Ultrasonic Level Transmitter

Product Overview:
In industrial process control, accurate and reliable liquid level measurement is critical. Precise measurement of large storage tank inventory, sewage tank levels, river water levels, and container water tanks is essential for safety, efficiency, and cost-effectiveness. Among today's numerous liquid level measurement technologies, ultrasonic level transmitters stand out for their versatility, reliability, and non-contact operation. Ultrasonic level transmitters are primarily used for continuous, non-contact measurement of liquid levels in industrial storage tanks, sewage pits, diesel containers, and similar applications. The liquid must not contain foam, vapor, mist, or similar impurities.

Measurement Principle:
The ultrasonic level gauge consists of an integrated ultrasonic transducer and electronic unit. Mounted atop the container, the transducer emits ultrasonic pulses toward the target surface under electronic control. These pulses reflect off the surface, with partial echoes received by the transducer and converted into electrical signals. The time elapsed from pulse emission to re-reception is directly proportional to the distance between the probe and the measured object. The electronic unit detects this time and calculates the distance based on the known speed of sound. The liquid level value is then derived through subtraction.
The propagation speed of ultrasonic waves in gas is affected by gas temperature. Therefore, the level gauge must detect gas temperature during operation and compensate for the speed of sound to ensure measurement accuracy. When the level gauge emits an ultrasonic pulse, it cannot simultaneously detect the reflected echo. This is because the emitted pulse has a certain time width, and residual vibration persists after emission. During this period, the reflected echo cannot be detected, resulting in a small distance starting from the probe surface downward that cannot be properly measured. This distance is referred to as the dead zone.

Technical Advantages:
•Non-contact measurement
Ultrasonic Level Meters are a non-contact measurement technology. Measurements can be made without direct contact with the liquid，Suitable for various liquids, including corrosive liquids or high temperature and high pressure liquids.
•High precision and reliability
Ultrasonic Level Transmitters provide highly accurate measurement capabilities. Millimeter-level resolution can be achieved.
They generally have stable performance and reliable measurement results. Suitable for application scenarios requiring high precision. Such as industrial process control or environmental monitoring.
•Wide applicability
Ultrasonic Level Transmitters are suitable for a variety of liquids and container types. Including large storage tanks, small tanks, pools, rivers, etc.
They can be used for liquid level monitoring in a variety of industries including chemical, water treatment, food processing, pharmaceuticals, oil and gas, and more.
•Long distance measurement
Ultrasonic Level Transmitters enable long-distance measurements. Can be used for liquid level monitoring in tall or deep wells.

Technical Specifications：

Application scenarios:

Precautions:
The sensor of the ultrasonic level gauge should be installed in locations free from vibration, waves, foam, dust, smoke, water vapor, and strong electromagnetic interference whenever possible.
The selected installation location should facilitate construction, observation, and maintenance.
Ensure the sensor is installed vertically aligned with the object surface.
For open containers, position the sensor above the container rim or feed inlet whenever conditions permit to prevent sensor submersion and erroneous signal output.
For outdoor or field installations, provide sunshade and rain protection.
Avoid installing the sensor directly below discharge ports or other areas with severe surface turbulence.
If tank or vessel walls are rough, position the sensor as far as possible from the wall surface.
Ensure electrical conduits and cable protection tubes are sealed to prevent water ingress.