Air Monitoring UK Focus Gas Measurements from ATEX Installations
Gas sampling and conditioning in hazardous areas can be extremely challenging for operators and providers of analytical measurement systems. In order to provide reliable and auditable systems there needs to be consideration not only of the process parameters and local environmental conditions but also of the hazardous area rating in which the equipment must be certified to in order to operate continuously. This includes the area rating for the process gas itself as well as the rating for the installation location.
M&C TechGroup offers a range of precertified components for all hazardous area zones and can take the uncertainty of hat to provide away from the
operator and the system provider. Connection to a process can be achieved with a range of certified sample probes - both sampling and mounting can be achieved from and in zones 0, 1, 2, 20, 21, 22. Transport and conditioning of sample gas can be provided through regulated, or self-regulated, heated sample lines and gas coolers, certified for specific zones. Further downstream gas conditioning and also full System Integration can be offered by M&C.
Reader Reply Card no 169
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History Channel Appearance for Quantitech Expert
A revolutionary gas analyser from leading environmental instrumentation company Quantitech (UK) appeared in an episode of a major new History Channel series this week. The Gasmet DX-4030 gas analyser, along with the company’s Dr Andrew Hobson, appeared in an instalment of the popular History Channel documentary series Ancient Discoveries that aired on Wednesday (28th April) evening. The Milton Keynes based company was originally contacted by producers Wild Dream Films last year who were looking for instrumentation to measure toxic gases in air. Gas analysis on emissions from smouldering materials was featured in an episode that recreated the Roman siege of Ambracia in 189BC.
Efficient Emissions Monitoring of Combustion Processes
Increasing fuel costs and the drive for optimum efficiency are spotlighting the increasing need for monitoring combustion processes by means of emission measurements. Measurement technology specialist Testo (UK) has now introduced a 4-gas instrument, which will make accurate emissions measurements quicker and easier in the future. The Testo 340 is a handheld emissions analyser, enabling efficiency and pollution measurements to be taken, for example on burners or engine generator sets.
The Testo 340 emissions analyser incorporates measuring range extension, used on the existing MCERTS accredited Testo 350 and also the Testo 335 analysers. This allows the user to carry out unrestricted measurements even at high gas concentrations.
The Testo 340 is fitted with an O2 measuring cell as standard. Three further gas sensors (e. g. CO, COlow, NO,
NOlow, NO2 or SO2) can be individually configured at any time, providing the optimum configuration for the respective measurement task. Sensors can be exchanged directly by the user in the field, minimising
service times. The instrument’s integrated protective rubber housing shields the instrument from impact in demanding environments.
According to Wild Dream Films: “In Roman times there was a siege technique called sapping which involved the excavation of tunnels under fortresses walls in an attempt to destroy them. A method to prevent this was blowing toxic smoke from smouldering chicken feathers and charcoal into the tunnels. The Gasmet DX- 4030 from Quantitech allowed us to measure the toxic gases this produced.
“By using the DX-4030 we found that the concentration of toxic gases was extremely high and potentially poisonous. The analyser was very easy to use and enabled us to shed new light on these siege prevention techniques.”
The DX-4030 is a new analyser based on tried and tested Gasmet technology providing both field-usability and high levels of analytical performance. The DX-4030 employs FTIR (Fourier Transform InfraRed Spectroscopy) analysis producing almost instantaneous readings for multiple compounds across a wide measurement range that extends to sub-ppm levels. It is more commonly used for the analysis of workplace and process gases in applications as diverse as contaminated land, industrial hygiene and chemical spill response. For example, a number of the units were recently acquired by the Environment Agency for deployment in a multi-agency air quality cell that has been created to respond to major incidents affecting air quality.
Reader Reply Card no 168 Reader Reply Card no 185 Syngas Analysis
Syngas (synthetic gas) is a mixture of hydrogen and carbon monoxide usually formed by gasification and used as a fuel or intermediate in production of ammonia or ethanol. The gasification process can use a wide variety of organic waste as substrate. Therefore these projects are high on the agenda of many waste-to-energy companies.
Hitech Instruments, the UK gas analyser specialists, are experts in hydrogen analysis using katharometers (thermal conductivity sensors). The K1550R hydrogen analyser is available to measure hydrogen in a background of nitrogen and carbon monoxide as a standard product. However, with syngas usually containing a significant percentage of carbon dioxide a compensation input can be
provided for this. The IR600 carbon dioxide analyser from Hitech can provide this input. Thus Hitech provide a solution for all the gases of interest in this application.
The K1550 hydrogen analysers are available in different configurations providing solutions for hazardous area applications. The simplest solution is to mount the remote sensor in the hazardous and connect to the electronics unit via an MTL barrier. Alternatively the electronics can be mounted in an Ex enclosure for full hazardous area use. Hitech Instruments is part of the MTL Instruments Group, a world leader in intrinsic safety and a part of Cooper Crouse-Hinds.
A bypass flow sample system is also available for fast response when the sensor needs to be remote from the process. Hitech manufacture a number of sample systems both as standard items and bespoke products for specific applications.
Reader Reply Card no 170
Cleaner emissions for the future? Absolutely.
Continuous Emissions Monitoring
- High performance analyser systems for all your emissions monitoring requirements
- MCERTS approved
www.abb.com/analytical
ABB Tel: 01952 670477 Fax: 01952 603065
analyticalenquiry@gb.abb.com
Reader Reply Card no 171
May/June 2010
IET
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