7 Device inspections
│
39
7.4
Subtests
A device inspection includes all of the following subtests.
●
The following subtests are automatic in sequence:
−
Pump
Test whether the device detects a pump error. To do this, the
gas input is blocked.
−
Zero point
Check whether the zero point is within the permitted toler-
ances. Test gas is fed in for this purpose.
−
Indication accuracy
(for standard device inspection)
Check whether the indication accuracy lies within the per-
missible tolerances. Test gas is fed in for this purpose.
OR
Bump test
(for
ECO
device inspection)
Check whether the display is working and whether alarms
are triggered. Test gas is fed in for this purpose.
●
The following subtest is then carried out:
−
Device condition
Evaluation of the device external condition (visual inspec-
tion). Test whether the signals work.
In contrast to the automatic tests performed, the
Device condi-
tion
subtest requires multiple user interactions with the test set.
Notes:
The device must remain in the test set during the
Device con-
dition
subtest.