Low velocity performance of a bronze bearing vane anemometer

Performance of bronze bearing vane anemometer is evaluated over the speed range of 64 to 690 feet per minute including starting speed and stopping speed. The tests were performed in the NBS Low Velocity Airflow Facility which provides a uniform flow of low turbulence and uses a laser velocimeter as the velocity standard. The rotary vane anemometer tested for this report is a commercially available instrument used in the mining industry and elsewhere as a portable anemometer. It was supplied for test by the U.S. Mining Enforcement and Safety Administration (MESA) at the request of the U.S. Bureau of Mines.