Balometers / Air Capture Hoods Measure volume flows through hepa filters, grilles etc.
Calibration service also available for many makes & models of instruments contact calibration@bis.fm for more information.
Cup Anemometers / Differential Pressure Anemometers Rotating cup anemometers for measurement of wind velocity. Differential pressure anemometers for the measuremnt of airflow using fundimental principles.
Thermal Anemometers Thermal / Hot wire anemometers for the measurement of air velocity.