MAMAC Systems PR-243 - Manual (Page 2)

Model PR-243
Technical Information
TI.243-06
PNEUMATIC PRESSURE SENSOR
Page 2 of 4
PR-243 Pressure Transducer with mA Output
TYPICAL APPLICATIONS (wiring diagrams)
Wiring PR-243 Units with VDC Output Wiring PR-243 Units with mA Output
PR-243 Pressure Transducer with VDC Output
TYPICAL APPLICATIONS (wiring diagrams)
Input Signal
+
Common
+ +
Shield/Ground
Controller / Meter / Recorder
mA Output Transducer Only 12–40 VDC Power Supply
Input Signal +
Common
+
Shield/Ground
Controller / Meter / Recorder mA Output Transducer Only
Figure 1 and Figure 2 illustrate typical wiring diagrams for the PR-243,
4–20 mA, two-wire output pressure transducers.
Figure 1 – Wiring for mA Output Transducers with an External DC Power Supply
Figure 2 – Wiring for mA Output Transducers where the Controller or Meter has
an Internal DC Power Supply
Figure 3 and Figure 4 illustrate typical wiring diagrams for the PR-243,
0–5/0–10 VDC output pressure transducers.
Figure 3 – Wiring for VDC Pressure Transducers when applied with External AC
Supply
Signal
+
Common
Supply
Neutral
Hot
O
Input Signal +
Common
+
Shield/Ground
Controller / Meter / Recorder
VDC Output Transducer Only 12–35 VAC Transformer
Figure 4 – Wiring for VDC Pressure Transducers when applied with External DC
Power Supply
Signal
+
Common
Supply
O
Input Signal
+
Common
+
Shield/Ground
Controller / Meter / Recorder
VDC Output Transducer Only 12–40 VDC Power Supply
RoHS
+
-
S
Z
LEGEND
Supply Voltage
Output
Span Adjust
Zero Adjust +
-
O
S
Z
LEGEND
Supply Voltage
Common
Output
Span Adjust
Zero Adjust
1/4" Brass
Hose Barb
(5/32" I.D. Tubing)
ZERO
SPAN
+
-
O
Z
S
S2
ON
S1
ON
1/4" Brass
Hose Barb
(5/32" I.D. Tubing)
ZERO
SPAN
+
-
Z
S
S1
ON
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-243 transducer.
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-243 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.
The PR-243 mA output pressure transducers are 4–20 mA output units
powered with a 12–40 VDC supply.
The following describes the proper wiring of these pressure transducers with
mA output:
1. Remove the terminal block by carefully pulling it off the circuit board.
2. Locate the [+] and [-] terminal markings on the board.
3. Attach the supply voltage to the [+] lead.
4. Connect the 4–20 mA output ([-] terminal) to the controller’s input terminal.
5. Ensure that the power supply common is attached to the common bus of
the controller.
6. Re-insert the terminal block to the circuit board and apply power to the unit.
7. Check for the appropriate output signal using an ampmeter set on DC
milliamps connected in series with the [-] terminal.
The PR-243 pressure transducers with VDC output are field selectable 0–5 VDC
or 0–10 VDC output and can be powered with either a 12–40 VDC or 12–35 VAC.
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 [0] 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.