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4
USING FOX UNIT
4.1 Setting SuperHeating
By means of the
key, it is possible to display alternately the value of the temperature
measured by T1 probe or the value of SuperHeating calculation.
4.2 Setting Subcooling
By means of the
key, it is possible to display alternately the value of the temperature
measured by T2 probe or the value of SubCooling calculation.
4.3 Setting T2-T1
By means of the
key, it is possible to display alternately the value of the temperature
measured by Tamb probe or the value of T2-T1 calculation.
4.4 Display back-lighting
By means of the
key, you can activate the display back-lighting. The device turns off
automatically after 16 seconds (this parameter may be set by the user, see chapter 5 for
more information), or by pressing the
4.5 "zero Plus" Function - Atmospheric Pressure calibration
FOX manifold has a special function called "Zero Plus" - Atmospheric Pressure Calibration.
This function must be used when one wants to know with the utmost accuracy the reading
values of pressure near zero.
To perform this operation, it is necessary to bring the inner pressure of FOX to the atmos-
pheric value and press the
display means that the operation has been successful.
If the above function is performed with a different instrument inner pressure than the atmo-
spheric one, this could cause an incorrect calibration of the instrument.
Therefore, perform this function with open knobs, in connection with the atmosphere.
key a second time.
key for more than 4 seconds; the message "done" on the
WARNING
9
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