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Interruptores de nivel
Interruptor de nivel de admitancia de RF
Reliable level detection for sticky, coating, and difficult materials in industrial processes
Designed to eliminate false alarms caused by material adhesion
Active guard technology for stable and accurate switching
Suitable for powders, particles, liquids, and viscous materials
Industrial-grade design for harsh and hazardous environments
OEM / ODM configuration available for project-based integration
A proven solution for applications where capacitive and mechanical level switches fail.
Procurement & Risk-Reduction Perspective
In many industrial applications, level switches fail not because of poor quality, but because material adhesion and coating interfere with measurement. Traditional capacitive or mechanical switches often require frequent cleaning, recalibration, or replacement.
Instrava RF admittance level switch is designed to address these challenges:
Eliminates false measurement caused by material buildup on the probe
No moving parts, no mechanical wear, and minimal maintenance
Stable output even with fluctuating material levels
Reduced maintenance frequency lowers lifecycle cost
Suitable for continuous operation in harsh industrial environments
This makes RF admittance technology a preferred choice for critical and difficult applications, not just an alternative option.
Liquid Level Switch Description
RF Admittance Level Switch Key Technology & Performance
Measurement Principle (RF Admittance Technology)
RF admittance level control measures the admittance of the medium using high-frequency radio waves. Unlike conventional capacitive technology, RF admittance uses a three-electrode system consisting of a measurement electrode, shield (guard) electrode, and ground electrode.
Why It Matters
The active guard electrode isolates the measurement signal from material adhesion
Changes in impedance, capacitive reactance, and inductive reactance are processed together
Stable measurement even when material coats the probe surface
Signal Stability & Reliability
Built-in signal processing compares real-time signals with reference values
Adjustable switching delay (0–30 s) filters out short-term fluctuations
Reliable relay output ensures accurate level detection
RF Admittance Level Switch Applications & Industry Solutions
Cement, Fly Ash & Building Materials
Ideal for silos handling cement, fly ash, and fine powders where material buildup and dust are common.
Chemical & Petrochemical Processing
Reliable level detection for powders, granules, and viscous materials with changing dielectric properties.
Food & Pharmaceutical Ingredients
Suitable for sticky or coating materials where hygiene and measurement stability are critical.
Power, Energy & Environmental Systems
Applied in ash handling, dust collection, and material storage systems requiring stable and low-maintenance operation.
OEM Equipment Integration
Widely used in reactors, hoppers, and packaged systems where false alarms must be avoided.
Liquid Level Switch Parameter
RF Admittance Level Switch Technical Specifications
| Parámetro | Especificación |
|---|---|
| Applicable Media | Powder, Particle, Liquid, Viscous materials |
| Probe Material | SS304, SS316L, etc. |
| Probe Pressure | Max 5.0 MPa |
| Sensitivity | 0.5 pF |
| Material Temperature | –184 to +350 ℃ |
| Temperatura ambiente | –40 to +80 ℃ |
| Switching Delay | Adjustable, 0–30 s |
| Mounting Interface | 1″ NPT, 3/4″ NPT or custom flange |
| Interfaz eléctrica | M20 × 1.5, 1/2″ NPT |
| Working Power | 220 VAC, 24 VDC |
| Tipo de alarma | Upper or lower limit (optional) |
| Señal de salida | Relay output |
| Contact Form | SPDT (1 SPDT) |
| Contact Capacity | 220 VAC / 5 A |
| Consumo de energía | ≤ 2.5 W |
| Protection Grade | IP65 |
| Explosion-Proof Rating | Exia II CT5 Ga, Exid II CT5 Gb |
Instrava OEM/ODM
Instrava Engineering & Customization Support
At Instrava, our instruments are developed with a strong focus on real industrial applications. Each product is designed to operate as a reliable component within measurement, control, and automation systems, rather than as a standalone device.
Our engineering team supports customers during product selection by evaluating process conditions, operating environments, and system requirements, ensuring stable and long-term performance in actual use.
In addition to standard configurations, Instrava offers flexible customization options, including measurement range, materials, output signals, communication interfaces, and installation methods. All custom solutions are engineered to meet industrial standards and application-specific demands.
We also support OEM projects and system integration, providing consistent product design, technical documentation, and long-term supply to ensure smooth integration and reliable operation throughout the project lifecycle.
Recomendaciones de productos relacionados
RF admittance level switches use three-electrode technology with an active guard electrode, which compensates for material buildup on the probe. This prevents false switching caused by adhesion or coating—a common limitation of traditional capacitive level switches.
Yes. RF admittance technology is specifically designed for sticky, viscous, and coating materials. The circuit automatically corrects signal changes caused by material adhesion, ensuring stable and repeatable switching without frequent cleaning.
RF admittance level switches can detect powders, granules, liquids, viscous media, and both conductive and non-conductive materials, making them suitable for diverse industrial processes.
The active shield electrode isolates the measurement signal from coating effects. Combined impedance, capacitive reactance, and inductive reactance are analyzed together, allowing the switch to ignore material buildup on the probe surface.
No regular maintenance is required. The non-mechanical design eliminates wear, and the anti-adhesion function prevents probe fouling from affecting performance.
Yes. Explosion-proof versions are available with certifications such as Exia II CT5 Ga and Exid II CT5 Gb, suitable for hazardous industrial environments.
Por qué elegir Instrava
Al elegir Instrava, obtiene un socio con un profundo conocimiento de las aplicaciones industriales y la experiencia necesaria para hacer frente a los retos operativos actuales.
Nuestro papel va más allá de los productos: respaldamos su éxito con soluciones fiables y un compromiso a largo plazo.
Innovación impulsada por la ingeniería
La innovación en Instrava se guía por necesidades industriales reales. Perfeccionamos continuamente nuestras tecnologías para hacer frente a los cambiantes retos operativos, garantizando un rendimiento práctico y fiable en entornos exigentes.
Personalización específica de la aplicación
Ofrecemos personalización a nivel de ingeniería para adaptarnos a las condiciones específicas del proceso. Desde el rango de medición y los materiales hasta las señales de salida y las opciones de instalación, nuestras soluciones están configuradas para adaptarse a aplicaciones reales.
Calidad y fiabilidad demostradas
La calidad y la fiabilidad son fundamentales en todos los productos Instrava. Fabricados bajo estrictos controles de calidad y sometidos a pruebas exhaustivas, nuestros instrumentos ofrecen un rendimiento preciso, estable y a largo plazo.
Capacidad global con apoyo local
Instrava combina la experiencia mundial en ingeniería con una asistencia local receptiva, lo que garantiza que nuestros socios se beneficien de una tecnología alineada internacionalmente y de un servicio regional puntual.
Amplia cartera de productos
Nuestra amplia cartera de instrumentos de medición y control nos permite dar respuesta a una amplia gama de necesidades industriales, proporcionando soluciones integradas a partir de una fuente única y fiable.
Asistencia técnica orientada a los socios
Trabajamos en estrecha colaboración con nuestros socios, desde el asesoramiento técnico hasta la asistencia posventa. Nos centramos en ofrecer soluciones que generen un valor duradero y contribuyan al éxito operativo a largo plazo.
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