Description
The Yokogawa TB820D is a digital turbidity detector for use with the FLXA402T analyzer. Its right-angle scattered-light measurement, LED source, flat-window cell and diagnostic functions are designed for continuous water-treatment turbidity monitoring.
Verified technical overview
| Measurement method | Right-angle scattered-light method |
|---|---|
| Published ranges | 0–0.2 to 0–500 NTU with 660 nm source; 0–0.2 to 0–700 FNU with 860 nm source |
| Sample temperature | 0 to 50 °C |
| Sample flow / pressure | 0.05 to 20 L/min; 500 kPa maximum |
| System communication | Digital connection to FLXA402T; Yokogawa lists Modbus TCP/IP and Modbus RTU at system level |
Engineering selection checklist
Choose the light-source version and range for the applicable turbidity standard, then define sample conditioning, head tank, cleaning method, calibration arrangement, cable length and installation environment. Confirm the detector and FLXA402T order codes as one measurement system.
| Process data | Measurement objective, normal/minimum/maximum value, medium chemistry, temperature and pressure |
|---|---|
| Installation | Sample or immersion arrangement, connection, cable distance, cleaning and maintenance access |
| System interface | Compatible analyzer or host, power, output, communication and alarm requirements |
| Documentation | Confirm the current Yokogawa general specification and complete order code before purchase |
Industry application guidance
Suitable applications include treated-water, river-water, wastewater and general-process-water turbidity monitoring. The sample system must control bubbles, solids loading, flow and pressure so that the published detector performance can be achieved.
Related products and engineering resources
- Analytical Instruments
- Beverage Analysis Instrumentation Guide
- Yokogawa FLXA402 Four-Wire Liquid Analyzer
- Yokogawa FLXA202 Two-Wire Liquid Analyzer
- Water & Wastewater Solutions
Official manufacturer documentation
Official Yokogawa product page · Official Yokogawa general specification or product data
Published values above are tied to the stated Yokogawa model family and may vary by order code. Confirm materials, ranges, process limits, approvals and accessories for the exact configuration. No availability, price, project or performance claim is implied.
Request a quotation
Send the model, process conditions and required configuration to sales@santanfluid.com, WhatsApp China +86 136 9022 3185 or WhatsApp Indonesia +62 823 1767 3750.
Standard Technical Specification Summary
Use these fields for preliminary selection. Final values depend on the complete manufacturer model code and selected options.
| Model | yokogawa-tb820d-turbidity-detector |
|---|---|
| Measurement Range | Configuration-dependent; confirm the required span and complete model code. |
| Accuracy | Configuration-dependent; confirm the accuracy class and calibrated range. |
| Process Connection | Configuration-dependent; confirm size, rating, standard and wetted materials. |
| Output Signal | Configuration-dependent; confirm analog, digital and communication requirements. |
| Certifications | Confirm hazardous-area, functional-safety, sanitary, marine or custody-transfer approvals by model code. |
| Application Industries | Application-dependent; confirm medium, process conditions and industry requirements. |
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