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Operators Manual Model PT2000/H Series Gas Monitor Rev 2. January 2014
Check the voltages on
SENSOR
terminal as follows:
Place the black (ground) probe of the volt meter on the green wire (
). With the red
voltmeter probe check to voltage on red wire (+) terminal to be +5 volts
0.1. Similarly
place the red probe on the black wire and verify the voltage to be 5 volts
0.1.
Error 3: Calibration Time Out:
After initial adjustment the unit waits maximum of 60 seconds for the calibration gas.
Calibration is aborted if no calibration gas is detected by the microprocessor. Check for
the leaks in the calibration apparatus and check the flow rate. Always use a calibration
adapter and proper flow rate. A completely dead sensor could also result in this error.
Error 4: Not enough Sensor reaction to gas:
At the end of the calibration cycle the microprocessor checks for the adequate sensor
reaction to the calibration gas. This error code is displayed when sensitivity of the
sensor to the calibration gas applied is extremely low and the microprocessor is
unable to make final adjustments. This error can also occur when there is insufficient
flow of the calibration gas to the sensor. Also check if the calibration gas has not
expired and be sure to use the calibration adapter and check the calibration apparatus
for leaks.
Error 5: Sensor May be bad:
The sensor detected the flow of the calibration gas but the sensitivity to the gas is not
consistent. Double check the wires connecting the sensor head. And repeat the
calibration procedure after few minutes. If same error reoccurs the sensor head
assembly must be replaced.
