Air Monitoring Dioxin Emission Continuous Sampler
The increasing awareness of the dangers of compounds like dioxin, furans and POP’s for human health generated a compelling need for a better understanding of dioxin stack emissions. Therefore, based on such requirements, TCR Tecora (Italy), leading manufacturer of stack testing instruments and environmental monitoring samplers since 1974, designed and produced DECS, a Dioxin Emission Continuous Sampler, which is a fixed system for stack emission for determination of dioxins and furans on long term. The system is permanently installed on stack for continuous sampling from 8 hours up to 30 days. According to EN 1948 and USEPA 23, DECS adopts the filter condenser method with adsorbing trap on wet gas. DECS consists of 2 units: the sampling unit and the control unit.
The sampling unit is the part to be mounted on the stack’s sampling point and its aim is the collection of the sample in its two phases (particulate and gas) without modifying its composition. The control unit is the user’s interface that controls all system’s functions; it is usually located in a safe and easily accessible area. Built in an industrial cabinet, it’s connected to the sampling unit through pneumatic and electrical connections. DECS manage the sampling fully in automatic, without man supervision.
Available interfaces are a 10” LCD graphic monitor, a keyboard, a compact flash and a Internet/Ethernet connection. Once the measurement is terminated, a summary report is produced, in order to calculate the concentration and evaluation of the measurement quality; a continuous record of the main parameters and anomalous situations it is also available. Extensive data log are available downloading with a USB key compact flash.
Reader Reply Card no 120 Less Hot Air About Cow Emissions
Influential new figures from the United Nations’ Food and Agriculture Organisation at last show a more accurate picture of greenhouse gas emissions from dairy products.
Scientists at the FAO found that dairy is responsible for only 2.7% of global man-made emissions. By comparison, aviation in the UK accounts for some 7% of national emissions.
The report’s findings mean that dairy cows are not the environmental villains that some have claimed, backing up another recent study that found the cows themselves are responsible directly for just 1.2% of UK emissions (A Sustainable Dairy Sector, CE Delft, October 2008).
Dairy UK Director General Jim Begg welcomed the new study. He said: “This high level report from the FAO has been two years in the making and at last sheds light on the true impact of dairy farming on the environment.
“In producing some of the nation’s most popular and nutritious foods, dairy cows, milk tankers and dairies emit less than 2.7% of the world’s greenhouse gases. Of course, we’re still working to lower that figure, but the report shows that the industry’s critics are the ones really producing hot air.
“The FAO has confirmed that northern Europe is one of the most efficient regions in the world to produce milk. And thanks to initiatives such as the UK’s Milk Roadmap, the dairy industry is constantly improving its record by cutting energy use, further reducing cow emissions, using more recycled plastic in milk bottles and preserving valuable water supplies.
“So consumers should carry on enjoying the British milk, cheese, yogurt and other dairy products that they love.”
Reader Reply Card no 121
New High Volume Dust Sampler with Touch-Screen
Digitel (Switzerland) proudly announce the release of their High Volume Dust Sampler DHA-80 with touch- screen and USB port as a standard. 40 years of experience in building High Volume Samplers and more than 1500 installed units demonstrate quality and functionality of Digitel’s instruments. Constant development and improvement have lead to a high level performance.
The DHA-80 is well proven and ruggedly built. All parts which are in contact with the measured air are finished with Ematal, a special corrosion resistant coating. A quartz time base controls the fully automatic filter change. remote control is possible. Filters can be fitted and removed during normal operation of the instrument. Analogue, RS-232C, Ethernet, USB ports are standard. The flow meter is pressure and temperature compensated. High constancy of the air sampled flow rate guaranteed by controlling of the suction unit capacity via floater flow rate measuring unit with photo sensor. The blower is a carbon-free brushless rotary current, fast frequency motor.
The instrument comes in a compact, weatherproof aluminium field housing (IP 54). Flow rate adjustable: 440 - 600 liter/min or 100-1000l/min. Filter diameter: 150 mm (140 mm disposable surface; cellulose, quartz or glass fibre filter). Cartridges for PUF foams, cooling of the filter storage and interior heating are just some of many options that are available to meet all of the customer’s needs. The PM10 sampling of the DHA-80 meets the directives VDI 2463 page 11 and EN 12341.
Reader Reply Card no 122 Reader Reply Card no 123
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For immediate information on products featured in this issue Please email us today!
info@iet-pub.com New Coal Fire Detection System
CODEL International (UK) has recently introduced a new Coal Fire Detection System into the marketplace. The early detection of coal fires in coal handling systems on coal fired power stations is essential to prevent catastrophic damage to expensive plant and serious injury to personnel. The most reliable and accurate method of detecting coal fires or smouldering is to monitor the carbon monoxide levels within coal handling plant areas such as silos and mills and detect rapid increases in concentration of the gas.
The CODEL Coal Fire Detection System is designed for use on:- Coal silos, Coal mills, Coal bunkers, Grinding plants; Coal bag houses and Coal conveyors.
The system features a rugged, infra-red cross- correlation analyser capable of measuring rapid changes in CO concentration accurately with the minimum of maintenance required. The analyser can be re-calibrated automatically using integral valves to ensure ongoing drift free performance.
The CODEL CO monitor samples the gas content of the critical area through a non-intrusive steel sintered filter mounted in the wall of the
mill outlet duct or hopper. This removes the need for intrusive sampling probes which are prone to wear and are expensive to replace. Furthermore, the filter is back flushed with compressed air at regular intervals to ensure an uninterrupted flow of sample gas and to minimise maintenance.
Extensive field trials of the Coal Fire Detection System in the UK, Poland and China have shown this new monitor to be extremely reliable, accurate and to require minimal maintenance. Reader Reply Card no 124
May/June 2010
IET
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