28 Technical manual | X-am
®
2800 / X-am
®
5800
Maintenance
5. The fresh air calibration is complete when all participating measurement
channels have passed or failed the fresh air calibration.
● Select to confirm the result.
● Select and then confirm the dialogue to discard the result.
● Select to return to the results.
6.7.3 Carrying out a single-gas calibration
Observe the following instructions for single-gas calibration:
● With a zero-point calibration, the zero-point of the selected sensor is set to zero.
● In the case of the span calibration, the sensitivity of the selected sensor is set to
the concentration value of the test gas used.
● In order to perform span calibration on the Dräger IR sensors, a valid zero
calibration must be available (no more than 30 minutes old) otherwise an
acknowledgeable warning is output.
● Use a standard test gas.
Permitted test gas concentration:
Dräger recommends selecting a test concentration in the middle of the
respective measuring range or close to the expected measured value.
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).
1. Connect the test gas cylinder to the calibration adapter (order no. 8318752).
2. Connect the hose to the second connector on the calibration adapter to direct
the test gas to an exhaust or outside.
3. Insert the switched-on gas detector into the calibration adapter and press it
down until it locks into place.
4. Press for approx. 4 s in measuring mode.
Ex-channel of infrared sensor
(X-am 5800 only)
20 to 100 % LEL
1)
2)
5 to 100 Vol%
1)
2)
1) Dependent on measured gas selected.
2) Dependent on measuring range and measurement accuracy.
CO2 channel of infrared sensor
(X-am 5800 only)
0.05 to 5 Vol%
2)
CatEx
O2
The permitted test gas concentration is
displayed by the gas detector during sin-
gle-gas calibration of the sensitivity.
PID HC neo 100 ppm iBut
The permitted test gas concentration of other gases can be read out of the gas
detector by the Dräger CC Vision PC software. The permitted concentrations
depend on the set parameters (e.g. alarm thresholds).
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