Turbidity Analyzers

Turbidity Analyzers

Relevant Process Solutions Turbidity analyzers have been providing reliable turbidity measurement in Water Treatment Plants since 1959. The TB820D and TB830D are next-generation digital Turbidity analyzers that connect to FLXA402T. These are equipped with LED and new diagnostic functions, etc. to

Although turbidity analyzers was developed for controlling and monitoring drinking water, a turbidity measurement is also required in wastewater plant more and more to achieve sustainable society. Yokogawa started turbidity business since 1959, and our analyzers supplying safety water and saving water pollution around the world. You can find the best solution thanks to excellent technologies proven by experiences.

Application for new Turbidity Analyzers

Target applicationApplication detailTB820DTB830D
Water purification plantTap water/municipal water/drinking water/potable water✓(*2)
Raw waterN/A
Industrial waterSame level of drinking water
Food & BeverageWater measurement for beer/soft drinks/juice
Disinfectant / Sanitizer
Wastewater treatmentDischarge point(*1)(*1)
Treatment plant, coagulationN/A
Process industries as Bleaching agentChemicals, Pharma, Textiles, Pulp and  Paper
Desalination plantAfter RO membrane
Drinking water✓(*2)

(*1) If allowed by correlation between SS and Turbidity
(*2) If EPA, ISO is not required

Use of Right Angle Scattered Light Turbidity Detector TB820D and Surface Scattering Light Turbidity Detector TB830D

The main differences between TB820D and TB830D are shown in the table below.

SpecificationTB820DTB830D
Measuring methodRight angle scattered light methodSurface scattering method
Measuring Range
(Turbidity standard:Formazin)
0-0.2 to 0-500 NTU (660 nm)
0-0.2 to 0-700 FNU/NTU (860 nm/ Compliant standard: ISO7027)
0-2 to 0-2000 NTU (White LED)
0-2 to 0-2000 FNU/NTU (860 nm)
Sample Conditions (Flow Rate)0.05 to 20 L/min1.5 to 2 L/min
Head tankPressurized head tank for low turbidity (for 2 NTU or less) 
Simple head tank (for over 2 NTU to 10 NTU) 
Head tank (for over 2 NTU) 
Head tank
(optional: Air denoising for Low Range)
Cleaning systemUltrasonic cleaning, automatic washAutomatic wash

The TB820D is suitable for measuring tap water and purified water.
The TB830D is suitable for measuring raw water, sewage and wastewater.

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