The following table lists the menu items. Detailed descriptions can be found in the chapters 4.3 Calibration,
4.4 Maintenance and Info and 4.5 Password.
Menu item Text Password?
M-01
Calibration Yes
M-02
ZERO Calibration Yes
M-03
Show Test Gas Concentration No
M-04
Setup Calibration Yes
M-05
Sensor Exchange Yes
M-06
LCD and LED Test No
M-07
Loop Test Yes
M-08
Device Info No
M-09
Sensor Info No
M-10
Changing the Range Yes
M-14
Deadband (Zero window) Yes
M-00
Reset Alarm Yes
4.3 Calibration
WARNING!
The test gases used for calibration are possibly posing a health risk. Proper ventilation or extraction has to be
ensured.
Failure to follow this warning can result in serious personal injury or death.
General
The calibration must be done at regular intervals in accordance with applicable national and regional
regulations.
The device is calibrated at the factory. Nevertheless, it is recommended to re-calibrate the device after
installation. The frequency of calibration depends on the duration of use and the chemical exposure of the
sensor. New sensors must be -calibrated frequently until it is clear from the calibration data that they have
stabilised. Suitable regulators and pipes for calibration must be used.
In case of high dust or water pollution is expected then the calibration intervals should be shortened.
Exposure to polar solvents may reduce the catalytic combustible gas sensors response to hydrogen and
hydrocarbons resulting in erroneously low readings for hydrogen and hydrocarbons. Calibration of the
sensors with a surrogate gas will not detect the reduction in response. Customers using the catalytic
combustible gas sensors to detect hydrogen and hydrocarbons in an environment that may contain polar
solvents must:
• Calibrate their sensors with the target gas. Do not use a surrogate gas for calibration.
• After exposure to polar solvents, the sensor must be recalibrated using the target gas, independent
of the calibration interval, and a gas/function check shall be performed 24 hours after calibration to
verify sensor response and accuracy.
GB PrimaX 20
4 Operation
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