Omega OMB-DAQ-54 User Manual page 52

Example 2:
A Personal Daq user knows that a linear relationship exists between the voltage output at "Point A" and the
voltage output at "Point B" in a certain electrical device. The linear relationship is constant. The user
wants to monitor the voltage at "Point B," however; it is inconvenient to connect signal lines in that section
of the apparatus.
The user realizes he can take the reading at "Point A" and use the mx + b equation to solve for
"Point B." In this example, B
x is the voltage at "Point A."
After his acquisition was configured, the user performed the following steps to allow
Personal DaqView to calculate and display B
1. Left-clicked/right-clicked on the units cell for PD1_A01, typed in
2. Left-clicked/right-clicked on the Scale cell for PD1_A01, typed
3. Left-clicked/right-clicked on the Offset cell for PD1_A01, typed
4. Used channel PD1_A01 to acquire voltage readings which represented the voltage at
5. Selected the Digital Meters button (14) on the Main Control Window's toolbar and
6. Clicked the Update All Indicators button (10) on the Main Control Window's toolbar and
PD1_A01 B:Volts Readings resulting from use of the Scale/Offset Feature.
In this example B:Volts is being displayed on the Analog Input Spreadsheet and in a Digital Meter.
Personal Daq User's Manual
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Volts
keyboard's Enter key.
the keyboard's Enter key.
hit the keyboard's Enter key.
"Point B" (B:Volts).
configured the meter to display readings for PD1_A01 (B:Volts) and PD1_A02.
monitored the readings.
989394
= 1.2x + 0.75 Volts, where B
.
Volts
is the voltage at "Point B" and
volts
, and hit the
B:Volts
for the Scale, and hit
1.2
for the Offset, and
0.75
Personal DaqView 4-9