F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
45
www.felixinstruments.com
range. As the water becomes polluted with alcohols, it will not filter as effectively. This results in
an increase in signal from interfering gasses escaping the filter. A small measurement to
cleaning time ratio is suggested because the longer the measure time with the filter, the longer it
will take to clean. A recommendation of
6 minutes of measure and 12 minutes of cleaning
is
better than 20 minutes of measure and 60 minutes of cleaning. For long-term monitoring,
cleaning time may need to be extended upwards of 50-60 minutes. At the end of the cleaning
time, the C
2
H
4
reading should be low (less than 0.5 ppm). If not, lengthen the cleaning time and
repeat the test. During the cleaning period Chamber Out filled with KMnO
4
is utilized to clean
the DI water of the interfering gases. Therefore, Chamber Out must be filled with KMnO4 when
Chamber In is set to special mode.
When the F-900 has PolarCept turned on, the Monitor Mode display top line will indicate
B_SPEC, meaning that Chamber In is enabled in Special mode. Next, the current state
(measure or cleaning) will be shown. If the F-900 is in a state of Measure, the data will reflect
the current measurement. If the F-900 is in a state of Cleaning,
“Clean” is shown in the upper
right corner of the display.
The F-900 has two hydrophobic filters in-line with the internal tubing. This is to protect the F-900
in case any water is sucked into the instrument when using PolarCept.
To avoid drawing water
into the internal tubing of the F-900 when using PolarCept:
1. Fill conditioning Chamber In only to the fill line and
never completely fill
the
conditioning chamber with water.
2. Always keep the top panel of the F-900 facing up and
do not tilt the instrument
when
there is water in the conditioning chamber. When water in Chamber In, do not operate
the instrument with the display panel facing upwards.
3.
Do not transport or tip the F-900 if water or moisture is in Chamber In
. Before
transport or moving the F-900, Chamber In should be completely dry to prevent even
small drops of liquid from entering the unit.
4. If the Relative Humidity sensor reads high
or a “flow blocked” error appears on the
display, open the top panel of the unit and inspect hoses for liquid. If liquid has
accumulated at the hydrophobic (blue) filter, it should be disconnected and drained. If
liquid has penetrated the hydrophobic filter the unit will need to be serviced to prevent
circuit board failure.
Setup Terminals
The Setup>Terminals Menu is where the F-900 can be setup to have an external fan or gas
control connected to the terminal block. The terminal block is located between the chambers for
consumables on the back panel of the F-900. The F-900 can turn on and off the gas based on
the measured ethylene concentration of the room (or chamber). Other control applications using
B_SPEC MEASURE
0.160 ppm
HUMIDITY 47.0%
TEMPERATURE 28.7C
PRESSURE 100.4KPa
Summary of Contents for F-900
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