ALTAIR 4X
GB
39
The symbol will be displayed in the Measure mode for 24 hours after a successful
Bump Test.
3.9 Calibration
The device can be calibrated either manually using this procedure or automatically
using the GALAXY GX2 Test Stand.
Calibration must be performed using a flow regulator with a flow rate set to
0.25 litres per minute.
If a battery charging cycle is interrupted before it is completed [4 hours for a fully
discharged battery], allow the device’s internal temperature to stabilise for
30 minutes before performing a Calibration.
(5) Press the ON/OFF button to start the bump test
then open the valve on the regulator. The hour-
glass will flash and the sensors will respond to
the gas.
(6) Close the valve after bump testing.
After the Bump Test completes, the device momen-
tarily displays “BUMP PASS” or “BUMP ERROR” along
with the label of any sensor that failed before return-
ing to Measure mode. If the device fails the
Bump Test, perform a calibration as described in
chapter 3.9.
Under normal circumstances MSA recommends calibration at least
every six months, however, many European countries have their own
guidelines. Please check your national legislation.
FASIT Srl - Via Orsera 13/b - 34145 TRIESTE - ITALY - Tel +39 040 825604 - www.fasit.it
- info@fasit.it
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