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Tuneable diode laser spectroscopy (TDLS) is a unique analysis method that has widespread use in industrial gas measurements. Diode lasers enable specific detection of gas molecular absorption lines. Although these unique properties provide significant advantages over conventional measurement methods in some applications, there are aspects that affect the accuracy of laser measurements, if not considered properly.

During this webinar Bahram Alizadeh, (Specialist Research Engineer, Servomex) and Karen Gargallo, (Product Specialist TDLS, Servomex) will discuss laser spectroscopy technology with an emphasis on second harmonic wavelength modulation spectroscopy as applied to laser gas analysers. They will also explain the parameters that affect the accuracy of the TDLS gas analysis; such as the effect of window purge (for in-situ installations); line broadening influence of pressure, temperature and background gas composition; and optical interference noise caused by the coherent property of laser light.

Members of the Servomex expert team will be online all day at Servomex’s LinkedIn account at www.linkedin.com/company/servomex for live discussion and feedback

To ensure you get your FREE place at this unique global seminar, contact Peter Gumm at pgumm@servomex.com for online booking links.

The only truly portable battery powered gas analyser with MCERTS certification, the MiniMP is a portable analyser designed to offer single or dual measurement of O2 and carbon dioxide (CO2).  Offering accurate, stable and reliable measurement of O2 using Servomex’s non-depleting paramagnetic sensor technology, MiniMP delivers measurement accuracy ranges of between ±0.1% to ±0.02% O2.  The approval of EN15267-3 (MCERTS V3.3, Annex F) makes the MiniMP suitable for use as an SRM (Source Reference Method) according to EN14789 for verifying installed CEMS to the requirements of EN 14181.

Offering the benefits of larger and more expensive equipment in a compact, easy to use package, the MiniMP offers users an extensive range of features including audible alarms, datalogging and RS232 outputs.

CO2 is measured using digital infra red technology, a non-depleting technology that eliminates the requirement for regular replacement of sensors. Both the infra-red CO2 and paramagnetic O2 sensors give excellent rejection of contaminants and their non-depleting design ensures they will last many years without requiring replacement.

A tower form reduces valuable footprint, while the MiniMP can be powered by lithium ion cells for users who need reliability on the move.  A high definition LCD display shows the measured component level in a large, easy-to-read display, alongside indications of analyser status, alarms and output range. Additional options include single or dual gas measurements, 4-20mA outputs and an internal pump.

In addition to usage in the verification of CEMS systems, applications for the MiniMP range include usage in laboratories, air separation units, gas bottling plants, medical gas storage facilities, as well as use in respiration and physiology studies.

“The MiniMP is already established as a benchmark for excellence in portable gas analysis,” says Chris Cottrell, Managing Director, Servomex.
“MCERTS certification is just the latest success story for a product that continues to excel for customers in a range of industries.”

For more information about the SERVOFLEX MiniMP 5200, contact Servomex’s Regional Business Centres based in North America (+1 281 295 5800), Latin America (+55 115 188 8166), Europe/Africa (+31(0)79 330 1580) Middle East/India (+91(0)226 710 0360) and Asia Pacific (+86(0)216 489 7570).

The Institute of Measurement and Control has presented Compliance Engineer Ian Unwin the Alex Hough-Grassby Memorial Award for 2011, awarded for influencing the development of analysers that have both contributed to enhanced safety and improved understanding of the environment.

Ian’s early career included working for the Safety in Mines Research Establishment and Shell UK. Subsequent employment with the National Coal Board’s Mining Research and Development Establishment led to significant research into the underlying cause of the malfunction of commercial sensors when applied to fast-moving and dense smoke clouds. Other projects resulted in the development of intrinsically safe instrumentation for underground environments, while research into the generation of seismic waves in coal seams resulted in a patent application.

At Servomex – described by the Institute as an “outstandingly successful British analyser company” – Ian is responsible for ensuring that Servomex analysers satisfy international standards and comply with European Union Directives. These cover a wide range of considerations including electrical safety compliance, hazardous substances and technical aspects such as electromagnetic compatibility (EMC).

As an active member of the UK’s instrumentation, control, automation and laboratory technology industry trade association GAMBICA, Ian is a representative on a number of British Standards Institution committees, where his work benefits not only Servomex but the instrument industry at large.

