sewerin EX-TEC PM 4 - Testing Indication Accuracy with Test Gas

50
5 Maintenance
The frequency of the test depends on the application. For the
Warning %LEL application, it must be carried out before com-
mencing each work session!
When the function control is complete, it can be stored in the user
menu (see Section 3.2.7).
5.2 Testing indication accuracy with test gas
The frequency of the test depends on the application.
Application When to test Legal basis
Warning %LEL Daily when com-
mencing work
EN 60079-29-
2 / BGI T 023
House Weekly to every six
months
DVGW G 465-4
Enclosed spaces
Measuring VOL%
The indication accuracy must be tested separately for each
calibrated gas type.
All tests must be documented. The documentation must be kept
for at least one year.
Connections and controls on the
tester
(shown here: SPE HG)
A Device connection
B Test gas connection
C Pressure gauge
D Release button
E Connecting hose
A
D
B
C
E