RF Admittance Switch

AIPUXin: Your Professional RF Admittance Switch Supplier!

Shandong AIPUXin Automation Instrument Co., Ltd. specializes in the development, design, and production of intelligent automation sensors. As market demands change, our company has developed RF capacitive liquid level switches, magnetostrictive liquid level transmitters, RF capacitive liquid level transmitters, microwave material level switches, radar liquid level transmitters, tuning fork density meter series products, etc. We have been working hard to create first-class products and become a first-class enterprise.

Our Advantages

Professional Production Equipment

Our modern factory is equipped with advanced CNC lathes, Mounters, oscilloscopes, sandblasting machines, argon arc welding machines, Ammeter, computer wire stripping machines, high-temperature test boxes, etc.

Continuous Product Innovation

Our company continues to innovate products, has more than 200 products, and has obtained more than 80 patents. CE certification, ISO9001, SIL certificates, etc., which enhance the credibility of our products and improve their competitiveness.

Strict Quality Inspection

Our R&D, design, and production strictly comply with international standards, and each process has strict operating procedures. More than 30 sets of testing and processing equipment help ensure product quality.

24-Hour Service System

The professional service team can quickly solve the problems users encounter and also provide customers with lifelong technical services. Video tracking services and emails make it easy for us to communicate with our customers on the fly.

Introduction to RF Admittance Switch

The RF admittance level switch meter is a general-purpose level meter for continuous level measurement. The product is used in industrial and mining sites and is suitable for most applications. The instrument consists of a circuit unit, a set of explosion-proof housing, and rod or cable sensing.

Advantages of RF Admittance Switch

Versatility

RF admittance switches can be used to detect the level of various liquids, solids, powders, and granular materials. They are suitable for a wide range of applications in industries such as food and beverage, pharmaceuticals, chemicals, water and wastewater, and more.

Non-Contact Sensing

RF admittance switches provide non-contact level sensing, which means they do not require physical contact with the material being measured. This makes them ideal for applications where contact sensors may be impractical or prone to contamination or damage.

Simple Installation

RF admittance switches are generally easy to install and set up. They can be mounted externally on the side of a tank or vessel, eliminating the need for complex modifications or intrusive probes. This simplifies installation and reduces maintenance requirements.

Wide Sensing Range

RF admittance switches offer a wide sensing range, allowing them to detect levels from very low to high. They can be used for both point level detection (detecting when the level reaches a specific point) and continuous level measurement.

Insensitive to Material Properties

RF admittance switches are relatively insensitive to changes in material properties such as dielectric constant, density, conductivity, or temperature. This makes them suitable for measuring a wide range of materials with varying characteristics.

Solid-State Technology

RF admittance switches utilize solid-state electronic components, which enhance their durability and reliability. They have no moving parts, reducing the risk of mechanical failures and minimizing maintenance requirements.

Application of RF Admittance Switch

RF admittance level sensor switches are utilized in a wide range of industries and applications where precise level monitoring is crucial. Some common applications include:

Capacitive liquid level sensing instrument

Liquid Storage and Processing

These switches are extensively used in industries such as chemical, pharmaceutical, food and beverage, and water treatment. They provide accurate level measurement for inventory management, process control, and preventing overflow or dry running of pumps.

Capacitive liquid level detection instrument

Bulk Solids Monitoring

RF admittance level sensor switches are highly effective in measuring the level of bulk solids, such as powders, granules, and grains. They ensure efficient material handling, prevent bin overflows, and control inventory levels in industries like mining, agriculture, plastics, and construction.

Non contact capacitive liquid level sensor

Silos and Hoppers

Silos and hoppers often require precise level monitoring to ensure consistent material supply and prevent blockages or overflow. RF admittance level sensor switches offer reliable measurement and can activate alarms or control mechanisms to optimize material flow.

