Product Overview
Chongqing Chuanyi VS Series Tuning Fork Level Switch
VS
The Chongqing Chuanyi VS series tuning fork level switch is engineered for reliable point level detection of liquids, slurries, and free-flowing solids in industrial storage vessels. Utilizing piezoelectric crystal vibration technology, it provides dependable high-level or low-level limit switching across diverse process conditions.
The Chongqing Chuanyi VS Series Tuning Fork Level Switch represents an advanced and dependable solution for point level measurement and automation control in liquid and solid handling systems. Built around solid-state electronics and a robust fork structure, the device delivers precise detection without being affected by medium turbulence, air bubbles, viscosity, or changing dielectric constants.
Advanced Piezoelectric Resonance Principle The core mechanism relies on dual piezoelectric crystals. One crystal drives the tuning fork to oscillate at its precise mechanical resonance frequency, while the second crystal senses the vibration and converts it back into an electrical signal. When the process material covers the forks, the acoustic impedance causes a distinct dampening of the vibration amplitude. Internal electronic circuitry detects this frequency shift and instantly switches the relay contact status, offering high sensitivity and rapid response times.
Robust Design and Maintenance-Free Operation Unlike mechanical float switches or paddle devices, the VS series features no rotating parts, hinges, or crevices where material can jam or wear out. This solid-state construction prevents mechanical fatigue and minimizes maintenance requirements. Furthermore, its self-cleaning fork profile prevents product buildup, making it exceptionally resilient in sticky liquids, emulsions, and powdery bulk solids.
Flexible Installation and Seamless Integration The switch is designed for versatile top or side mounting via standard threaded or flanged process connections. Equipped with selectable switching delay functions and robust relay outputs, it integrates effortlessly into local alarm circuits, PLCs, and plant Distributed Control Systems (DCS) to manage overflow protection, pump run dry prevention, and automated filling.
Applications
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Petroleum & Chemical Processing: Monitoring chemical storage tanks, acid/base solutions, solvents, and petrochemical products.
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Water & Wastewater Treatment: Level limit control in water reservoirs, sewage treatment tanks, and sludge pits.
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Food & Beverage / Pharmaceuticals: Level detection in hygienic liquid tanks, cleaning fluids, and buffer vessels.
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Power Generation & Metallurgy: Managing cooling water systems, lubrication oil tanks, and condensate collection.
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Grain, Feed & Bulk Materials: Point level control for fine powders and light granules in storage hoppers.
Technical Parameters
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Product Series: Chongqing Chuanyi VS Series
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Measurement Principle: Piezoelectric Vibrating Tuning Fork Resonance
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Applicable Media: Liquids, viscous fluids, slurries, and fine powders
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Output Signal: Relay contact output (SPDT) or solid-state electronic switch
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Power Supply: Standard industrial DC/AC power configurations
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Enclosure Rating: Weatherproof and robust industrial housing for field installations
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Process Connection: Threaded or flanged mounting options

FAQ
Q1: How does the tuning fork level switch detect material presence? A: The switch uses piezoelectric elements to vibrate the forks at a specific resonant frequency. When the medium contacts and dampens the forks, the vibration shift is detected by the electronics, which immediately alters the relay output status.
Q2: Can the VS series be used for viscous liquids or sticky coatings? A: Yes, the tuning fork design features a smooth, streamlined profile that minimizes material adhesion. It is well-suited for viscous liquids, slurries, and light coatings without causing false triggers.
Q3: Does the tuning fork switch require regular calibration? A: No calibration or adjustment is required prior to installation. The switch operates reliably out-of-the-box based on the physical resonance properties of the medium.
Q4: Is this switch suitable for both high-level and low-level alarms? A: Yes, it features selectable switch logic (such as High/Low fail-safe modes), making it ideal for overflow prevention (high-level) or pump protection against dry-running (low-level).
Product documents
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