| 摘要 |
A flow measuring device for use with a heating, ventilation and air-conditioning (HVAC) system includes a vane being positionable in an airstream, the vane being rotatably positionable between a first minimum air mass flow disposition and a second maximum air mass flow disposition, the vane being biased in the first minimum air mass flow disposition, the disposition of the vane being responsive in part to an impingement of an air mass flow on the vane. A measuring device is operably coupled to the vane for measuring the disposition of the vane and for providing an output communication of the vane disposition, the vane disposition having a known relationship to the air mass flow. A method of use of the flow measuring device and calibration of the flow measuring device are included.
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