The American School of Gas Measurement Technology (ASGMT) has been at the forefront of flow measurement training since its inception in 1966. Over the years, ASGMT has evolved to encompass comprehensive training in measuring fluids in both gas and liquid states. With a commitment to excellence, ASGMT now offers an extensive curriculum comprising over 120 lecture classes, complemented by 54 Hands-On Product Training sessions led by industry experts, and sessions providing a brief overview of new products.

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September 15th – 18th, 2025

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February 15, 2015

  • AUTHOR: Don Sextro, Dan Comstock

Fundamentals of Natural Gas Liquid Measurement The measurement of natural gas liquids (NGL) is similar in many respects to that of other hydrocarbon liquids but is markedly different in other aspects. The main difference in NGL measurement is the need to properly address the effects of solution mixing. Measuring NGL by mass measurement techniques will properly address solution mixing effects because…

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February 15, 2015

  • AUTHOR: Dominic Giametta

Fundamentals of NGL Sampling Systems The purpose of this paper is to discuss in depth the systems we use as a standard to sample natural gas liquids, or NGL’s. Before we discuss the systems and methods used to sample these products, we must first clearly define what NGL’s are. NGL’s can be a combination of any fluid in liquid form…

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February 15, 2015

  • AUTHOR: Greg Williams

Fundamentals of Meter Provers and Proving Methods This paper will verify the history, requirements and operation of all Provers accepted for liquid pipeline meter uncertainty verification in the Liquid Oil/Gas Industry. It will continue with an explanation and the industries wide acceptance of the Uni-directional Captive Displacement Prover (UDCDP). This document will supply the reader with information regarding meter types and the…

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February 15, 2015

  • AUTHOR: Marsha Yon

Fundamentals of Mass Measurement ( Coriolis Meters) The first flow meter utilizing the Coriolis force to measure mass flow was patented in 1978. Today, hundreds of thousands of Coriolis meters are in service in the hydrocarbon industry to measure mass, volume, and density of a wide variety of fluids. The American Petroleum Institute published Chapter 5.6 entitled “Measurement of Liquid Hydrocarbons by…

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February 15, 2015

  • AUTHOR: Tony Petitto

FUNDAMENTALS OF VOLUME MEASUREMENT (TURBINE METERS) Turbine meters have been used for the custody transfer of refined petroleum products and light crude oils for over 40 years. When correctly applied, they offer high accuracy and long service life over a wide range of products and operating conditions. Traditionally, turbine metes were used for the measurement of low viscosity liquids and PD…

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February 12, 2015

  • AUTHOR: Robert Bennett

FUNDAMENTAL PRINCIPLES OF GAS TURBINE METERS Gas measurement in the U.S. and around the world is dominated by diaphragm, rotary, turbine, and orifice meters. Each serves a different segment of the gas industry and each has its own set of advantages and disadvantages. These four main types of meters can be broken into two distinct categories: positive displacement, and inferential. Diaphragm…

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February 12, 2015

  • AUTHOR: Cristina Alfonso

FUNDAMENTAL PRINCIPLES OF ROTARY DISPLACEMENT METERS Natural gas measurement today is accomplished through the use of two different classifications of gas meters. The first consists of inferential type meters, including, orifice, ultra-sonic and turbine meters, and the second is the positive displacement meters, which consist of diaphragm and rotary displacement meters. The inferential type meters are so-called because rather than measuring…

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February 12, 2015

  • AUTHOR: Robert Bennett

Fundamental Principles of Diaphragm Displacement Meters The first gas company in the U.S., The Gas Light Company of Baltimore, Maryland, founded in 1816, struggled for years with financial and technical problems while operating on a “flat rate” basis. Its growth was slow with the charge for gas service beyond the pocketbook of the majority. By comparison, the New York Gas Light…

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February 11, 2015

  • AUTHOR: Gary Beckett

Fundamentals of Pressure Relief Valves What Are They and Why Are They Needed What: A stand-alone device that opens and re-closes at a pre-selected pressure, containing an orifice sized to flow a required capacity to prevent / avoid overpressure. Why: All natural gas equipment (pipelines, pressure vessels, air-cooled heat exchangers, compressor cylinders, odorant tanks, instrument control lines, valves, underground storage,…

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ASGMT is dedicated to training, education, and creating a better future through the people who learn from us. As the largest gas measurement school in the United States, we are devoted to natural gas measurement, pressure regulation, flow control, and other measurement related arenas.

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