Ultrasonic Level Sensor

Ultrasonic Level Trasmitter 1

For challenging fluid measurement & monitoring, ultrasonic level sensors and ultrasonic level transmitters are very useful. These accurate and reliable sensors are designed for the most difficult fluids to monitor, where contact with media is not desirable. The level height is calculated from the time it takes for ultrasonic pulses to travel from the sensor to the surface of the medium and back. Chemical and physical properties of the medium do not influence the measurement result.

Category:

The sensor pulses in the direction of the product surface. The pulse signals are reflected and are received by the sensor. The transmitter measures the time t between pulse transmission and reception. The meter uses the time t (and the velocity of sound) to

calculate the distance D between the sensor membrane and the product surface:
D = c •t/2.  As the device knows the empty distance H from a user entry, it can calculate the level as follows: L= H – D.

The ultrasonic velocity in gas is influenced by the gas temperature, So the level meter needs to detect the gas temperature at work. So, the material level meter needs to detect the gas temperature at work and compensation for sound velocity.

B: Blanking distance D: Distance value  L: Level value
H: Installation height F: Level span

This continuous level measurement is based on the travel time of ultrasonic pulses to the surface of the medium and back. When installing the sensor, the typical block distance has to be considered. Rough liquid surfaces and the changed angle during filling and emptying granulated solids influence the reflection of the ultrasonic pulses and may impact measurement.

An ultrasonic level sensor is also appropriate for corrosive media like Acids, Wastewater, Inks and Paints, Slurries, Food and Beverage, Semiconductor Process Chemicals and Oils and Petroleum Distillates etc.

Features

  • Integrated design and installed conveniently
  • Protected in the excessive voltage and current, protected in the thunder and lightning
  • The big show window of LCD is easy to debug and observe
  • Over-voltage over-current protection, lightning protection
  • Advanced clamp type terminal, to ensure that wiring never loose
  • Intellectual signal treatment technology guarantees that the instrument meets various kinds of operating occasion
  • All plastic probe, acid and alkali resistant, adapt to bad environment

 

 

 

 

 

Specifications

Power supply DC24V (±10%) 30mA
Display 4 digit LCD
Display resolution 0.03% of the actual range
Output current 4-20mA
Output load 0-500Ω
Temperature range -40 ℃~75℃
Pressure range ±0.1MPa (press definitely)
Temperature compensation full range of automatic compensation
Cable diameter Φ 6 ~ Φ12 mm
Single wire diameter Φ0.5 ~ Φ1.78 mm
Measuring Cycle 1.5 seconds
8º(3db) for range Plane Type Sensor (4m 6m 8m 12m 20m 30m)
5º(3db) for range Horn Type Sensor (20m,30m)
Electronic unit shell material die-casting aluminum with plastic-sprayed surface
The sensor material ABS/PVC/PTFE
Protect grade IP67

 

Applications

Ultrasonic transmitter is used to measure ultrasonic liquid level or material surface of storage tank, chute, pool, wells, drains, metering box, granary etc.

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