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Liquid Level Sensors | SSI-Technologies, Inc.

Ultrasonic Liquid Level Sensors

Whatever your media, tank depth, and profile, SSI Technologies, Inc. most likely has an ultrasonic liquid level sensor for you.

Our ultrasonic liquid level sensors use ultrasonic technology to generate a high-frequency sound wave to measure the time for the echo to reflect off of the target and return to the ultrasonic liquid level sensor. The distance from the ultrasonic liquid level sensor to the fluid is then calculated based on the speed of sound and the profile programmed into the sensor.

Ultrasonic Comparison

TULC Sensor

SSI introduces our TULC Sensor, an in-tank combination sensor for accurate and reliable measurement of temperature, level, and fluid quality/concentration, optimal for urea tank applications.


The Fluid-trac™ cost-competitive fluid level sensor is ideal for tanks or storage containers that have a depth/height up to 32 inch (81.28cm); 24 inch (60.96cm) for gasoline.

Point Level Switch

The Fluid-Trac™ PLS (Point Level Sensor) may be used in any size tank or storage container to control up to three switch points within 32 inch (81.28cm); 24 inch (60.96cm) for gasoline.

Acu-Trac™ SMART 485

The Acu-Trac™ SMART sensors are for tanks or storage containers that have a depth/height up to 6.23 feet (1.9 meters) for gasoline and 8.2 feet (2.5 meters) for other media. These sensors provide various outputs & on-vehicle communications.


The Acu-Trac™ sensor is ideal for tanks or storage containers that have a depth/height up to 9.84 feet (3 meters). These sensors provide various outputs & off-vehicle communications.

Digital Fluid-Trac™

The Digital Fluid-Trac™ drum liquid level gauge is a cost competitive, non-contact continuous drum liquid level gauge. It is designed for use on vertical drums (≤ 32 inch depths) in storing a wide variety of media such as water, waste water, motor oil, hydraulic fluid and diesel fuel.