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Yokogawa Electric Corporation
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  5. Yokogawa - Model TB820D - Right Angle ...

Yokogawa - Model TB820D -Right Angle Scattered Light Turbidity Detector

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The TB820D is part of the SENCOM4.0 platform family and can connect to FLXA402T. Thanks to a smart unit equipped detector, TB820D gives you more insight into the ordinary operation.

The TB820D turbidity analyzer using the right-angle light scattering method provides highly reliable measurements and uses LED as a light source.

For more information: https://www.yokogawa.com/solutions/products-and-services/measurement/analyzers/liquid-analyzers/turbidity-analyzers/tb820d/

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Easy to clean cell structure, Automatic wash system, Long life time light source

  • High reliable measurement with excellent linearity and repeatability
  • Measure wide turbidity range (0-0.2 to 0-700 FNU (Light source 860 nm), 0-0.2 to 0-500 NTU (Light source 660 nm))
  • Longer life time light source by LED
  • Flat window cell structure is designed for small dead volume to prevent dirty retention
  • Diagnostics functions recommend you the appropriate maintenance time
  • Remote wash and calibration functions are available
  • Ultrasonic cleaning is available
  • Automatic 2 or 3 range switching is available
  • Can access all maintenance parts from the front panel
  • Max 20 m cable length is available between TB820D and FLXA402T thanks to digital technology

Turbidity of tap water, sewage, river water and water used in general processes

Water Purification Treatment

  • Sedimentation 
  • Flocculation 
  • Settling Basins 
  • Clean water reservoir 
  • Distributing pump 
  • Distribution tank & Piping 

Wastewater Treatment 

  • Discharge/Reuse 

Measuring method: Right angle scattered light method


Measuring Range (Turbidity standard: Formazin):

  • 0-0.2 to 0-500 NTU (Light source 660 nm)
  • 0-0.2 to 0-700 FNU (Light source 860 nm/ Compliant standard: ISO7027)

Sample Conditions

  • Temperature: 0 to 50°C
  • Flow Rate: 0.05 to 20 L/min
  • Pressure: 500 kPa max

Power Supply: 100 to 240 V DC, 50/60 Hz


Digital Communication: Modbus TCP/IP, Modbus RTU

Installation: Indoor (Outdoor use requires protection against rain. Direct sunlight must be avoided.)