sewerin EX-TEC Combi, Operating Instructions Manual

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10 Application hints
10 Application hints
10.1 Application hints from report of suitability examination
PFG-No. 41300401P
On the basis of the measurement results and remarks contained
in the test report PFG-No 41300401P, the EX-TEC portable
gas warning device from Hermann Sewerin GmbH is suitable
for measuring carbon monoxide up to 500 ppm CO, hydrogen
sulphide up to 100 ppm H
2
S, oxygen up to 25 % O
2
(with respect
to the use of the device to monitor the ambient air for oxygen deficit
or excess) and carbon dioxide at concentrations up to 5 % CO
2
,
provided that its properties and version correspond to the
documents specified in the test report PFG-No 41300401P, and
that it is operated accordingly and that the following requirements
are fulfilled:
The operating manual submitted and tested by the DMT must
be followed in every respect.
When using the gas warning device it is essential to check
whether the response times are short enough to enable its
warning function to be triggered quickly enough to avoid
potentially hazardous situations. If necessary the alarm threshold
should be set substantially below the safety threshold.
Please keep in mind that if the device is used in a location with
high temperatures and high humidity, the measured value in
the oxygen-mesurement range will be considerably increased.
If necessary, recalibrate the device before use under these
conditions.
The device must be checked regularly, particularly for the
measurement ranges 0 – 100 ppm H
2
S and 0 – 500 ppm CO, to
insure that its display for dummy and test gases is accurate.
The devices are to be provided with a permanent name plate
where the manufacturer, type and serial number and the
following inscription is to be included:
„PFG-No. 41300401“
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