Liquids with Varying Conductivity

These switches are suitable for liquids with varying conductivity or dielectric constants, such as oils, slurries, and emulsions. They can provide accurate level measurement even in challenging conditions, ensuring proper process control and preventing costly errors.

Working Principle of RF Admittance Switch

The RF admittance level controller is based on radio frequency (RF) capacitor technology. A radio frequency is applied to the probe and continuous analysis determines the effects caused by the surrounding environment. The energized probe and the container wall form the two pole plates of the capacitor. The insulator of the probe and the surrounding air become dielectric materials. All materials have a dielectric constant that is greater than air. When air is replaced by any other material, the capacitance effect is strengthened, which changes the impedance of the application, that is, the change in capacitance causes a change in impedance. This effect is measured by the circuit and compared with a reference established by the sensitivity setting (circuit).
The so-called radio frequency admittance means the inverse of the impedance in electricity. It is composed of resistive components, capacitive components, and inductive components, and radio frequency is the high-frequency radio spectrum. Therefore, radio frequency admittance can be understood as the use of high frequency. Radio waves measure admittance. When the meter is working, the sensor of the meter forms an admittance value with the filling wall and the measured medium. When the material level changes, the admittance value changes accordingly, and the circuit unit converts the measured admittance value into a level signal output to realize the level measurement.

Installation Tips for RF Admittance Switch

The installation position of the sensing element (probe) is usually determined by the position of the opening of the container, but it should not be installed in the feed stream. When there is no suitable position inside the container, consider using the outside arm or graduated cylinder installation. When the sensor is installed on the side wall, the protective electrode should enter the container and hang through the side wall, so please pay attention to the length of the protective electrode when selecting the type. In order to make the device work properly and accurately, please install it according to the following steps:
● In the case of insulating sensors, the installation must be very careful, because in this case, it is possible to damage the insulation of the probe, especially the thin capacitive probe.
● The sensing element should not be installed so that it is in the direct flow of material from the filling nozzle or tank. If this is not possible, add a baffle between the probe and the fill.
● Do not disassemble the sensor or loosen the mounting seal.
● Tighten the sensing element with the flat part of the wrench.
● The shielding layer must pass through the tank wall when the probe is installed.

Notice:
Do not use one-component ambient vulcanized sealants for probes or instrument enclosures, which often contain acetic acid, which will corrode circuit components. A special two-component sealant (non-corrosive) should be used, please consult the manufacturer on which two-component sealant to use.

Factors to Consider Before Choosing an RF Admittance Switch

01/

Application and Material
Understand the nature of the material you need to measure. Determine if it's a liquid, solid, powder, or granular material. Consider the material's dielectric constant, conductivity, and other properties that may affect the performance of the RF admittance switch.

02/

Sensing Range
Determine the required sensing range for your application. Consider the minimum and maximum levels that need to be detected. Ensure that the RF admittance switch has a suitable sensing range to cover the desired level range.

03/

Mounting Configuration
Consider the mounting configuration that best suits your application. RF admittance switches can typically be mounted externally on the side of a tank or vessel, but some applications may require special mounting considerations. Evaluate the available space and the accessibility for installation.

04/

Process Conditions
Assess the environmental and process conditions in which the RF admittance switch will operate. Consider factors such as temperature extremes, pressure variations, corrosive atmospheres, and potential mechanical impact. Choose an RF admittance switch that is designed to withstand these conditions.

05/

Sensitivity and Accuracy
Evaluate the required sensitivity and accuracy for your level measurement. Determine if the RF admittance switch can detect small changes in level and provide the level resolution needed for your application. Consider the accuracy requirements for your process control or monitoring.

06/

Output and Communication Options
Consider the desired output and communication options for integrating the RF admittance switch into your control system. Ensure that the switch provides the necessary output compatibility for seamless integration.

Our Certificate

3A certification, CE certification, ISO9001, SIL certificate, explosion-proof certificate, etc. prove our company's professional strength and the high quality of our products.

