F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
82
www.felixinstruments.com
APPENDIX IV: F-900 Controller Software for Calibration
The F-900 Controller software is designed to make calibration quick and easy, with many
automated features. (Requires latest version of Java). A major advantage of using the F-900
Controller software to calibrate the sensors is that all calibration parameters are updated and
saved in the F-900, including calibrated RH, calibrated T, and internal gain. Additionally,
compensation for temperature and relative humidity are automatically applied, based on the
internal sensors of the F-900. The F-900 Controller software is primarily used for the
C2H4 PPB
sensor span calibration
, which is recommended
weekly
.
Other sensors on the F-900 can be calibrated using the F-900 Controller software. The
calibration of the RH sensor requires an external relatively humidity sensor.
Each sensor must
have the zero calibration set before carrying out the span calibration.
This can be carried
out with KMnO4 and the “set zeros” calibration for ethylene, or for “set zero” of CO2 and O2
sensors by using N
2
gas and the F-900 Controller software (step #1 in the F-900 Controller
software “Calibration” tab).
The CO2 PCT is calibrated at 3 known points and 0 ppm to provide the greatest accuracy for
the 0-20% range. When recalibrating the CO2 PCT sensor, choose the expected or desired
range and calibrate with the recommended concentration. If using the 0-100% CO
2
range,
values above 20% are extrapolated
and not measured due to the limitation of the sensor
range. Verify with CO
2
gas within expected range. The following table indicates what
concentration of calibration gas is used at Felix Instruments for each sensor. Please refer to
calibration prerequisites on pg. 25.
Ethylene Sensor Span Calibration
Refer to the Specification on page Specifications3 for the calibration schedule as well as Table
1 on page 25.
Before performing a span calibration:
1. First perform a zero calibration
2. The F-900 driver must be downloaded and installed using the
F-900 Package Setup
v1.X.exe
found on the webpage (
http://felixinstruments.com/support/f-900-support/software
), as
well as detailed instructions. The F-900 Package Setup includes the F-900 Controller software
necessary for the calibration.
Set C
2
H
4
PPB Span
1. Connect the F-900 to the PC using the USB cable. Power on the F-900 and open the F-
900 Controller software (Latest version of Java required. Check
a. If the F-900 display becomes frozen consistently when connecting to the PC, it is
possible the SD card is corrupted. To repair, insert the SD card in the computer.
If the PC reports disk error, choose "scan and fix". If not right click on the SD
card drive > Properties > Tools > Scan. Press and hold the power button for 10
seconds to force a shut-off if the F-900 freezes.
Summary of Contents for F-900
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