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Tuning fork level switches are widely used in metallurgy, building materials, chemical industry, food and other industries in the level process control, with long service life, stable performance, safety and reliability and other advantages, then the tuning fork level switch working principle is how?
Ordinary tuning fork level switch is installed in the tuning fork base of a pair of piezoelectric crystals so that the tuning fork in a certain resonance frequency vibration. When the tuning fork level switch tuning fork and the measured medium contact, the frequency and amplitude of the tuning fork will change, tuning fork level switch by the intelligent circuit to detect these changes, processing and will be converted to a switch signal.
As an example, the Fork-11 tuning fork level switch produced by Shenzhen Jiwei Automation Technology Co., Ltd. is based on the tuning fork design, and adopts a set of piezoelectric ceramics as the driving and detecting components to realize the vibration driving and detecting of the fork body. When not in contact with the material, the tuning fork vibrates freely at the resonant frequency (about 138Hz). When the tuning fork is in contact with the measured material, the vibration amplitude of the tuning fork decreases significantly, and the amplitude of the output signal of the piezoelectric detecting device decreases, and the signal change is detected and analyzed by the intelligent circuitry and outputs a switching signal.
CH-YC-11 tuning fork material level switch products through a reasonable increase in the area of the fork body, the sensitivity can be greatly improved, can measure the density of the material as low as 0.008g/cm³.
CH-YC-11 tuning fork material level switch is comparable to imported brands, the performance indicators are listed below:
