34
Maintenance
Calibrating / Adjusting the Device
Allow the sensors to warm up before the calibration / adjustment!
Warm-up time: refer to the Instructions for Use of the installed DrägerSensors (on CD).
Calibration interval:
— Observe the relevant specifications in the Instructions for Use of the installed
DrägerSensors.
— For critical applications, observe the recommendations in EN 50073
*)
or EN 45544-4
**)
and national regulations.
— Improve the zero point accuracy – carry out the fresh air calibration, page 35.
— Set the sensitivity of all sensors to the value of the test gas – carry out the 1-button
calibration, page 37.
— Set the sensor sensitivity to a value of the test gas – calibrate/adjust the sensitivity,
page 39.
*)
EN 50073 – Guidelines for selection, installation, use and maintenance of devices for the detection and
measurement of flammable gases and oxygen.
**)
EN 45544-4 – Electrical devices for the direct detection and direct concentration measurement of toxic
gases and vapours – Part 4: Guidelines for selection, installation, use and maintenance.
CAUTION:
Do not inhale the test gas. Observe the hazard warnings of the relevant Safety Data
Sheets as well as the Instructions for Use of the used DrägerSensors.
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