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Components and Commands continue
11) DISPLAY. The display below is represented with all its segments and indications
a) The number on the display indicates the concentration of gas detected.
b) The number drawn on the display indicates which probe is monitored
The exchange of data of every connected probe is every about 4 seconds.
c) The letters ppm means when the connected probe detects toxic gas.
The letters LEL means when the connected probe detects explosive gas.
d) The timing symbol lights when the control unit is in warm up phase, the same time its begins the count
down.
c
000
a
d
LEL
ppm
1 2 3
b
IMPORTANT NOTE
The installation of the detector is not exempt from ...… The compliance with all regulations concerning the characteristics,
installation and use of gas appliances. The ventilation of the spaces and the elimination of combustion products are described
in the UNI norms according to ART. 3 LAW 1083 / 71 and relevant legal provisions.
Description of Display
The BX444Mc is equipped with a display backlight color to facilitate the recognition of the state of the probe
monitored.
The data exchange for each probe connected happens every 4 seconds.
00
LEL
300
ppm
The blu display shows
th e
p e rce nta g e
of
ox y g e n.
n orm al
condition
20.6
%
20
LEL
FAU
Th e g re e n d i sp l ay
shows an absence of
leakage of gas, normal
conditione
The display shows with
red color a concentration
of explosive gases in
% LEL greater than a
threshold alarm.
The display shows with
red color a concentration
of toxic gases ppm
greater than a threshold
alarm.
The yellow display shows
a fault of one or more
prob es.
<
19.9 %
>
21.9 %
<
19.5 %
>
22.5 %
<
18.5 %
>
23.5 %
1st Pre-Alarm
2nd Pre-Alarm
Main alarm
< Oxygen deficienty
> Excess Oxygen
The BX444-Mc presents three
levels of danger which are:
