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An anemometer is usually an instrument that measures the particular velocity of air.
The whole sensing part is installed on a vertical rotating shaft.
Beneath the action of breeze, the wind cup rotates across the shaft at a speed proportional towards the wind speed.The basic principle of the anemometer is to set a thin metal wire while in the fluid, and apply current in order to heat the metal wire for making the temperature higher versus the temperature of the substance.
The standard hot wire probe features a short and slim metal wire tensioned by two brackets.
In accordance with different purposes, the hot wire probe can even be made into double insert, triple wire, oblique line, V-shaped, X-shaped, etc.
So that you can increase the strength, sometimes the metal film must be used instead of the metal wire, and a thin metal film will likely be sprayed on a thermally insulating substrate, which is labeled a thermal film probe.