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however new digital technologies including Ultrasonic and Thermal Mass flow measurement are challenging this status quo. The MFGD Thermal Mass meter


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manufactured by Siargo, and exclusive to Bell Flow Systems, incorporates MEMS sensor intelligence showing flow rate and total flow displayed on the integrated LCD readout. Designed for natural gas metering, the MFGD


can reduce traditional uncorrected accuracy losses caused by temperature and pressure variations. These battery powered models compensate electronically for the volumetric


MFGD Gas Flow Meters merge current technologies with traditional metering


urbine, rotary piston and diaphragm gas flow meters have traditionally dominated the UK gas metering marketplace,


expansion of gas using this MEMS technology. These sensors feature zero moving parts in an unobstructed flow path, facilitating extremely low pressure drop. This has a high turndown ratio and remains accurate over a wide measuring range. The MFGD models provide a pulse output


and RS232 for remote data logging capabilities and BMS integration. The large integrated data logging memory allows for easy historical download and subsequent analysis. This range is constructed of Aluminium with stainless steel options and features BSP threaded connections as standard, available in sizes DN32 to DN80 with a flow range of 0.1 to 500 Nm3/hr, ideal


Spacesaving split aircon saves energy for server rooms


precision airconditioning units. Temperature management for IT


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infrastructure is critical, even for smaller server and technical rooms, and precision airconditioning is vital. To meet this demand, a new split airconditioning system – the EC Tower – has been launched by STULZ UK, offering high levels of reliability and precision control, in a fraction of the footprint of conventional airconditioning systems. “All too often, poorly specified cooling


technology leads to erratic climate control, increased operating expenditure and costly disruption to IT operations. Downtime is not an option regardless of the size of the server room. However, precision cooling solutions, such as the EC Tower series, are ideally suited to technical spaces that cannot compromise on reliability, space or cost,” comments Phil McEneaney, Head of Sales, STULZ UK. The EC Tower series combines the proven


reliability of STULZ's precision air conditioning technology with the advantages of modern inverter outdoor condensing unit. A split climate solution, the EC Tower range can be rapidly deployed for heat loads of 5kW to 24 kW. A key advantage of the outdoor condensing unit is the ability to support dynamic capacity adjustment of the rated cooling capacity – which delivers significant energy savings. “For SMEs this is an important


consideration – energy efficiency is high on the agenda from a corporate responsibility perspective, but it also improves the bottom line,” McEneaney adds. The EC Tower series is designed for continuous, 24/7 cooling of technical


rooms. While conventional comfort air conditioning units can use up to 40% of their cooling capacity in dehumidification, the EC Tower generates between 90% and 100% of sensible cooling capacity which reduces dehumidification and lost performance. The high Sensible Heat Ratio (SHR) value eliminates problems associated with removing moisture via the evaporator which can be an issue in technical environments, causing static build up within the technical equipment. An additional benefit of the EC Tower is


the increased distance between the internal and external condensing unit of up to 100 metres which enables flexible installation. “We have listened to the needs of


customers and developed a spacesaving solution that offers the benefits of easy installation and precision control,” concludes McEneaney. When space is at a premium, this configuration will prove ideal for end users.” Email: sales@stulz.co.uk or visit:


www.stulz.co.uk/ectower/ G


rässlin, specialist in time switch technology, light and temperature control and energy and hour meters, has appointed Noel O’Donnell


head of their sales office in the United Kingdom. Grässlin GmbH, who are based in St. Georgen in Germany, have been supplying their products on international markets and have maintained a UK presence for more than thirty years. “We’re looking forward to working with Noel. He knows the British market and what our customers expect. Together, we’ll continue to strengthen and grow Grässlin’s market position in the UK,” says Julian de la Cuesta, Grässlin GmbH’s General Manager. Before joining Grässlin, Noel worked for Surestop Ltd., an innovative manufacturer of valves for the heating and sanitation market in the UK. Noel started work for the company in 2006 as head of sales and marketing and as one of the management team played a major role in promoting the company’s rapid growth. Before that, Noel gained lots of experience managing and organising trade fairs and conferences, in the UK as well as Saudi Arabia and Jordan. Noel lives in Bromsgrove, Worcestershire, together with his wife Helen and their three children Michael, Danny and Daisy.


www.graesslin.de


UFH efficiency rises thanks to Roth UK, DosaFil and SolidTek partnership


systems – a situation which is not only wholly unacceptable, but entirely unnecessary, according to UFH specialist, Roth UK, and British water treatment manufacturers, DosaFil and SolidTek. Moreover, the companies are ready to prove it, with a pioneering partnership that aims to eliminate poor water quality for good, and provide UFH users with reliable heat, longlasting systems, and optimal energy savings on every installation. “Poor water treatment is a serious problem


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in the commercial HVAC industry. As an OEM, Roth products are designed, manufactured, and distributed from one source, which gives customers exceptional care from start to finish. So, it can be very frustrating for us – even more so for our customers – when those systems experience problems because they haven’t received the correct water treatment,” explained Chris Hayes, Country Specification Manager at Roth UK. “This is why we’ve partnered with DosaFil and SolidTek; the products and service these companies offer are truly the exception to the rule. Backed by extensive field trialling, these technologies are proven to deliver rock solid water treatment that’s also cost effective and convenient for customers.”


oor water quality is responsible for the premature failure of around half of all commercial underfloor heating (UFH)


