RKI Instruments Pioneer 4W - Manual (Page 96)

Oxygen Transmitter • 20 Pioneer Operator’s Manual (PRELIMINARY)
Slow or no response/difficult or unable to calibrate
Symptoms
• The transmitter responds slowly or does not respond during the monthly response
test.
• Unable to accurately set the fresh air or zero reading during the calibration procedure.
• The 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.
Probable causes
• The calibration cylinder is low, out-dated, or defective.
• The detector junction box’s diffusion port is obstructed.
• The transmitter is malfunctioning.
Recommended action
1. Verify that the calibration cylinder contains an adequate supply of a fresh test sample.
2. Verify that the detector junction box’s diffusion port is not obstructed.
3. If the calibration/response difficulties continue, replace the detector as described later
in this section.
4. If the calibration/response difficulties continue, contact RKI Instruments, Inc., for
further instruction.
No display reading
Symptoms
• The transmitter is installed, but the display screen is blank for that channel.
NOTE: If the display screen is blank for all channels, see the troubleshooting guide in
Chapter 5, Maintenance.
Probable causes
• The channel status setting is set at NO SENSOR/AMP.
Recommended action
1. Enter the Channel Setup program, and change the channel status setting to ACTIVE/
ONLINE
or SILENCED/OFFLINE.
2. If the display reading difficulties continue, contact RKI Instruments, Inc., for further
instruction.