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PR-274/275 Pressure Sensor
Brand: Mamac
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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- Packing - Enclosure
- Pressure Range - pa: (0 to 25)/(-12.5 to 12.5)
- Output - 4-20 mA 2-Wire
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
- 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
- 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
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