Alnor Rotating Vanes

Not every airflow point is low and laminar. Many life science HVAC measurements involve variable, turbulent streams at grilles, registers, and ducts. Alnor Rotating Vane Anemometers excel in these conditions, providing dependable velocity and volumetric flow readings that help technicians balance systems and verify performance quickly.

Why Rotating Vanes

• Stable in turbulence: Mechanical sensing handles swirl and fluctuating streams common at terminal devices.
• Quick to deploy: Minimal setup means faster measurements across large routes.
• Durable: Field-ready construction stands up to daily use in demanding environments.

Where They Are Used

• Supply and return grilles: Check airflow distribution and identify imbalances between rooms.
• Duct sections: Verify flows after VAV boxes, terminal units, and dampers.
• Process ventilation: Assess airflow in local exhaust applications supporting lab equipment.

Applications in Life Sciences

• Cleanroom suites: Confirm terminal flows to support pressurization and ACH targets alongside other measurements.
• Laboratory areas: Balance general ventilation to support thermal comfort and fume hood performance.
• Healthcare spaces: Validate diffuser performance in patient areas and support ventilation strategies.

Working Efficiently

• Use averaging functions where available to smooth short-term fluctuations and improve repeatability.
• Apply cone attachments or flow aids, when appropriate, to better characterize terminal devices.
• Record grille size, type, and measurement conditions to support consistent reporting.

Complementary Tools

• Pair rotating vanes with micromanometers for pressure checks and with capture hoods for direct volumetric flow at terminals.
• Use thermal anemometers for low-velocity zones where rotating vanes are less sensitive.

Calibration and Documentation

• Periodic calibration helps maintain measurement confidence. Certificates with traceable references support quality system documentation.

Alnor Rotating Vane Anemometers bring speed and reliability to higher-flow measurements — a practical choice for TAB professionals and facility teams who need consistent results across a range of HVAC conditions in labs, cleanrooms, and healthcare environments.