Watlow Anafaze PPC-2000, User Manual

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Chapter 3: Operating with AnaWin 3 PPC-2000 User’s Guide
98 Watlow Anafaze Doc.# 30002-00 Rev 2.3
Setting up User Selectable Linear Inputs
The Input Type and linear scaling fields ( Input Signal Lo, Input
Signal Hi, PV Lo and PV Hi ) appear on the Inputs spreadsheet.
Linear input types are used with sensors whose signals are
straight line (linear) functions of the quantity being measured.
For example, a sensor that supplies a voltage signal
proportional to the pressure it detects would use one of the
linear input types and the signal would be converted to a
process variable using the scaling values set on the
Inputs
spreadsheet. To define the conversion function, the user
specifies two points on the line. See
Figure 3.3 .
Figure 3.3 Linear Input Example
PV Lo
PV Hi
Input Signal Lo
Sensor Input
Input Signal Hi 10V
Process
Variable
20 PSI
0 PSI
0 V