View source for Sail switch

A '''sail switch''', '''vane switch''' or '''flow switch''' is a [[Machine|mechanical]] [[switch]] that is actuated on or off in response to the flow or non-flow of a fluid such as air or water.<ref>{{cite journal |author=Matthew J. Darr |display-authors=et. al. |title=A Robust Sensor for Monitoring the Operational Status of Agricultural Ventilation Fans |journal=Transactions of the ASABE |date=2007 |volume=50 |issue=3 |page=1019 |doi=10.13031/2013.23142}}</ref> A sail switch typically operates through the use of a [[paddle]] or a diaphragm which gets displaced due to the force of fluid or air moving past it. Sail switches find application in the detection of fluid flow and measurement of [[Mechanical fan|fan]] speeds.<ref name=hof>{{cite journal |author=Steven J. Hoff |display-authors=et. al. |title=Real-Time Airflow Rate Measurements from Mechanically Ventilated Animal Buildings |journal=Journal of the Air & Waste Management Association |date=June 2009 |volume=59 |issue=6 |page=685 |doi=10.3155/1047-3289.59.6.683|pmid=19603736 |s2cid=46390769 |doi-access=free }}</ref> A sail switch might be used to protect a fan forced pellet stove, central heating system, electric heating element from being energized before the air flow from the blower is established.<ref name=hof/> Sail switches might also be used to alarm if a ventilation fan in a hazardous location fails and air flow has stopped. For some HVAC systems, a sail switch can activate an electronic air cleaner, a humidifier, or other equipment in response to airflow from the system fan.<ref>{{cite web
|url=http://electronicaircleaners.com/s688a1007.aspx|title=Honeywell S688A1007 Sail Switch SPDT|work=Bel-Aire|access-date=20 December 2015}}</ref>

==References==
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==External links==
* [https://peecoflowswitch.com/ Vane Style Flow Switches]

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{{Switches}}
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[[Category:Switches]]


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