Sonic BL-550 Ultrasonic Boundary Level Meter

Sonic BL-550 Ultrasonic Boundary Level  monitoring for the sewage tank, deposit tanks, liquid isolation tank, solid/liquid separator tank.


  • Faster response to a change in boundary
  • Continuous measurement without disturbance
  • Less mechanical parts, easy maintenance
  • Real-time monitoring with images

Another Article:


  • Boundary level monitoring at the water treatment plant
    • Sludge monitoring, control and management
    • Carryover protection
  • Iron and steel, automobile, chemical, thermal power plant, pulp, and food
    • Settling tank and separation tank drain control
  • Water and sewage
    • First precipitator, concentrator, last precipitator



Model: BL-550 Converter
Measuring method: Ultrasonic pulse-echo technique
Measuring range: 0 (+dead band)∼10m, dead band = 30cm
Accuracy: ± 1cm (in-house evaluation)
System control: Controlled by CPU
Detection period: Once or twice per second
Display: LCD Display (16 x 2)
Output: Boundary level, 4-20mA analog output
Boundary alarming, (upper/lower limit relay type output)
Contact output once the sensor signal are missed
Data for images monitoring
Input: 4-20mA analog input, as position correction information
Operating condition: Temperature -10 ∼ +40ºC (no freezing)
Humidity 20 ∼ 80% (no condensation)
Power supply : AC100V, 115V, 220V,50/60Hz
Power dissipation: 10VA
Dimensions: 304W x 320H x 135D (except convex part)
Housing material: Stainless (SUS304)
Protection grade: IP44
Weight: 8.2 Kg


Model: T-129 type transmitter/receiver
Structure: Resin mold, water-proof (include bracket and cleaning nozzle)
Frequency: 200kHz
Weight: 7 kg
Ambient temperature: -5 ∼ +60ºC
Cable length: 14m (2 core shield flexible cable)

Catalog : BL-550Boundary Level sensor

Contact us : or visit to our E-Commerce


Rudy Wiratama

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