F-940 Instruction Manual rev. 11/26/2019
1554 NE 3
rd
Ave, Camas, WA 98607, USA
92
Phone: (360) 833-8835
www.felixinstruments.com
11. Calibrate the O
2
sensor
**Make certain you are in fresh ambient
air**
a. Power on the device
b. Select
Setup
. Press the right
arrow to enter the menu.
c. Use the down arrow to scroll to
Factory Setup. Press the right
arrow to enter the menu.
d. Press the right arrow to enter
the passcode 1111
e. Use the down arrow to scroll to
Sensor Gain Settings. Press the
right arrow to enter the menu.
f. Select
Save & Reset
. Press the
right arrow twice to save the
gain configurations. This will
reset the reminder to replace
sensor in one year
g. Press the left arrow twice, then
scroll to
O2 Calibration in Air
h. Press the right arrow to accept,
then the calibration will begin.
The process takes
approximately 30 seconds to
complete and will say OK. It will
return to the Setup menu when
complete.
12. Cleaning and Set Zero Cycle for C
2
H
4
Sensor (not applicable to F-920)
a. Connect the external
conditioning tube filled with
Summary of Contents for F-940
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