Gas Data GFM400 Series, Руководство пользователя

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U S E R M A N U A L
indicates that the pump is switched on
and gas is flowing through the
instrument.
Wait for the reading to stabilise, then
press the ‘stop pump’ key to retain the
reading. This will return the highlight
area around the gas figures.
To view additional gas analysis channels, press the ‘Down’ key. Additional channels
will appear line by line if fitted. To go back to previous channels, press the ‘Up’ key.
Gas pressure
measurement
Leave the gas pipe connected
to the gas tap and press the
Next key to switch to
Channel Group 2 - Pressure.
The display screen will
change to show the last
retained gas pressure reading
indicated by the highlight
around the pressure figure.
Now press the ‘start sample’ key. The instrument will now measure the pressure or
vacuum in the site pipework.
When the reading has stabilised, press the ‘stop sample’ key to retain the reading.
This will return the highlight area around the pressure figure. Turn off the gas tap
on the sample point and remove the gas pipe.
AP = atmospheric pressure
SP = static or gauge pressure: +ve = pressure, -ve = vacuum
8 GFM400 Series User Manual
G F M 4 0 0 S E R I E S
Take great care
when dis-
connecting the
pipe from the gas
tap to avoid gas
leakage.
GFM400 Series