SERIES STRA

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Dwyer Series STRA | Duct Mounted Airflow Measurement Station with Honeycomb

DWYER SERIES STRA | DUCT MOUNTED AIRFLOW MEASUREMENT STATION WITH HOMEYCOMB

The Dwyer Series FLST Air Flow Station features an elliptical sensing manifold for accurate, low-pressure-drop airflow measurement in HVAC ducts and fan discharges.

  • Honeycomb airflow straightening section with 1/2″ opening by 3″ depth
  • Low signal-to-noise ratio
  • Factory mounted and pre-piped in a flanged duct section (casing)
  • Standard construction includes galvanized casing and 6063-T5 anodized aluminum flow sensors

DWYER SERIES STRA | DUCT MOUNTED AIRFLOW MEASUREMENT STATION WITH HOMEYCOMB

The Dwyer Series STRA  is engineered for HVAC duct systems where highly turbulent air conditions exist at the measurement point. It utilizes an airflow averaging element that samples total and static pressures through strategically located sensing ports, generating a differential (velocity) pressure signal. The station features a factory-mounted honeycomb straightener with a 1/2″ opening and 3″ depth to stabilize air profiles before they reach the sensors. Built with 6063-T5 anodized aluminum sensors and a G90 galvanized steel casing, it provides a low signal-to-noise ratio and is compatible with standard differential pressure gages, transmitters, or switches.

PRODUCT USES:

  • Building Air Intake/Exhaust: Measuring precise flow rates for outdoor air intake and exhaust systems.
    HVAC Flow Management: Monitoring airflow in large-scale commercial HVAC ductwork.
    Turbulent Duct Systems: Measuring flow where limited straight duct runs create high turbulence.
    Fan Performance Monitoring: Tracking air volume delivered by fans or blowers.

Technical Sheets

Instruction Manual

Catalog Page

Specifications

DWYER SERIES STRA | DUCT MOUNTED AIRFLOW MEASUREMENT STATION WITH HOMEYCOMB – KEY SPECIFICATIONS

  • Accuracy: Within ±2% of actual flow when installed per recommendations.
  • Velocity Range: 100 to 10,000 FPM (0.51 to 51 m/s).
  • K-Factor: 0.97.
  • Wetted Materials: 6063-T5 anodized aluminum elements and 3003 aluminum airflow straighteners.
  • Temperature Limits: Up to 350°F (177°C) continuous; up to 400°F (204°C) intermittent.
  • Humidity Limits: 0 to 100% non-condensing.
  • Process Connections: 1/4″ compression fittings.
  • Casing: 16-gauge G90 galvanized steel (8″ to 12″ length depending on size).

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