RKI Instruments GD-K7D2 (24 VDC) User Manual
Page 20
16 • Model GD-K7D2 (24 VDC) Sample Draw Transmitter
•
The GD-K7D2’s ON/OFF switch is in the OFF position.
•
The GD-K7D2 is malfunctioning.
Recommended action
1.
At the GD-K7D2, set the correct flow rate with flow rate potentiometer.
2.
If you cannot set the correct flow rate, check the sample lines for obstructions or kinks.
3.
Verify that the GD-K7D2 wiring is correct and secure. The Installation section of this
manual describes GD-K7D2 wiring connections.
4.
Verify that the ON/OFF switch is in the ON position.
5.
Verify that the 24 VDC to the GD-K7D2 is on and operational.
6.
Calibrate the GD-K7D2 as described in the Calibration section of this manual.
7.
If the fail condition continues, contact RKI Instruments, Inc. for further instruction.
Slow or No Response/Difficult or Unable to Calibrate
Symptoms
•
The GD-K7D2 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 GD-K7D2 requires frequent calibration.
NOTE:
Under “normal” circumstances, the GD-K7D2 requires calibration every 3 - 6
months. Some applications may require a more frequent calibration schedule.
Probable causes
•
The calibration cylinder is low, out-dated, or defective.
•
The GD-K7D2’s flow rate is too low because of obstructed sample line, failed pump,
etc.
•
The GD-K7D2 is malfunctioning.
Recommended action
1.
Verify that the calibration cylinder contains an adequate supply of a fresh test sample.
2.
If necessary, set the correct flow rate with the flow adjust potentiometer.
3.
If you cannot set the correct flow rate, check the sample line for obstructions or kinks.
4.
If a demand flow regulator is used for calibration, try a different demand flow
regulator or a gas bag setup and see if the calibration/response difficulties continue.
5.
If the calibration/response difficulties continue, replace the sensor.
6.
If the calibration/response difficulties continue, contact RKI Instruments, Inc. for
further instruction.