SERIES MAFS

DWYER SERIES MAFS | METAL AVERAGING AIR FLOW SENSOR FOR HVAC DUCTS

The Series MAFS  is a rugged metal averaging flow sensor designed to deliver accurate velocity pressure measurements in ducts by utilizing evenly distributed total and static pressure sensing points.

  • Blade design limits disruption of air stream
  • Lightweight aluminum construction
  • Flange mount for rectangular or square ducts

DWYER SERIES MAFS | METAL AVERAGING AIR FLOW SENSOR FOR HVAC DUCTS

The Dwyer Series MAFS Metal Averaging Flow Sensor is engineered for clean air applications where precise airflow measurement is critical. Its aerodynamic blade design minimizes airflow disruption, while its lightweight aluminum construction ensures durability and ease of installation. The probe features multiple total and static pressure measuring ports distributed along its length to provide a representative average of the velocity profile in a duct, making it ideal for use with precision air velocity gages, transmitters, and switches. It can be fully installed from the outside of round or rectangular ducts.

PRODUCT USES:

  • VAV Air Flow Measurement: Monitoring and controlling variable air volume systems.
  • Fume Hood Exhaust: Verifying exhaust flow rates in laboratory fume hoods for safety.
  • HVAC Retrofits: Upgrading existing air handling units with accurate flow sensing stations.
  • Clean Room Monitoring: Maintaining precise air exchange rates in sensitive environments.

Technical Sheets

Instruction Manual

Catalog Page

Specifications

DWYER SERIES MAFS | METAL AVERAGING AIR FLOW SENSOR FOR HVAC DUCTS – KEY SPECIFICATIONS

  • Service: Clean air.
  • Wetted Materials: Aluminum AA6063.
  • Accuracy: ±2% FS (±3% for 6″ and 48″ models).
  • Temperature Limits: 400°F (204°C) for probe; Gasket: -31 to 230°F (-35 to 110°C).
  • Velocity Range: 400 to 9,000 FPM (normal accuracy); up to 12,000 FPM maximum.
  • Process Connections: Dual barb for 3/16″ or 1/4″ ID tubing.
  • Straight Run Requirements: 5 duct diameters upstream or longest side dimension.

 

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