MAMAC Systems PR-264 User Manual

8189 Century Boulevard • Minneapolis, MN 55317-8002 • USA

800-843-5116 • 952-556-4900 • Fax [phone]

[email protected] • www.mamacsys.com

For Additional Information See PR-264 Data Sheet

SPECIFICATIONS

Accuracy*: ± 1% FS

Overpressure: 300%

Burst Pressure: 500%

Supply Voltage: 12–40 VDC

12–35 VAC (VDC output units only)

Supply Current: VDC Units – 10 mA max.
mA Units – 20 mA max.

Enclosure: 18 Ga C. R. Steel NEMA 4 (IP-65)

Finish: Baked on enamel – PMS2GR88B

EMC Conformance: EN 55022, 55024, 61000-3-3,

61000-4-2, 3, 4, 5, 6 & 11

Compensated Temp Range: 0°F to 180°F
(-18°C to 82°C)

T. C. Error: ±0.025%/°F (.03%/°C)

Media Compatibility: Liquid/gases compatible to

316L stainless steel

Port Connection: 1/8" NPT

Environmental: 10–90%RH Non-Condensing

RoHS

INSTALLATION

Inspection

Requirements

Inspect the package for damage. If damaged, notify the
appropriate carrier immediately. If undamaged, open the
package and inspect the device for obvious damage.
Return damaged products.

• Tools (not provided)

• Appropriate accessories

• Two #8 self-tapping mounting screws (not provided)

• Training: Installer must be a qualified, experienced technician

Warning:

• Do not use on oxygen service, in an explosive/hazardous
environment, or with flammable/combustible media.

• Disconnect power supply before installation to prevent
electrical shock and equipment damage.

• Make all connections in accordance with the job wiring diagram
and in accordance with national and local electrical codes. Use
copper conductors only.

Model PR-264

Technical Information

TI.264-07

PRESSURE SENSOR

- Digital Volt-ohm Meter (DVM)

- Appropriate screwdriver for mounting screws

- Appropriate drill and drill bit for mounting screws

Termination: Unpluggable screw terminal block

Wire Size: 12 Ga max.

Load Impedance: 3K ohms max. at 40 VDC (mA

output units)
1K ohms min. (VDC output units)

Weight: Enclosure 1.0 lbs. (.45 kg)

*Includes non-linearity, hysteresis and non-repeatability

ORDERING INFORMATION: PR-264-

RANGE OUTPUT

R1 (psig)

R2 (psig)

R3 (psig)

R4 (kPa)

R5 (kPa)

R6 (kPa)

0 to 100 / 0 to 50 / 0 to 25

0 to 300 / 0 to 150 / 0 to 75

0 to 500 / 0 to 250 / 0 to 125

0 to 700 / 0 to 350 / 0 to 175

0 to 2000 / 0 to 1000 / 0 to 500

0 to 3500 / 0 to 1750 / 0 to 875

mA

(4–20 mA 2-wire)

VDC

(0–5 VDC/0 –10 VDC
field selectable)

Mounting

Wiring

Caution:

• Use electrostatic discharge precautions (e.g., use of wrist
straps) during installation and wiring to prevent equipment
damage.

• Avoid locations where severe shock or vibration, excessive
moisture or corrosive fumes are present. NEMA Type 4
housings are intended for outdoor use primarily to provide
a degree of protection against wind-blown dust, rain, and
hose-directed water.

• Do not exceed ratings of the device.

The PR-264 must be mounted on a vertical surface with the 1/8"
NPT connection pointed downward. Refer to Figure 7 for
mounting dimensions.

1. Remove the transducer cover using a Phillips head
screwdriver.

2. Select the mounting location.

3. Mount transducer on a vertical surface with two #8 self-tapping
screws (not provided).

4. Pull wires through bottom of enclosure and make necessary
connections.

5. Replace the unit cover and make pneumatic connections.

Use maximum 12 AWG wire for wiring terminals. Use copper or
stainless steel tubing for the connection to the transducer. Refer
to Figures 1, 2, 3, & 4 for wiring information and Figures 5 & 6 for
switch designations.

(Wiring Instructions continued on pages 2 and 3.)

Page 2 of 4

Model PR-264

Technical Information

TI.264-07

RoHS

PR-264 Pressure Transducer with mA Output

LEGEND

+

Supply Voltage

-

Output

S

Span Adjust

Z

Zero Adjust

ZERO

SPAN

PR-264 pressure transducers with 4–20 mA output units are 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.

+ -

Z S

S1

ON

1/8" NPT

Female

PRESSURE SENSOR

Wiring PR-264 Units with VDC OutputWiring PR-264 Units with mA Output

PR-264 Pressure Transducer with VDC Output

LEGEND

+

Supply Voltage

-

Common

O

Output

S

Span Adjust

Z

Zero Adjust

ZERO

SPAN

PR-264 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 [O] terminal markings on the board.

3. Attach the power wires to the [+] and [-] terminals. The [-] terminal is also the
negative output 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 across
the [O] and [-] terminals.

+

-

O

Z S

S1

ON

S2

ON

1/8" NPT

Female

TYPICAL APPLICATIONS (wiring diagrams)

Figure 1 and Figure 2 illustrate typical wiring diagrams for the PR-264,

4–20 mA, two-wire output pressure transducers.

Figure 1 – Wiring for mA Output Pressure Transducers with an External DC
Power Supply

mA Output Transducer Only 12–40 VDC Power Supply

+

Figure 2 – Wiring for mA Output Transducers where the Controller or
Meter has Internal DC Power Supply

mA Output Transducer Only

+

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-264 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-264 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.

