GMI First Responder, User Handbook Manual

Page: 43 / 104

3-13
‘ZERO FAULT’
This indicates that the zero is outwith its calibration limits.
Switch the instrument off and then on again in fresh air. If
the fault does not clear, return the instrument for servicing.
‘BAT’
This indicates that the batteries will soon require
replacement. At this point there will be approximately 1 to
2 hours left in a set of alkaline batteries, although this
figure will vary depending on battery manufacturer,
temperature conditions, usage etc. With rechargeable
batteries the ‘BAT’ flag indicates approximately 30 minutes
operation left.
‘BAT FAULT’
This indicates that the batteries should be replaced
immediately.
As the battery power continues to fall, the pump switches
off and the LCD flashes a ‘BAT FAULT’ message.
Subsequently the LCD displays ‘OFF’ and the instrument
switches off after approximately 5 minutes. The batteries
should be replaced immediately.
‘STORE’
This flag is displayed when the instrument is in auto
datalogging mode. During manual datalogging, if not already
on, the flag will be displayed for approximately one second.
‘EEEE’
‘EEEE’ is displayed if the measurement in the EXT range
rises above 9999 (instrument over range) or PPM
flammable range measurement rises above 999.
OPERATION