Front Panel Layout - PRESTON PRESSURE PS-500 User And Maintenance Manual

FRONT PANEL LAYOUT

Front Panel Description
 The front panel's Altimeter buttons function as follows:
The UNITS button is used to toggle between the various units of measurement available
from the vacuum/altimeter section. (Altitude – feet, Altitude – meters, mBar, mmHg,
inHg, PSIA)
The EXIT button is used to exit out of the leak check mode.
The LEAK CHECK button is functional only when in the Altimeter mode. Pressing this
button will begin a 120 second timer, and the display will also show the gain or loss of
altitude experienced during the displayed time period. If the operator wishes to select a
different length of time, the Leak Check button may be pressed repeatedly, which will
cause a reduction in the timer counter in 30-second increments. The timer will not toggle
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