As the level changes, the frequency of the fork will change detecting the level. When the level switch is used as a high-level point alarm, the liquid rises in the vessel (tank) or pipe making contact with the fork and causing the output state to switch i.e. The fork vibrates at its natural resonant frequency. They use a fork-shaped sensing element with two tines. From Temecula, California, United States. Vibrating or tuning forks is another type of point level sensor. Many vessels have restrictions including agitators, heat exchangers and other internal structures that require the use of a separate chamber to perform the level measurement. These changes of the tuning fork level switch are measured, processed and converted into a switch signal by the intelligent circuit. Tuning Fork Level Switch Flanged 24 VDC Explosion Proof Approx. tanks level sensors are top-mounted, which creates several options, including guided wave radar transmitters, non-contacting radar gauges and vibrating fork switches. 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. A Novel High-Q Dual-Mass MEMS Tuning Fork Gyroscope Based on 3D Wafer-Level Packaging. Tuning Fork Level SensorVQ Series Electrode level sensor for liquid fluid. Tuning fork switches utilize vibration measurement to detect levels and are ideal for powders and fine-grained solids. As the level changes, the frequency of the fork will change detecting the level. Level detection of large tanks and water treatment plants. Vibrating or tuning forks is another type of point level sensor. Wetted parts, the fork and proces Electrode level sensor for liquid fluid. 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. Designed around the tuning fork principle, it consists of a two-pronged fork which vibrates at its natural frequency. Magnetic Float SensorFR(reed switch) Tuning fork type liquid level switches. VQ is a compact level sensor ideal for integration into machinery. 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. Status indication: Green light: indicate power supply.Factory price level switch with multi-function panel, aluminum alloy shell and the protection grade is IP67. Vibrating (Tuning fork) The vibrating or tuning fork sensor can be used to detect overfill or to prevent dry-running for applications where theres turbulence, air bubbles, or varying products. Magnetic testing: Output function test performed by putting magnets near the indicated spot These level sensors are used for tank level measurement for boiler water, highly corrosive liquids, and reagent monitoring. Supply voltage & output: 12~55 Vdc 3 wire PNP/ NPN Output.ĭensity: >/= 0.7g/cm ³ Viscosity:1~10000 cSt Therefore, there is no signal amplification circuit inside, which can eliminate the trouble of frequent sensitivity adjustment due to the material change. The product relies on the damping effect by covering the testing material on the tuning fork which reduces the vibration frequency of the tuning fork and outputs a switch signal. It will be converted into the output of the contact signal when the circuit detects the frequency decrease of the signal. When the fork comes into contact with a material, the fork will release some frequency signal as feedback. Vibrating tuning fork devices for monitoring liquid level and activating switch contacts at predetermined liquid level thresholds. The piezoelectric component is used to drive the tuning fork and feedback signal, which produces the resonation on the fork.
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