Papers

A diaphragm meter is a positive displacement instrument which is used to measure the volume of gas that passes through it. This is accomplished through the known volume that is displaced for each stroke of the diaphragm. The diaphragm also provides the seal between the measuring chambers of the device. As such the diaphragm meter …

FUNDAMENTALS AND PRINCIPLES OF DIAPHRAGM METERS Read More »

Rotary gas meters have been in use for over sixty years in the natural gas distribution industry. Over the years, the construction has switched from heavy cast iron bodies to lighter, high strength aluminum. Advances in manufacturing techniques such as CNC machining centers have enhanced the measurement performance of the rotary meter

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

This paper presents methods for determining the uncertainty of both differential and positive metering stations. It takes into account the type of meter, number of meters in parallel, type of secondary instruments, and the determination of physical properties. The paper then relates this information to potential influence on system balance

The use of orifices for commercial flow measurement has a long history dating back more than 50 years. Orifices are extensively used in the United States natural gas, petroleum and petro-chemical industries and are important as one of the most practical ways to meter large volumes of gas flow. These meters are very reliable and …

PULSATION EFFECTS ON ORIFICE METERING CONSIDERING PRIMARY AND SECONDARY ELEMENTS Read More »

Because of the adverse effects of pulsations on orifice and other types of flow meters there is for many installations, a need to eliminate or decrease the amplitude of pulsations in the piping. This task has been the primary domain of acoustical piping designers who have had both theoretical and practical field experience in such …

PULSATION REDUCTION BY ACOUSTIC FILTERS FOR METERING APPLICATIONS Read More »

Since the discovery of oil and gas and the advent of commercial conveniences, which use oil and gas, companies have been confronted with the need to accurately measure the oil and gas bought and sold in the marketplace. And, as usual, the technology available at the time was brought to bear on the measurement process

The fast pace changes in technology continue to keep us is a state of flux. There isn’t any one who isn’t impacted by the continuous growth and changes in the world of technology. In today’s world, we accept computers and the functions they perform without question. In fact, we place our hard-earned dollars and in …

ECONOMICS OF ELECTRONIC GAS MEASUREMENT 2004 Read More »

Electronic calibrators are fast becoming the benchmark for measurement and are replacing mechanical types of instruments for testing and calibration checks. Techniques, usage, traceability requirements, and problems are changing quickly as technology advances in the development of these instruments. Information concerning these issues is often outdated by the time the technician receives it

Gas measurement has evolved over the last few decades from simple paper chart recorders to sophisticated electronic flow computers. That evolution came about because of technology advances that allow systems to do much more with less power. That power requirement is dictated by the nature of gas exploration and production. Inevitably, natural gas will be …

LOW POWER FLOW COMPUTERS Read More »