+

Controller / Meter / Recorder

Input Signal

+

Common

Shield/Ground

Controller / Meter / Recorder

Input Signal

+

Common

Shield/Ground

TYPICAL APPLICATIONS (wiring diagrams)

Figure 3 and Figure 4 illustrate typical wiring diagrams for the PR-264,

0–5/0 –10 VDC output pressure transducers.

Figure 3 – Wiring for VDC Output Pressure Transducers When Applied with
External AC Supply

VDC Output Transducer Only 12–35 VAC Transformer

Supply

Signal

Supply

Signal

+

O

Controller / Meter / Recorder

+

O

Controller / Meter / Recorder

Common

Figure 4 – Wiring for VDC Output Pressure Transducers When Applied with
External DC Power Supply

VDC Output Transducer Only 12–40 VDC Power Supply

Common

Hot

+

Neutral

Input Signal

+

Common

Shield/Ground

+

Input Signal

+

Common

Shield/Ground

Page 3 of 4

Model PR-264

Technical Information

TI.264-07

RoHS

Range Configuration:

R1 / R4

0–100 psig / 0–700 kPa (default)

0–50 psig / 0–350 kPa

0–25 psig / 0–175 kPa

R2 / R5

0–300 psig / 0–2000 kPa (default)

0–150 psig / 0–1000 kPa

0–75 psig / 0–500 kPa

R3 / R6

0–500 psig / 0–3500 kPa (default)

0–250 psig / 0–1750 kPa

0–125 psig / 0–875 kPa

Figure 5 – Range Configurations for Pressure Transducers with mA Outputs

Switch 1 (S1)

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

+ -

PRESSURE SENSOR

mA Output

Z S

1

S1

ON

2

Range Configuration:

R1 / R4

0–100 psig / 0–700 kPa (default)

0–50 psig / 0–350 kPa

0–25 psig / 0–175 kPa

R2 / R5

0–300 psig / 0–2000 kPa (default)

0–150 psig / 0–1000 kPa

0–75 psig / 0–500 kPa

R3 / R6

0–500 psig / 0–3500 kPa (default)

0–250 psig / 0–1750 kPa

0–125 psig / 0–875 kPa

Output Configuration:

0–10 VDC (default)

0–5 VDC

Switch 1 (S1)

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

O N

1

2

Switch 2 (S2)

O N

1

2

O N

1

2

Figure 6 – Range Configurations for Pressure Transducers with VDC Outputs

+ -

VDC Output

O

Z S

1

S1

ON

ON

1

2

2

S2

Page 4 of 4

Model PR-264

Technical Information

TI.264-07

RoHS

CHECKOUT DIMENSIONAL DATA

Transducer
Operation

CALIBRATION

1. Verify that the unit is mounted in the correct position.

2. Verify appropriate input signal and supply voltage.

CAUTION: Never connect 120 VAC to these transducers.
Never connect AC voltage to a unit intended for DC supply.

3. Verify appropriate configuration range.

This is a rough functional check only.

1. Adjust the pressure to obtain maximum output signal for
appropriate range.

2. Output should be 20 mA or 5 or 10 VDC.

3. Adjust the pressure to obtain minimum output signal.

4. Output should be 4 mA or 0 VDC.

NOTE: The PR-264 is a highly accurate device. For
applications requiring a high degree of accuracy, the use of
laboratory quality meters and gauges are recommended.

All units are factory calibrated to meet or exceed published
specifications. If field adjustment is necessary, follow the
instructions below.

Calibration of PR-264 mA Units

Figure 7 – PR-264 Pressure Transducer dimensions shown in inches and
millimeters (mm).

PRESSURE SENSOR

MAINTENANCE

FIELD REPAIR

WARRANTY

1. Connect terminals [+] and [-] to the appropriate power
source.

2. Connect the DVM in series on the [-] terminal.

3. Apply low pressure to the unit and carefully adjust the zero
trimmer [Z] to obtain desired low output.

4. Apply high pressure to the unit and adjust span trimmer [S]
to obtain the desired high output pressure.

5. Repeat steps 3 and 4 until desired calibration is achieved.

Calibration of PR-264 VDC Units

1. Connect terminals [+] and [-] to the appropriate power
source. The [-] terminal is also the negative output terminal.

2. Connect the DVM on DC volts across [0] and [-] terminal.

3. Apply low pressure to the unit and carefully adjust the zero
trimmer [Z] to obtain desired low output.

4. Apply high pressure to the unit and adjust span trimmer [S]
to obtain the desired high output pressure.

5. Repeat steps 3 and 4 until desired calibration is achieved.

Regular maintenance of the total system is recommended to
assure sustained optimum performance.

None. Replace with a functional unit.

See Data Sheet for additional information.

For Technical / Application Assistance call your nearest office

8189 Century Boulevard • Minneapolis, MN 55317-8002 • USA

800-843-5116 • 952-556-4900 • Fax [phone]

[email protected] • www.mamacsys.com

EUROPE

4200 Waterside Centre

Solihull Parkway

Birmingham • West Midlands

B37 7YN • United Kingdom

01384-271113 • Fax [phone]

ASIA

1 Fullerton Road #02-01

One Fullerton

Singapore • 049213

65-31581826 • Fax [phone]

905-474-9215 • Fax [phone]

08-8395-4333 • Fax [phone]

CANADA

675 Cochrane Drive

East Tower • 6th Floor

Toronto • Ontario

L3R 0B8 • Canada

AUSTRALIA

4 Armiger Court, Unit 2

Adelaide • S.A.

5088 • Australia

MAMAC Systems, Inc., reserves the right to change any specifications
without notice to improve performance, reliability, or function of our products.

TI.264-07