Dwyer Instruments Series AVUL Air Velocity Transmitter

Dwyer Instruments’ Series AVUL Air Velocity Transmitter is a versatile, duct-mount thermal anemometer that is suitable for measuring air velocity or volumetric airflow in VAV systems or building ducts. By measuring the heat loss between its two sensing elements as air flows, the product converts this reading into air velocity or volumetric airflow, without the potential for getting clogged like a pitot tube.

Accuracy ranges of 3% and 5% are available to suit a variety of needs. The optional BACnet or MODBUS Communication Protocol allows units to be daisy-chained together while providing access to all of the velocity and volumetric flow data, as well as additional information such as air temperature.

All models can be wired for 4 to 20 mA, 0 to 5/10 VDC output or simultaneous current and voltage output, providing a universal connection to PLCs and monitoring equipment. The optional, integral LCD or A-435-A portable remote display tool provides an additional and convenient way to locally monitor process values and configure the unit.

Onboard dip switches allow users to quickly and easily select the full scale velocity range, output type, engineering units and velocity or volumetric flow mode, saving time on configuration and installation.