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The Rotron Model 2C Airflow Switch is actuated by air velocity rather than air pressure. It is designed for easy mounting on the outside of an air duct with a small light weight stainless steel vane protruding through a hole in the duct into the airstream. The switch can be used as interlock for on off purposes or as a marginal safety device where the electrical contacts are operated at a predetermined minimum flow air.
The switch is designed for commercial applications but has been used satisfactorily on certain military projects. Its acceptability on military projects is left to the evaluation of the purchaser.
Operates reliably in ambient temperatures of 35ºC to +85ºC.
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