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Title: The Slotted Plate DP Meter
Author: Daniel J. Rudroff
Source: American Gas Association 2004
Year Published: 2004
Abstract: The challenge has always been to develop an accurate flow meter that has a high turn down, a short installation length, is easy to use, is not greatly affected by liquids, and is reasonably inexpensive. Through years of research, the Texas Engineering Experiment Station which is part of The Texas A&M University System, has developed a meter that uses a slotted plate to create the differential pressure. This meter fulfills the requirements of simplicity, high accuracy, high turndown, ease of use, and short installation length. Flowline Meters, Inc. licensed the slotted plate technology from The Texas A&M University System, then developed and patented the hardware to go along with the meter. This hardware includes a centering device for orifice flange unions and a low cost meter that like the high pressure meters is complete with the five diameters pre run, three diameters post run, and a standard installed thermowell. The formula for the single plate slotted DP meter can be easily put into existing flow computers making the slotted DP Meter easy to use with existing technology and equipment.

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