Article archive for Zettlex Ltd;
Potentiometers are still, by far, the most commonly used position sensor. They are widely seen as the low cost solution for many position sensing applications. But is their reputation for low cost justified? Mark Howard from Zettlex UK takes a holistic view on the cost of potentiometers, outlining some of the difficulties in changing from potentiometers to non-contact solutions and proposes some options....
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....
Most engineers still specify incremental position sensors because they think absolute versions are too costly. But the market has changed in recent years....
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?...
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?...
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....
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....