Ian’s exceptional expertise and contribution to the instrument industry is summed up in his award citation:

“Ian’s career has embraced a comprehensive range of practical and theoretical analyser work in the accomplishment of his goals to improve the safety of mankind and of the environment. He is indeed a worthy winner of the Hough-Grassby award.”

A quarterly publication that integrates news about Servomex analysers, industry applications and technology with a definitive Servomex product guide, ES stands for Expert Solutions: a name that reflects the professionalism, expertise and reassurance our products and services bring to our customers.

Published each quarter in February, May, September and December, ES magazine is available as a printed edition and as an interactive version available to view on servomex.com. This interactive version enables readers to browse the magazine page-by-page, as well as enabling them to click direct to view product details, access resources or make enquiries. 

Available worldwide, Servomex customers can subscribe to receive either a print copy or link to the online edition by signing up at www.servomex.com/ESmagazine. To celebrate the launch of ES, all customers who subscribe will be entered into a quarterly prize draw to win a Servomex‐branded iPod Touch.

So don’t delay – subscribe for your copy of ES magazine TODAY.

Designed for meeting the quality requirements of Servomex products, but also highly  suitable for use with other analyser brands, the ServoCal kit consists of two 112 litre aluminium cylinders of specified calibration gas and a single fixed flow regulator, all packaged in a robust carry case for convenient transportation.

Portable and lightweight, the briefcase-style design allows easy, quick and safe calibration on site without the need for lifting gear, trolleys or outside storage.

Compatible with all major manufacturer regulators, ServoCal offers a long shelf-life with no complicated tools required for use. The non-refillable cylinder design removes the need for rental charges to be paid or fillable cylinders to be tracked, while refills are available for quick delivery worldwide. Empty cylinders can easily be recycled on site to reduce unnecessary shipping and administration costs.

ServoCal kits offer several logistical advantages to customers, including stocking at one location to enable easy gas management, delivery to commissioning sites independent or in advance of products, or direct shipping to an engineer to reduce the time and cost of collecting a kit from a depot.

Quality approved to ISO:9001 2008, all ServoCal gas mixtures are manufactured gravimetrically to NIST or NPL air kerma standards. A full range of analyser calibration gases are available for order, including nitrogen, oxygen, carbon monoxide, carbon dioxide, nitrous oxide and methane.

The Servomex ServoCal Gas Calibration Kit is available to order as a standard part from Servomex Global Business Centers based in North America (+1 281 295 5800), Latin America (+55 115 188 8166), Europe/Africa (+31(0)79 330 1580) Middle East/India (+91(0)226 710 0360) and Asia Pacific (+86(0)216 489 7570), or email info@servomex.com

Designed to deliver true continuous in-situ monitoring across short distances, the LaserCompact is optimised for measurement across pipes and along short cells.  Able to detect a wide range of gases including O2, HCl, HF, NH3, CO, CO2, H2O, H2S, HCN, NO, N2O, CH4 and other hydrocarbons, the LaserCompact utilises the latest Tuneable Diode Laser Spectroscopy (TDL) technology to deliver a fast response time of less than 2 seconds, highly stable performance and minimal interference from background gases.

With minimum sample conditioning requirements, zero drift and no moving parts and consumables, the LaserCompact delivers a low cost-of-ownership through minimal maintenance or downtime. As Servomex’s advanced TDL technology delivers measurement through a highly focused laser beam, the LaserCompact is able to measure through very thin nozzles, reducing or even eliminating consumption of purge gas.

Certified to ATEX and IECEx standards, the LaserCompact meets the requirements of new flammable sample regulations in full, allowing safe operation in situations where the process stream itself is flammable and has been classified as a Hazardous Area.  Optimised for easy installation on measurement cells or DN50/ANSI flanges, the robust design of the LaserCompact makes it ideal for gas measurements in hot, dirty or dangerous environments that can pose problems for some extractive analyser systems.

Key applications for the LaserCompact include a range of chemical industry applications, monitoring for contaminants and moisture in petrochemical processing, non-contact analysis of corrosive, dusty, tarry or sooty gases across pipes, and use in automobile manufacture on engine test stands.

