Thursday 22/8/2019

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Editor's Comment
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Determining that electric motors are properly loaded enables users to make informed decisions about when to replace them; and decisions about which replacements to choose. Measuring motor loads is relatively quick and easy with the right equipment, and every company with a significant motor stock should be looking to perform a motor load and efficiency analysis as part of their preventative maintenance and energy conservation programmes.
Engineers are always under pressure to reduce costs, improve quality and optimise plant utilisation, but as the saying goes, if you can’t measure it, you can’t control it. Stuart Hannah of HMS Industrial Networks explains how the use of cloud computing and the Internet make remote management of your plant and assets a much simpler and more attractive proposition than in the past.
07/09/2011 - Identifying and correcting the causes of bearing failure
Identifying and analysing the root cause of a bearing failure is critical in order to prevent similar failures from occurring again. Brian Williams, Quality Director at The Barden Corporation, urges companies to introduce a regime that enables the symptoms of bearing damage to be recognised early, as well as putting a systematic procedure in place for securing damaged bearings.
18/07/2011 - Don’t Jump to Conclusions over Drive Efficiency
Fitting variable speed drives to motors is often put forward as a way of saving energy, and this idea appears to have influenced the wording of part of the European Ecodesign Directive. However, as Phil George of Eaton’s Electrical Sector explains, variable speed drives are not always the most energy efficient choice.
17/06/2011 - Substantial savings to be made with revolutionary bearings
Phil Burge, Communication Manager for SKF, explores the options of motor replacement and repair looking in detail at the latest bearing technology that is enabling considerable energy savings to be realised.
25/05/2011 - The next big thing?
35 years ago the salesperson selling compressed air generation and treatment equipment had very few tools at his disposal. Many systems were oversized because there was no low cost means of deciding the size of the system so educated guesswork was the order of the day. The only scientific way to determine component sizes was to note all equipment consuming compressed air and then observe the cycles or take a usage factor ie if using a drill it is unlikely that the drill would be in constant use as the hole would normally be drilled to insert a screw or bolt. Even doing this usually led to a calculation which would oversize a system because the biggest sin would be to not have a system with adequate capacity. Air quality was poor relative to today. Filter manufacturers were still focussing on sterile air and process filters rather than the new kid on the block-compressed air. Dryer manufacturers were making fridge dryers with no great attention to power consumption or pressure drop and desiccant dryers were selected on capital cost rather than running costs resulting in more “heatless” dryers purchased but wasting up to 20% of compressed air through purge loss.
15/03/2011 - Accurate Measurement of Shaft Speed
Measuring or controlling the speed of most rotating shafts is straightforward but significant problems can arise as soon as we start to talk about accuracy. Mark Howard from Zettlex Ltd. examines the issues involved and suggests some simple solutions to longstanding problems.
21/02/2011 - Measuring Position or Speed in Harsh Environments
Harsh environments come in many forms but their common feature is that they place heavy demands on control equipment. The failure of position or speed sensors in the field can have a massive technical or commercial impact. If you are the engineer that specified the sensors in the first place, sensor failure might also have an impact on your career. So how do you make sure your sensors won’t let you down when the going gets tough? Mark Howard from Zettlex Ltd. examines the options.
13/01/2011 - Custom versus Standard Sensors
Why do some engineers choose custom sensors and others standard ‘off-the-shelf’ versions? Often the right choice is not straightforward. Mark Howard from Zettlex Ltd examines the pros & cons of custom versus standard position sensors and explains why new technology is changing the rules.
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Product categories: Accelerometers | Actuators | Agitators | Analysers | Bearings | Compressors | Controllers | Conveyors | Drives | Enclosures | Flowmeters | Heat Exchangers | Motors | Pumps | Relays | Sensors | Transducers | Transmitters | Valves | Weighing
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