Dräger X-am 2800 Notice D'utilisation page 27

Recommended calibration intervals for DrägerSensors:
®
DrägerSensor
CatEx SR, XXS O , XXS H
2
LC, XXS CO LC, XXS SO
XXS NO
2
CatEx SR, measured gas: H
2)
PID HC neo
Other DrägerSensors
1) The recommended calibration interval can be extended to 12 months
if it is ensured that an advanced bump test (tolerance: max. ±20 %) is
carried out and passed before use in safety-relevant measurements.
The advanced bump test checks the existing sensitivity.
2) If the gas detector is used with the PID HC neo sensor in the X-
zone 5500/5800, a bump test must be carried out after no more than
7 days. This applies in particular if the X-zone 5500/5800 is continu-
ously powered by the Ex power supply. A bump test must always be
carried out when using the gas detector in the X-zone if the location of
the X-zone changes.
3) Alternatively, a calibration interval of 6 months may be implemented.
This requires the use of the X-dock maintenance station to conduct a
reading test of the type 'Extended bump test' every working day with a
tolerance of 10 % based on the target concentration. If the gas detec-
tor fails this test, it must be calibrated.
National regulations may stipulate shorter intervals and
must be applied.
CAUTION
Health hazard
The sensor contains corrosive liquids.
► If leaking, avoid contact with skin and eyes. If contact
occurs, rinse with plenty of water.
For changing, retrofitting or removing a sensor, refer to the
technical manual.
For further information about how to use the Dräger sensor,
click on the following link:
www.draeger.com/sensorhandbook.
5.3 Test gases
Test gas properties (e.g. relative humidity, concentration) can
be found in the relevant sensor data sheet.
The relative humidity of the test gas is not relevant for O
sensors.
Different test gases are used depending on the type of
calibration.
Instructions for use |
X-am
Calibration interval
S
1)
2
Every 6 months
,
2
1)
2
Every 4 months
Depending on the conditions
of use, daily calibration may
be necessary. The interval
may be extended in incre-
ments to up to 30 days
deviations occur during cali-
bration in successive tests.
See the special data sheets
for the respective sensors.
® ®
2800 / X-am 5800
5.4 Performing the bump test
The bump test can be performed as follows:
– Manual bump test
– Bump test with the bump test station
– Bump test with X-dock
The Dräger CC-Vision PC software can be used to
configure whether a quick or advanced bump test should be
performed with the menu or in the bump test station.
Dräger recommends using the extended bump test for cross
calibrations (see the Dräger X-dock instructions for use).
For the CatEx sensor, we recommend methane as the test
3)
if no
gas, including for cross calibration, if methane is expected in
the target application.
X-am 5800: With a manual bump test, consideration must
be given to the influence of the H
An active H added signal will be automatically temporarily
2
deactivated for the duration of a manual calibration, a PC
calibration or an automatic bump test.
The bump test can also be carried out in the password-
protected menu.
Prerequisites
– A bump test can only be carried out if at least one sensor
has been configured for the bump test with the Dräger CC-
Vision PC software (does not apply to bump test with X-
dock).
– The gas detector is switched on and warm-up phase 1 is
complete.
– A suitable test gas cylinder is available, e.g. test gas
cylinder (order number 68 11 130) with the following mixed
gas ratios: 50 ppm CO, 15 ppm H
18 Vol% O
2
request)
WARNING
Health hazard from test gas
Breathing in of test gas can be harmful to health or lead to
death.
► Do not inhale the test gas.
► Observe risks connected with the test gas, hazards notes
and safety advice (see for example safety data sheets,
instructions on the testing media).
Dräger recommends a test gas concentration of <60 %LEL
for CatEx sensors and a measuring range of 0 % to
100 %LEL.
1. Connect the test gas cylinder to the calibration adapter
(order no. 8318752).
2. Insert the switched-on gas detector into the calibration
2
adapter and press it down until it locks into place.
3. Call the bump test via the Quick menu. Failure to do so
means that the bump test is performed without
documentation.
added signal.
2
S, 2.5 Vol% % CH4,
2
(other test gas cylinders can be added on
| en
Maintenance
27