An orifice plate or flange placed in a pipe that consists of a slot or a calibrated circular hole smaller than the pipe diameter. The difference in pressure between a point in the pipe upstream and a point at the orifice may be used to determine the flow in the pipe.
A plate of noncorrosive material which can be fastened between flanges or in a special fitting perpendicular to the axis of flow and having a concentric circular hole. The primary use is for the measurement of gas flow.
Plate with a central circular orifice which is clamped in a pipe or duct. Dependent on the type of plate, pressure tapping are provided as an integral part of the plate or on each side of it in the duct. The rate flow of fluid in the pipe or duct may be derived from measurement of the pressure difference across the plate.
differential pressure device consisting of a plate that restricts the flow causing a predictable pressure loss using Bernoulli's equation and the principle of the conservation of energy, may be concentric, eccentric or chord.
a flow measurement device for liquids or gases that uses a restrictive orifice plate consisting of a machined hole that produces a jet effect. Typically the orifice meter consists of a thin plate with a square edged, concentric, and circular orifice. The pressure drop of the jet effect across the orifice is proportional to the flow rate. The pressure drop can be measured with a manometer or differential pressure gauge.
This consists of a plate normal to the duct with an aperture in it, through which the fluid passes. The thickness of the plate is small in comparison with its other dimensions. The flow rate is related to the pressure difference across the plate measurement at stipulated tapping points.
a very low cost and common primary sensing element (PSE) for measuring flow. It must be used in conjunction with a d/p cell. It creates a venturi and a resulting P is developed across the plate whose square root is proportional to flow.
An orifice plate is a device which measures the rate of fluid flow. It uses the same principle as a Venturi nozzle, namely Bernoulli's principle which says that there is a relationship between the pressure of the fluid and the velocity of the fluid. When the velocity increases, the pressure decreases and vice versa.