A hot-wire anemometer is the most popular type of temperature anemometers measuring the air velocity of devices and appliances. The construction of a hot-wire anemometer comprises a fine wire element that is electrically heated, which is supported by a needle at the point. It's ideally suited for carrying out surveys or inspections of ventilation or air conditioning units and pretty anything that requires air velocity to be measured.
A hot wire anemometer works by heating through a constant current. As the movement of air passes over wire it has a cooling effect, it's then this changing of temperature on the metal and it's electrical resistance which accurately determines the air speed and pressure.
RS has a range of Hot-Wire Anemometers from some leading brands such as Testo, Beha-Amprobe and our very own RS PRO. All the hot-wire anemometers can be calibrated to ensure they perform accurately and reliably. This is done in-house to an RSCAL standard. We have technical advisors on hand if you have questions.