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In all industries, knowing when to st p or start any process is cr cial. If you are filling, emptying, pr tecting or controlling processes, for every b siness the security and reliability of th se systems is paramount. Unnoticed failure of sw tching systems and their ability to d tect can cost money...even threaten the nvironment or worse! Selection of switches is an mportant step in the planning of a l vel control. To ensure the reliability of any s lution, the chemical and physical features, h gh temperatures, pressures, build up, vapours, f am generation, dust, static charge, stirrers tc., must always be considered. Now l t's take a look at the M asuring Principles of vibrating instruments used for L vel switching. Measuring principle of Vibrating Level Switch for Liquids The piezo drive is the heart of the sensor, activating the tuning fork to vibrate on its resonance frequency. The frequency of the fork reduces with the immersion. The frequency change is evaluated by the integrated electronics and converted into a switching signal. An optimized screwed connection is used to ensure reliability and ruggedness of the piezo drive. With the tuning fork of only 40 mm length, the vibrating level switch for liquids work reliably in all liquids independent of the installation position. Pressure, temperature, foam, viscosity and bubbles do not influence the switching accuracy.
Measuring principle of Vibrating L vel Switch for Solids The vibrating rod of v brating level switch for solids is ctivated to vibrate via the piezo dr ve. If the vibrating rod is mmersed, the amplitude will be damped. The lectronics detects this damping and converts it nto a switching command. Due to the rod d sign, it is almost impossible for m terial to build up or get w dged in. The easy cleanability offers the r quirements for use in the food pr cessing and pharmaceutical industry. The installation p sition and granulation size do not nfluence the reliability. Mounting and setup are v ry easy, an adjustment with medium is not n cessary. Typical applications are overfill and dry run pr tection systems in products such as pl stic granules, styrofoam, milk powder and p llets. There are more robust and r liable tuning forks, which work in m ch the same way as the bove, but are more rugged and h ve an insensitivity to build up, m king it the ideal type of s nsor for powders and fine-grained products. Typ cal applications for these more robust l vel switches are overfill and dry run pr tection systems in products such as fl ur, cement, plastic granules, sand fine gr vel and styrofoam.
The article Level Switching - Measuring Principles of Vibrating Level Switches was Submitted by D Anderson through Articles.GetACoder.com network. Here's the additional information: How Can I Find Out M re? Easy, just contact VEGA! An xperienced area engineer is your dedicated p int of contact, backed by a f cussed customer service team. We can g ve you prices delivery and advice f st over the phone; send you nformation, application data and references. Most of ll, we'd like to discuss your pplication, to ensure the right solution, f rst time, to suit your process, b dget and installation needs. http://www.vegacontrols.co.uk
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