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HL2000 | Ultrasonic Interface Level Meter
[Measurement Equipment [ Other measurement equipment ]]


Measures the flying time of ultrasonic signal to the sludge level

Ultrasonic signal has characteristic that it reflects where the density changes.
Submerged sensor transmit ultrasonic signal, then the signal reflects at the interface inside the tank. Some part of signal penetrate into the sludge and it also reflects at the rake or bottom of the tank.

Ultrasonic signal transfers in the unclear water. There is no need to contact to the measuring object (sludge), the measurement can be done without sinking the sensor deep into the tank.

HL2000 concept

  • Measuring range is wide from 0.5 to 10 meters.
  • One unit can measure two distances from different sensors. 
  • Thanks to ultrasonic signal, no need to care about clarity of the water, day or night (nob need of light)
  • Calculation process is prepared for supply water quality or deposited sludge, so no need of extra setting or calibration.
  • Durable and stable. Both main unit and sensor unit does not consist any mechanical movement part.

  • Interface management of settling tank at industrial wastewater treatment facility
  • Interface management for a settling tank at sewage treatment facility

Setting sample
application example of ultrasonic interface level meter


Model No. HL2000
Number of channels 2
400 kHz
Measuring target Sludge interface
Measurement distance range
0.4 - 10 m
Measurement 1 cm
Display 1 cm
Data update cycle 1 sec.
Sensor directivity angle (half of full angle of sound pressure)
Power source
Voltage 100-240 V AC ±15%
Power consumption 10 VA
Display LCD (with backlight)
Output Alarm output 2 points each for upper/lower channel
250V AC, 30V DC, 5 A (relay contact)
4-20 mA current output Resolution: 16 bits, 1 point per channel
(Max. load resistance 450Ω)
Interface RS-232C(Transmission distance : Max. 10m)
ModelMain unit
Sensor unit
Ambient operating temperature -10 to 60d℃ -5 to 60d℃
Material Painted steel Case: PVC
Cable: PVC
Structure IP54 equivalent IP68 equivalent
280x92.5x322 dia. 80x95
Sensor cable length - 20 m
Max. sensor cable length - 100 m *1
3.6 kg
2.2 kg
*1  Please contact us for extension of the cable.


  • Sensor surface must be kept clean for correct measurement. Please use cleaning nozzle to keep it clean.
  • Please supply water to cleaning nozzle constantly. (recommended water flow is 20 L/min)

cleaning nozzle

Industrial Equipment TEL:81-532-41-2774