Ultrasonic Level Meter with 10 / 20 / 30 Meter Distance RS485 Modbus Output

1. Application:

This series is an integrated two-wire ultrasonic liquid level meter continuous non-contact liquid level measurement of liquid and solid. It consists of a probe and an electronic device, both of which are leak-proof structure. This series of products can be widely used in metallurgical industry.

chemical, electricity.

2. Features:

1) Compact continuous non-contact liquid level measurement;

2) Body design, convenient installation;

3) Over voltage and over current protection, lightning protection;

4) LCD or LED large display window, easy to debug and observe;

5) Strong anti-interference ability;

6) 4-20mA output;

7) Intelligent signal processing technology to ensure that the instrument meets all kinds of workplaces

8) Full Metal Jacket (IP67), sealed, alkali-resistant, meeting the harsh environment.

3. Measuring principle: Time-of-flight method

Level meter consists of an ultrasonic probe and an electronic unit.Level meter is mounted on top of the container,under the control of the electronic unit, the ultrasonic probe transmitting ultrasonic pulses to the measured object.Sound waves are reflected by the surface of the object, part of the echo received by the probe and converted to electrical

signals.The meter measures the time between pulse transmission and reception. The time is proportional to the distance from the probe to the measured object. The electronic unit detects this time and calculates the measured distance based on the known sound velocity. Level value can be obtained by the subtraction.

H: installation height

D: distance value

L: level value

B: blacking distance

F: full scale

4. Technical data:

Basic data

Note: When using to measuring solid level, the most energy of ultrasonic is absorbed or scattered by solid level, so the back wave is very little, the valid measuring range of solid level is about 50% of liquid level. And the valid measuring range of solid level is determined by the installing location and rang.

The blacking distance: