F-920 Instruction Manual rev. 6-6-2016
1554 NE 3
rd
Ave, Camas, WA 98607, USA
7
Phone: (360) 833-8835
[email protected]
www.felixinstruments.com
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 O
2
concentration in ppm. To view the 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 is time. 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 buffer.
The graph begins on the Left side and moves towards the right
as more data points are added. 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
