8 Gas Detection CoGDEM Comment – Gas Detection Standards


CoGDEM (UK) is the Council of Gas Detection and Environmental Monitoring, a trade association with a membership of over fi fty companies involved in the gas detection industry. We are pleased to have ILM/ETP (the publishers of this IET magazine) as an Associate Member, so we now place a regular column of news from the gas detection industry in IET magazine.


One of the key reasons for manufacturers of gas detection equipment to join a trade association such as CoGDEM is to be involved in the creation and modifi cation process for the range of international standards that apply to the gas detection industry. For example, if a manufacturer of a fl ammable gas detector wanted to suggest an amendment to an existing standard that governs the performance of fl ammable gas detectors, that company cannot join the committee or working group for that standard in case there might be a confl ict of interest. However, if the company is a member of a trade association such as CoGDEM, they can have their experts attend Working Group meetings or be committee members to represent the industry as a whole, not just their own company.


This representation is not just through the UK gas detection committee EXL/31/1 (with BSI providing the Secretariat), but globally. Currently very active, the two European (CENELEC) gas detection committees TC 216 and SC 31/9 both have strong CoGDEM representation. TC 216 predominantly deals with gas detectors used in the domestic area, such as carbon monoxide and natural gas alarms and combustion gas analysers used by heating engineers. In contrast, the scope of SC 31/9 is gas detectors used in the workplace, either for the protection of the workers or the plant.


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If you are a Distributor with a proven track record in selling gas detection products, and you would like to enhance your product portfolio, please get in touch. Full training, support and marketing assistance is available.


Churston House, Bascombe Road, Churston Ferrers, Devon, TQ5 0JJ, United Kingdom.


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As an example of the important standards which are being worked on by these CENELEC committees, EN 45544 governs the performance requirements and test methods for toxic gas detectors, and a completely rewritten version will be published in the coming months. Work will soon begin on an equivalent global standard, and the European experts will be actively ensuring that manufacturers and test laboratories fi nd similar requirements no matter where in the world toxic gas detectors are being designed and tested.


At CoGDEM meetings, member companies discuss the current landscape of standards and whether there are any gaps in coverage. As technology advances, standards need to evolve to take into account new techniques or improved gas detection performance. Recently, CoGDEM members have started a discussion on the possible benefi ts of creating a new standard to cover the usage of ultrasonic-based detectors. These are used near high pressure gas pipelines so that leaks can immediately be ‘heard’ before the gas concentration builds up to a point where conventional gas detectors would be effective. CoGDEM can use its position within the various committees mentioned above to raise the suggestion to the standards-writing bodies.


CoGDEM member companies have also been invited to participate in the recently announced consultation on changes to the guidance issued by the UK’s HSE to sit alongside the Confi ned Space Regulations. The guidance makes many mentions of the need to test the atmosphere using gas detectors.


Accurate Calibration Gas Mixtures from Hand-Held Gas Generators


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GENie calibration system, available from Spantech (UK), is ACD’s most versatile and accurate calibration system. Parts per million (ppm) and sub-ppm levels of calibration gases are generated at the point of use. The list includes Chlorine, Chlorine Dioxide, Hydrogen, Hydrogen Sulphide, Hydrogen Cyanide, Ozone, Ammonia, Toluene and Hexane. Any base unit can be paired with different source modules to generate the desired ppm level in Air as a calibration standard. Internal mass fl ow sensors accurately calibrate at any temperature or altitude. The sources for Ammonia, Toluene and Hexane provide 96 hours of calibration gas.


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Sensor Division Pyroelectric detectors


Made in Dresden – Germany


The GENie O3 is small, lightweight, portable generator used for fi xed points and hand-held detectors. The user adjustable concentration levels has LCD setting between 0.2 and 1.0 PPM which will calibrate most Ozone gas sensors. The internal mass fl ow sensor and ultraviolet light source provide accurate levels of Ozone gas with an expected life of up to 500 hours of use. The GENie O3 comes with a NIST certifi cate of calibration to +/- 10 %, providing exceptional accuracy as well as high precision.


Standard and customised detectors  NDIR gas analysers  Flame detectors  Radiometers  Spectrometers


Multi color detectors with integrated beamsplitter  Only ø 2.5 mm aperture for 2 or 4 channels


 Miniaturized gas cell for small gas volume usable


 Long term stable signal ratio for all channels


 Available with JFET or OpAmp


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InfraTec Infrared Ltd. Chesterfi eld – UK


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Phone: +44 1246 267562 Fax: +44 1246 267561


E-Mail: sensor@InfraTec.co.uk Internet www.InfraTec.co.uk


The GENie QC-1 Ammonia utilises a sealed glass ampoule which is broken to produce up to 8 hours of Ammonia gas. A 12 pack of these vials is provided with the instrument gives up to 96 hours of calibration gas. Replacement vials are economical, making the GENie QC-1 a perfect tool for calibrating fi xed or portable Ammonia sensors. With user adjustable outputs, the instrument can be set from 10 to 150 PPM. This compact and rugged instrument is built for use in the harshest environments, and is supplied in a strong nylon carrying case. Its ergonomic design and easy to read LCD display lends itself to portability and ease of use in a safe environment.


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IET September / October 2014 www.envirotech-online.com Euro Gas Distributors .indd 1


30/07/2014 10:09


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