F-940 Instruction Manual rev. 11/26/2019
1554 NE 3
rd
Ave, Camas, WA 98607, USA
23
Phone: (360) 833-8835
www.felixinstruments.com
6.
Check the box named ‘Show hidden
files, folders, and drives’
7.
Click ‘Yes’
8.
Click ‘Apply’ and then click ‘OK’
9. Open the Config.txt file that should now
appear inside the SD card
10.
Alter the ‘1111’ to four-digit numeric
passcode desired
11. Save the changes
12. Insert SD card back into Gas Analyzer
Flow Blocked
If at any point during measurement the flow
becomes blocked, the user will be warned with
an error message, ‘Flow Blocked’, and the
pump will turn off and the instrument will exit
the user out to the main menu. Flow may
become blocked while using PolarCept, if
water saturates the hydrophobic filter. Flow
may also be blocked by other physical
obstruction in the tubing including debris and
dust. For safety, it is best to operate the
instrument with the hydrophobic filter attached
to the intake if at risk of pulling water or dust
into the intake.
Sensor Out of Range
The sensor range of the F-940 is 0
–10 ppm.
Damage can occur to the sensor if measuring
ethylene concentrations beyond this range. In
order to protect the sensor from damage, the
instrument will display the warning, ‘Sensor
Out of Range’, and the pump will turn off and
the instrument will exit to the main menu.
Summary of Contents for F-940
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