9
GG-H2-EC
Maintenance
The GG-H2 was designed for long life and minimal
maintenance. For proper operation it is essential
that the test and calibration schedule be adhered to.
Calibration Technologies recommends the following
maintenance schedule.
Maintenance Guidelines:
• The sensor is shipped with a factory calibration.
Sensor should be calibrated 6 months from
purchase date.
• Calibrate the detector at least once every 6 months.
•
Calibration should be performed with certified
calibration gas. Calibration kits and replacement
cylinders are available from Calibration
Technologies.
• In highly critical areas, a response test should be
performed between calibrations to verify proper
sensor response and alarm functions. This can be
done with calibration gas. The response test is not
required if multiple electrochemical sensors are
installed in the same room.
• All tests and calibrations must be logged.
• Always disconnect power at the controller before
performing any wiring at the sensor.
Sensor Life:
These electrochemical cells are extremely
reliable, but several things can cause the cell chemicals
to become depleted including:
• a period of time
• exposure to high temperatures
• continuous, long term exposure to hydrogen
When the cell becomes depleted, the unit will give no
indication of failure other than that the sensor will not
respond. For this reason it is
absolutely essential
that these sensors be calibrated on a regular basis .
When the cell becomes depleted, a replacement cell
can be obtained from Calibration Technologies. Simply
unplug the cell’s ribbon cable from the transmitter,
pull the old cell from the spring clip, discard the old
cell and replace it with a new one. The sensor can
be span calibrated after a 5 minute warm-up period,
but best to wait 12 hours before zeroing due to
acclimation.
Replacement cell order#:
GG-H2-EC-RC
