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July 8, 2021
ZEGAZ Got wet gas?

The measurement of hydrocarbon and water dewpoint are both important custody transfer specifications for natural gas transmission. The ZEGAZ Dewpoint analyzers can measure water dewpoint, hydrocarbon dewpoint, or both. These measurements are true dewpoint measurements and are not based on equation of state calculations. ZEGAZ Instruments products are the only analyzers in the world using […]

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July 8, 2015
Improving the speed and accuracy of water vapor and hydrogen sulfide measurements by optimizing the sample transport system.

- John Kozich Keywords Sample Systems, Sample Transport, Adsorption, Desorption Abstract Many different analytical techniques have made the transition from the laboratory to online process monitoring. UV Natural gas is processed in order to meet customer specifications, such that it may be sold based on energy content. Suppliers and producers whose product does meet the […]

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April 4, 2014
IN-SITU, Real-Time Analysis of Liquid and Gas Hydrocarbon Streams Using a Broadly Tunable Spectrometer

- Paul Little - Jie Zhu Keywords Laser, Spectrometer, Near Infrared, On-Line, In-Situ, Hydrocarbon Analysis Abstract Near-infrared (NIR) spectroscopy is a powerful tool for process measurement of chemical composition and estimation of the physical properties of materials. Various spectroscopic designs have been employed, including both dispersive and interferometric devices. Recently, a novel analyzer using a […]

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November 3, 2012
Mass Transport in Sample Transport Lines Adsorption Desorption Effects and Their Influence on Process Analytical Measurements

- Mike Pelligrini Keywords Mass Transport, Sample Lines, Electropolished, SilcoNertâ„¢, adsorption, desorption, water, moisture, hydrogen sulfide Abstract Many different analytical techniques have made the transition from the laboratory to online process monitoring. UV pThe majority of low-level concentration measurements, whether for process control, product quality monitoring, or emissions monitoring, are based on extractive analysis of […]

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November 3, 2011
Direct Extractive Measurement of PPM Levels of Sulfur Dioxide by Ultraviolet Absorption Spectroscopy

PRESENTED AT: ISA AD 2011 Analysis Division Symposium League City, TX Keywords Sulfur Dioxide, Direct Extractive, Emissions Monitoring, CEMS, Ultraviolet Abstract Sulfur Dioxide is classed by the Environmental Protection Agency (EPA) and all state environmental authorities as a priority pollutant and is commonly present in stack gas emissions from a multitude of sources including refining, […]

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January 1, 2010
Combining Spectroscopy and Separation Science in Process and Emissions Monitoring

- Kevin Harris M.Sc. - Dan Potter B. Admin PRESENTED AT: ISA AD 2010 Analysis Division Symposium KEYWORDS NDUV, H2S Measurement, Frontal Elution Chromatography, Auto-carrier, online analysis, emissions monitoring, AFEC, AFECUV, Process UV Spectrometer. ABSTRACT Ultraviolet (UV) absorption spectroscopy provides rapid real-time analysis of many species of interest to industrial monitoring. In some applications, the […]

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