Dräger X-am 8000 Mode D'emploi page 49

The temperature at the measurement location may
deviate from the temperature in the gas detector, which
may influence the measured value display. The correct
functioning of the temperature correction can only be
guaranteed on the gas detector.
To stop measuring with the pump:
1. Loosen the screw on the pump adapter.
2. Remove the pump adapter.
The pump is flushed and the gas detector
automatically switches to diffusion mode.
4.12 Measurements with wizards
The gas detector has wizards for easily preparing the
measurements and for measurement displays
optimised for the measurement.
There are wizards for the following applications:
– Confined space entry: for measuring with a
probe/hose, e.g. In a container
– Leak search: for detecting gas leaks
– Benzene/pre-tube measurement: for using pre-
tubes as a filter for the PID
While the wizard loads, the gas detector is in a special
state.
The wizards are not supported if the gas detector does
not have the required material-specific properties for
the gas to be measured, or if the gas detector is not
within the permissible temperature range (typically 0 to
40 °C for confined spaces and benzene/pre-tube
measurements).
4.13 Carrying out confined space
entry measurements with the
wizard
During confined space entry measurements, the
duration of the measurement (in mm:ss) is displayed for
a maximum of one hour in place of the time. Afterwards,
the time is displayed again. The measurement duration
is restarted after each flow alarm.
Requirements:
– The gas detector is switched on.
– The user is signed in with the corresponding user
level.
To carry out a confined space entry measurement:
1. Sign in with the required user level, if necessary.
X-am
®
8000
2. Select > Confined space in measuring mode (if
configured using the Dräger CC-Vision PC
software). Follow the directions of the wizard.
 The hose length or probe selection is displayed.
3. Select the hose length / probe.
 The leak test starts.
4. Confirm the successful leak test.
 The start dialog for the measurement is
displayed.
5. Place the probe or the hose on the sampling
location.
6. Confirm the dialog to start the measurement.
The hose is flushed, and the remaining flushing time
(flooding time) is displayed. If, during the flushing
time, an alarm threshold is or the permissible
temperature range is exceeded, the countdown is
stopped, the alarm or message is displayed and the
special state is exited.
The displayed flushing time shows the minimum wait
time required for the measurement gas to reach the
sensor from the sampling location in an ideal
scenario. This applies to the use of a Dräger
sampling hose (fluoroelastomer, brand new, dry,
clean) with an internal diameter of 3 mm and
telescopic probes (max. length of 2000 mm) with a
sampling hose (fluoroelastomer, brand new, dry,
clean) with an internal diameter of 5 mm. Other
fixtures (e.g. pre-tube) extend the minimum wait
time and must also be taken into consideration. The
flushing time only applies to the configured
measurement gas.
The flushing times recommended by the gas detector
are ascertained according to the state of technology.
Dräger is not liable for their use. The user is responsible
for evaluating the wait time for their application. After
the wait time expires, evaluation is required to
determine if the measured value is stable or if the wait
time was possibly insufficient. The same applies if the
countdown was stopped unexpectedly.
The measurement of other gasses or vapours than
the selected measurement gas per measuring
channel causes additional wait time which must also
be considered in addition to the minimum wait time.
The confined space entry measurement is displayed
when after the flushing time is complete.
Operation en