Article archive for Zettlex Ltd
Measuring Position or Speed in Harsh Environments (28 February 2011)
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.
read more...
Incremental versus absolute sensors (15 December 2010)
Most engineers still specify incremental position sensors because they think absolute versions are too costly. But the market has changed in recent years.
read more...
Why do engineers dislike potentiometers? (29 November 2010)
Potentiometers have been around for a long time and are still, by far, the most commonly used position sensor. So why does every design engineer seem to be looking for a non-contact alternative?
read more...
Measuring the rotation angle of large diameter shafts (21 October 2010)
Traditional rotary encoders can be readily fitted to shaft diameters of less than 2 inches, but what happens if your design needs a much larger diameter through shaft or bore?
read more...
ATEX approved flow monitor (07 June 2010)
Flow-Mon has launched an ATEX version of its flow monitor, which utilises i-MON loop-powered position transmitters from Zettlex. The position transmitters use a non-contact inductive technique to measure flow accurately and reliably, no matter whether conditions are hot, cold, damp or wet. The loop-powered units provide local, clear analogue indication of flow, as well as remote 4…20mA electrical signals.
read more...
Fit-for-purpose at minimum cost (14 May 2010)
With such a bewildering array of position sensors to choose from these days, how do design engineers ensure they select the right one? Mark Howard, general manager at Zettlex, outlines the main types of sensor and their respective strengths and weaknesses.
read more...