Tuning Fork Level Switch
Reliable point level detection for liquids, powders, and solid materials in industrial processes
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Stable level switching independent of flow, bubbles, or material properties
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Industrial-grade design for continuous operation
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Suitable for liquids, powders, and granular solids
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OEM / ODM and configuration options available
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Designed for long-term, low-maintenance operation
A practical and proven solution for tank, silo, and process level control.
In industrial environments, level switches often fail due to false triggering, material variation, or frequent maintenance requirements. Instrava’s tuning fork level switch is designed to address these common challenges.
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Designed for continuous operation in harsh industrial environments
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Reduced maintenance frequency compared with mechanical or optical switches
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Stable and repeatable output signals for PLC and control systems
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Independent of conductivity, dielectric constant, or flow conditions
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Proven performance across multiple industrial applications
By focusing on lifecycle stability rather than short-term cost, this solution helps reduce operational risk and total cost of ownership.
Liquid Level Switches Description
Tuning Fork Level Switch Engineering & Technical Selection
Measurement Principle
The tuning fork level switch uses a piezoelectric resonant system. Under free vibration, the fork oscillates at a fixed frequency. When material contacts the fork, vibration amplitude and frequency change due to damping, triggering a stable switching signal.
Accuracy & Reliability
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Resonance-based detection ensures consistent switching behavior
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Adjustable delay time prevents false alarms during filling or discharge
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Suitable for variable process conditions without recalibration
Output & Integration
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Relay output compatible with standard industrial control systems
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LED indicators display fork vibration and output status, simplifying commissioning
Installation Considerations
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Threaded or flanged mounting options
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Rod length selectable to match tank, silo, or pipeline geometry
Tuning Fork Level Switch Applications & Industry Solutions
Water & Wastewater Treatment
Used for high and low level protection in tanks, channels, and treatment units where flow and turbulence are present.
Chemical Processing
Reliable point level detection in aggressive or variable media, independent of electrical properties.
Food & Bulk Material Handling
Suitable for powders and granular solids in silos and hoppers, supporting automated material control.
Oil & Gas & Energy
Applied in auxiliary systems and process vessels where stable switching and safety are critical.
OEM Equipment Integration
Commonly integrated into packaged skids, tanks, and process equipment for standardized level control.
Liquid Level Switches Parameter
Tuning Fork Level Switch Technical Specifications
| Parameter | Specification |
|---|---|
| Applicable Media | Liquid, Powder, Particle |
| Rod Length | Standard 250 mm; optional 100–3000 mm |
| Rod Material | SS304, SS316L |
| Medium Temperature | –40 ℃ to +130 ℃ |
| Ambient Temperature | –20 ℃ to +70 ℃ |
| Working Pressure | ≤ 2.5 MPa |
| Medium Density | Particle ≥ 0.1 g/cm³; Liquid ≥ 0.7 g/cm³ |
| Particle Diameter | ≤ 10 mm |
| Signal Output | Relay output, 3A / 220 VAC |
| Delay Time | 1–60 s adjustable |
| Process Connection | G1″, G3/4″ thread or flange (customizable) |
| Enclosure Rating | IP65 |
Instrava OEM/ODM
Tailored Sourcing & Customization: Getting You the Exact Product You Need
As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.
Finding the right product in a massive supply chain can be challenging. That is where we step in.
As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.
How We Customize to Fit Your Procurement Needs
For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.
For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.
For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.
Why Partner with Us for Custom Sourcing?
One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.
Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.
Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.
What applications are tuning fork level switches suitable for?
Tuning fork level switches are commonly used for point level detection in tanks, silos, and pipelines handling liquids, powders, and granular solids. They are suitable for industrial processes where stable switching is required regardless of flow or material properties.
How does a tuning fork level switch work in industrial processes?
The switch operates based on vibration resonance. When material contacts the tuning fork, vibration amplitude and frequency change due to damping, which is detected by internal electronics and converted into a reliable switching signal.
Can this tuning fork level switch be used for both liquids and solids?
Yes. This tuning fork level switch is designed for use with liquids, powders, and particulate solids, provided the minimum density requirements are met, making it suitable for multi-process industrial environments.
Is the tuning fork level switch affected by flow, bubbles, or conductivity?
No. The resonance-based measurement principle ensures stable operation independent of flow conditions, bubbles, turbulence, conductivity, or dielectric constant of the medium.
What customization options are available for this tuning fork level switch?
Customization options include rod length, wetted material selection, process connection type, output configuration, and delay time settings to match specific installation and application requirements.
Is this tuning fork level switch suitable for OEM and long-term projects?
Yes. Instrava provides engineering support, OEM/ODM services, and long-term supply stability, making this tuning fork level switch suitable for standardized equipment and multi-site industrial projects.
Why Trust Instrava?
We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.
Our very existence depends on helping you source the products that are the perfect fit for your needs.
Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.
We help you avoid intermediaries posing as factories.
We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.
Our multilingual team ensures effective communication.
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Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.
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