Gas Detection 43 Wireless Version of Transportable Gas Detector Announced
Oldham (France), an IST Company, is very pleased to announce the launch of the exciting wireless version of the fi ve-sensor transportable gas detector, the BM 25. As wireless capabilities reach new technological milestones, the integration of wireless gas detection systems in industrial applications is ever increasing.
The network topology used by the BM 25 is a MESH network. In a mesh network all hosts are connected peer-to-peer without central hierarchy, thereby forming a net-like structure. Each node can receive, send and relay data and this avoids having sensitive points, which in case of failure, disrupts the connection of the network. If a node is down, it simply goes through another route. Mesh topology allows fast and simple deployment, high coverage versatility and high fault tolerance. It signifi cantly reduces installation and operating costs of networks.
If a BM 25 does not respond to network communication requests, the local gas detection capability remains effective and each BM 25 will provide local alarm capability in the presence of gas.
If the network is split due to an obstacle placed in the network, it is possible to continue to work as the network will automatically adjust and form two separate networks. When the obstacle is gone, the communication resumes automatically.
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Gas Analyser with Return Function Being Developed
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In response to the requirements of the electricity generation and distribution industries, Cambridge Sensotec (UK) is nearing completion of a new and exciting portable SF6 gas analyser to include a gas return function.
As GIS equipment contains pressurised SF6 gas, Cambridge Sensotec’s new analyser will allow the user to return the sample to pressurised switchgear. SF6 gas samples can be extracted from the GIS equipment into the analyser, measured and pumped back. This eliminates the need to refi ll the GIS and prevents the release of any SF6 gas into the atmosphere (in accordance with Kyoto greenhouse gas handing legislation).
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As part of the product’s development, Cambridge Sensotec is conducting extensive on-site trials to gain technical and practical knowledge. The information gathered has then been fed into the product development process, meaning the completed unit will be designed to meet all of the challenges faced by the user. The site visits included a tour of a typical substation facility and demonstrations by the site staff of the procedures of testing GIS equipment. Cambridge Sensotec’s prototype SF6 gas analyser was used in conjunction with both new and old GIS equipment in order to assess the applications requirements in full.
In addition to the analyser’s gas pump back facility, the portable analyser will include high precision gas sensors for measuring SF6, SO2
and H2 O, with the option of adding sensors for measuring HF and O2
The launch date of the new SF6 gas analyser is planned for Autumn 2014.
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A Dual-Gas Hydrocarbon / Carbon Dioxide Sensor in a Single Industry Standard Size Package
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The Dual-Gas ‘Platinum’ series of miniature infrared gas sensors from Dynament (UK) provide simultaneous measurement of Hydrocarbons / Carbon Dioxide within a single industry standard 20mm x 16mm package. They are now available in a Low Power version which consumes only 15 milliamps at 3 volts dc equivalent to 7.5 milliamps per sensor. An additional option is for EN 50271 / SIL 1 SIRA certifi ed versions.
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The sensors are particularly suited for use in Portable Gas Detectors where measurement of Hydrocarbons and Carbon Dioxide in a single package provides a saving in both a space and current consumption thereby increasing the operating time of battery powered equipment.
The ‘Ex’ certifi ed versions of the sensor have both IECEx and ATEX certifi cation for Industrial and Mining use. The Mining certfi cation includes M1 Ex d+ia I Ma.
The sensors can accurately detect gas levels over the range of 0 to 100% volume. The sensors can be pre-confi gured for specifi c measurement ranges according to customer requirements. Methane versions feature auto-ranging in order to provide high resolution for Lower Explosive Level (LEL) measurement and in addition contain a fully temperature compensated Propane characteristic.
The standard operating temperature range for the sensors is -20 to +50 degrees C.
Every individual sensor undergoes full temperature compensation over this range for Methane, Propane and Carbon Dioxide gases with the characteristics stored within the sensor electronics.
Extended temperature versions of the ‘Non-Ex’ form only are available to special order covering either -40 to +50 degrees C (‘XT’ type) or -40 to +75 degrees C (‘XTR’ type).
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a 7” touch screen display, pre-loaded IEC and CIGRE tests (custom tests can also be set), an 8 hour lithium ion battery, robust IP66 Peli-case, 12 months continuous data storage and optional DILO DN8 and DN20 fi ttings.
within the SF6 gas. The analyser will also feature
UV/IR Flame Detector • UV/IR Dual-Sensor
• 4~20mA, RS-485 and Relay • Invigorate latching with a dip switch • Light weight
Combined Ex-proof Sounder & Beacon
• Available in controlling the rotation speed of refl ector
• Available in various colors • Setting options depend on fi elds condition
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gastron advert IET
24.4.indd 1
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S.KOREA MADE
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business@gastron.com T. +82 31 490 0800 F. +82 31 490 0801
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3162ad@reply-direct.com GA3000 PLUS
4 Measures CH4, CO2, O2 and H2S 4 Robust and reliable equipment
4 Self-install fixed system with two-minute service downtime
4 Minimal running costs 4 Global support
4 Multi-sample point option – up to three sample points
4 H2S levels from 0-50ppm to 0-10,000ppm Now with NEW features
4 Auto-drain option to help with wet biogas 4 Pre-calibrated cells for all models
IR Gas Detector GIR-3000 • Intelligent & Local Display type • HART Communication • SIL2 / ATEX / IECEx / ABS / DNV / BV etc
Auto Sampling Type Gas Detector GTD-5000F • Electro-chemical, IR, PID, Catalytic Sensor • Detectible HC, Toxic, VOC gases & O2 • Flame proof structure with a micro pump
Biogas analyser
+44 (0)1926 338111
sales@geotech.co.uk www.geotechuk.com
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www.envirotech-online.com IET Annual Buyers’ Guide 2014/15
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