Industrial capacitive liquid level transmitter with RS485 interface, used for monitoring water and fuel tanks / water and fuel liquid levels, RS485 output

The Industrial Capacitive Liquid Level Transmitter is a high-precision monitoring device designed for continuous level measurement in water and fuel tanks. Utilizing advanced capacitive sensing technology, this transmitter delivers reliable, non-contact or direct-contact measurement without moving parts, ensuring long-term stability and low maintenance. Equipped with an RS485 communication interface supporting the Modbus RTU protocol, it enables seamless integration into industrial control systems, remote monitoring networks, and IoT platforms. The probe is constructed from corrosion-resistant materials such as PTFE and 316L stainless steel, making it suitable for harsh environments. With customizable probe lengths from 100mm to 2000mm and a wide DC 12–36V power supply range, this transmitter adapts to various tank depths and power conditions.

Key Features

• RS485 Modbus RTU output – Enables digital communication and easy integration with PLCs, SCADA, and data loggers

• Capacitive sensing principle – Provides high accuracy (±0.5% FS) and immunity to foam, vapor, and coating buildup

• Wide media compatibility – Works with water, diesel, fuel, hydraulic oil, and other non-corrosive to mildly corrosive liquids

• Durable materials – Features PTFE or 316L stainless steel probe, ideal for industrial and mobile applications

• Wide power supply range – Accepts DC 12–36V, suitable for fixed tanks and vehicle-mounted fuel systems

• Customizable probe length – From 100mm to over 2000mm to fit different tank sizes

• High protection rating – IP67 / IP68 available, resistant to moisture, dust, and temporary submersion

• Temperature compensation – Ensures stable readings even with varying liquid temperatures

Applications

• Industrial fuel tank monitoring – Diesel and gasoline storage tanks in generators, compressors, and boilers

• Water tank level control – Potable water, wastewater, and industrial water tanks in factories and buildings

• Marine and heavy-duty vehicles – Fuel and freshwater tanks on ships, trucks, construction equipment, and agricultural machinery

• Oil and hydraulic systems – Hydraulic oil reservoirs, lubricating oil tanks, and diesel day tanks

• Remote monitoring systems – Integrated with RS485 networks for centralized level monitoring in tank farms and chemical plants