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Mamac Pressure Sensor, PR-274/275

PR-274/275 Pressure Sensor

Brand: Mamac
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The PR-274/275 incorporates a new micro-machined glass-on-silicon (Gl-Si) capacitance sensor. 

This technology revolutionizes very low pressure measurement. 

Temperature related zero drift, calibration shift due to overpressure, non-repeatability, non-linearity, and extremely low pressure sensitivity have been some of the problems which have plagued the controls industry. 

The PR-274/275 with the new Gl-Si technology not only addresses all of the above shortcomings, but for the first time offers a reliable, accurate means to measure and control building/room pressure, air flow, duct pressure, filter pressure drop, or any other extremely low pressure application. 

Up to six field selectable direct or compound ranges, two enclosure types, field selectable outputs, fully temperature compensated NIST traceable accuracy, non-interacting zero and span adjustments and short circuit and reverse polarity protected output.

1 - 12 of 32 Part Numbers
PR-274-R1-MA
PR-274-R1-MA
  • Packing - Enclosure
  • Pressure Range - Inches WC: (0 to 0.10)/(-0.05 to 0.05)
  • Output - 4-20 mA 2-Wire
PR-274-R1-VDC
PR-274-R1-VDC
  • Packing - Enclosure
  • Pressure Range - Inches WC: (0 to 0.10)/(-0.05 to 0.05)
  • Output - 0-5 Vdc or 0-10 Vdc Field Selectable
PR-274-R2-MA
PR-274-R2-MA
  • Packing - Enclosure
  • Pressure Range - Inches Wc: (0 to 1)/(0 to 0.5)/(0 to 0.25)/(-0.5 to 0.5)/(-0.25 to 0.25)/(-0.125 to 0.125)
  • Output - 4-20 mA 2-Wire
PR-274-R2-VDC
PR-274-R2-VDC
  • Packing - Enclosure
  • Pressure Range - Inches Wc: (0 to 1)/(0 to 0.5)/(0 to 0.25)/(-0.5 to 0.5)/(-0.25 to 0.25)/(-0.125 to 0.125)
  • Output - 0-5 Vdc or 0-10 Vdc Field Selectable
PR-274-R3-MA
PR-274-R3-MA
  • Packing - Enclosure
  • Pressure Range - Inches WC: (0 to 5)/(0 to 2.5)/(0 to 1.25)/(-2.5 to 2.5)/(-1.25 to 1.25)/(-0.625 to 0.625)
  • Output - 4-20 mA 2-Wire
PR-274-R3-VDC
PR-274-R3-VDC
  • Packing - Enclosure
  • Pressure Range - Inches WC: (0 to 5)/(0 to 2.5)/(0 to 1.25)/(-2.5 to 2.5)/(-1.25 to 1.25)/(-0.625 to 0.625)
  • Output - 0-5 Vdc or 0-10 Vdc Field Selectable
PR-274-R4-MA
PR-274-R4-MA
  • Packing - Enclosure
  • Pressure Range - Inches WC: (0 to 30)/(0 to 15)/(0 to 7.5)/(-15 to 15)/(-7.5 to 7.5)/(-3.75 to 3.75)
  • Output - 4-20 mA 2-Wire
PR-274-R4-VDC
PR-274-R4-VDC
  • Packing - Enclosure
  • Pressure Range - Inches WC: (0 to 30)/(0 to 15)/(0 to 7.5)/(-15 to 15)/(-7.5 to 7.5)/(-3.75 to 3.75)
  • Output - 0-5 Vdc or 0-10 Vdc Field Selectable
PR-274-R5-MA
PR-274-R5-MA
  • Packing - Enclosure
  • Pressure Range - pa: (0 to 25)/(-12.5 to 12.5)
  • Output - 4-20 mA 2-Wire
PR-274-R5-VDC
PR-274-R5-VDC
  • Packing - Enclosure
  • Pressure Range - pa: (0 to 25)/(-12.5 to 12.5)
  • Output - 0-5 Vdc or 0-10 Vdc Field Selectable
PR-274-R6-MA
PR-274-R6-MA
  • Packing - Enclosure
  • Pressure Range - pa: (0 to 250)/(0 to 125)/(0 to 62.5)/(-125 to 125)/(-62.5 to 62.5)/(-31.25 to 31.25)
  • Output - 4-20 mA 2-Wire
PR-274-R6-VDC
PR-274-R6-VDC
  • Packing - Enclosure
  • Pressure Range - pa: (0 to 250)/(0 to 125)/(0 to 62.5)/(-125 to 125)/(-62.5 to 62.5)/(-31.25 to 31.25)
  • Output - 0-5 Vdc or 0-10 Vdc Field Selectable
1 - 12 of 32 Part Numbers

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Specifications

Brand

Accuracy

  • ± 1 % of Full Scale

Approvals & Certifications

  • CE
  • EMC BS EN 55022: 1998, BS EN 55024: 1998, EN 61000-3-3, EN 61000-4-2, 3, 4, 5, 6 & 11
  • RoHS

Compensated Temperature

  • -4° to 65° C (25° to 149° F)

Conduit Connection

  • 1/2” Knock-Out Conduit (.875” / 22.25 mm Diameter)

Current

  • Maximum

Enclosure Finish

  • Baked Enamel

Enclosure, Body Material

  • 18 Gauge Cold Rolled Steel

Environmental Protection

  • IP65
  • NEMA 4

Humidity

  • 10 to 90 % Relative Humidity, Non-Condensing

Load Impedance

  • 1 kiloohms Min. - Vdc Output Units
  • 1.6 kiloohms Max.

Media

  • Any Inert Gas
  • Clean Dry Air

Mounting

  • Bracket
  • Panel Mount Chassis

NACE & NIST

  • NIST Traceable Calibration

Operating Temperature

  • -18° to 80° C (0° to 176° F)

Output

  • 0-10 Vdc, Field Selectable
  • 4-20 mA, 2-Wire

Output Load

  • 1600 ohms (40 Vdc Supply Voltage Only)
  • 200 ohms (12 Vdc Supply Voltage Only)

Overpressure & Static Pressure Limits

  • psid: 10 (kPa: 69, bar: 0.6)

Pressure Range

  • bar: -0.03 to 0.03
  • kPa: -3.4 to 3.4
  • psi: -0.5 to 0.5

Supply Voltage

  • 12-35 Vac (Vdc Output Units Only)
  • 12-40 Vdc

Switch Type

  • DIP Switches

Temperature Coefficient

  • ± 0.0125 %/°F - Error
  • 0.02 %/°C - Error

Termination

  • Unpluggable Screw Terminal Block

Documentation

Data Sheets

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