Hot-film anemometers use a very fine film electrically heated up to some temperature above the ambient. Air flowing past the film has a cooling effect on the film. As the electrical resistance of most metals is dependent upon the temperature of the metal, a relationship can be obtained between the resistance of the film and the flow speed.

SPECIFICATIONS:

Wind Speed Measuring Range	0.3~30m/s
Accuracy of Temperature	3% + 0.1dgt
Air Velocity Unit	m/s,Ft/min,Knots,km/h,Mph
Wind Volume Range	0~999900m⊃3;/min
Max/Min Air Velocity Measuring
Average And Current Air Velocity Measuring
Temperature Measuring Range	-10~45C
Accuracy of Temperature	2C
C /F Selection
Backlight Display
Low Battery Indication
Data Hold Function	---
Resolution	0.1m/s
USB Transmission
Data Store	500 groups
Auto Power Off

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