User Manual

Pioneer Operator’s Manual (PRELIMINARY) Combustible Gas Transmitter • 21
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 zero or response 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 transmitter is malfunctioning.
Recommended action
1. Verify that the calibration cylinder contains an adequate supply of a fresh test sample.
2. If the calibration/response difficulties continue, replace the detector as described later
in this section.
3. 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.