MAMAC Systems PR-274-R3-MA Pressure Sensor

The MAMAC Systems PR-274-R3-MA is a professional-grade low pressure sensor engineered for precise performance in HVAC and industrial automation systems. This multi-range pressure transducer features six field-selectable ranges including 0-5"wc, 0-2.5"wc, 0-1.25"wc, and three bidirectional options down to -0.625 to 0.625"wc, allowing technicians to consolidate inventory across multiple applications. Designed for differential pressure monitoring in cleanrooms, static pressure control, and VAV systems, the unit utilizes a high-reliability silicone capacitive sensing element for long-term stability and minimal drift. The 4-20mA output is compatible with most building automation systems and maintains signal integrity over long cable runs. Housed in a rugged NEMA 4 enclosure, this device provides superior protection against environmental moisture and dust, ensuring reliable HVAC pressure sensing in demanding mechanical rooms. The 12-40Vdc supply voltage range accommodates standard 24Vdc power sources, simplifying field installation and wiring for contractors.

Key Benefits

• Versatile Field Setup: Six dip-switch selectable ranges reduce the need for carrying multiple part numbers for different duct static pressure requirements.
• Enhanced Durability: The NEMA 4 rating ensures the core electronics are protected from water spray and airborne contaminants.
• Accurate Calibration: Provides high-resolution measurement for critical building automation pressure sensors used in airflow management.
• Streamlined Installation: Compact footprint and clear terminal labeling facilitate fast mounting and commissioning in the field.

Common Questions

What is the maximum supply voltage for the PR-274-R3-MA?
This model operates on a wide supply voltage range from 12 to 40 Vdc, making it highly compatible with standard industrial power supplies.

Can this sensor be used for both positive and negative pressure?
Yes, the unit features selectable bidirectional ranges, such as -2.5 to 2.5"wc, making it ideal for monitoring room pressure differentials.

Is this sensor suitable for outdoor installation?
Thanks to the NEMA 4 enclosure, the PR-274-R3-MA is designed to withstand moisture and dust, though proper conduit seals should be used during installation.

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.