Switching Off The Instrument; Before Entering The Workplace; During Operation - Dräger X-am 2500 Instrucciones De Uso

Operation
During the warm-up period of the sensors, the respective

displays of the measured value and the special symbol
flashes (for warning). No alarms are issued during the
warm-up period of the sensors.
2. Press the OK key to cancel the display of the activation sequence.
4.3

Switching off the instrument

Press and hold the OK key and [+] key at the same time until the

countdown 3 . 2 . 1 shown in the display has elapsed.
The visual, audible and vibration alarms are briefly activated
before the instrument is switched off.
4.4

Before entering the workplace

WARNING
!
Before any measurements relevant to safety are made, check
the adjustment with a bump test, adjust if necessary and
check all alarm elements. If national regulations apply,
a bump test must be performed according to the national
regulations. Faulty adjustment may result in incorrect
measuring results, with possible serious consequences.
1. Switch on the instrument. The current measured values are shown
in the display.
2. Observe any warning or fault
The instrument can be operated normally. If the warning message
does not disappear automatically during operation, the instrument
must be serviced after the end of use.
The instrument is not ready to measure and requires maintenance.
3. Check that the gas inlet opening on the instrument is not covered
or dirty.
22
messages.
WARNING
!
Fractions of catalytic poisons in the measuring gas
(e.g. volatile silicon, 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 displays;
2
in this case, a reliable measurement with a CatEx sensor is
not possible.
WARNING
!
In an oxygen enriched
the explosion protection cannot be guaranteed; remove
instrument from the Ex area.
4.5

During operation

During operation, the measured values for every measured gas

are displayed.
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
» «(blocking alarm)
Excess concentrations of flammable materials can lead to a lack

of oxygen.
For O concentrations below 8 vol. %, an error is indicated at the

2
ex-channel by , if the measuring value is below the pre-alarm
threshold.
atmosphere (>21 vol. % O ),
2
Dräger X-am 2500