F-940 Instruction Manual rev. 3-8-2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA
9
Phone: (360) 833-8835
[email protected]
www.felixinstruments.com
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 O
2
concentration in ppm. To view the C2H4 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.
The x-axis of the graph represents time elapsed. The y-axis of
the graph displays the range of the concentration in % for CO
2
and O
2
, and the dynamic range is labeled at the top. The y-axis
scale is set by the highest value shown in the active display.
The graph begins on the Left side and moves toward the right as
more data accumulates. The total measurement time is
displayed below the graph. The flowrate (mL/m) is displayed at
the bottom.
Trigger Mode
A measurement in trigger mode will initiate a small volume
sample taken over several seconds until the reading is stable. To
begin, press the square start button as prompted to measure.
This will turn on the pump before drawing in sample gas. Trigger
