F-920 Instruction Manual rev. 6-6-2016
1554 NE 3
rd
Ave, Camas, WA 98607, USA
29
Phone: (360) 833-8835
[email protected]
www.felixinstruments.com
Oxygen (O
2
) Sensor Verification *After Set Span
Perform this process immediately after calibrating the oxygen
sensor on the F-920
1.
Connect the high resolution flow meter, O
2
verification
gas, and F-920 intake ports together using a T-junction
of tubing. If a sample bag of O
2
is being used, make a
connection from the F-920 intake port to the bag using
the accompanied needle port.
2.
On the F-920 begin measure mode.
3.
Scroll through the graphs on the F-920 (use the up and
down arrow keys) so that it is displaying the O
2
concentration graph.
4.
Set the flowrate on the O
2
2
gas tank so that the flow
meter reads roughly 90 mL/min. If the F-920 gives a
“Flow Blocked” error, then increase the flow on the
meter by 10 mL/min and begin measure mode on the F-
920 again. If the error persists, contact tech support. If a
sample bag is being used, skip this step.
5.
Let the F-920 read the gas for three minutes.
6.
The F-920 should read the same value as the
verification gas within spec. If it does not, repeat the
“Oxygen Sensor Calibration” section above.
