Dwyer MPCJR - Manual (Page 13)

OPERATION RV, RC ISOLATED ANALOG RETRANSMISSION
The analog retransmission option allows the Process Variable or the Set Variable
to be sent as an analog signal to an external device. The signal may be either 0 to
10 VDC (Option RV) or 0 (or 4) to 20 mA DC (Option RC). The output may be
changed in the field from one to the other by the toggle switch located on the top
printed circuit board.
Wire the output as shown on page 5.
To set up the analog retransmission, first determine the scale range that the analog
signal will represent. The maximum scale is 9999 counts. In the Secondary Menu
set POL for the the scale value that will be represented by the low end of the analog
signal (0 Volts or 0 mA). Set POH for the scale value that will be represented by the
high end of the analog signal (10 Volts or 20 mA).
If you require a suppressed scale or output, you may use the following equations
to determine the proper settings for POL and POH.
K= (Highest desired scale reading - Lowest desired scale reading)/(Maximum
desired analog signal - Minimum desired analog signal).
POH= ((Maximum possible analog output - Maximum desired analog signal) *K) +
Highest desired analog reading.
POL = Lowest desired scale reading - ((Minimum desired analog output) *K).
Operation is automatic. There are no further programming steps required.
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