High Performance Ultrasonic Level Meter with Two / Three / Four Wires of Compact Version
1. Application:
The series is an compact 2-wire series ultrasonic level meter for continuous non-contact level measurement in liquids and solids. It consists of probe and electronic units, both of which are leak-proof structure. This series can be widely applied to the metallurgical, chemical, electricity and oil industries.
2. Characteristics:
1) Compact continuous non-contact level measurement;
2) The design, easy to install;
3) Over volt, over current protection, lightning protection;
4) LCD or LED large display window, easy to debug and observe;
5) Strong anti-jamming ability;
6) 4-20mA output;
7) Intelligent signal processing technology to ensure that the instrument meets a variety of work occasions
8) All-metal housing (IP67), sealed, alkali resistant to harsh environments.
3. Measuring principle: Time-of-flight method
The level gauge is composed of an ultrasonic probe and an electronic tube. The unit level meter is installed on the top of the container. Under the control of the electronic device, the ultrasonic probe transmits ultrasonic pulses to the subject. The sound wave is reflected by the surface of the object, and part of the echo received by the detector is converted into an electrical signal
The signal meter measures the time between pulse transmission and reception. The time is proportional to the distance between the probe and the measured object. The electronic device detects this time and calculates the measured distance based on the known speed of sound. The level value can be obtained by subtraction.
H: installation height
D: distance value
L: level value
B: blacking distance
F: full scale
4. Technical data:
Basic data
| Type | MLT |
| Power supply | DC24V (±10%) 60mA |
| Display | 4 digit LCD |
| Accuracy | 0.2% of full span (in air) |
| Output current | 4-20mA |
| Output load | 0-500Ω |
| Temperature range | -40℃~80℃ |
| Pressure range | ±0.1MP (press definitely) |
| Measure cycle | 1 second (changeable ) |
| Beam angle | 8º(3db) for range :4m 6m 8m 5º(3db) for range :12m 15m 20m 30m |
| Parameter set up | 3 induction buttons |
| Cable connection | PG13.5 |
| Material | The electronic unit : metal The sensor: ABS |
| Protect grade | IP67 |
| Fix | Screw or Flange |
| MODEL | MLT4 | MLT6 | MLT8 | MLT12 | MLT15 | MLT20 | MLT30 |
| LIQUID | 4.00m | 6.00m | 8.00m | 12.00m | 15.00m | 20.00m | 30.00m |
| SOLID | | | 3.00m | 5.00m | 7.00m | 10.00m | 15.00 |
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:
| MODEL | MLT4 | MLT6 | MLT8 | MLT12 | MLT15 | MLT20 | MLT30 |
| Blacking distance | 0.20m | 0.25m | 0.30m | 0.45m | 0.60m | 0.80m | 1.20m |
