What types of flowmeters create pressure conditions in a pipe?

Flow nozzles, orifice plates, and Venturi meters create pressure changes in a pipe system by their design and function. These devices work based on the principle of constricting the flow of liquid or gas, which causes a change in pressure that can be measured.

When fluid flows through these constricted areas, two important phenomena occur: the flow velocity increases and the pressure decreases according to Bernoulli's principle. This creates a differential pressure across the flowmeter, which is then used to calculate the flow rate of the fluid.

The effectiveness of these devices relies on the specific geometry of the flow path, which creates a measurable pressure drop in relation to the flow rate, making them essential tools in flow measurement and control in various industrial applications.

Other flow measurement technologies, such as capacitance probes, ultrasonic transducers, bubbler systems, and electromagnetic flowmeters, do not fundamentally operate on the principle of creating measurable pressure differences in the same manner as the aforementioned devices.