Atest Gaz Sigma Control L, User Manual

Page: 13 / 52

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Figure 7: Opera!on principle for visual indicator output with sustained
The opera on principle for an acous c indicator output is presented in Figure 8. The output is ac vated
when alarm threshold exceeding is detected at any detector. This output has to be temporarily disabled
when alarm is on, by pressing the push bu+on (see also sec on 5.5). The output status can be observed
via the user’s interface (see sec on 5.5). For output specifica ons – see sec on 10.
p. 13|37
User's Manual: POD-026-ENG R11
on
SO output
Gas concentra on
Time
Warning -
output disable
Warning disappears -
despite this the
output is s ll enabled
Operator presses the
on – output
disables
The output cannot be turned
off – warning 1 is ac ve (the
on does not
respond)
Warning 1 threshold
Figure 8: Valve control and the opera!on principle for an acous!c indicator output
on
SA Output
Gas concentra on
ALARM
Time
t
DEZ
ALARM - output
enable
ALARM disappears -
output disabled
Operator presses the
on – output
disables despite ac ve
warning
The me to disable
passes. Input enabled
again
Parameter,
deac va on me
Valve opera on