www.miinet.comMoore Industries-International, Inc.
- 29 -
User’s Manual
225-748-00P
August 2024
Programmable RTD, T/C, Ohms, mV and Potentiometer Safety Trip Alarm
STA
TPRG
SECTION 4
Scaling the Input
Figure 4.4 gives an overview of the Input Scaling menu.
Scaling allows you to take your PV (Process Variable) reading and transform it to a custom
engineering units range. PV is the unit read after selecting your input type. For example,
choosing a Resistance input would then produce a PV displayed in ohms.
Also known as “Smart Ranging”, scaling of the STA
(TPRG) allows you to set the Zero and Full
scale values of the input from the intended application, without having to connect the unit to any
calibration equipment.
1. At the “SCALE INPUT” display, press SELECT.
2. “SCALE MODE” appears; press SELECT. Choose whether or not to enable scaling. This
will be configured in the next menu. Select “SCALE OFF” or “SCALE ON” and press
SELECT.
Note: If you selected “SCALE OFF” in the “SCALE MODE” menu, the menu skips to Step 6. If
you selected “SCALE ON”, proceed to Step 4.
Scale Mode– This allows you to customize your display for your application. For example,
if your process is sending a 32°-212° reading to the STA and you wish to view the input as
0-100% then this can be accomplished with the Scale Mode feature.
3. The “SCALE EGU” prompt is brought up. Press SELECT and choose the desired five
character string to be displayed. While editing the string, the current position being edited
will be alternated with a “^” character. Use the UP and DOWN button to select the correct
character. Pressing SELECT will move to the next position.
4. Next, “SCALE ZERO” is displayed. Press SELECT, and use the UP and DOWN buttons
to adjust your scaled zero value. This is the value that will be displayed when you are at
the zero end of the input range. Press SELECT.
5. “SCALE FULL” appears. Press SELECT to enter the menu. Enter the value you wish as
your full scaled range. This value will appear when you are at the full end of your range.
Press SELECT.
6. “EXIT SCALE” appears. If all scaling parameters have been set, press SELECT. The
next menu selection to appear is “TRIM INPUT”.
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