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
64
a.
Both are portable, but the field kit includes the other components shown on the
website (
http://www.cid-inc.com/CI-900FK.php
), such as the fruit chamber and
wand and hard-sided carrying case. The Field Kit is designed to make
measurement of fruits on a tree (non-destructively) more convenient. A fan is
built into the chamber to mix the air around the fruit.
12.
Is the silica gel in the Chamber B absolutely needed? If not, when should it be used?
a.
Both chambers are optional. The most common use for chamber B is to separate
light hydrocarbons, such as alcohol, from the gas stream which may interfere
with the measurement. The most common use for chamber A is to be filled with
potassium permanganate, so that it cleans all ethylene and other hydrocarbons
from the gas stream, so that any ethylene that is measured must have come from
the fruit in the chamber.
13.
During a monitoring experiment, will the sealed fruit chamber influence the result as
time goes on?
a.
The air should be scrubbed using chamber A filled with potassium
permanganate.
14.
Does the electrochemical sensor need to be filled every 2-3 weeks and does it require
opening the instrument each time?
a.
Water may be added to the electrochemical sensor by putting water in Chamber
B. If water is being used in chamber B for separating out alcohols, then refilling
of the sensor will never be necessary. Similarly, if the sensor is used in a humid
environment, the sensor will not dry out.
15.
Where are temperature and humidity measured?
a.
The temperature and relative humidity sensors are located inside the F-900,
before the electrochemical sensor.
16.
What type of membrane does the electrochemical sensor have?
a.
The electrochemical sensor uses a nafion or nafion-like membrane.
17.
What is the detection rate of the F-900, taking into account the weight of the fruit (or
sample) and the time measured?
a.
For the F-900:
Flow rate: 0.2L/min = 15.0L/hr
