SUP-ZP Ultrasonic Level Transmitter

• Introduction

SUP-ZP Ultrasonic Level Transmitter is a top-class device configured with an advanced ultrasonic transmitter and receiver for liquid and solid level measurement. It is a precise and easy-to-use equipment that handles with range of level measurement applications like drainage walls, common walls, underground waters, open tanks, rivers, pools,  and open pile material.

• Measuring principle

The core idea behind an ultrasonic level transmitter is straightforward: it emits sound waves, listens for their echo, and calculates the distance to the material’s surface based on the time it takes for the echo to return. Just as below:

1. Sending Sound Waves:

   • The transmitter has a transducer, a component that acts like a tiny speaker. It sends out ultrasonic pulses with high-frequency sound waves (typically 20 kHz to 200 kHz) that humans can’t hear.

2. The Echo Returns:

   • When these sound waves hit the surface of the material, like water, oil, or even gravel, they bounce back as an echo.
   • The same transducer (or sometimes a separate receiver) catches this reflected sound wave.

3. Converting the Echo:

   • The transducer contains a piezoelectric crystal or sometimes a magnetostrictive device, which turns the returning sound waves into an electrical signal. This crystal vibrates when struck by the echo, generating a small voltage that the device can detect.

4. Calculating the Distance:

   • The transmitter’s microprocessor measures the time it takes for the sound wave to travel to the surface and back. Since sound travels at a known speed (about 343 meters per second in air at room temperature), the device uses this time to calculate the distance to the surface.
   • The formula is: Distance = (Speed of Sound × Time) ÷ 2 (divided by 2 because the sound travels there and back).

5. Determining the Level:

   • The transmitter knows the total height of the tank (set during installation). By subtracting the distance to the surface from the tank’s height, it calculates the level of the material.
   • The device then sends this info to a display, control system, or computer, often as a 4-20 mA signal, digital output, or readable number.

• Specification

• Applications

• Application