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20 Gas Detection


For immediate information on products featured in this issue Please email us today!


info@iet-pub.com New Intelligent NDIR Sensor for CO2 or HC Detection


IRNET is the base of the new family of infrared sensors developed by N.E.T. (Italy). Using a patented optical cavity combined with latest NDIR technology the result is a high performing, robust sensor for Hydrocarbon and Carbon Dioxide monitoring with an estimated lifetime of over 5 years. The wide operating temperature (-40 °C to 50 °C) and low power consumption makes it suitable for fixed gas detection instruments. It is designed to fit most instrument makers in the standard 20mm and 32mm diameter sizes.


IRNET is available in two versions: the "dummy" 7 pins version, IRNET-7, that provides a "raw" signal (active - reference) and an internal temperature signal or the “intelligent” version, IRNET-P, with incorporated signal linearization and temperature compensation, suited for manufacturers without any specialist knowledge in IR technology. The IRNET- P sensor contains all the necessary optics and integrated electronics that you need in order to provide a user-friendly analogue (voltage or dynamic pellistor) standard output.


Both IRNET-7 and IRNET-P are available for hydrocarbon detection, including


methane, in % LEL and % volume and for CO2 with detection level in ppm, low % volume and high % vol.


Reader Reply Card no 63 New Sensor for Hydrogen Cyanide


Membrapor (Switzerland) has successfully developed a sensor for Hydrogen Cyanide (HCN). The HCN/C-100 exhibits an exceptionally short response time of t90


The cross-sensitivity of the HCN/C-100 to carbon monoxide and to hydrogen is only 2% and the sensor life expectancy is 2 years. Since our last participation at the Sensor+Test exhibition, the product range of Membrapor was expanded by another 34 sensors. Membrapor also provides customer-specific solutions.


Reader Reply Card no 64 With the exclusive Inspectra® Laser spectro-


scopy detector from Gazomat™ (France) and optional GPS and Mapping system, the Inspectra®


VSR offers unique performances:


• Total selectivity to methane – no incorrect measurement can occur due to the presence of hydrocarbons, exhaust gases or other pollutants.


• 1 ppm sensitivity with the High-Tech laser diode and multipass cell of the Gazomat™ Laser system.


• Survey speed up to 50 km/h or 30 mph for a significant increase in productivity.


• The shortest response time in the market with approx. 1.5 second.


The technology represents also a major breakthrough in relation to safety. It eliminates the need for hydrogen on board, thus sup- planting Flame Ionisation detection.


The Inspectra® software developed


by Gazomat™ is an incredibly user-friendly interface.


• Monitoring of instrumentation is fully automated – calibration, gas line tests..


• The system integrates a whole set of both audio and visual alarms.


• The system is operated from an on-board laptop PC. Methane concentrations are displayed on screen and recorded in the system's database along with the vehicle's speed and eventual comments of the operator.


Finally, the combination of the Inspectra® and the optional GPS and mapping system is the “Nec plus ultra” for gas network survey.


• The GPS receiver offers unique GPS coverage. It gives the longitude and latitude position of the vehicle along with the gas leak detected.


• The information collected can be fed into a map processing system (SIG). By downloading digital maps in the Inspectra®


the vehicle’s position on the map displayed on screen.


• The combination of survey data and digital maps meet the traceability requirement of an increasing number of gas distribution companies.


With the Inspectra® vehicle and its various


options, gas operators now have a highly reliable tool for optimum survey of their low and medium pressure networks.


Reader Reply Card no 66 Reader Reply Card no 65


Network Survey Vehicle with Laser Spectroscopy Technology


System, the operator visualises


IET


Annual Buyers Guide 2009


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