Relay water level, tuning fork liquid level switch
The level switch vibrating fork its vibration through the resonance of the transistor. When subjected to material damping, the amplitude sharply decreases and the frequency and phase undergo significant changes. These changes are detected by the internal electronic circuit, processed, and converted into a switch signal output.
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The level switch vibrating fork, also known as the vibration-type liquid level switch, is a highly reliable device used to measure and control liquid levels in hazardous environments. Its primary function is to detect the presence or absence of liquid level in tanks, vessels, and pipelines and send signals to the control panel to activate alarms, pumps, and valves.
The basic principle of the level switch vibrating fork is centered around a piezoelectric crystal that produces vibrations when subjected to an electrical current. This crystal is encapsulated in a stainless steel housing with two prongs that form a tuning fork. The prongs vibrate at a specific frequency when there is no liquid, but when they come into contact with a liquid medium, the vibration frequency reduces, and this is detected by the sensor circuitry.
Since the level switch vibrating fork is highly sensitive to changes in vibration frequency caused by the presence or absence of liquids, it is essential to calibrate it correctly to avoid false or missed signals. Calibration involves setting the switching point (on/off) of the instrument to the desired level, which is typically done through a potentiometer located on the control panel.
The use of this technology in hazardous environments requires that the instrument is designed to be explosion-proof, meaning it can withstand the presence of flammable vapors or gases without igniting or exploding. This is achieved through the use of specialized materials, such as stainless steel and aluminum alloys, and by incorporating various safety features, such as intrusion-resistant enclosures, flame arresters, and explosion-proof seals.
In summary, the level switch vibrating fork is a reliable, safe, and accurate instrument for measuring liquid levels in hazardous environments. Its basic principle involves detecting changes in vibration frequency caused by the presence or absence of liquids within a tank or vessel. Proper calibration and explosion-proof design make this an essential device for industrial applications, where safety and reliability are critical concerns.
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Explosion proof tuning fork level switches are widely used in petroleum, chemical, light industry, food, water treatment, building materials, and environmental protection industries, providing comprehensive solutions for various industries.
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12 month warranty period; Lifetime maintenance free
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