MAMAC Systems PR-275-R2-VDC Pressure Sensor

The MAMAC Systems PR-275-R2-VDC is a high-precision differential pressure transducer designed for critical building automation systems. This unit features a micro-machined glass-on-silicon (Gl-Si) capacitance sensor, eliminating common issues like zero drift and calibration shifts from overpressure. As a professional-grade low pressure sensor, it offers exceptional stability for monitoring duct static pressure, filter status, and cleanroom environments. The PR-275-R2-VDC is highly versatile, featuring six field selectable pressure ranges—including 0-1"wc, 0-0.5"wc, 0-0.25"wc, and various bi-directional settings—allowing for precise matching to specific site requirements. The 0-5Vdc or 0-10Vdc field selectable output ensures seamless integration with most HVAC controllers and industrial process equipment. Its rugged panel mount chassis and unpluggable terminal blocks simplify installation in crowded control cabinets, while short circuit and reverse polarity protections safeguard the device during commissioning. This 100% solid-state static pressure transmitter delivers NIST-traceable accuracy of ±1% full scale across all selected ranges.

Key Benefits

• Versatile Configuration: Six field selectable linear or compound ranges reduce inventory overhead for service technicians.
• Advanced Sensor Tech: Glass-on-silicon capacitance technology provides superior resistance to vibration and temperature-related drift.
• Universal Compatibility: Accepts 12-40Vdc or 12-35Vac supply voltage and offers selectable 0-5Vdc or 0-10Vdc outputs.
• Streamlined Installation: Designed with a compact panel mount chassis and unpluggable screw terminal blocks for 12 AWG maximum wire.
• Precision Adjustments: Non-interacting zero and span trimmers allow for accurate field calibration without cross-contamination of settings.

Common Questions

How do I change the pressure range on the PR-275-R2-VDC?
Range selection is managed via internal jumpers or dip switches on the circuit board. Refer to the range configuration table to set the device for 0-1"wc, 0-0.5"wc, or your desired bi-directional range.

Can this sensor be used for liquid pressure monitoring?
No, this unit is engineered specifically for clean dry air or inert gases. Use with liquids or corrosive media will damage the Gl-Si sensor element.

Is the output signal affected by the supply voltage type?
The device automatically configures for AC or DC input. The 0-5/10Vdc output remains stable and regulated regardless of whether you are using a 24Vac transformer or a 24Vdc power supply.

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.