CS4 Chlorine Water Quality Sensor with 4-9 pH Range and 0-45℃ Temperature Compensation for Seawater Monitoring
The CS4 Chlorine Sensor is a membrane-covered, amperometric 3-electrode water quality sensor designed for precise measurement of free inorganic chlorine in both fresh water and seawater applications. With integrated automatic temperature compensation and reduced pH-dependence, this sensor delivers stable, accurate readings for effective water disinfection monitoring.
| Parameter | Specification |
|---|---|
| Product Model | Chlorine Sensor CS4 |
| pH Range | 4 ~ 9 |
| Pressure Range | 0 ~ 3 bar (no pressure surges) |
| Temperature Range | 0 ~ 45℃ |
| Response Time | T90 2 minutes |
| Shaft Length | Standard 175 mm, up to 220 mm (mA Version) |
| Calibration Method | Analytical chlorine determination by DPD-1 method |
| Connection Options | mA version 2-pole terminal, M12 male, or Modbus RTU with M12 male |
| Construction Materials | PVC-U, PEEK, stainless steel 1.4571, microporous hydrophilic membrane |
- Measures free inorganic chlorine in seawater and fresh water
- Integrated automatic temperature compensation
- Reduced pH-dependence for more stable readings
- Fast response time with T90 of 2 minutes
- Compatible with various chlorine compounds including NaClO, Ca(OCl)2, Cl2
- Wide conductivity range: 10 µS/cm ~ 50 mS/cm
- Partially tolerant to surfactants
The sensor accurately measures sodium hypochlorite (NaClO), calcium hypochlorite (Ca(OCl)2), chlorine gas (Cl2), and electrolytically generated chlorine, making it suitable for various disinfection applications.
Ideal for water quality monitoring in both fresh water and seawater environments with conductivity ranging from 10 µS/cm to 50 mS/cm. Suitable for industrial water treatment, municipal water systems, and marine applications.
| Type | Measuring Range (ppm) | Resolution (ppm) | Output Signal | Power Supply | Item Number |
|---|---|---|---|---|---|
| CS4H-M0c | 0.005 ~ 2.000 | 0.001 | Modbus RTU | 9 ~ 30 V DC | 3426360 |
| CS4N-M0c | 0.05 ~ 20.00 | 0.01 | Modbus RTU | 9 ~ 30 V DC | 3426361 |
| CS4L-M0c | 0.5 ~ 200.0 | 0.1 | Modbus RTU | 9 ~ 30 V DC | 3426362 |
| CS4MA2 | 0.01 ~ 2.00 | 0.01 | 4 ~ 20 mA | 12 ~ 30 VDC | 3426303 |
| CS4MA5 | 0.01 ~ 5.00 | 0.01 | 4 ~ 20 mA | 12 ~ 30 VDC | 3426304 |
| CS4MA10 | 0.01 ~ 10.00 | 0.01 | 4 ~ 20 mA | 12 ~ 30 VDC | 3426305 |
| CS4MA20 | 0.01 ~ 20.00 | 0.01 | 4 ~ 20 mA | 12 ~ 30 VDC | 3426306 |
| CS4MA200 | 0.5 ~ 200 | 0.1 | 4 ~ 20 mA | 12 ~ 30 VDC | 3426307 |
• Avoid sudden temperature changes during operation
• Interference factors: 75% of ClO2 concentration, 80% of O3 concentration
• Combined chlorine may increase measured values
Each CS4 Chlorine Sensor package includes: sensor unit, membrane cap, and electrolyte solution.
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