F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
25
www.felixinstruments.com
F-900 Calibration
The F-900 can be calibrated without any additional software. To access the calibration options,
navigate to Setup > Calibration. The C
2
H
4
ppb and ppm sensor, CO
2
ppm and PCT sensor, and
O
2
sensor are all accessible for on-device set zero and span calibrations. Refer to the
specifications on pages 3-4 for the calibration schedule on each sensor.
Note:
“Set zero” and “offset” are interchangeable terms in the following procedures as well as
“span” and “gain”.
Pre-requisites
The calibration process consists of three basic steps. The first step is obtaining an offset point
(the zero point) and second step is obtaining a span point. Lastly, it is good practice to verify the
calibration using another standard gas. See Table 1 for a summary for the standards
recommended for each gas sensor. The blue columns are your offset points (step 1). The white
columns are you span points (step 2). The green columns are your verification points (step 3).
Note that CO2 ppm sensor has two options for obtaining the offset point.
Table 1: Recommended Standards for Gas Sensors **can use ambient air to verify the O2 sensor
100
ppm
(C
2
H
4
)
gas
75
ppm
(C
2
H
4
)
gas
5
ppm
(C
2
H
4
) ga
s
2
ppm
(C
2
H
4
) ga
s
16%
(CO
2
) gas
5%
(CO
2
) gas
2,000
ppm
(CO
2
)
gas
1,00
0
ppm
(CO
2
)
gas
50
%
(O
2
)
gas
20.9
% (O
2
)
gas
100%
(N
2
)
gas
Potassi
um
Perman
ganate
(
KMnO
4
)
Soda Lime
(NaOH-
KOH…)
C
2
H
4
ppm
senso
r
C
2
H
4
ppb
senso
r
CO
2
PCT
senso
r
CO
2
ppm
senso
r
O
2
senso
r
Summary of Contents for F-900
Page 2: ......
