Instruction 0019-9322
MGC 100/200
Figure 1. Components of the MGC 100/200
A - Gas inlet
fi
tting
B - Gas outlet
fi
tting (MGC 200 only)
C - LCD Display
D - IrDA link
E - Pump ON light / Alarm indicator
F - Press once to switch instrument
ON; press once to start and stop
pump; hold 3 seconds to switch
instrument OFF ( )
G - Battery charging socket
H -
MGC 100/200
: Press once to
store ‘snapshot’ of gas reading
MGC 200
: Press and hold to start
and stop data-logging
(f
1
)
I - Press once for battery level; hold
to start calibration
(f
2
)
J -
MGC 100
: Button is enabled only
during a span calibration
MGC 200
: Press once to toggle
between CO
2
and CO displays;
hold for peak gas reading
(f
3
)
MGC
2
3
A
J
I
H
D
E
F
G
B
C
2.0 OPERATION
2.1 Important
Note
Always ensure that the instrument’s gas outlet (Figure 1, Item B) is un-
obstructed and open to the atmosphere.
2.2 Switching the Instrument ON/OFF
Switch ON the instrument by momentarily pressing the button (Fig-
ure 1, Item F). Switch the instrument OFF by pressing the button for
at least 3 seconds, or until the display goes blank. When
fi
rst switched
ON, there is a warm-up period of approximately 5 minutes for the MGC
100 and a 1 minute warm-up period for the MGC 200 before gas readings
are displayed. Note that normal fresh-air background readings of CO
2
is
approximately 340 ppm.
3
