleshooting – RKI Instruments 65-2516RK User Manual

Page 13

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65-2516RK Oxygen Transmitter • 9

voltmeter decreased from the normal reading (434 mV).

NOTE:

If the reading does not decrease, calibrate the transmitter as described in
“Calibration” on page 13 of this manual.

3.

Remove the voltmeter leads from the amplifier test points, then secure the junction
box cover to the junction box.

4.

When the display reading rises above the decreasing alarm setpoint, return the
controller to normal operation.

Quarterly

Calibrate the detector as described in “Calibration” on page 13. See the calibration
frequency discussion in the calibration section to determine if a quarterly calibration
schedule fits your needs.

Troubleshooting

The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the oxygen 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 Oxygen Transmitter

Condition

Symptom(s)

Probable Causes

Recommended Action

Fail Condition

• Controller indicates a

fail condition.

• The transmitter wiring

is disconnected or
misconnected.

• The transmitter is

malfunctioning.

1. Verify that the transmitter wiring is

correct and secure.

2. Calibrate the transmitter.

3. If the fail condition continues, replace

the oxygen sensor.

4. If the fail condition continues, contact

RKI for further instruction.

Slow or No
Response/
Difficult or
Unable to
Calibrate

• Transmitter responds

slowly or does not
respond to response
test.

• Unable to accurately

set the fresh air or
zero reading during
calibration.

• Transmitter requires

frequent calibration.

Note: Under “normal”
circumstances, the
transmitter requires
calibration once every
three months.
Some applications may
require a more frequent
calibration schedule.

• The calibration cylinder

is low, out-dated, or
defective.

• The flame arrestor in

the detector housing
cap is wet or clogged
with dirt or other
particulates.

• The transmitter is

malfunctioning.

1. Verify that the calibration cylinder

contains an adequate supply of a
fresh test sample.

2. Check the detector housing cap to

determine if the flame arrestor is wet
or dirty. Clean or replace if necessary.

3. If the calibration/response difficulties

continue, replace the oxygen sensor.

4. If the calibration/response difficulties

continue, contact RKI for further
instructions.