Gas Data GFM400 Series User Manual

G F M 4 0 0 S E R I E S U S E R M A N U A L
Front panel controls
1. Light. This key switches the screen
backlighting on and off.
2. Auto Zero. This key is used to zero the gas
channel calibrations and perform autozero
on gas channels.
3. Calibrate, Start Pump or Start Sample.
This key changes its function according to
which screen is displayed. It either
switches the instrument to Calibrate mode,
turns on the sample pump in the gas
measurement mode or takes a sample in
other modes.
5.
4. Up. This key scrolls up the gas channel
and summary screens.
5. Previous. This key moves the instrument
to the previous channel group.
6. Next. This key cycles the instrument
through to the next channel group.
7. Down. This key scrolls down the gas channel and summary screens.
8. Power ON/OFF. This key simply toggles the instrument on or off. Under
battery power, the instrument will automatically turn itself off if no key is
pressed for 10 minutes .
NOTE: Keys 1, 2 and 3 are ‘soft’ keys and can have different functions as
indicated on the LCD screen above them.
GFM400 Series 5 GFM400 Series User Manual
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Gas Data GFM400 Series Specifications

General

Brand	Gas Data
Model	GFM400 Series
Category	Measuring Instruments
Language	English