Airflow Grids

Wilson Flow Grids

These simple, highly accurate, durable Airflow flow grids are a cost effective solution for fixed clean air flow monitoring in ducts and pipes. Perfect for HVAC, building management systems, process control, research development, and wind tunnel air flow monitoring. All flow grids in sizes up to 0.64 m2 are supplied with a calibration certificate, curve and pressure drop/output signal data. Larger units require onsite calibration.

The Grid consists of a set of parallel tubes connected by manifolds. The tubes are perforated in such a way as to provide a single differential pressure signal, which is proportional to the square of the mean velocity in the airway. By connecting the output tubes to a suitable instrument, the pressure difference and hence the volume flow rate can be easily measured.

Flow grids will transmit a comparable and repeatable differential pressure proportional to the average air flow. Designed for a wide variety of temperate and environmental conditions, they are often found in applications where many other flow measuring devices are unsuitable.

Ideal applications include HVAC, ductwork systems, wind tunnels, process air/gas lines, marine/offshore/petro-chem and calibration.

Features and Benefits

• Choice of standard, radial, and ‘X’ grid formats
• Suitable for clean air velocities between 1.5 and 30 m/sec (6000 ft/min)
• Reliable device for turbulent duct conditions
• Stainless steel construction standard; plastic/alternative material versions to special order
• No moving parts assure long–term reliability and minimal maintenance
• Interface with compatible manometers and pressure transmitters for direct readout and control of air volume flow