MGS-250 Manual
44 6490-9000
Revision
4
IMPORTANT:
After initial installation, the MGS-250 should
be gas tested to ensure proper operation.
IMPORTANT:
The testing and/or adjustment of the unit must
be carried out by a suitably qualified technician, and must be
done:
x
in accordance with this manual
x
in compliance with locally applicable guidelines and
regulations.
Qualified operators of the unit should be aware of the
regulations and standards set down by the industry/country
for the testing or calibration of this unit. This manual is only
intended as a guide and, insofar as permitted by law, the
manufacturer accepts no responsibility for the calibration,
testing, or operation of this unit.
The frequency and nature of testing or calibration may be
determined by local regulation or standards.
EN378 and the F-GAS Regulation require an annual check in
accordance with the manufacturer’s recommendation.
6.2. Bump Testing vs. Adjusting Detector Response
There are two concepts that need to be differentiated.
x
bump
test
x
gas detector response adjustment
A
bump test
exposes the gas detector to a gas. The operator then
observes the gas detector’s response to the gas. The objectives are
two-fold:
x
establishes if the gas detector is reacting to the gas
x
determines if all of the detector outputs are working correctly
There are two types of bump test.
x
quantified:
A known concentration of gas is used.
x
non-quantified: A gas of unknown concentration is used.
Adjusting gas detector response
exposes the gas detector to a
calibration gas as well (like a quantified bump test), but additionally sets
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