Installation - Johnson Controls - DP140 - Differential Pressure Transducer - DP140 Series Differential Pressure Transducer

About this task

Wiring is through a 1/2 in. threaded conduit opening. Both current and voltage output units are reverse wiring protected.

Note: Figure 1 shows the voltage output and Figure 2 shows the current output, both for electrical code 1.

Important: For voltage outputs, do not connect +Excitation to +Out/Sig as this results in unrecoverable damage to the board.

To install the DP140 transducer, complete the following steps:

To access the terminal strip, pull the latch away from the base to disengage the cover.
Swing open the cover to access the terminal block.
Identify wire terminals on the circuit board and the diagram on the inside cover.

For voltage output, connect the wires as shown in Figure 1.

Figure 1. Voltage output

Callout	Description
A	Readout or Data Access Server (DAS)
B	DP140 Transducer
C	Power supply
EXC	Connect to positive terminal of DC or AC power supply
COM	Connect as the reference for power supply and output signal
OUT	Connect to positive terminal of control or pressure monitor

Close the cover.

Figure 2. Current output