CI-ControlWave EFM Installation & Operation / 2-39
Figure 2-25 - RTD Probe Installation/Removal Diagram
2.3.6 21V Power Supply Option
21V Power Supplies are mainly used in conjunction with Temperature and Pressure
Transmitters which require a higher than +12V but lower than +21.4V (±.8V) input supply
to operate (such as Series 3508 Transmitters).
Figure 2-26 - 21V Power Supply Board
21V Power Supply Boards contain two terminal blocks that accommodate power con-
nections between the ControlWave EFM and remote transmitters. TB1 is a three-position
terminal block that provides input power connection from the Power Distribution Board.
Four-position Terminal Block (TB2) provides +21V power and ground to external devices
such as Series 3508 Transmitters.
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