F-940 Instruction Manual rev. 3-8-2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA
13
Phone: (360) 833-8835
[email protected]
www.felixinstruments.com
To change, use the Up/Down arrows to cycle through the mode
options. Press the Left arrow to exit to the main menu.
Setup > Set Zero
The set zero process sets a new baseline, or zero, for the
sensors:
C2H4
CO2
O2
Set zero should take place weekly for all sensors. To set zero,
first press the right arrow to select the sensor. Wait for a beep
to verify the set zero process was completed. The set zero
process requires the use of 100% nitrogen gas to set zero for
O2, an internal Potassium Permanganate jar to set zero for
C2H4, and an external conditioning chamber full of Soda Lime to
set zero for CO2. Setting zero is important in establishing a zero
baseline for the sensors.
For the O2 sensor, an alternative calibration, O2 calibration in
air, can be used instead of setting zero with 100% N2 gas. Please
see the ‘O2 Calibration in Air’ section for more details on this
process.
Mode
Measure
Trigger
Connection
USB Storage
