Precision Digital PD941 - Manual (Page 25)

ConsoliDator Multi-Channel Controller Instruction Manual
25
Input Scaling & Math Functions
The ConsoliDator is capable of various functions for scaling the 4-20 mA inputs. Linear
Square Root, Programmable Exponent, and Integration are two-point scaling functions.
Multi-Point is capable of handling up to 32 scaling points and requires that the ConsoliDator
Monitor Software be used to enter these points.
Linear
Linear mode refers to basic 2-point scaling of a 4-20 mA signal in engineering units.
The graph in Figure 17 shows the display response based on example scaling
parameters. For this mode select [Linear] from Function options, then follow Sensor
Input Setup (page 29) to enter your scaling parameters.
Process Scaling Parameters
Input
(mA)
Display
(%)
High Value: 100.00 Low Value: 0.00
4.00 0.00 Sensor: 20.00 Sensor: 4.00
5.00 6.25
Line a r Re sponse
0.00
20.00
40.00
60.00
80.00
100.00
4.00 8.00 12.00 16.00 20.00
Sensor (mA)
Display (%
)
6.00 12.50
7.00 18.75
8.00 25.00
9.00 31.25
10.00 37.50
11.00 43.75
12.00 50.00
13.00 56.25
14.00 62.50
15.00 68.75
16.00 75.00
17.00 81.25
18.00 87.50
19.00 93.75
20.00 100.00
Figure 17. Linear Response Graph