Description
The Yokogawa RC800D is a reagent-type sensor unit for continuous free or residual chlorine measurement with the FLXA402T. It uses an amperometric polarographic method with a rotating platinum electrode and a reagent system selected for the intended chlorine measurement.
Verified technical overview
| Measured object | Free chlorine or residual chlorine (total chlorine) in water |
|---|---|
| Measurement method | Amperometric polarographic method using a rotating electrode |
| Published range | 0–10 mg/L |
| Sample conditions | 0 to 50 °C, pH 3 to 9 and 20 to 500 kPa |
| Sample flow | Application-dependent: Yokogawa lists different flow bands for municipal water, raw/sea water and secondary sewage treatment |
Engineering selection checklist
Identify whether free chlorine or total residual chlorine is required, then provide sample type, chlorine range, pH, temperature, pressure and flow. Confirm reagent selection, cleaning, calibration, indoor installation conditions and the compatible FLXA402T module.
| 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
The RC800D is applicable across water-treatment and distribution processes, including sample conditions that make non-reagent measurement less suitable. Selection must account for sample chemistry and the operating burden of reagent handling.
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-rc800d-residual-chlorine-sensor-unit |
|---|---|
| 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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