Martel Electronics 320 - Manual (Page 20)

Next to each menu in Setup is a number. Pressing that
number on the keypad allows the operator to configure
that specific item.
1 = UsrEng (User Defined Engineering Unit)
This allows the user to enter a custom engineering uit
coversion. The conversion factor to be entered is the
conversion from 1 PSI. Up to 6 significant digits can
be entered, however, the Model 320 calibrator will
display a maximum of 50,000 counts.
The Model 320 will display the user defined
engineering units with the same number of decimal
places that were entered as the conversion factor.
Enter the desired conversion and press Enter. If you
make a mistake while entering the value, press the Clr
key to allow the value to be re-entered. If the Clr key
is pressed while the ????? prompt is displayed, the
user defined engineering units are made invalid, and
will not be displayed when the Eng Unit key is
pressed.
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