Description
The MAMAC Systems PR-274-R3-MA is a versatile low differential pressure sensor engineered for demanding HVAC and building automation applications. Featuring six field selectable pressure ranges and a rugged NEMA 4 enclosure, this sensor delivers accurate, reliable readings in a wide variety of installations — from clean rooms and air handlers to variable air volume systems and critical pressure monitoring environments.
Field Selectable Pressure Ranges
- 0 to 5″ w.c.
- 0 to 2.5″ w.c.
- 0 to 1.25″ w.c.
- -2.5″ w.c. to +2.5″ w.c. (bidirectional)
- -1.25″ w.c. to +1.25″ w.c. (bidirectional)
- -0.625″ w.c. to +0.625″ w.c. (bidirectional)
Electrical Specifications
- Output Signal: 4–20mA, 2-wire
- Supply Voltage: 12–40Vdc
Enclosure & Construction
- NEMA 4 rated enclosure for protection against dust, splashing water, and windblown debris
- Suitable for indoor and protected outdoor installations
Key Features & Benefits
- Six field selectable pressure ranges eliminate the need for multiple sensor SKUs on the job
- Bidirectional range options enable accurate measurement of both positive and negative pressure differentials
- 4–20mA 2-wire output ensures compatibility with virtually all building automation and DDC controllers
- Wide 12–40Vdc supply voltage range simplifies integration into existing control panels
- NEMA 4 enclosure provides robust protection in challenging installation environments
- Compact design allows for flexible mounting in tight mechanical spaces
Typical Applications
- Air handling unit static pressure monitoring
- Variable air volume (VAV) system control
- Clean room and laboratory differential pressure measurement
- Filter status monitoring
- Building automation and DDC system integration
- Duct pressure sensing
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