“Following the great success of the SERVOTOUGH LaserSP, we have launched the LaserCompact to meet the needs of customers requiring a shorter path measurement,” says Chris Cottrell, Managing Director, Servomex.

“By offering the same exceptional reliability, stability and accuracy of measurement, the LaserCompact will bring TDL’s outstanding benefits to even more applications.”

While the discontinued PNT has been supported beyond product life span, obsolescence or unavailability of key components has made the analyzer more challenging to maintain. With it becoming increasingly difficult and expensive to guarantee cost-effective maintenance for the PNT, service and repairs will be gradually phased out from the end of 2012.

Servomex will however continue to provide sensor replacements and consumables such as electrolyte and replenishment fluid, as well as calibration services.

To help customers affected by this forthcoming change in support, Servomex – who acquired Delta F in 2010 - is offering PNT users the chance to trade up to the latest standards in analyzer performance by offering a replacement Delta F analyzer at an exclusive discount. Any customer who wishes to trade up to a current replacement model will not only benefit from the considerable performance improvements, but will for a limited period receive a trade-in discount for their analyzer.

PNT users are recommended to upgrade to the Delta F 500 series, which offers premium performance for the UHP semiconductor industry. As well as supporting all applications covered by the discontinued PNT, the DF 550E and DF 560E Nanotrace series uses new E sensor coulometric technology and a digital platform for industry-leading performance and greater operational flexibility.

For further information about changes to Servomex’s support of discontinued Delta F products, or to inquire about a trade-in for a new Delta F analyzer, contact Servomex Global Business Centers in North America (+1 281 295 5800), Latin America (+55 115 188 8166), Europe/Africa (+31(0)79 330 1580) Middle East/India (+91(0)226 710 0360) and Asia Pacific (+86(0)216 489 7570), or email info@servomex.com

While the discontinued PNT has been supported beyond product life span, obsolescence or unavailability of key components has made the analyzer more challenging to maintain. With it becoming increasingly difficult and expensive to guarantee cost-effective maintenance for the PNT, service and repairs will be gradually phased out from the end of 2012.

Servomex will however continue to provide sensor replacements and consumables such as electrolyte and replenishment fluid, as well as calibration services.

To help customers affected by this forthcoming change in support, Servomex – who acquired Delta F in 2010 - is offering PNT users the chance to trade up to the latest standards in analyzer performance by offering a replacement Delta F analyzer at an exclusive discount. Any customer who wishes to trade up to a current replacement model will not only benefit from the considerable performance improvements, but will for a limited period receive a trade-in discount for their analyzer.

PNT users are recommended to upgrade to the Delta F 500 series, which offers premium performance for the UHP semiconductor industry. As well as supporting all applications covered by the discontinued PNT, the DF 550E and DF 560E Nanotrace series uses new E sensor coulometric technology and a digital platform for industry-leading performance and greater operational flexibility.

For further information about changes to Servomex’s support of discontinued Delta F products, or to inquire about a trade-in for a new Delta F analyzer, contact Servomex Global Business Centers in North America (+1 281 295 5800), Latin America (+55 115 188 8166), Europe/Africa (+31(0)79 330 1580) Middle East/India (+91(0)226 710 0360) and Asia Pacific (+86(0)216 489 7570), or email info@servomex.com

As part of a series of articles on UK manufacturing, FT reporter Peter Marsh spoke to John O’Higgins, Chief Executive of parent company Spectris, at the Servomex Technical Centre in Crowborough, UK.  The interview focused on the macroeconomic trends which influence the demand for Spectris products, as well as the importance of specialist skills in the manufacture of precision instrumentation, as demonstrated by Servomex’s world-leading gas analysis equipment.

Peter Marsh experienced at first hand the intricate skills required in creating our Paramagnetic oxygen sensor technology, describing the expertise required as being “mid-way between those of a Venetian glassblower and a Swiss watchmaker to fashion a tiny glass sphere at the end of a thin tube.”

"I'm not aware of many other businesses that can do this kind of work, and we don't want to teach anyone how to do it,” John O’Higgins said. “Keeping control of this manufacturing technology is a key to staying ahead of competitors."