Gas Detection
Detecting Methane Leaks from Up to 20 Metres Away in Seconds
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Crowcon Detection Instruments (UK) has launched its new LaserMethane®
mini Gen2
(LMm) portable methane detector. Designed specifically to detect methane at distance of up to 20 metres in seconds, the ATEX approved, second generation LMm is changing the way methane leaks are detected. What used to be a time consuming and potentially hazardous procedure is now quick and easy.
The LMm is very easy to operate. By pointing the device’s laser beam towards a suspected leak or survey line, such as a gas pipe or ceiling, the concentration of methane is measured by detecting the difference between the light emitted and the light received.
Reader Reply Card no 23
The device uses an innovative laser diode tuned specifically to the characteristics of methane, and the level is displayed on the ppm.m* readout. On start-up the instrument performs a self check and verifies the operation and calibration of the laser diode by referencing an inbuilt methane cell. This ensures consistent high performance, accuracy and reliability.
ATEX approval allows the LMm to be used in Zone 1 hazardous areas for on-plant use, in M2 mining applications, as well as detecting escapes in hard to reach or inaccessible areas such as roof spaces, pipelines crossing rivers or roads, fenced enclosures and landfill sites. This means there is no longer a need for personnel to put themselves at risk by entering suspected escape areas.
Not just portable, but truly handheld, the LMm weighs just 600g (1.3lbs), including the battery, and measures just 70mm x 179mm x 42mm (2.8 x 7 x 1.6 inches). Features include a full colour numeric or graphical display, audio and visual alarms, six hours minimum battery life per charge (four hour recharge), IP54 ingress protection, automatic ranging and a wide operating temperature range of -17°C to +50°C (1°F to 122°F).
Reader Reply Card no 24 Electrochemical Sensor Installed in 10 Million Homes Worldwide
At the heart of more than 10 million residential carbon monoxide detectors installed in homes throughout the world is City Technology’s ECOSURE electrochemical sensor, giving the occupants peace of mind and security from the lethal threat posed by the silent escape of invisible carbon monoxide gas from faulty or badly adjusted heating devices. ECOSURE is the sensor of choice for the great majority of CO detector manufacturers because of its performance, stability, reliability and extended operational life. It is also increasingly used in multi-sensor fire detectors to improve their detection reliability and reduce their false alarm rates.
ECOSURE is a two-wire electrochemical sensor with inbuilt filtering that protects it from poisons, interfering gases and dust, minimising the possibility of false alarms. Its inherent stability means that instrument manufacturers do not have to provide complex compensation circuitry. The sensors are
manufactured in a highly automated manufacturing facility and comprehensively tested at each intermediate stage during the production process. As a result, the standard deviation in the output of individual sensors is extremely small, again enabling instrument manufacturers to simplify their instrument designs, thereby reducing time to market and improving manufacturability.
In addition to its stability and false alarm immunity, the sensor is extremely fast to respond to the presence of carbon monoxide, reaching T90 in less than 20 seconds. It is mechanically robust, can be installed in any orientation without affecting performance and it operates from -10 to +50°C with continuous relative humidity ranging from 15 to 90%.
Reader Reply Card no 25 H2scan Receives Multi-Analyser Order from British Petroleum
H2scan Corporation (USA) announce that the BP Cherry Point refinery in Washington State selected multiple HY-OPTIMATM Hydrogen Process Analysers integrated with the NeSSI™ platform system for their analyser upgrades. H2scan’s analyser, based on Palladium-Nickel alloys and proprietary molecular coatings, have been operating successfully at the BP facility in the first
stage recycle compressor in the hydrocracker unit and have shown good performance in a high percentage, harsh contaminant (H2S) and multi-component process gas mixtures in comparison with traditional process analysers.
Integrated with state-of-the art modular Intraflow NeSSITM sample substrates provided to H2scan by Parker Hannifin, H2scan analysers will provide real-time measurement without the need of valve switching, frequent calibrations and is designed to save considerable retail space in BP’s analyser shelters. H2scan’s success with BP provides a good example of widespread acceptance of H2scan’s miniaturised and advanced analyser technologies in oil refineries.
BP’s Analyser Engineer, Ryan Holgate stated, “H2scan participated in a competitive bidding process with gas chromatographs over the past year and was selected based on a series of factors including performance, cost and maintainability.” The sample system design was finalised between H2scan, BP contractor CH2M Hill, Parker Hannifin and Gasalarm Systems, a Texas-based integrator contracted by H2scan.
“H2scan’s miniaturised process analysers are an excellent fit for our modular Intraflow NeSSITM platforms. We expect to extend our collaboration to several analyser projects in the future,” stated Steve Doe, Parker Hannifin’s Analytical Market Manager.
H2scan’s President and CEO, Dennis Reid said, “Being awarded this contract from BP and being able to utilise the experience and capability of companies like Parker Hannifin and CH2M Hill is extremely rewarding. The process has been seamless and we are on schedule to deliver the full multi-analyser and control system on-time. We are thrilled to be working with BP and are confident the partnership with our two companies will continue to expand the reach of our analysers.”
Reader Reply Card no 26
November/December 2010
IET
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