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Our Factory

Our company was established on July 9, 2012, located at No. 106-108, Building 4, 11th Street, Block B, Haode Trade City (Anju), with an existing plant area of 3000 square meters. Professional production equipment and employees continuously promote product innovation and optimization.

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Ultimate FAQ Guide to RF Admittance Switch

Q: How does the RF level switch work?

A: The signal provided to the shield section is maintained constant by use of a compensating circuit in the Electronic Controller while the signal applied to the active section varies with the change of media between the probe and the vessel shell.

Q: What is the RF level measurement?

A: RF level switches are used to measure the level of a liquid or bulk solid material (as well as slurries) within a specified space. They are designed to measure point level readings. Point level switches provide output when a specific level measurement is reached.

Q: What is the difference between a level switch and a level transmitter?

A: A level transmitter is perfect for a condition where the exact level of fluid needs to be measured. This is usually preferred for applications where precise measurement becomes a necessity. A level switch is an ideal choice for applications where extremely low or high levels need to be measured.

Q: How do RF capacitance level sensors work?

A: Capacitance is formed between the level sensing probe and metallic wall of the vessel which act as two electrodes, and the application media acts as a dielectric medium when the sensor is introduced into the vessel. These electrodes are separated by an insulator by suitable media like solid and liquid known as a dielectric medium. The dielectric is the main factor in the capacitance principle as its value will be influenced by the temperature and moisture content of the operating material. When the level of process material rises, the value of dielectric changes which results in a change in the value of capacitance between the level sensing probe and the vessel wall. This change can be detected and measured by the Radio Frequency technique. These RF signals are interpreted by the evaluation unit and it converts these signals into a relay output signals. RF current flowing in the capacitor helps the electronics detect the presence of application media.

Q: What are the advantages of RF admittance?

A: High Cost-Effectiveness
The strong functionality and relatively low price of the product make it more cost-effective compared to similar instruments and meters
Minimal Measurement Error
Due to the fact that the radio frequency admittance level switch is not affected by hanging materials and environmental changes, its measurement results are more accurate. Moreover, the components of the radio frequency admittance level switch have no moving parts during the measurement process, so there is no mechanical damage. This makes the radio frequency admittance level switch unnecessary for regular maintenance, high accuracy, and long service life.
Wide Universality
The radio frequency admittance material level switch can withstand high temperature, corrosion, explosion-proof, anti hanging, material impact, friction, and is easy to maintain. This product is widely used in the measurement of coal ash, solid particles, and adhesive materials in petrochemical industry, power plant dust removal and ash hopper, storage bin, and measurement of coal ash.

Q: What is the difference between a float switch and a level switch?

A: A float switch is a device that uses a float, which rises and falls with the level of liquid, to activate a switch. The switch can be used to turn a pump on or off, for example. A level switch, on the other hand, uses a probe that is inserted into the liquid to detect the level of the liquid.

Q: What is the RF admittance level switch sensor sensitivity?

A: The correct sensitivity setting will affect the correct change of the sensor output. The anti-adhesion circuit of the probe can make the measurement circuit ignore the material accumulated on the probe, otherwise it will cause the failure of sensitivity. The anti-stick circuit is excited with the same radio frequency potential as applied to the sensing probe. Because the current cannot flow at the same potential, the anti-adhesion circuit blocks the current that usually flows from the energized probe through the accumulated material to the container wall. This measures the material surrounding the energized probe, not the accumulated material.

Q: What are the benefits of RF admittance level sensor switches?

A: Versatility
RF admittance level sensor switches are versatile and can be used for both liquids and solids. They can handle various materials with different electrical properties, making them suitable for diverse industrial applications.
Non-Intrusive Installation
These switches can be installed externally or inserted into the container, depending on the application requirements. Non-intrusive installation allows for easy retrofitting and minimizes the risk of contamination or damage to the material being measured.
Reliability and Durability
RF admittance level sensor switches are designed to withstand harsh environments, including high temperatures, pressure, and corrosive substances. They are built to be robust and reliable, reducing maintenance and ensuring long-term performance.
Cost-Effective Solution
With their accuracy, versatility, and durability, RF admittance level sensor switches offer a cost-effective solution for level monitoring. They help optimize processes, prevent material waste, and reduce downtime and maintenance costs.

