EsiWelma Sensigas EW40, Installation And Operating Manual

Page: 58 / 96

Type / N.
Rev. Data Page Total pages
EW095.605 5 November 2010
58 96
EsiWelma
s.r.l.
The screen above indicates that the following are installed in the system:
•
one carbon monoxide detector
•
one relay module
•
one display module (visible by pressing beginning from the window in Fig. 8.4)
•
one alarm module (visible by pressing twice from the window in Fig. 8.4)
The presence of these symbols (--) indicates that no alarm threshold has been exceeded
and that there is no fail device.
On the other hand, the example below shows how the display screen would have been in
the event of a methane detector in pre-alarm condition, another in threshold two alarm
condition and the relay module in fail condition.
To access the information below proceed as follows:
twice
If you want to view the characteristics of any given field device, use the “up” and “down”
keys to line it up with the pointer, then continue as follows.
Fig. 8.9 shows the list of all the field devices in order of seriousness of the alarm.
current measurement
of the concentration
of gas
Q T P R 1 t 2 t F A
C H 4 3 2 - - 1 - -
C O 1 - - - - - - - -
R M 1 1
Q T P R 1 t 2 t F A
D M 1 - -
A M 1 2 1 1 - -
Fig. 8.7
C H 4 s S E T V A L
S 0 1 2 t 4 0 4 2 % L E L
S 0 2 1 t 2 0 2 5 % L E L
S 0 3 P r 1 0 1 2 % L E L
Fig. 8.9
Fig. 8.5
alarms fault
Q T P R 1 t 2 t F A
C H 4 3 - - - - - - - -
C O 1 - - - - - - - -
R M 1 - -
Fig. 8.6
Q T P R 1 t 2 t F A
C H 4 3 - - - - - - - -
C O 1 - - - - - - - -
R M 1 - -
Fig. 8.8
C H 4 s S E T V A L
S 0 1 2 t 4 0 4 2 % L E L
S 0 2 1 t 2 0 2 5 % L E L
S 0 3 P r 1 0 1 2 % L E L
Fig. 8.10
S 0 1 P r 1 T 2 T
S E T 1 0 2 0 4 0 L E L
G A S : C H 4 S T A T E : A C T I V
V A L : 4 2 T I M E : 2 5 5
Fig. 8.11