Ultrasonic Fuel Level Sensor with Bluetooth, RS232/RS485/0-5V

This ultrasonic fuel level sensor represents the next generation in non-contact liquid level measurement. It employs an ultrasonic transducer attached externally to the tank bottom, sending signals that reflect at the liquid-air interface to calculate precise level height. This innovative design requires no tank modification, preserving integrity and avoiding potential warranty issues. The level sensor combines robust construction with intelligent features, offering multiple data interfaces for seamless integration into diverse monitoring systems.

Specification

Feature

• External Mounting Design: This ultrasonic fuel level sensor installs by simply adhering to the exterior tank bottom, ensuring a completely non-invasive setup that protects the tank and simplifies maintenance.
• Robust & Durable Construction: Featuring a high-grade engineering plastic shell and cable, this ultrasonic fuel tank level sensor is built to resist corrosion, high-impact forces, and extreme temperatures from -40°C to 85°C, ensuring long-term reliability.
• Versatile Multi-Interface Output: The ultrasonic fuel level sensor provides flexible connectivity with simultaneous RS232 (default) / RS485 serial, 0-5V analog output, and Bluetooth BLE 5.0, allowing compatibility with a wide array of host devices and protocols.
• High Performance & Intelligence: Delivering 0.1mm resolution and 99.5% accuracy, this ultrasonic level sensor incorporates an AI algorithm to filter out noise and interference from sloshing or vibration, providing stable data without relying on platform-side filtering.
• User-Friendly Configuration: Equipped with built-in Bluetooth, this ultrasonic level sensor for diesel tank pairs with a dedicated mobile app for easy installation guidance, real-time data viewing, protocol selection, and tank calibration.

Dimension

Wiring Diagram

Application

Monitoring of fuel tank consumption for various vehicles

Oil level monitoring for tank truck tank bodies

Tips: How does an Ultrasonic Fuel Level Sensor Work?

The ultrasonic oil tank level sensoroperates on a precise echo-ranging principle. It is mounted externally to the tank bottom, transmitting high-frequency ultrasonic pulses through the tank wall. These sound waves travel through the air space until they strike the liquid surface, where the significant density difference causes them to reflect back to the sensor.

The core measurement is the Time of Flight (ToF)—the interval between pulse emission and echo reception. Using the known speed of sound (compensated for temperature), the ultrasonic fuel sender calculates the distance to the liquid surface with the formula: Distance = (Speed of Sound × Time of Flight) / 2. This "air gap" measurement is then converted into accurate liquid level height based on the tank's calibrated dimensions.

The raw level data is processed by the sensor's built-in AI algorithm to filter out noise from sloshing, vibration, and temperature variations. The stabilized reading is then output simultaneously via multiple interfaces: RS232/RS485 for data loggers, 0-5V analog for gauges, and Bluetooth for mobile monitoring—all without compromising the tank's integrity through invasive installation.