sampling system Articles
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Automated Consignment Sampling Systems
Introduction The following is a case study where consignment sampling has been implemented at a UK coal fired power station. Bias-Free Sampling The production of consistent and repeatable ‘bias-free’ samples is not possible but all international sampling standards give precise limits within which systems can be considered as being ‘free’ from bias. A sampling system that ...
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Use of Diaphragm pumps in Sampling systems
INTRODUCTION Sample system design can take many forms, influenced by factors including cost, size, maintenance, source conditions, and analyzer requirements – to mention a few. The following discussion takes into account the operating characteristics of a diaphragm pump, and choices that will improve system performance, reduce measurement errors, and lower pump maintenance. Illustrated below ...
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Custom Engineering and Design Capability
ANSI N13.1-2011 stack sampling location qualification testing ANSI N13.1 stack sampling system design Custom air sampler design Integration of radiation detectors and air sampling systems ANSI N13.1-2011 Design Considerations ANSI N13.1-2011 requires that sampling systems satisfy the following design criteria; (1) representative particles from the stack flow must be drawn into the ...
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Continuous monitoring of the performance of a NOx reduction system using electrochemical sensors
Abstract The efficiency of a NOx removal system is continuously measured using a TüVapproved analyser coupled to a high-temperature sampling system. Both NO and NO2 are measured directly using electrochemical sensors without the need to convert NO2 to NO. It is important to measure both components separately since the ratio of NO to NO2 in stack gas is much smaller after NOx removal. The ...
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Partial Flow Sampling System For Transient Engine Testing
For on-highway engine manufacturers, meeting model year 2007 emissions levels represents a major measurement challenge. However, future off-road engine emissions testing requirements are anticipated to include not only lower steady-state emissions levels, but also the possibility of using transient cycle data. As a result, engine manufacturers are seeking more cost-effective methods of ...
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Technical Bulletin: Multilevel Sampling
The topic of this CL:AIRE Technical Bulletin is multilevel sampling systems for characterising contaminated groundwater. Contaminated groundwater can present considerable problems for landowners: it can occur at significant depth, sources of the contamination are not often obvious, it can migrate from one property to another, and groundwater flow directions can be altered due to seasonal ...
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Sample System Best Practices for Water and Hydrocarbon DP Applications
Abstract Sampling techniques for BTU and moisture measurements are well understood but applications beyond the routine requires additional attention to detail. Two such applications are the subject of this paper. The first is the measurement of low level moisture (1 – 1,000 ppbv) for cryogenic processes. Measuring moisture below 1 ppm is an entirely different world from the traditional ...
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ANSI N13.1-2011 Stack Sampling Considerations
Background Nuclear facilities are required to follow industry standards for sampling stack effluents. Exposure of the general public to released radionuclides must be monitored as specified in US governmental regulations. The United States Environmental Protection Agency (USEPA) and the United States Nuclear Regulatory Commission (USNRC) have the authority over the monitoring of these releases. ...
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Switching to In-Situ Analysis
In the May 2018 issue of Hydrocarbon Engineering, NEO Monitors considered refineries as “A smorgasbord of measurements.”1 The article highlighted tunable diode laser absorption spectroscopy (TDLAS) technology’s ability to perform contactless real time gas concentration measurements directly into the process. In situ measurements provide several advantages compared to extractive ...
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Particle Detection in Liquids with High Viscosity or High Molecular Weights
Abstract High viscosity and high molecular weight liquids can scatter laser light, due to the molecules that comprise the chemical. This can interfere with light scattered off particles when using a laser optical particle counter, creating false-positive counts. A method is described to measure high viscosity or high molecular weight liquids using a syringe sampling system and LiQuilaz particle ...
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GT90 Dioxin+ Enabling Reliable Dioxin Monitoring for Eco-Research
In this article, our client and environmental research expert, Dr. Werner Tirler, also the Director of Eco-Research tells about their experiences of using Gasmet’s dioxin monitoring system, GT90 Dioxin+. According to him, it is a very robust and durable device, which enables reliable sampling of dioxins for his laboratory. Eco-Research Is A Specialist in Environmental Pollutant Detection ...
