MAMAC Systems PR-275-R3-VDC Pressure Sensor

For high-precision air pressure monitoring, the MAMAC Systems PR-275-R3-VDC is a versatile low pressure sensor engineered with glass-on-silicon (Gl-Si) capacitance technology. This veteran-grade differential pressure transducer provides superior stability by addressing common field issues like zero drift and calibration shift. It offers six field selectable pressure ranges—including 0-5"wc, 0-2.5"wc, 0-1.25"wc, and compound ranges like -2.5" to 2.5"wc—allowing technicians to standardize on a single part for multiple HVAC duct pressure and clean room monitoring applications. The 0-5Vdc or 0-10Vdc field selectable output ensures seamless integration with most BMS controllers, while the panel mount chassis simplifies installation in narrow control cabinets. Supporting a wide supply voltage of 12-40Vdc or 12-35Vac, this unit is built for rugged performance in environments ranging from 0°F to 175°F.

• Versatile Configuration: Features six adjustable pressure ranges and dual voltage outputs to reduce truck stock requirements.
• Enhanced Stability: The Gl-Si sensor technology provides NIST traceable accuracy and minimizes sensitivity to overpressure.
• Reliable Protection: Includes short circuit and reverse polarity protection to prevent damage from common wiring errors.
• Easy Calibration: Equipped with non-interacting zero and span trimmers for precise field adjustments.

• How do I change the output signal? Use the internal dip switches to toggle between 0-5 VDC and 0-10 VDC to match your controller’s requirements.
• Can this be used for bi-directional sensing? Yes, the R3 configuration supports multiple compound pressure ranges for measuring both positive and negative pressures.
• What tubing is required for the pneumatic connections? We recommend using standard 1/4" O.D. (5/32" I.D.) flexible tubing for the high and low ports.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.