CS4 Residual Chlorine Sensor 4-20mA RS485 with 0.005-200 ppm Range for Sewage Water Treatment
The CS4 film-coated online residual chlorine sensor provides precise monitoring of free chlorine concentration in water treatment applications. Featuring 4-20mA or RS485 Modbus RTU output options, this sensor delivers reliable performance for sewage treatment, swimming pools, drinking water control, and seawater applications.
Utilizing advanced membrane-covered amperometric 3-electrode system technology, the sensor reacts with residual chlorine to generate electrical signals with exceptional sensitivity and accuracy.
- High sensitivity detection from 0.005 ppm to 200 ppm
- Real-time monitoring with T90 response time of 2 minutes
- Digital 4-20mA or Modbus RTU output options
- Integrated automatic temperature compensation
- Long operational life with minimal maintenance requirements
- Stable performance across temperature range of 0-45°C
- Low flow-dependence operation at approximately 30 L/h
| Parameter | Specification |
|---|---|
| Measuring Range | 0.005-200 ppm (model dependent) |
| pH Range | 4-9 pH |
| Temperature Range | 0-45°C |
| Pressure Range | 0-3.0 bar |
| Response Time | T90 2 minutes |
| Flow Rate | Approximately 30 L/h |
| Shaft Length | Standard 175 mm, up to 220 mm (mA version) |
| Connection Types | 2-pole terminal or M12 male |
| Construction Materials | PVC-U, PEEK, stainless steel 1.4571, microporous hydrophilic membrane |
| Power Supply | 9-30V DC (Modbus) or 12-30V DC (4-20mA) |
| Item Number | Model | Measuring Range (ppm) | Resolution (ppm) | Output Signal |
|---|---|---|---|---|
| 3426360 | CS4H-M0c | 0.005-2.000 | 0.001 | Modbus RTU |
| 3426361 | CS4N-M0c | 0.05-20.00 | 0.01 | Modbus RTU |
| 3426362 | CS4L-M0c | 0.5-200.0 | 0.1 | Modbus RTU |
| 3426303 | CS4MA2 | 0.01-2.00 | 0.01 | 4-20mA |
| 3426304 | CS4MA5 | 0.01-5.00 | 0.01 | 4-20mA |
| 3426305 | CS4MA10 | 0.01-10.00 | 0.01 | 4-20mA |
| 3426306 | CS4MA20 | 0.01-20.00 | 0.01 | 4-20mA |
| 3426307 | CS4MA200 | 0.5-200.0 | 0.1 | 4-20mA |
| 3426313 | CS4MA2-M12 | 0.01-2.00 | 0.01 | 4-20mA |
| 3426314 | CS4MA5-M12 | 0.01-5.00 | 0.01 | 4-20mA |
| 3426315 | CS4MA10-M12 | 0.01-10.00 | 0.01 | 4-20mA |
| 3426316 | CS4MA20-M12 | 0.01-20.00 | 0.01 | 4-20mA |
| 3426317 | CS4MA200-M12 | 0.5-200.0 | 0.1 | 4-20mA |
Designed for sewage treatment plants, water treatment facilities, swimming pool monitoring, drinking water quality control, and seawater applications. Suitable for measuring free inorganic chlorine based on iso-cyanuric acid, with special electrolyte available for seawater use.
Each unit includes sensor, membrane cap, and electrolyte (fresh water version). Special electrolyte available for seawater applications.
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