SHOWCASE
Standard position switches for extreme applications
Analyser helps
protect safety of diving gas
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n advanced multiparameter gas analysis technology (FTIR) from Quantitech is being employed by Case Chemicals to analyse diving gas for recreational, commercial and military divers. According to Case’s Sam Wray, “This technology provides much higher levels of confidence than traditional techniques, partly because it is highly accurate and also because FTIR can detect almost any gas or vapour.” The FTIR analyser employed by Case Chemicals was supplied by Quantitech’s Dr Andrew Hobson who pre-configured the analyser (a Gasmet DX4030) to measure a wide range of parameters including CO, CO2, hydrocarbons, NH3, HCl, HF, NO2, N2O, SO2 and a range of halocarbons such as Freon. Sam Wray says, “In the past, some of our clients have used chemical stain tubes which can have an error of up to 30%, so whilst these are individually cheap, they are highly inaccurate in comparison with FTIR and only test for one gas.”
Quantitech Ltd. Tel: 01908 227722 Web:
www.quantitech.co.uk
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et, extreme temperatures and explosive zones: these are typical environments for the completely new ES/EM 98 standard position switch series from steute. Mounting dimensions in accordance with DIN EN 50041, our new position switches are very versatile. Their robust metal enclosures can withstand high levels of mechanical wear and tear. Depending on the wishes of the user and the sealing type, variants in protection classes IP 66, IP 67 and IP 69K are available. An enormous temperature range from -40°C to +100°C increases the application potential for this new switchgear series even further. Users can choose from a large selection of actuators, and the available switching inserts include a new, pressure- resistant variant with three contacts designed as a snap action contact with positive break NC contact. In the near future variants will also be available which have been reinforced to meet the requirements for gas and dust explosion protection (zones 1 and 2/ zones 21 and 22 according to ATEX guidelines) and correspondingly certified. As a further, particularly innovative addition to the new range, steute has developed RF 98 wireless versions which work according to the »energy harvesting« principle and require neither cables not batteries.
W Steute Tel: 01684 310430 Web:
www.steute.co.uk
ABB’s energy harvesting wireless temperature transmitter ‘could go on forever’
ovel energy harvesting technology from ABB is enabling Robinson Brothers to make remote temperature measurements without the need for a power supply to the transmitter. Combined with
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WirelessHART communications technology, this eliminates the need for any cabling to the instrument. A manufacturer of speciality chemicals based in the West Midlands, Robinson Brothers is trialling the transmitter on the steam main supplying its chemical manufacturing plant. The ABB transmitter is powered by an on-board micro-thermoelectric generator (micro-TEG), which is driven by the temperature difference between the steam pipe and the ambient surroundings. The micro-TEGS used in ABB’s WirelessHART temperature transmitters provide a robust and compact solution for energy harvesting from either hot or cold processes. With many industrial processes, such as those at Robinson Brothers, having an abundance of heat, the power that can be delivered by TEGs is sufficient to operate wireless sensors in a variety of locations.
ABB Tel: 0870 600 6122 Web:
www.abb.co.uk enter 802 enter 801
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