Calibrate The Gas Detector; Notes On Calibration; Performing A Fresh Air Calibration - Dräger X-am 2800 Gebrauchsanweisung

5.6

Calibrate the gas detector

5.6.1 Notes on calibration

WARNING
Incorrect measured values
Incorrect calibration means that alarms may not be triggered or only with a
delay.
► Always carry out the clean air/zero calibration prior to the span calibration.
If the measured or calibration gas is changed, the affected channel must be
calibrated.

5.6.2 Performing a fresh air calibration

Observe the following instructions for fresh air calibration:
● To improve accuracy, a fresh air calibration must be carried out if a zero
deviation exists.
● For the fresh air calibration, the display on the DrägerSensor XXS O
XXS O PR is set to 20.9 Vol%.
2
Prerequisites
– The fresh air calibration can only be carried out if at least one sensor
supports fresh air calibration.
– The fresh air must be free of measured or interfering gases.
– The gas detector is switched on and warm-up phases 1 and 2 are complete.
To carry out a fresh air calibration:
1. Switch on the gas detector.
2. Call up fresh air calibration (depending on configuration):
Via the Quick menu:
● Press
● Select and confirm fresh air calibration
Via the menu:
a. Press
b. Enter and confirm the password.
c. Select and confirm fresh air calibration
 All measurement channels involved in the fresh air calibration flash.
®
X-am 2800
3x in measuring mode.
for approx. 4 s in measuring mode.
Maintenance
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