Abstract: A thermal mass flowmeter with temperature correction. The flowmeter includes a bridge, a signal conditioner, and a balancer. The balancer provides a bridge signal as feedback to the bridge that balances a flow sensor signal and the temperature sensor signal from the bridge. The flow sensor signal or the temperature sensor signal are adjusted by an overheat factor and a temperature correction factor. The temperature correction factor is determined using a predetermined function of a temperature of the fluid. Methods of determining parameters of the predefined function and using the flowmeter for determining a flow rate of the fluid are disclosed. The flowmeter provides device for determining a flow rate of a fluid over a wide range of temperature and flow rates as well as providing device for determining the temperature of the fluid.

Abstract: A flow meter of the pitot type. The meter incorporates a series of apertures along a probe body for exposure to a fluid stream. The result is a number of datum which are averaged and correlated to be representative of the flow within a conduit. Aberrations encountered in noncircular ducting or other irregularities are compensated by correction. The disclosure further sets forth the use of an apparatus to effect the measurements.