Gas Detection 21
Ultrasonic Gas Leak Detector Features HART Communications Protocol
Fixed Gas Detector Receives ATEX Approval
Oldham (France), an Industrial Scientific Company, is pleased to announce that the OLCT 10N fixed gas detector has been certified by INERIS and now carries the ATEX mark of approval. All versions have been certified IP65 and for use in zones 2 or 22, Group IIC or IIIC hazardous locations.
Designed for the detection of explosive gases (CH4, H2, C3H8 and C4H10), toxic gases (CO, NO, NO2, H2S and NH3) or oxygen, the OLCT 10N is a digital detector intended for use in combination with Oldham’s MX43 controller that
can reap the full benefits of digital technology. The MX43 offers up to 32 detectors per line, toxic and explosive gases can be combined on the same line, semi-automatic calibration enabled and reduced wiring costs
Satisfying your safety requirements means making genuine technological breakthroughs as well as providing clear economic value. Thanks to a magnetized calibration cup the calibration can be done without opening the enclosure. This allows maintenance by a single person and significant reduction in costs.
Additionally, once the calibration is done, the OLCT 10N transmits the relevant data to the MX43 (such as date of calibration, span reserve or T90) and really makes your maintenance safe and efficient!
With a 2-year warranty, the OLCT 10N transmitter will provide reliability and extended life. Reader Reply Card No. 70
Geotech Launches New Portable Biogas Analyser
The Gassonic Observer-H Ultrasonic Gas Leak Detector from General Monitors (USA) is ideal for gas leak detection in pressurized systems. The new Gassonic Observer-H features HART communications, Modbus with single and block transfer modes, Emerson AMS Intelligent Device Manager support, and event logging. The Observer-H is ATEX, IECEx, FM and CSA hazardous area certified and SIL 3 suitable.
The Gassonic Observer-H detects gas leaks by sensing the airborne ultrasound emitted from leaking gas at high pressure. It is suitable for gas detection in open, well- ventilated areas, where traditional detection methods may be unsuitable or dependent on ventilation. Since the gas leak detector responds to the source of a gas release rather than the dispersed gas, it is unaffected by changing wind directions, gas dilution, and the direction of the leak. The Gassonic Observer-H’s wide coverage zone makes it possible to supervise areas up to a 20 meter radius, for the detection of leaks as small as 0.1 kg/sec., with only one device.
Rugged and designed for failsafe operation, the Gassonic Observer-H features robust microphone technology with an advanced stainless steel microphone. The detector also offers the Senssonic™ integrated acoustic self-test, which verifies the integrity of the instrument’s electric circuit and microphone every 15 minutes. It features stainless steel, AISI 316L explosion-proof housing, offering corrosion resistance in the harshest environments.
The Gassonic Observer-H features a sophisticated high pass filter to remove frequencies below 25 kHz, effectively eliminating interference from audible sound. At the same time, setting the alarm trigger level above the ultrasonic background noise ensures the detector accurately detects gas leaks. The Observer-H is equipped with a 3-digit LED display and an event logging function that stores fault, sound check, calibration, and alarm event history.
The versatile Gassonic Observer-H can be configured with an analog output or Modbus or HART communications to provide complete status and control capability in the control room. The Modbus and HART data can also be used for predictive maintenance and to enable asset management and process improvement.
Reader Reply Card No. 73 Reader Reply Card No. 72
The new Geotech Biogas 5000 portable biogas analyser arrives in Jan 2012 with a colour-screen and a 3-year warranty. Up-to-the-minute as a new-generation biogas analyser for anaerobic digesters (AD), the Biogas 5000 has mobile phone-style intuitive menus, tactile buttons and it is fast, small and light. With a clear, full-colour, daylight-readable screen in several language choices, the Biogas 5000 is about 25 percent smaller and lighter than the Biogas Check which it supersedes. Advances include greater accuracy to ± 0.5 percent. Within AD biogas, the Biogas 5000 measures methane
(CH4) and carbon dioxide (CO2) with greater accuracy (both to ± 0.5%) and oxygen (O2). It optionally measures hydrogen sulphide (H2S) at low- or high-ranges to 10,000ppm. It also measures flow and holds 500 readings against 10 sample points. Analysis response is halved to 10 seconds, saving time and increasing productivity. User-driven improvements
include all inlet ports now at the top of the Biogas 5000. It meets UK and international certification standards including ISO 17025, ATEX and IECEx.
At the press of a button, anyone can see context-sensitive operational and user calibration assistance. These technical help screens explain what to do next. Users can pick up a Biogas 5000, select a language and use it with just a brief look at the manual. With the new Biogas 5000, Geotech is responding to growing demand for biogas analysers in many countries which have an increasing focus on renewable energy from biogas produced in AD.
The Biogas 5000 has evolved from earlier models and uses the latest tried and tested technology for in-field biogas analysis. Its development is based on 22-years’ experience by Geotech in design, manufacture and service of portable biogas analysers – and on vitally important feedback from customers and users. That specialist experience combines to deliver dependable reliability and the latest in user-requested operational functionality for anaerobic digester biogas analysis.
Reader Reply Card No. 71
www.envirotech-online.com AET Annual Buyers’ Guide 2012
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