F-920 Instruction Manual rev. 5/10/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA
36
Phone: (360) 833-8835
[email protected]
www.felixinstruments.com
Calibration
Full set span calibrations should take place annually for the CO
2
sensor and bi-annually for the O
2
sensor. Always set zero before
setting span. If you have not already done so, download the
GAS ANALYSIS SOFTWARE (G.A.S.).exe package setup software
from
http://www.felixinstruments.com/support/F-920
and
install it on your computer. See “
Gas Analysis Software (G.A.S.)
”
section. For CO
2
Calibration standard gases, we suggest 100%
CO
2
for the set span procedure and a verification gas at a lower
value, like 20%. For O
2
Calibration standard gases, we suggest
50% O
2
for the set span procedure and a verification using
ambient air (20.9% O
2
).
The GAS ANALYSIS SOFTWARE (G.A.S.) Calibration menu enables
a two-point calibration process for the F-920 Check It! Including
Zero Calibration and Span Calibration.
Set zero should take place once weekly for O2 and every 6
months for CO2 to maintain maximum performance. The set
zero process does not require Gas Analysis Software (G.A.S.),
