Carrying Out The Fresh Air Calibration/Zero-Point Calibration - Dräger X-am 5600 Technical Handbook

Carrying out the fresh air calibration/zero-point calibration

To improve the zero point accuracy, you can carry out a fresh air calibration/zero-point
calibration.
If none of the sensors fitted permits calibration with fresh air (e.g. only O
IR-CO ), fresh air calibration is not offered as a menu function.
2
— Calibrate the instrument to fresh air calibration/zero-point calibration, free of
measured gases or other interfering gases.
— All sensors are included in the fresh air calibration/zero-point calibration.
Sensors which have not warmed up or which are faulty prevent a calibration/
adjustment.
In the case of sensors which are in the warm-up phase, the message » 159 « is
displayed with the special symbol »
In the case of a sensor or instrument error, the message » 109 « is displayed with
the special symbol »
The message is cleared after 5 sec. and the function is available again in the menu.
— During the fresh air calibration /zero-point calibration, the zero point of all sensors (with
the exception of the DrägerSensors XXSO
In the case of the DrägerSensor XXS O
 Switch on the instrument.
Depending on instrument configuration:
 Call the quick menu and select the
Fresh Air Calibration/zero-point
calibration function, page 16.
or
 Call the calibration menu and select
the Fresh Air Calibration /zero-point
calibration function, page 18.
— The current gas concentration values
flash.
When the measured values have
stabilized:
 Press the key to perform the fresh
OK
air calibration/zero-point calibration.
1) Fresh air calibration / zero-point calibration is not supported by the DrägerSensor DUAL IR CO
the DrägerSensor IR CO
these sensors can be conducted using the Dräger CC Vision software. To do so, a suitable zero
gas that is free of carbondioxide and ozone (e.g. N
48
NOTICE
« (for warning message).
« (for a fault message).
, the display is set to 20.9 vol.-%.
2
or the DrägerSensor XXS O
2
, DUAL IR CO and IR CO
2 2
ch
4
%LEL
O
2
Vol%
CO
ppm
H S
2
ppm
NH
3
ppm
. A zero-point calibration / adjustment of
3
) should be used.
2
, only
3
1)
) is set to 0.
2
,
2