Dräger X-am 3500 Mode D'emploi page 39

Option
Intervals
Capture ranges
Battery
Approvals
(X-am 8000 only with the
Bluetooth® module)
4.10 Monitoring
4.10.1 Special features when measuring
with the pump
NOTICE
Magnetic media may be damaged!
The pump adapter and calibration adapter contain a
magnet which may delete data from a magnetic stripe.
► Do not bring magnetic media (e.g. credit cards) into
close proximity to the pump adapter or calibration
adapter.
When using long hoses (from 10 m):
– Ensure strain relief for the weight of the hose.
– Make sure that the intake hose is not kinked.
X-am
Description
The following intervals are
available:
– Select the bump test
interval (Bumptest
interval) (if configured)
to display the days
remaining until the next
bump test for all chan-
nels. For details, select
and confirm the
respective channel.
– Select Calibration
interval to display the
days remaining until
the next calibration for
all channels. For
details, select and con-
firm the respective
channel.
– Select User life time
to display the remain-
ing service life.
Capture ranges are dis-
played (if configured).
The battery state of
charge is displayed
(large).
Approval information is
displayed (e-Label).
®
3500
– The max. hose length is 45 m (with an internal
diameter of 3 to 5 mm).
– Use the dust and water separators when taking
measurements with the pump.
– The nominal flow rate is 0.35 L/min.
– The flow alarm is triggered if the flow rate is
<0.3 L/min.
– Following a bump test with aggressive gases (such
as biogas or chlorine), flush the pump with clean air
for several minutes to extend the service life of the
pump.
– A test of the response time with target gas is
recommended.
Flush the Dräger sampling hose or Dräger probes prior
to each measurement with the gas to be measured.
The flushing phase is necessary to reduce negative
effects associated with the use of a sampling hose or a
probe, e.g. gas transport time, memory effects, dead
volume. The duration of the flushing phase depends on
factors such as type and concentration of the gas or
vapour to be measured as well as material, length,
diameter and age of the sampling hose or probe. In
addition to the flushing time, the sensor response time
must be observed (refer to the instructions for use for
the DrägerSensors used).
Generally, when using a sampling hose (3 mm internal
diameter, new, dry, clean) with standard gasses, a
typical flushing time of approx. 3 s/m can be assumed.
Example:
The flushing time for oxygen with a 10 m hose is
approx. 30 seconds. The assumed sensor response
time is approx. 10 seconds in addition. Thus, the overall
time before reading the gas detector is approx.
40 seconds.
A flow-rate alarm is delayed by 10 to 30 seconds
depending on the length of the hose.
4.10.2 Carrying out monitoring with the
pump
Requirements:
– The gas detector is equipped with a pump and is
switched on.
– All installed sensors are warmed up.
– The gas detector is ready to take measurements.
– The thread port for the pump adapter and calibration
adapter must be clean.
Operation en