The default mode of operation is a rising solid bar current gas reading
display with a peak reading facility, and with a combination of automatic
sequencing between channels and highest reading.
2.2.3 Digital Display
The digital display is a four character, seven segment display which
provides either an indication of the sensor gas reading or a value relating
to a function selected from the Engineering Card.
Dependingonthesensorrangeandthecongurationsetting,thedigital
display shows a gas value to either no decimal place (the default setting)
or to one or two decimal place.
2.2.4 Message Display
The message display consists of a four character, 14 segment display
which provides intelligent reporting of the sensor status or information
on a selected engineering function. Fot control cards tted with the
highintegrityrelayoutputsperformingmaster,zoneorvotedalarms
the alarm state will also be indicated as follows:
BEAM - Beamed Block Alarm
MSTR - Master Alarm
ZONE - Zoned Alarm
VOTE - Voted Alarm
In the case of an update alarm, the cause of the alarm is indicated
as follows:
-FT- - Fault Alarm
-IN- - Inhibit Alarm
-A1- - A1 Alarm
-A2- - A2 Alarm
-A3- - A3 Alarm
-ST- - STEL Alarm
-LT - LTEL Alarm
2.2.5 Icon
The icon provides a simple indication that the display is functioning
and changes when the channel card is selected for operation with the
Engineering Card.
Normal Operation Selected
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