Konvergerande del
Vatten
Bernoullis princip
Ja
Att mäta flödet av vätska
A differential pressure flow meter: This uses a pressure difference created by a sensing element (for example, an orifice plate or a Venturi tube) to determine the rate of a flow. A differential pressure transmitter has a high- and low-pressure port to which the high- and low-pressure side of the sensing element will be connected and it produces a standard signal of 4 to 20 mA that corresponds to the flow rate.
The following figure shows a Rosemount differential pressure transmitter: