Omega CN8EPt User Manual page 31

TM
PLATINUM Series Controllers User's Guide
Ratiometric inputs allow applying an external reference voltage (Vref) used by the Analog / Digital
converter and the measured signal level directly proportional to the reference voltage. The external
reference voltage must be in the range of 1.5 – 2.5 Vdc and applied between APWR and ARTN. An
internal 2.0 k ohm resistor is applied between the APWR and ARTN terminals.
AIN +
V
AIN -
Common
Mode
Voltage
ARTN
M5451
6.1.4.1 Ratiometric Inputs
Reference Section: Initialization Mode (INIt)
Measured Signal as %
of Reference Voltage
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31
Reference
Voltage