Maintenance Table; Instructions For Use - Dräger X-am 2500 Instrucciones De Uso

Maintenance
9. 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.
When the displayed measurement value is stable (after at least
120 seconds):
a. Press the OK-key to carry out the calibration.
The display containing the current gas concentration changes
with the display OK.
b. Press the OK-key or wait for approx. 5 seconds to end the
calibration/adjustment of this measuring channel.
Potentially, the next measuring channel will be offered for
calibration.
After the calibration/adjustment of the last measuring channel,
the instrument changes to the measuring mode.
c. Close the test gas cylinder valve and remove the instrument
from the calibration cradle.
If a fault occurred during the span calibration/adjustment:
The fault message appears and

respective sensor instead of the measured value.
In this case, repeat the calibration/adjustment.

If necessary, change the sensor.

Notice for the adjustment of the ex-channel to nonane as
a measuring gas:
During the calibration of the ex-channel, propane can be used as

a substitute calibration gas.
When using propane to adjust the ex-channel to nonane,

the display must be set to twice the used test gas concentration.
Notice for the use in subsurface mining:
For the calibration of the ex-channel to the measuring gas

methane, the display of the instrument must be set to a value of
5 % (relative) lower than the used test gas concentration.
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5
5.1
The instrument should be inspected and maintained annually by suitably
qualified persons (see: EN 60079-29-2 – Guidelines for selection,
installation, use and maintenance of instruments for the detection and
measurement of flammable gases and oxygen. EN 45544-4 – Electrical
instruments for the direct detection and direct concentration
measurement of toxic gases and vapours – Part 4: Guide for selection,
installation, use and maintenance and national regulations).
Recommended calibration interval for measuring channels Ex, O
H S and CO: 6 months. Calibration intervals of other gases: see
2
Instructions for Use of the respective DrägerSensors.
5.2
The instrument does not need any special care.
Dirt and deposits can be removed from the instrument by washing

is displayed for the
it with cold water. A sponge can be used for wiping if necessary.
i i
Carefully dry the instrument with a cloth.

Maintenance

Maintenance table

Cleaning
NOTICE
Abrasive cleaning tools (brushes etc.), cleaning agents and
cleaning solvents can destroy the dust and water filters.
,
2
Dräger X-am 2500