orifice meter


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Related to orifice meter: Venturi meter

orifice meter

[′ȯr·ə·fəs ‚med·ər]
(engineering)
An instrument that measures fluid flow by recording differential pressure across a restriction placed in the flow stream and the static or actual pressure acting on the system.
References in periodicals archive ?
Figure 2 shows a single chamber orifice meter with a downstream pressure tap and an extra DP transmitter.
The customer's installation consisted of a reciprocating compressor station with four inlet and outlet orifice meters.
Meter tubes, also called "meter runs," are critical parts of the orifice meter because the honed surface finish influences accuracy.
After calibration in the supplier's flow lab, they provide performance comparable to traditional orifice meters, but with no more than two diameters of straight pipe upstream and downstream, and no additional flow conditioning.
These formulas are derived from the basic equation for the flow rate through an orifice meter, and estimate errors in measured flow rate due to changes in physical dimensions of the plate and the downstream flow field.
However, although wet gas flow DP has a significantly higher standard deviation than the dry gas flow DPs, massed orifice meter wet gas data sets have shown that the average DP is still repeatable and reproducible.
A rotameter, specially designed for diesel engine exhaust gas was used to measure the flow rate of the exhaust and the same is verified using an orifice meter.
The pipes, attached to an orifice meter to check the flow of secondary coolant, are similar to the one that ruptured and caused the fatal accident.
Reducing the bore diameter will increase the pressure drop of the orifice meter and report incorrect mass flow.
The checking was mainly conducted around the downstream part of the orifice meter for secondary cooling water.
For over 150 years, American Meter has pioneered many of the major developments in gas measurement: iron-case meters for the higher pressures of natural gas; coin-operated prepayment meters that helped increase gas usage; the first practical orifice meter, lighter, easier-to-handle aluminum case meters; synthetic, molded diaphragms for residential meters and temperature compensating indexes.
A proper orifice meter installation is one key to accurate flow measurement.