MAMAC Systems PR-282 - Manual (Page 3)

Model PR-282
Technical Information
TI.282-04
DIFFERENTIAL PRESSURE SENSOR
Page 3 of 4
VDC Output
RoHS
The PR-282 pressure transducers with VDC output can be powered with either a 12-40 VDC or 12-35 VAC.
Wiring PR-282 Units with VDC Output
PR-282 Differential Pressure Transducer with VDC Output
TYPICAL APPLICATIONS (wiring diagrams)
Figure 3 and Figure 4 illustrate typical wiring diagrams for the PR-282, 0-5/0-10 VDC Differential Pressure Transducer.
Figure 3 - Wiring for VDC Differential Pressure Transducers when applied with
External AC Supply
+
— O
Z S
O
—
The following describes the proper wiring of these pressure transducers with VDC output:
1. Remove the terminal block by carefully pulling it off the circuit board.
2. Locate the [+], [-] and [O] terminal markings on the board.
3. Attach the power wires to the [+] and [-] terminals. The [-] terminal is also the negative terminal.
4. Connect the [O] terminal, which is the positive VDC output terminal, to the controller’s input terminal.
5. Re-insert the terminal block to the circuit board and apply power to the unit.
6. Check the appropriate VDC output using a voltmeter set on DC volts connected to the [O] and [-] terminals.
Signal
+
Common
Supply
Neutral
Hot
0
Input Signal +
Common
+
Shield/Ground
Controller / Meter / Recorder
VDC Output Transducer Only 12-35 VAC Transformer
Figure 4 - Wiring for VDC Differential Pressure Transducers when applied with
External DC Supply
Signal
+
Common
Supply
0
Input Signal +
Common
+
Shield/Ground
Controller / Meter / Recorder
VDC Output Transducer Only 12-40 VDC Power Supply
Caution: If you are using grounded AC, the hot wire must be on the [+] terminal. Also, if you are using a controller without built-in isolation, use an isolation transformer to supply the PR-282.
Caution: This product contains a half-wave rectifier power supply and must not be powered off transformers used to power other devices utilizing non-insolated full-wave rectifier power supplies.
Caution: When multiple PR-282 units are powered from the same transformer, damage will result unless all 24G power leads are connected to the same power lead on all devices. It is
mandatory that correct phasing be maintained when powering more than one device from a single transducer.