Description
Yokogawa DO71 and DO72 are SMART optical dissolved-oxygen sensors for water and wastewater measurement. DO71 uses an integrated cable, while DO72 uses a separate cable and is available in wide-range and trace-range versions.
Verified technical overview
| DO71 range / cable | 0 to 22.5 mg/L; integrated cable |
|---|---|
| DO72-W range / cable | 0 to 22.5 mg/L; separate cable |
| DO72-T range / cable | 0 to 2 mg/L; separate cable |
| Operating temperature | 0 to 50 °C |
| Pressure / response | DO71: 0 to 300 kPa; DO72: 0 to 1200 kPa; response ≤90 seconds to 90% |
Engineering selection checklist
Choose DO71, DO72-W or DO72-T from concentration range, pressure, cable arrangement and analyzer or host compatibility. Define installation fitting, cleaning access, flow conditions and any salinity or pressure compensation before ordering.
| 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
Applications include aeration basins, wastewater treatment, aquaculture, environmental monitoring and steam-and-water analysis. In food, beverage or pharmaceutical utilities, verify process-contact materials and installation requirements for the exact assembly.
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-do71-do72-optical-dissolved-oxygen-sensors |
|---|---|
| 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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