Calibrating The Sensitivity For An Individual Measuring Channel - Dräger X-AM 5000 Technical Manual

Maintenance

Calibrating the sensitivity for an individual measuring channel

−
The span calibration can be carried out specifically for individual sensors.
−
In the case of the span calibration, the sensitivity of the selected sensor is set to the
value of the test gas used.
−
Use a standard test gas.
Allowed test gas concentration:
Ex: 40 to 100 %LEL
O 10 to 25 vol. %
2
CO: 20 to 999 ppm
H S: 5 to 99 ppm
2
Test gas concentration of other gases:
refer to the Instructions for Use of the
respective DrägerSensors.
•
Connect the test gas cylinder with the
calibration cradle.
•
Vent the test gas into a fume cup-
board or into the open air (with a hose
connected to the second connector of
the calibration cradle).
CAUTION
Do not inhale the test gas. Risk to
health!
Observe the hazard warnings of the
relevant Safety Data Sheets.
•
Switch on the device and insert it into the calibration cradle.
•
Press and hold the [ + ] key for 5 seconds to call the calibration menu, enter the
password and select the single gas calibration function, page 17.
•
Press the key to start the channel
OK
selection.
−
The display flashes the gas of the first
measuring channel, e.g., » Ex - %LEL
«.
•
Press the key to carry out the cali-
OK
bration of this measuring channel, or
•
Use the key to select another
measuring channel (O
- ppm or CO - ppm).
42
- vol. %, H S
2 2
0.5 L/min
X-am 5000
CH
4
%LEL
O
2
Vol%
CO
ppm
H S
2
ppm
0
ch
4
%LEL
CO
2
ppm
O
2
Vol%
CO
ppm
H S
2
ppm
NH
3
ppm