Q: What are the RF admittance level sensor’s applications?

A: Power Plants: coal piles, raw coal bins, fuel bins, reservoirs, exhaust gas purification tanks, bin pumps, ash storage, fuel tanks, etc.
Chemical Industry: distillation tower, raw material and intermediate silo, reaction tank, ammonia tank, toxic liquid tank, solid silo, separator, etc.
Petrochemical: oil pipelines, distillation towers, concentration tanks, liquefied gas tanks, ammonia tanks, steam drums, oil refinery oil depots, electrical desorption interfaces, asphalt tanks, etc.
Water and Water Treatment: reservoirs, sewage tanks, water treatment tanks, sedimentation tanks, digestion towers, gas pipelines, deep wells, drinking water networks, etc.
Cement: Stone silos, raw meal silos, cement silos, coal powder silos, slag storage silos, etc.
Metallurgy: ore silo, ore crusher, raw material silo, auxiliary silo, blast furnace, alumina powder silo, electrolytic cell buffer tank, etc.
Oilfield: crude oil or product oil storage tanks, three-phase separators, sedimentation tanks, sewage tanks (pools) and oil-water interfaces, drilling mud tanks, etc.
Papermaking: raw material warehouse, storage tower, drying drum, etc.
Others: quarry, food, pharmaceutical, environmental protection, shipbuilding and other industries

Q: What parts does the RF Admittance Switch consist of?

A: The RF admittance level switch meter is a general-purpose level meter for continuous level measurement. The product is used in industrial and mining sites and is suitable for most applications. The instrument consists of a circuit unit, a set of explosion-proof housing and rod or cable sensing.

Q: Why RF source is used with capacitive level transducer?

A: The RF source is applied to measure and detect the change in admittance. The Evaluation Unit measures the change of admittance accurately by using the Radio Frequency ( R.F.)

Q: What are the three factors which will influence the capacitance of a capacitive transducer?

A: The capacitance of a capacitor is affected by the area of the plates, the distance between the plates, and the ability of the dielectric to support electrostatic forces.

Q: What is the admittance level measurement?

A: The admittance level measurement unit measures the admittance between a probe and the wall of the container. These switches are rugged and operate in tough industrial environments. They have an excellent immunity to product build-up and are ideal for a wide variety of applications from paper mills to power generation.

Q: What are RF sensors used for?

A: Radio Frequency sensors are clever devices that utilize radio waves to achieve diverse tasks: detecting objects, gauging temperature, monitoring pressure, and identifying motion. Their versatility spans various applications, from managing home automation systems to driving industrial processes.

Q: What types of substances can be detected using RF Admittance Switches?

A: RF Admittance Switches can be used to detect a wide range of substances, including liquids, solids, powders, and granular materials.

Q: Are RF Admittance Switches suitable for high-temperature applications?

A: RF admittance type level switch with the extremely high temperature durable probe can withstand up to 250°C throughout the process. Additionally, It detects the coating of viscous material over the level instruments.

Q: Can RF Admittance Switches be integrated with control systems?

A: RF-NRF admittance level sensors provide various output options, including analog signals (4-20mA, 0-10V) or digital signals (Modbus, HART), allowing for seamless integration with control systems and data acquisition devices.

Q: Do RF Admittance Switches require external power sources?

A: Yes, most models require an external power source for operation.

Shandong Aipuxin Automation Instrument Co., Ltd. is one of the most professional rf admittance switch manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale cheap rf admittance switch in stock here from our factory. For price consultation, contact us.

RF Admittance Level Sensor, RF Admittance Switch, Admittance Level Switch