GMI Shipsurveyor - Operating Modes; Confined Space Monitor (CSM) Operation; Combustible Gas Indicator (CGI) Operation

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USER HANDBOOK
2.3 Operating Modes
Conned Space Monitor (CSM) Operation
In this mode the instrument operates as a safety monitor
for use when entering confined spaces which may
contain hazardous gas mixtures (ammable, toxic and/or
asphyxiant). The instrument continually samples the ambient
atmosphere to which the operator is exposed and generates
alarms for low oxygen, high oxygen, high ammable gas,
high toxic gas, Short Term TWA (STEL) and Long Term
TWA (LTEL).
During normal operation in CSM mode, the instrument
emits a condence beep and illuminates a pair of red LED’s
briey every 8 seconds. This function is programmable in
the instrument setup software.
The condence signal function makes the user aware that
the instrument is sensing for gas without the need for the
operator to constantly view the display:
The condence beep and / or LED indication can be disabled.
Combustible Gas Indicator (CGI) Operation
In this mode the instrument operates as a gas indicator
drawing a sample via a probe from points where gas is
suspected to be present. Alarms are disabled in CGI mode
as the instrument is generally used for measuring gas levels
rather than monitoring for the presence of gas.