GMI PPM Gasurveyor 500, User Handbook Manual

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PPM GASURVEYOR 500 USER HANDBOOK
20
As the battery power continues to fall, the LCD flashes a
‘BAT FAULT’ message. Subsequently the LCD displays
‘OFF’ and the instrument automatically switches off. The
batteries should be replaced immediately.
‘BAT FAULT’
This indicates that the batteries require replacing.
‘EEE’
‘EEE’ is displayed if the measurement in the Search or
ppm ranges rises above 999 (instrument over range). The
ppm range auto-ranges to LEL/Volume gas and hence does
not show this message.
The message is also displayed if the measurement falls
below -99 (incorrect zero setting) in either Search or ppm
ranges.
‘1’
This message which can also appear after power on,
indicates that a calibration data error has been detected.
The instrument should be returned for servicing.