Dräger MQG 02 0 Series Technical Manual

Technical manual | X-am
®
2800 / X-am
®
5800 25
Maintenance
5. Wait until the detector displays the test gas concentration with sufficient
tolerance. (The evaluation is carried out during the advanced bump test by the
gas detector.)
 Ex: ±20 % of the test gas concentration
 IR Ex: ±20 % of the test gas concentration (X-am 5800 only)
 IR CO
2: ±20 % of the test gas concentration (X-am 5800 only)
 O2: ±0.6 Vol%
 TOX: ±20 % of the test gas concentration
6. Close the test gas cylinder valve and remove the gas detector from the
calibration adapter.
7. If the concentrations have fallen below the A1 alarm thresholds, the gas detector
automatically switches back to measuring mode after 30 s at the latest.
Further steps
If the displays are outside of the above-mentioned ranges, have the gas detector
calibrated by service personnel.
6.5 Perform a bump test with the Bump Test Station
The Dräger CC-Vision PC software can be used to configure whether a quick or
advanced bump test should be performed.
Dräger recommends using the extended bump test for cross calibrations (see the
Dräger X-dock instructions for use).
X-am 2800 bump test with CC-Vision and Bump Test Station: Alarm triggered
approx. 3 s after A1 threshold exceeded, if error already present.
The bump test only starts from measuring mode. Not from a menu or similar.
Prerequisites
– The gas detector is activated for the automatic bump test with the Dräger CC-
Vision PC software.
– Measuring channels that are to be used for the automatic bump test have been
configured. All measuring channels are used here as standard.
– A suitable test gas cylinder is available, e.g. test gas cylinder (order number
68 11 130) with the following mixed gas ratios: 50 ppm CO, 15 ppm H
2S,
2.5 Vol% CH4, 18 Vol% O2 (other test gas cylinders can be added on request)
WARNING
Health hazard from test gas
Breathing in of test gas can be harmful to health or lead to death.
► Do not inhale the test gas.
► Observe risks connected with the test gas, hazards notes and safety advice (see
for example safety data sheets, instructions on the testing media).
Dräger recommends a test gas concentration of <60 %LEL for CatEx sensors
and a measuring range of 0 % to 100 %LEL.

Dräger MQG 02 0 Series Specifications

General

Brand	Dräger
Model	MQG 02 0 Series
Category	Gas Detectors
Language	English