48 Gas Detection


ATEX and IECEx NDIR Certifi ed Gas Sensor Heads including NDIR Sensors


N.E.T. (Italy) is offering full conformity Ex certifi ed heads containing the complete range of N.E.T. NDIR sensors. Two dimensions of heads are available; one small disposable head for 20 mm size sensors and one larger decomposable head, fi tted with a 32 mm sensor that can be substituted if needed. The stainless fl ameproof heads are available with “Genius”, IRNET, IRPELL, IREF sensors. All sensors are SIL2 (TUV approved). Intrinsically safe barrier is available on request.


IRAD detector head is available for hydrocarbon detection in % LEL or % volume, for CO2 with detection level in ppm, low % volume and high % volume and for refrigerants in ppm range. Standard output is in voltage and RS485, 4-20mA is also available. 30847pr@reply-direct.com


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The Next Generation in Flammable Sensing


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Ex ‘d’ Certifi ed Sensor Housing Accomodates a Range of Sensor Types and Sizes


The GSH4 Ex ‘d’ certifi ed stainless steel sensor housings from Dynament (UK) will accomodate a range of sensor types and sizes. Although primarily designed for use by Original Equipment Manufacturers (OEM’s) to house the Dynament range of industry standard Infrared Gas Sensors, they can also accomodate electrochemical, pellistor and PID sensors in both 20mm x 16mm (nominal) and 32mm x 16mm (nominal) sizes. The housings have tamperproof protection but can be opened using a key to gain access to the plug-in sensor thereby simplifying maintenance. A sinter type fl ame arrestor within the cover is used to allow diffusion of the gas into the housing.


The SGX MPEL provides;


Low power High resistance to poisons Mechanical robustness


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For more information, visit www.sgxsensortech.com or email sales.is@sgxsensortech.com


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A range of accessories is available including various gas sampling adaptors and a stainless steel rain guard to protect the sensor in wet environments or areas subjected to hosing down. The rain guard is fi tted with a gas sampling facility for easy calibration.


The housings have both ATEX and IECEx component certifi cation Ex d IIC T4 Gb for use within an ambient temperature range of -20 to +60 degrees C.


They can be used with separately certifi ed, industry standard junction boxes or OEM gas detector enclosures and are supplied with thread sizes of either M20, M25, 1/2” NPT-14 or 3/4” NPT-14 to allow them to be screwed into and terminated within a suitable seperately certifi ed housing.


They are for use with separately certifi ed, industry standard junction boxes or OEM gas detector enclosures. 30974pr@reply-direct.com


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2615ad@reply-direct.com IET Annual Buyers’ Guide 2014/15 www.envirotech-online.com


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