sewerin EX-TEC Combi, Руководство по эксплуатации

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5 Testing / maintenance
5 Testing/maintenance
Note:
Gas warning instruments must always be tested by
the user before use or before each shift.
But at a minimum all 4 month. The test must
cover:
the battery charge
the display with environmental gas conditions
and test gases
(Technical bulletin BGI 518)
Note:
DIN EN 50073 and EN 45544-4 provides that porta-
ble gas warning instruments (of which the EX-TEC
Combi is one) must be tested as stipulated in their
operating instructions and immediately before use.
Items that the test is required to cover include the
zero point and display sensitivity with a field calibra-
tion instrument and test gas.
Note:
In case of calibration data to multiple gas types are
stored, tests of display accuracy must be carried out
for all existing calibrations using corresponding test
gases (see section 5.3).
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