Ultrasonic Level Sensor

The Ultrasonic Level Transmitter works based on ultrasonic level measuring principles, transmitting high-frequency sound waves to the surface of the fluid and determining the time taken for its return echo.

Aimed at non-contact level measurement, the instrument prevents any contact with the medium and, thus, decreases the need for maintenance and mechanical wear.

It is a dependable ultrasonic transmitter, which can be used for wastewater, aggressive and sanitary purposes.

With built-in temperature compensation, the ultrasonic level transmitter ensures accurate measurements despite varying process conditions.

• Non-contact ultrasonic level measurement.
• No moving parts for maintenance-free operation.
• Accurate and reliable sensing method.
• Ideal for difficult fluids where contact with the media is not desirable.
• Low installation and commissioning cost.
• Minimal maintenance requirements.
• Easy installation and user-friendly operation.
• Suitable for open tanks, wells, reservoirs, and groundwater applications.

• Measuring Range: 0.3–5 m, 0.3–8 m, 0.5–10 m, 0.7–20 m, 1–30 m
• Operating Temperature: -10°C to 75°C
• Dead Band: <0.3 m
• Launch Angle: 12° Minimum
• Application: Open Tanks, Wells, Groundwater & Reservoir Tanks

Generation of Ultrasonic Pulsing

The Ultrasonic Level Sensor is mounted above the material surface within the tank. The transducer of the sensor emits sound waves towards the bottom without any physical contact with the medium.

Reflection of Echo Signal

When the ultrasonic wave comes across the surface of the material being filled in the tank, then it bounces back to the sensor as an echo signal. This echo signal helps the sensor in measuring the distance between the material surface and the sensor.

Measurement of Time-of-Flight

By using the internal electronics, the time required for the emission of ultrasonic sound waves and receiving of the echo signal is measured. The distance is then measured from the speed of sound using the temperature compensation technique.

Measurement of Liquid Level

This distance is used to find the actual level of the material in the tank according to the height of the tank.

Measurement Ranges

• Standard Range Options: 5 Meters, 10 Meters, 15 Meters, 20 Meters

Power Supply

• DC Input: 24 VDC
• AC Input: 220 VAC

Output Signals

• Analog Output: 4-20 mA

• Digital Communication: RS485 Modbus
• Relay Output: 2 SPDT Relays

Enclosure & Protection

• Display Interface: LCD Display

• Ingress Protection: IP65 / IP66
• Material Housing: ABS Plastic

Prevent Liquid Contamination: The non-contact sensing principle does not come into contact with the process material, which prevents contamination and ensures the quality of the product.

Efficient Operation in Sewage Applications: An ultrasonic level transmitter for sewage tanks has been developed to operate in harsh environments by minimizing the impact of surface foam and turbulence.

Convenient Monitoring and Configuring on Site: The ultrasonic level sensor with an LCD display makes it possible to monitor the levels and configure the device right where it is installed.

Suitable for Process Integration: There are output options available for integration into a plant monitoring and control system.