2 Wire Ultrasonic Level Sensor with 24VDC or 220VAC Power Supply
1. Application:
The series is an integrated two-wire ultrasonic level meter
continuous contactless liquid level measurement of liquids and
solids. It consists of probes and electronic devices, 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) Integrated design, easy to install;
3) Over voltage, over current protection, lightning protection;
4) Large LCD or LED 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 various working occasions
8) Full metal shell (IP67), sealed, alkali resistance, and meet the
harsh environment.
3. Measuring principle: Time-of-flight method
The liquid level meter is composed of an ultrasonic probe and an
electronic tube. The unit level instrument is installed at the top
of the container. Under the control of the electronic device, the
ultrasonic probe transmits the ultrasonic pulse 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 object to be measured.
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 |
The measuring range:
| 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 |
5. What Melan bring you?
Melan is specialized in the
design,development,manufacturing,sales,after-sale service in the
industry of automation control and measuring instrument, we create
a full set of commercial mode to provide customers high quality
products of favorable prices, We can provide OEM product and
technical services,enhance the competitiveness to bring a stable
measurement environment to the end users.
6. Configuration
