Martel Electronics BetaGauge 3II - Manual (Page 39)

Basic Operations 3-4
BetaPort–P Pressure Module
The BetaPort– P pressure module can display in any of
the following units:
 PSI  InHg  InWC
 mmHg  cmWC  kPa
 bar  mbar  atm
 kpcm  MPa  (User)
Upon initialization, the BetaPort–P pressure module
defaults to PSI pressure units. Use the following
procedure to select other pre-programmed pressure
units:
1. Press CH 1 or CH 2, as appropriate, to select the
BetaPort–P pressure module for modification.
2. Press the function key corresponding to Unit to
view the list of pre-programmed units. The 
menu item allows you to scroll the menu for other
selections.
NOTE: If you select Unit for a channel where the
BetaPort–DC module is installed, the message
Invalid Selection will appear. Press the function
key corresponding to Clear to erase this message
and return to the Setup menu.
3. When the pressure unit you want to use appears,
press the corresponding function key to select the
unit. You can view the current selection in the LCD
display for the appropriate channel.
NOTE: If you select InWC or cmWC, refer to the
section Water Column Measurements on the
following page.