When the measured medium comes into contact with the tuning fork, it will change the feedback resonant frequency due to the damping resonances between the exciting PZT and receiving, PZT.īy detecting the frequency and appropriately tuning the sensitivity of Tuning Fork Level Switch on measured material, such device can easily operate for monitoring the alarm level of measured material. UWT offers the Mononivo Series 4000 for this purpose, which detects materials from a bulk density of 20 g/l and has a 1" process connection.įind out more about our vibration fork series Vibranivo® and our vibration rod series Mononivo®.Tuning Fork Level Switch is a mechanical resonant device which is excited by piezoelectric (PZT) elements. Vibrating forks are therefore well suited for small vessels and solids with large particle sizes. The switch vibrates at a resonant frequency. The LTU-2000 Series is based on the vibrating tuning fork principle, using piezoelectric crystals. In addition, there is no danger of solids with a large grain size becoming jammed, which leads to faulty switching in tuning forks. The LTU-2000 Series Tuning Fork Sensors are point level switches that are designed to detect low or high levels of liquids. With the vibrating rod, only one rod vibrates, which means that the vibrating rod can be built much more compactly. For this purpose, UWT offers the Vibranivo series 10, which detect materials with a bulk density of 50 g/l and more.Īnd are also suitable for interface measurement. These vibrating forks are particularly suitable for strongly adhering materials as well as for the detection of solids in Vibrating fork short = lower sensitivity = higher resonance frequency = stronger self-cleaning effect.Vibranivo Series 20, which can even detect materials with a bulk density < 5 g/l. These vibrating forks are particularly suitable for very light and few adhering materials. For point level detection in liquids a sensor in form of a tuning fork is excited at its resonant frequency. Vibrating fork long = higher sensitivity = lower resonant frequency = lower self-cleaning effect.It is a plug-and-play device, which means. Its robust construction and built-in powerful diagnostics will allow you to focus on the essential part - your plant. The Rosemount 2130 Level Switch is developed for challenging applications, tough operating conditions and safety critical environments. There is a relationship between resonant frequency, leg length, sensitivity and self-cleaning effect: Rosemount 2130 Level Switch ordering information. The L90 Series Vibrating Fork Level Switch is a heavy-duty, stainless steel tuning fork for measuring liquids across a range of media and applications. Typical applications are overfill or dry run protection. It is designed for industrial use in all areas of process technology and can be used in liquids. Due to the oscillation of the tines, a certain self-cleaning effect is created. The Type 8110 is a filling level switch for liquids, using a tuning fork as the sensor element. Vibration fork level switches consist of two tines vibrating at their mechanical resonance frequency. Vibrating level limit switches are differed between vibration fork and vibrating rod, which differ in their mechanical design but not in their operating principle. UWT vibrating level limit switches are suitable for process temperatures up to 150☌ and process pressures up to 16 bar. The design of this piezo stack largely defines the range of application. The main component of the vibrating level limit switch is a piezo stack which is electrically excited and thereby vibrates. Point level detection with Vibration Level Limit Switchesĭepending on the requirements, vibrating level limit switches are used as full, demand or empty detectors in storage silos or process vessels and are suitable for use in almost all media.
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