Setra System Model 370 - Manual (Page 21)

Section Four
ADVANCED PRESSURE GAUGE FUNCTIONS
4.1 USER DEFINED ENGINEERING UNITS
The Setra Digital Pressure Gauge has several built-in engineering units
conversions which are accessed simply by pressing CONV. If you want to
display pressure in units other than those provided, use the following
procedure.
Units can be directly changed by entering a factor (number to multiply by)
or a divisor (number to divide by) and will be indicated in the display by "units".
1. Calculate the ratio you wish to enter. If your ratio is in the form of PSI
per "UNITS", inHg per "UNITS", mbar per "UNITS", etc., you will enter a
divisor. Proceed with steps 2 through 5.
2. Press CONV until the display reads in the known units from which you wish
to convert.
3. If you are entering a divisor, press "-". If you are entering a factor, proceed
to step 4.
4. Enter the conversion ratio.
5. Press CONV. The gauge is now displaying pressure in the unit specified
by the conversion ratio, and the "units" symbol.
The conversion ratio will be saved and used for the user-definable
engineering units until you enter a new ratio, even if the power is shut off
and turned back on.
To convert back to the built-in engineering units, press "-", then CONV.
When you execute this function through the RS-232 port instead of the
keyboard, you can specify the symbol for the engineering units which will be
reported through the port in response to the PRINT command.
1. If the ratio is a divisor, transmit the minus symbol, "-". If you are entering a
factor, proceed to step 2.
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