Carrying Out The Fresh Air Calibration - Dräger X-am 1100 Technical Handbook

Carrying out the fresh air calibration

To improve the zero point accuracy, you can
carry out a fresh air calibration.
— Calibrate the device to fresh air, free of
measured gases or other interfering
gases.
— All the sensors are included in the fresh
air calibration. Sensors which have not
warmed up or which are faulty prevent a
calibration.
In the case of sensors which are in the
warm-up phase, the message » 159 « is
displayed with the special symbol »
(for warning message).
In the case of a sensor or device error, the
message » 109 « is displayed with the
special symbol »
The message is cleared after 5 seconds
and the function is available again in the
menu.
— During the fresh air calibration, the zero
point of all the sensors (with the
exception of the DrägerSensor XXS O
is set to 0.
In the case of the DrägerSensor XXS O
the display is set to 20.9 vol. %.
Switch on the device.
Depending on device configuration:
Call the quick menu and select the "fresh
air calibration" function, page 15.
or
Call the calibration menu and select the
"fresh air calibration" function, page 16.
— The current gas concentration values
flash.
Press the key to start the fresh air
OK
on
calibration.
«
« (for fault message).
)
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Maintenance
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