18 Gas Detection The First Intrinsically Safe NDIR Gas Sensor
Incorporating innovative patent-pending optics, the new IR sensor series from N.E.T. (Italy) comprises a standard sensor, IRIS-7, including optics and intrinsically safe (IS) circuitry with a 7 pin output, and IRIS-P, an intelligent sensor containing all the necessary integrated electronics, IS interface and software to provide user friendly analogue voltage outputs.
Designed especially for the fixed apparatus, the standard 32 mm size (typical 7-series) with a patent cavity allows to meet the 60079-29-1 Standard in terms of performance. The IRIS-P hardware has been developed to comply with SIL specifications up to level 2 and SIL 3 for the
software. Both the sensors IRIS-7 and IRIS-P are available for hydrocarbons, including methane, in % LEL and % vol and for CO2 with detection level in ppm, low % vol and high % vol. They have been designed and certified to be used in potentially explosive atmospheres classified as zone 1, 2, 21 and 22 together with an appropriately certified interface/enclosure. The protection level applied on the IRIS series is: Group II; Category 2GD; Protection for flammable gases: Ex e mb [ib] ib IIB; Protection for dust: Ex tD A21 IP65. The sensors are certified as components according to the essential and health safety requirements of the Directive 94/9/EC ATEX.
Reader Reply Card no 58 New Dual Purpose Gas Detection Cameras
Three years ago FLIR (UK) revolutionised gas and VOC leak detection by applying infrared technology to the application. It has since developed a series of dedicated cameras that allow the user to inspect large areas of plant in real time and pinpoint the source of the leak; models can detect a range of hazardous and greenhouse gases including SF6. As a result these cameras are now used extensively in the petrochemical, chemical and power generation sectors to protect personnel, reduce waste, contain costs and ensure environmental compliance.
With its latest introduction FLIR has added considerable value to this capability. Its new FLIR GF320 infrared camera is for general gas detection, but is fully radiometric as well. This means it can see, measure and visualise temperature too. So in addition to gas leak detection this newcomer can also be used for infrared electrical and mechanical inspection. It is a shining example of FLIR’s drive to provide customers with the very best return on their investment.
Many thousands of potential leak sources can be scanned per shift with the FLIR GF320 without having to interrupt the process. It reduces repair downtime, provides verification of the process and above all is exceptionally safe as it allows potentially dangerous leaks of gases, such as carbon monoxide, to be monitored from several metres away.
Although gas leak detection is a vital process on any processing site it is estimated that 84% of leaks are found in less than 1% of the plant. However as even one single leak could represent a substantial of loss revenue the discovery of its source by the most effective means is vital. FLIR gas detection provides that assurance.
Who candetect? Drägercan!
www.draeger.com Reader Reply Card no 59
As the FLIR GF320 gives a complete picture, areas that do not require further investigation can be eliminated immediately. Furthermore as it has a high sensitivity of
Whilst these gas detection benefits are inherent to the entire FLIR GF-Series, the FLIR GF320 with Sterling cooled detector is distinguished by its dual purpose capability. That means it can also be used to look at anything from a worn bearing or faulty electrical connection to a leaking pipe or missing insulation. It is able to measure temperatures from -40°C to +350°C with ±1°C of accuracy. In built video recording, digital camera and laser pointer all enhance the potential of this multi-purpose model.
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Annual Buyers Guide 2009
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