![Felix Instruments F-900 Operation Manual Download Page 40](http://html1.mh-extra.com/html/felix-instruments/f-900/f-900_operation-manual_3916052040.webp)
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
36
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 or a fan based
on the measured ethylene concentration of the room (or chamber). In this way, the F-900 could be
used to control a fan set to evacuate a store room if ethylene concentrations increase past a set
point. Other control applications using the terminal block are possible, such as controlling ethylene
scrubbers.
Press the UP/DOWN arrow to switch between parameters.
Press the LEFT arrow to switch to the column containing the values in
ppb
(parts per
billion).
Use the UP/DOWN arrow keys to set the desired level.
Press the LEFT arrow, STOP or SAVE to exit back to the Setup Menu. Any changes made will
automatically be saved.
The F-900 will perform an action at the high and low levels, when set. If the concentration of
ethylene rises above the Gas_Hi, the gas will be shut off. If the ethylene concentration is lower than
the Gas_Lo, the gas will be turned on.
Similarly, the fan control is used to turn on and off a fan based on ethylene concentration. If the
ethylene concentration rises above the Fan_Hi level, the F-900 will turn on the fan in order to
evacuate a room or chamber and reduce the ethylene concentration. The Fan_Lo setting is to turn
off the fan. The Gas and Fan controls can be used together, but be sure that the Fan_Lo setting is
well above the Gas_Hi setting.
Setup Terminals
VALUE PPB
GAS_HI 00000
GAS_LO 00000
FAN_HI 00000
FAN_LO 00000
CONTROL DISABLE