Basic Definition and Construction of RF Admittance Level Sensor

The RF Admittance Level Sensor from Shenzhen Soway Tech Limited (Soway) is a high-precision liquid level measurement device widely used in industrial automation, process control, and fluid monitoring applications. Unlike traditional capacitive sensors, RF admittance technology simultaneously measures both capacitance and resistance, effectively eliminating measurement errors caused by material buildup on the electrodes. This ensures accurate and reliable liquid level detection even in challenging industrial environments.

Soway’s RF Admittance Level Sensor is composed of three main components: the sensing probe, the electronic module, and the housing. Each component is carefully engineered to provide long-term stability, durability, and precision.

Sensing Probe

The sensor is available in Integrated Probe and Split Probe designs. The probes are designed to accurately detect a wide range of liquids, including water, oils, viscous substances, and chemical solutions, even in conditions where material buildup occurs. The split probe allows measurement in higher temperature environments, while the integrated probe is ideal for standard applications.

Electronic Module

The electronic module integrates a high-frequency RF oscillator, signal conditioning circuits, and a microcontroller. The oscillator generates a signal in the range of 15–400 kHz, which excites the probe for precise level measurement. The processed signal can be output as analog 0.5–4.5 V, 4–20 mA, or digital RS485 Modbus, depending on the user’s requirements. This flexibility allows seamless integration into various monitoring and control systems.

Housing and Seal

Soway’s RF Admittance Level Sensor is housed in a robust, corrosion-resistant enclosure designed to withstand harsh industrial conditions. The standard protection rating is IP65, with options for higher protection levels. The solid-state design, with no moving parts, ensures high impact resistance and minimal maintenance.

Advantages of Soway’s RF Admittance Level Sensor

High Accuracy: Dual measurement of capacitance and resistance compensates for electrode buildup.

Durable Design: No moving parts ensure long-term reliability and low maintenance.

Versatile Application: Suitable for water, oils, viscous liquids, and chemical solutions.

Flexible Integration: Multiple output options for analog and digital systems.

With its advanced RF admittance technology and robust construction, the SFC5 Series RF Admittance Level Sensor by Soway provides reliable, high-performance liquid level measurement and control solutions for industrial, chemical, and process automation applications.