DosaFilDuo® is the only device on the


market to combine the safe dosing of solid or liquid treatment chemicals (of any brand) into hot or cold closed recirculating water systems with constant side stream filtration and continuous air removal. Uniquely, the unit features smart monitoring technology as standard to ensure optimal filter bag replacement, while its standard operating pressure and temperature ranges are unmatched in the market today. SolidTek products are similarly innovative;


the company manufactures and distributes safe, easy to handle and ecofriendly solid paste chemicals, in addition to liquid chemicals and a range of dosing and dissolving equipment. When SolidTek solid paste chemical sticks are used with DosaFil Duo, the device becomes the UK’s most environmentallyfriendly chemical system. Roth is one of the most wellknown and


respected names in the UFH arena, having been established in 1947. The company serves the UK market from its Worcester premises. “Industry is getting a shakeup with this


partnership, and we’re genuinely excited to be setting a new level of service in the treatment of UFH systems,” concluded Steve Crick, Managing Director of DosaFil and SolidTek.


www.dosafil.co.ukwww.solidtek.co.ukwww.rothuk.com/en Read the latest at: www.bsee.co.uk


uBefore and Aer images of an UFH system in a school building. The aer image shows heat eciency returned to the system aer it had been treated using the DosaFil device and SolidTek chemicals.


TULZ’s new EC Tower, is designed for rapid deployment and requires a third of the footprint of some conventional


for light industrial gas measurement applications. For more information please contact:


mail@bellflowsystems.co.uk


Noel O’Donnell takes over as new general manager of Grässlin UK


has shown that innovation doesn’t have to be restricted to new product development; having enhanced a product that has been one of its bestsellers for over 20years. Ellis’ technical team


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have taken the company’s cable hangers, which are used primarily in the rail industry and made them stronger and, remarkably, cheaper. This was achieved by looking at


every aspect of the product for ways to improve it. The first key development is that there are two different versions of the new Ellis cable hanger – a standard Mk2 cable hanger, and a convex hanger; the latter designed specifically for use in tunnels, where the mounting surface is often curved. Benefits of the new Mk2 cable


hangers include:


Advertorial BSEE


Innovative Ellis improves on its tried, tested and trusted cable hangers


he world’s leading cable cleat manufacturer, Ellis


uRounded corners that reduce snagging points


uSpin galvanized (55μm or 150μm thickness) to protect against erosion


uOnly 6mm thick, leading to reduced product and shipping costs


uSuitable for cables up to 100mm diameter


uWide range of sizes available


uCustom designs available uRolled designs for tunnels available Meanwhile, the convex cable


hanger also benefits from: uhe removal of all sharp edges presented to the cable by traditional hangers


uThrough innovative design, it’s the same strength as Mk2, but only 5mm thick – further reducing product and shipping costs


www.ellispatents.co.uk


HBM technology takes the load during bridge project


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Measurement specialist’s equipment helps ensure success of Hercílio Luz bridge restoration


s part of a major project to restore Brazil’s longest suspension bridge,


construction company Teixeira Duarte used optical and strain gauge technology, provided by HBM, to ensure the 90yearold structure would provide safe passage for numerous pedestrians and vehicles crossing each day. Opened in 1926 to link the Island of Santa Catarina to mainland Brazil, the Hercílio Luz bridge maintained its original structure despite sea corrosion and everincreasing vehicle weight  loads much higher than it was originally designed to bear. Safety fears meant Hercílio Luz was completely closed in 1991, but it has since been declared a historical landmark and plans to restore the bridge put in place. Teixeira Duarte was hired for


the complete rehabilitation of the Bridge, including replacement of


bearing supports in the main towers, reinforcement and recovery of foundations, plus application of new decks for vehicles and pedestrians. The most critical part of the


project involved the transfer of load from the central span of the bridge to auxiliary structures. To overcome this challenging step, Teixeira Duarte chose HBM’s technology, including sensors and optical interrogators with Fiber Bragg Grating (FBG) technology to monitor strain at critical points in the structure, electrical sensors for reading of various signals including inclination, temperature, wind and sea current. Tel: 01525 304980, email:


info@uk.hbm.com or visit: www.hbm.com


Riello’s premix burners now up to 3MW


outputs up to 3MW, offering NOx levels of less than 40mg/kWh, with high turndown ratios of up to 8:1, across a wide range of models.


R Riello RX burners feature


an exclusive design that includes a patented woven wire gauze ‘sock’ covering the combustion head cylinder. Gas and combustion air are mixed upstream of the combustion head and then pass through precision located ports and the gauze ‘sock’ to ignite on the external surface of the combustion head. This arrangement enables a very compact flame with a diameter directly related to the burner firing rate, ensuring precise heat control and optimum efficiency at all loads.


The high turndown makes RX


burners ideal for systems with variable heat loads where low NOx levels are also required. These range from condensing


boilers through to process applications such as spray booths and industrial ovens. RX burners can be used in


conjunction with variable speed drive motors to reduce electricity consumption and lower noise levels even further than the typical 30% noise reduction compared to many other combustion applications. Control options include progressive two stage operation and fully modulating via 010V or 420 mA. Full electronic control with operational and diagnostic display is also available. For further information visit:


www.rielloburners.co.uk BUILDING SERVICES & ENVIRONMENTAL ENGINEER AUGUST 2019 39


iello RX premix packaged burners are now available in


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