F-940 Instruction Manual rev. 11/26/2019
1554 NE 3
rd
Ave, Camas, WA 98607, USA
18
Phone: (360) 833-8835
www.felixinstruments.com
Measure
From the main menu, press the right arrow
when the word
‘Measure’ is highlighted to enter
the measurement display screen. All
measurement parameters are saved to the SD
card every one second in continuous mode.
When the SD card is not present, the data will
not be saved. The unit also comes equipped
with Bluetooth technology, designed for
wireless transfer of data (see Transferring
Files, on page 38).
If sampling very high concentrations followed
by very low concentrations, allow the
instrument to
purge
internal gas for the most
accurate measurements.
Continuous Mode
When in continuous mode, a graph of the
concentration of each gas can be viewed over
time. The default graph shown is the C
2
H
4
concentration in ppm. To view the O
2
or CO
2
graph, simply use the up and down arrows to
scroll through the graphs. The current gas
being graphed is shown on the top of the
screen with the concentration in large font as
shown below.
Summary of Contents for F-940
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