Adjusting The Sensitivity For An Individual Measuring Channel - Dräger X-am 5600 Instrucciones De Uso

The fresh-gas adjustment / zero-point adjustment is not supported by the
DrägerSensor DUAL IR CO , DrägerSensor IR CO
2
XXS O . A zero-point adjustment of these sensors can be made with the
3
Dräger CC Vision PC software. A suitable zero gas free from carbon dioxide
and ozone (e.g. N ) must be used.
2
 Switch on instrument.
 Press the [+] key three times to display the icon for fresh air calibration »
 Press the [OK] key to start the fresh air calibration.
– The measured values flash.
When the measured values have stabilized:
 Press the [OK] key to perform the fresh air calibration.
– The display containing the current gas concentration changes with the
display »OK«.
 Press the [OK] key to exit the fresh air calibration function or wait for
approx. 5 seconds.
If a fault has occurred during the fresh air adjustment:
– The fault message » « appears and »
respective sensor instead of the measured value.
 In this case, repeat the fresh air adjustment. If necessary, have the sensor
replaced by qualified personnel.
Adjusting the sensitivity for an individual
measuring channel
A potentially activated H offsetting is automatically temporarily deactivated
2
during a manual adjustment, a PC calibration or an automatic Bump Test for
the relevant duration.
– The span adjustment can be carried out selectively for individual sensors.
– In the case of the span adjustment, 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:
DUAL IR Ex
20 to 100 %LEL
IR Ex
26
NOTICE
or the DrägerSensor
2
« is displayed for the
NOTICE
1) 2) 1) 2)
/ 5 to 100 vol. %
DUAL IR CO
2 0.05 to 5 vol. %
IR CO
2
O 10 to 25 vol. %
2
CO 20 to 999 ppm
H S 5 to 99 ppm
2
H HC 0.5 to 4.0 vol. %
2
Test gas concentrations of other gases: see Instructions for Use of the
respective DrägerSensors.
«.
1) Depending on the selected data set.
2) Depending on the measuring range and the measuring accuracy.
 Connect the test gas cylinder with the calibration cradle.
 Vent the test gas into a fume cupboard or into the open air (with a hose
connected to the second connector of the calibration cradle).
Risk to health! Never inhale the test gas.
Observe the hazard warnings of the relevant Safety Data Sheets.
Switch on the instrument and insert it into the calibration cradle.

 Press the [+] key and keep it pressed for 5 seconds to open the calibration
menu, enter the password (password on delivery = 001).
 Use the [+] key to select the single gas adjustment function. The symbol for
span adjustment » « flashes.
 Press the [OK] key to start the channel selection.
In the case of the CO channel there is a 2-stage calibration routine:
2
The zero adjustment takes place first and is then followed by the span calibration.
– The display shows the gas of the first measuring channel, e.g. »CH
 Press the [OK] key to start the adjustment function of this measuring channel,
or use the [+] key to select another measuring channel (O
CO - ppm, etc.).
– The test gas concentration is displayed.
 Press the [OK] key to confirm the test gas concentration or use the [+] key
to change the test gas concentration and complete the process by pressing
the [OK] key.
– The measurement value flashes.
 Open the test gas cylinder valve to let gas flow over the sensor with a
volume flow of 0.5 l/min.
– The displayed, flashing measurement value changes to the value according
to the supplied test gas.
2)
WARNING
NOTICE
- Vol.-%, H
2 2
LEL«.
4
S - ppm,