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A Comparative Analysis of Fuel Oxygenates in Soil by Dynamic and Static Headspace Utilizing the HT3 Automatic Headspace Analyzer
Abstract This application note presents method development using classical headspace sample preparative techniques for the analysis of fuel oxygenates in a soil matrix. Fuel oxygenate compounds were analyzed using the HT3TM Automated Headspace Analyzer in conjunction with a Gas Chromatograph/Mass Spectrometer (GC/MS) system. Normal method validation including calibration, detection limit ...
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Continuous Emissions Monitoring Systems for Industry
Across the globe, environmental regulatory authorities require manufacturing industries to monitor their pollutant emission rates. The most common means of measuring emissions is with continuous emissions monitoring systems, which are a packaged system of gas analyzers, gas sampling system, temperature, and flow and opacity monitors which are then integrated in with a system for data acquisition. ...
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Volatile Organic Compounds in Every Day Food
Abstract Volatile Organic Compounds (VOCs) have been analyzed in drinking water and pharmaceuticals extensively in recent years. Now, VOCs in food products have became a major interest among researchers. Utilizing an Atomx automated VOC sample prep system in conjunction with a gas chromatograph-mass spectrometer (GC/MS) will allow for the determination of VOCs in food products. The automated ...
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Did you know ? Monitoring and analysis of contaminants in liquids
The airmoVOC WMS is a unique and efficient product for monitoring and analysis in liquids. This Mcerts certified solution measures and analyzes VOCs and BTEX (Benzene, Toluene, Ethylbenzene and Xylene) dissolved in liquid matrices. Chromatotec presents a headspace sampling system (following US EPA method 502-2) designed to extract representative samples from a liquid phase. The vaporized sample ...
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Long-term sampling - A method for continuous emission monitoring of dioxins/furans and mercury
Introduction The continuous emission monitoring of the different compounds which are emitted by industrial facilities is an important topic to approve the compliance to different regulations like WID. However, there are several compounds which cannot be measured in real time. Specific dioxins/furans (PCCD/PCDF) and other POPs (Persistent Organic Pollutants) cannot be measured by online monitors. ...
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Increased sample throughput for ICP-OES applied to U.S. EPA method 200.7
The application of an SC-FAST sample introduction system to the analysis of natural and certified water samples is described. The SC-FAST system consists of an autosampler, sample loop, switching valve, high efficiency nebulizer and a glass cyclonic spray chamber to perform analysis by direct nebulization. The potential benefits of this introduction system are numerous and include: increased ...
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Importance of long-term sampling in dioxin monitoring
Dioxins and POPs are toxic, persistent, and nowadays ubiquitously present in our environment. Gasmet GT90 Dioxin+ is an exceptionally robust dioxin sampling system that was designed to sample even the lowest concentrations in harsh industrial environments and even subfreezing conditions. Dioxin is an umbrella name for polychlorinated dibenzo-para-dioxins and polychlorinated dibenzofurans. They ...
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Analytik Jena AG: State of the Art - Fully Automated and Matrix-Optimized Gas Analysis with multi EA 5000
The analysis of gaseous matrices is still a real challenge. No matrix type is as versatile in its behavior and the requirements for sample feed and combustion process. This makes it difficult to gain quick, precise, and reliable results. Thanks to the outstanding flexibility of the application-optimized gas sampling systems, the elemental analyzer multi EA 5000 can analyze liquefied gases (LPG), ...
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Air Sampling During NPP Accident
There has been considerable interest recently generated regarding emergency air sampling protocols as a result of the Fukushima accident in Japan. A major concern involving air sampling requirements is the accurate determination of gaseous-radioactive iodine species emitted from the NPP to the environment as a result of an accident. During normal NPP operation gaseous radioactive iodine ...
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