MAMAC Systems PR-274-R1-VDC Low Pressure Sensor Overview
The MAMAC Systems PR-274-R1-VDC is a versatile, field-configurable low pressure sensor engineered for demanding HVAC building automation and commercial control applications. With dual field-selectable pressure ranges and dual field-selectable output options, this sensor delivers exceptional installation flexibility without the need for additional hardware or special-order variants. Its rugged NEMA 4 enclosure ensures reliable performance in challenging environments where moisture and dust are a concern.
Field-Selectable Pressure Ranges
- 0 to 10 in. w.c. (inches water column) — ideal for duct static pressure and airflow monitoring
- -0.05 to 0.05 in. w.c. — suited for very low differential pressure and clean room applications
- Pressure range selected in the field without special tools or factory configuration
Field-Selectable Output Signal
- 0–5 Vdc output — compatible with a wide range of legacy BAS and DDC controllers
- 0–10 Vdc output — standard for modern building automation systems
- Output selection made in the field for maximum installation flexibility
Power Supply
- 12–40 Vdc supply voltage
- 12–35 Vac supply voltage
- Wide input range accommodates diverse power sources found in commercial HVAC control panels
Enclosure & Construction
- NEMA 4 rated enclosure — provides protection against windblown dust, rain, splashing water, and hose-directed water
- Suitable for indoor and protected outdoor installations
- Compact, panel-mount friendly design
Key Applications
- Duct static pressure measurement and control
- Building automation system (BAS) and DDC integration
- Clean room and critical environment pressure monitoring
- Air handling unit (AHU) pressure sensing
- Filter status monitoring
- Variable air volume (VAV) system control
Why Choose the MAMAC PR-274-R1-VDC?
MAMAC Systems is a trusted name in HVAC sensing and control. The PR-274-R1-VDC eliminates the need to stock multiple sensor variants by combining two pressure ranges and two output signals in a single, field-configurable unit. The wide supply voltage range and NEMA 4 enclosure make it a reliable, long-lasting choice for commercial and light industrial HVAC installations.
