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Watlow CAS User Manual

Page 63

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Setup

CAS User’s Guide 53

The PV (Process Variable) range for the scaled input is between the PV
values that correspond to the 0% and 100% input readings. For the pulse
input, it is between the 0 Hz and 2000 Hz readings. This PV range
defines the limits for the setpoint and alarms, as shown here.

NOTE

For example linear scaling calculations, see Appendix: Linear
Scaling.

Process
Variable

InputR eading

0 PSI

0%
0 m V
0 H z

100%
60 m V
2000 H z

H iPV

}

Linearinputtype

}Pulse inputtype

Lo
R dg

Lo PV

R ange