Coating-Resistant & Corrosion-Proof: Soway SFC5 RF Admittance Level Sensor Tames Aggressive Liquids and Abrasive Slurries

In chemical plants, pharmaceutical reactors, paper mills and wastewater stations, the level loop is only as good as the probe’s ability to survive the product. Strong acids, caustic brine, sodium hypochlorite or sand-laden slurries attack sensors on two fronts: they corrode the metal and build a rock-hard crust that fools conventional capacitance or RF devices. Shenzhen Soway Tech’s SFC5 RF Admittance Level Sensor is engineered for this double threat—combining corrosion-resistant materials with an advanced coating-suppression algorithm to deliver a stable, maintenance-free signal over years of service.

Material first: survive the chemistry, then talk accuracy

Each SFC5 probe is built from high-grade stainless steel for mechanical strength and chemical resistance. For more demanding media, optional fluoropolymer or special-alloy protective coatings can be specified to withstand a wide pH range. The smooth probe surface minimizes adhesion and makes routine cleaning unnecessary even in viscous or crystallizing media.

RF Admittance technology: making coatings invisible

Soway’s RF Admittance technology simultaneously measures both capacitive and resistive components of admittance, allowing the system to distinguish between true level changes and false signals caused by build-up on the probe. The result is reliable level detection even when the sensor is partially coated with product residues—a common failure point for traditional capacitance sensors.

One part, many duties

Designed for liquids, slurries, and viscous materials, the SFC5 can be configured for a wide range of tank geometries and process conditions. Typical operating limits cover extended temperature and pressure ranges, making it suitable for everything from chilled brine to heated process liquids. Multiple output formats—including analog (4-20 mA or voltage) and digital (RS-485/Modbus)—ensure easy integration with PLC or DCS systems. A simple push-button teach-in routine allows quick setup without emptying the vessel. For demanding wash-down or hazardous applications, high ingress-protection and explosion-proof versions are available.

Proof in the field

Chemical storage: SFC5 sensors have shown stable readings in acid and alkali storage tanks where conventional probes required frequent replacement.

Water treatment: In abrasive and coating-prone sludge tanks, RF Admittance technology reduces false trips and maintenance intervals.

Paper & pulp: In fibrous and mineral-filled white water, the robust construction provides consistent measurement under constant agitation.

Install it, teach it, forget it

When corrosion, abrasion and coating combine to challenge every other level technology, the Soway SFC5 RF Admittance Level Sensor keeps the signal honest and the plant running—reliably and efficiently.