Sonic BL-550 Ultrasonic Boundary Level Meter


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


  • 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)
Weight:7 kg
Ambient temperature:-5 ∼ +60ºC
Cable length:14m (2 core shield flexible cable)

Catalog : BL-550Boundary Level sensor

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