A.5 Configuring Smart Meter Using Pushbuttons, Continued
Setting Lower and
Upper Display Values
The Table A-6 shows the restrictions on setting the display values for
given engineering units and output conformity selections.
Table A-6 Smart Meter Restrictions for Setting Display Values
Engineering Output Set
Units code Conformity Lower Display Value? Upper Display Value?
EU0 through EUC
(Pressure type units)
Linear No (set automatically) No (set automatically)
EU0, EUD, EUE,and EUF
(%, GPM, GPH, or Custom)
Square root No (fixed at zero) Yes
Use Table A-8
EUF
(Custom)
Linear Yes
Use Table A-7
Yes
Use Table A-8
Setting Lower and
Upper Display Values
To set the lower and upper display limit values for the meter display
perform the procedures in Tables A-7 and A-8. Also note that in each
procedure you must:
• First set the magnitude range for each display value. This enables
the multiplier (K) on the display for indicating larger ranges (greater
than 19999 and shifts the decimal point of the digital display left or
right depending on the precision you want to show for that value).
• Next set the display value. This procedure sets the display limit of
the meter to represent minimum and maximim transmitter output
(0% and 100 % output).
Note: Magnitude range and display values are set for both upper and
lower (if applicable) display limits.
During normal operation, the display range of the meter digital readout
is ±19,990,000 and is automatically ranged to provide the best precision
possible for the digits available up to 1/100th of a unit.
Setting Lower Display
Values
The procedure in Table A-7 outlines the steps for setting the lower
display limit to represent the 0 percent (LRV) output of the transmitter.
ATTENTION
For example purposes, the procedures in Tables A-7 and A-8 assume
that the lower value is to be set at 0 and the upper value is to be set at
19,990,000 for a CUSTOM unit in a transmitter with a LINEAR output,
and the transmitter’s present output is exactly 50 percent.
Continued on next page
2/05 ST 3000 Release 300 Installation Guide
63
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