Control gas must be supplied through a 1/4 in. ID tube to the back panel of the Proox
360. The pressure must be regulated to 0-40 PSIG. PSIG stands for Pounds per Square
Inch Gauge as opposed to PSIA which stands for Pounds per Square Inch Absolute. For
best results use approximately 15-20 PSIG for control (refer to the “
Tuning” section under
the “Power” heading for further information). Do not connect any tubing yet, wait until told
to do so in the “Calibration” section and “Single Setpoint Control” section.
The amount of gas used is determined by how the chamber is used, not the Proox
360. The Proox 360 uses the least amount of gas possible, which is only what the cham-
ber needs. The amount of gas used is dependent on: (1) The size and leakiness of the
chamber, (2) The amount of times and how long the chamber door(s) are opened, (3) The
oxygen level being controlled.
Use a one or a two stage, 2500 PSIG input, 0-60 PSIG output regulator at the source
of the compressed gas. It is best to have two gauges so that you can monitor the amount
of gas in the compressed source and also monitor the amount passing through the output.
Never allow the pressure coming out of the compressed source to exceed 40 PSIG or
damage will occur to the Proox 360. If the regulator is not near the Proox 360 then
there should be a shutoff valve upstream of the Proox 360 so as to have the ability to
control the gas flow. When taking off gas supply tube always make sure to shut off com-
pressed gas at the source first, then bleed the pressure out of the line and then take off the
tube from back of Proox 360.
Step-by-Step Procedure for Connecting Gas to Machine
1. Before connecting the regulator to the tank, close the regulator and make sure the tank
is also closed off.
2. Connect the regulator to the compressed gas source.
3. Connect the tubing from each compressed gas source to the Proox 360 when told to do
so in the “Calibration” procedures and the “Single Setpoint Control” procedures.
4. At this point you don’t have to open the regulator or turn on the gas. You will be turning
the gas on at the beginning of the “Calibration”/“Single Setpoint Control” sections, for now
just connect the regulator.
Setup of Gas Supply
This section will describe how to setup the gas supply, for information
on how to connect the gas supply to the machine, see the “
Calibra-
tion” sections and the “Single Setpoint Control” section.
6
Proox model 360
version 1.0
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