F-900 Instruction Manual rev. 1/16/2014
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone (360) 833-8835 Fax (360) 833-1914
[email protected] http://www.felixinstruments.com
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Setup Chamber
To access the Setup Chamber feature of the F-900, press the RIGHT arrow key when Chamber is
highlighted on the Setup Menu. Here, the user can turn on or off the in-line conditioning columns
on the back of the instrument. These removable plastic containers are used to hold the
consumables soda lime, silica gel, potassium permanganate and distilled water. The purpose of the
inbound chamber, Chamber_In (B) is to either condition the air before it reaches the sensor or
provide a “special mode” where distilled water is used to filter out alcohols before the
electrochemical sensor. The purpose of the outbound chamber, Chamber_Out (A) is to condition
the air going back into the fruit chamber or room and occurs after the sensor. Place the empty
chambers back on the instrument before taking measurements. If Chamber_In or Chamber_Out are
selected when the unit enters Closed Loop Cleaning then they will be included in the cleaning loop
(v006 Hardware). In units with v005 hardware, only the inbound chamber, Chamber_In, is included
in a closed loop.
Figure 12: The back of the F-900 with removable and
refillable containers for consumables (left) and a diagram showing the flow path of the gas stream
(right).
Chamber Out (A) is on the left of the back panel. If the Outlet gas stream is connected to the field kit
chamber or to the inlet of the unit, it can be used to condition the incoming gas after it leaves the
sensor.
