These changes of the tuning fork level switch are measured, processed and converted into a switch signal by the intelligent circuit. When the tuning fork of the tuning fork level switch is in contact with the measured medium, the frequency and amplitude of the tuning fork will change. The working principle of the tuning fork level switch is to make the tuning fork vibrate at a certain resonance frequency through a pair of piezoelectric crystals installed on the tuning fork base. Quality Vibration Type sensor vibrating level switch liquid sensor Explosion-proof stainless steel body tuning fork Level Switches with free worldwide. Tips: Working Principle of the Tuning Fork Level Switch. Tuning fork type level switch is widely used in chemical surveying, power plant surveying, reservoir surveying and medicine tank surveying. They are also suitable for mining, chemical processing, and food and beverage applications.Factory price level switch with multi-function panel, aluminum alloy shell and the protection grade is IP67. The models are easy to use and are ideal for controlling powders and fine-grained vibrating fork solid. Output type Working voltage Power consumption Input protection SC381 SC382 High-temp. Unaffected by foam, turbulence and air bubbles. Due to its compact structure it can be used in small vessels and pipelines. What is the use of tuning fork level switch?Ī tuning fork level switch for solids is a sensor that generates an electrical contact at a certain level. SC38 MULTI-FUNCTIONAL TUNING FORK LEVEL SWITCH NEPSI PROOF No.GYB14.1796X Ex ia IIC T3T6 Ga Output type is 8/16mA current output type has certified by NEPSI. SMARTsaa offer most Compact and miniature Compact Vibrating Fork Level Switch with corrosion resistant stainless steel enclosure for liquids and slurries of density greater than 0.7 gm/cc and viscosity up to 10000 centipoise. The threshold frequency is set to match the natural frequency of tuning fork type level switches under water. When the amplitude drops below a set threshold, the onboard electronics changes the outputs (relays).Īs the tuning fork type level switch is covered with liquid application media, its natural frequency decreases. It is important to consider the type of application media when monitoring given parameters.ġ.Amplitude of vibration: Vibrating Level Switch for SolidsĪs the material level increases and comes into contact with the Vibrating Fork tines, the amplitude of oscillation of tuning fork level switches dampens. Vibrating fork level sensors operate by vibrating tuning fork sensors continuously at their natural frequency and detecting the change in frequency and amplitude when application media is present. It may sometimes have a voltage-free contact, or sometimes it may have a fixed voltage of 0-12. A level switch's output can be voltage dependent or not, depending on the device. In the event of a variation in the level, the device raises an alarm or produces a sound. It works like any alarm switch that turns on/off when the level of fluid goes above or below a predetermined level. This prompts it to actuate an alarm, pump or valve. When the forks are exposed to liquid, the frequency drops and this is detected by the switch electronics. These models also feature two forks that vibrate at their mechanical resonance frequency, allowing them to self-clean when they come into contact with air. As it contacts the material in a tank, its oscillation stops, prompting the switch to output a detection signal. When the vibrating probe comes into contact with the medium, the vibration changes and the vibrating level switch outputs a switching command. Vibration type level switches are composed of a vibrating rod made from stainless steel. In point level measurement with vibrating level switches, a rod or a fork is set vibrating. It is the most widely used product in the material (liquid) level switch instrument. The product can adapt to the harsh working conditions and work reliably. When the vibrating fork for pharmaceuticals is subjected to medium damping, the v ibrating fork stops vibrating, and the control circuit drives the relay to send out a switch signal. The TFS Series is a vibrating type level switch for use in all liquid and slurry applications such as overflow, high, low, and demanding applications, as well. The sensing part for detecting the material (liquid) level is composed of the vibrating fork for liquids, which has a fixed vibration frequency and amplitude vibration. The Vibrating Fork Level Switch is designed using the principle of the damping effect of the medium on the v ibrating fork vibration and the piezoelectric effect.
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