During Operation - Dräger X-am 2500 Instructions For Use Manual

WARNING
!
Explosion hazard! To reduce the risk of ignition of a flammable
or explosive atmosphere, strictly adhere to the following warning
statements:
Fractions of catalytic poisons in the measuring gas

(e.g. volatile silicium, sulphur, heavy metal compounds or
halogenated hydrocarbon) can damage the Cat Ex sensor.
If the CatEx sensor can no longer be calibrated to the
target concentration, the sensor must be replaced.
In case of measurements in oxygen-deficient atmosphere

(<8 vol.-% O ) the CatEx sensor may show incorrect
2
displays; in this case, a reliable measurement with a
CatEx sensor is not possible.
In an oxygen enriched atmosphere (>21 vol.-% O

explosion protection cannot be guaranteed; remove
instrument from the explosion-hazard area.
High off-scale readings may indicate an explosive

concentration.
Dräger X-am 2500
4.5

During operation

During operation, the measured values for every measured gas

are displayed.
In the event of an alarm, the corresponding displays, including the

visual, audible and vibration alarms, are activated, see chapter 4.6
on page 28.
If a measuring range is exceeded or not reached, the following

displays are shown instead of the measured value display:
» « (measuring range exceeded) or
» « (below measuring range) or
), the
2
» « (blocking alarm)
If an O sensor is fitted and this sensor measures an O

2
concentration of below 8 vol. %, an error is indicated with »
« on the ex-channel instead of a measured value if the measured
value is below the pre-alarm threshold.
After the measuring range of the TOX measuring channels has

been exceeded temporarily (up to one hour), checking the
measuring channels is not necessary.
NOTICE
i
i
Special states in which there is no measuring operation (quick
menu, calibration menu, warm-up of sensors, password
input) are indicated by a visual signal (slow flashing of the
alarm LED
WARNING
!
If a CatEx sensor is used in the Dräger X-am 2500,
a calibration of zero point and sensitivity must be carried out
after experiencing an impact load that results in a non-zero
display when exposed to fresh air.
Operation
2
).
27