GAS Gasmaster, Installation, Operation And Maintenance Manual

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Every Gasmaster system is pre-configured by Gas
Alarm Systems, please refer to the Specification and
Inspection Certificate provided with the product
for configuration details. This section describes the
operation of pre-configured units, and includes
procedures for altering settings.
3.1 Gasmaster Operator Panel
The Operator Panel allows you to communicate
with Gasmaster. Use it to monitor the status of all
attached field devices, determine system settings and
configuration of field devices. Figure 3.1 shows the
Operator Panel and typical display under normal, non-
alarm monitoring conditions.
Gasmaster Display
The User display provides continuous readings for up
to 4 field devices plus a display area for user messages
and channel number summary. Gasmaster 1 provides
display for one field device plus the message area.
Message display area
In normal, non-alarm condition, the message area
displays the channel numbers and detector types, e.g.
CH4 refers to methane detector, see following example.
The # symbol represents the channel number (i.e. #1 is
channel 1).
In the event of an alarm, this message area will display
the channels in alarm and their location. See section 3.8
for more information on alarm conditions.
In the case of a fault (or warning), brief details of
the fault will be displayed. See section 3.9 for more
information on fault conditions. Detailed fault and
warning messages can be found in section 3.10.
Note: User messages longer then sixteen characters are
displayed as scrolling text. If fault and alarm conditions
are present at the same time, alarm messages take
priority.
Channel display area
Gasmaster 4 has a large clear display which shows all
gas levels simultaneously. Gasmaster 1 has a display
for one gas level only, see figure 3.2. The image below
shows details of the channel display area and icons that
are used on Gasmaster.
3. Operation