Non-reagent Type Free Available Chlorine Sensor Unit FC800D
Providing reliable chlorine measurements in Water Treatment Plants since 1959
No.1 Process analyzer supplier to Japanese market*
The FC800D non-reagent free available chlorine analyzer adopts the polarographic method, featuring a unique rotating electrode for continuous online measurement of free available chlorine concentration.
Key Benefits
- Reliable Chlorine monitoring and minimized Chlorine injection
- Continuous automatic cleaning reduces maintenance time
- Remote maintenance capabilities for efficient process management
As part of the SENCOM4.0 platform family, the FC800D can connect to the FLXA402T. The integrated smart unit provides enhanced operational insights.
Ideal for water distribution measurements at pumping stations, water delivery points, schools, and public facilities.
*Based on a Yokogawa survey in 2019
Features
- Amperometric measurement of free chlorine (polarographic method)
- Continuous measurement without reagents
- Unique rotating electrode method keeps sensor clean
- Modularized motor unit and diagnostics simplify maintenance
- Multiple calibration options: Manual, Auto, 2-point correction
- Remote range switching capability
Configuration
Continuous automatic cleaning with beads provides contamination-resistant, stable measurement while reducing maintenance time.
- Smart unit: Built-in Main board
- Electrode Unit: Built-in Motor, Rotating contact
- Beads Case: Houses cleaning beads
- Needle valve for flow rate adjustment
- Rotating electrode: Keeps surface polished and contaminant-free
- Reference electrode: Includes temperature sensor for compensation
Applications
Each process at treatment plant: from reservoir to treated water, distribution system
- Water Purification Treatment
- Stabilization
- Flocculation
- Settling Basins
- Chlorination
- Clean water reservoir
- Distributing pump
- Distribution tank & Piping
Specifications
| Measured Object | Free chlorine in tap water |
| Measuring System | Amperometric method (Polarographic method) using rotating electrode |
| Measuring Range | Free chlorine 0-1 to 0-3 mg/L(-F1)
Combined chlorine insensitive version 0-1 to 0-3 mg/L(-C1)
Free chlorine 0-5 mg/L (-F2) (*)
Free chlorine 0-10 mg/L(-F3) (*)
(*) For "-F2" and "-F3", please refer to the General Specifications |
| Sample Condition (-F1, -C1) | Temperature: 0 to 50°C (compensation effective 0-40°C)
pH: 6.5 to 7.5 (6.0-8.0 at 1mg/L(-F1))
Conductivity: 100-300 μS/cm (100-500 μS/cm at 1mg/L(-F1))
Flow Rate: 0.1-2.5 L/min
Pressure: 1-150 kPa
SS (Suspended Solid): under 10 mg/L |
| 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. Avoid direct sunlight.) |
Performance (-F1 and -C1)
| Linearity | ±5% of reading or ±0.05mg/L whichever is greater |
| Repeatability | ±1% of reading or ±0.01mg/L whichever is greater |
| For "-F2" and "-F3", please refer to the General Specifications |
