F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
43
www.felixinstruments.com
Alternatively, Chamber Out could be used with soda lime to remove CO
2
from the gas stream.
Similarly, silica gel is used to scrub water from air and create a 0% relative humidity gas. Most
commonly, potassium permanganate is used to for zero calibration of the ethylene sensor.
KMnO
4
beads (not dust) should be sourced locally by the user.
KMnO
4
has an added color indicator that turns from purple to brown when it expires and
needs replacement.
The silica gel from blue to pink when replacement is necessary.
To use Chamber Out to condition the air replenishing the fruit chamber, enable Chamber Out in
the Setup>Chamber menu and fill Chamber Out with the appropriate consumable. Connect the
fruit chamber hoses to both the
IN and OUT ports on the front of
the F-900.
Figure 22: The back of the F-900 with removable and refillable containers for distilled
water and KMnO
4
(left) and a diagram showing the flow path of the gas stream (right).
Chamber In is on the right side of the back panel. This chamber can be enabled in two different
modes. For
PolarCept
, Chamber In should be filled with distilled water to help filter out
interfering gases in the air stream. By passing the gas sample through the water, polar
molecules are trapped or filtered from the airstream. Using Chamber In with distilled water as a
Summary of Contents for F-900
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