Dragino DR-CL | Integrated Residual Chlorine Sensor (RS485)
The Dragino DR-CL is an integrated residual (free) chlorine sensor with RS485 Modbus output, for the Dragino WQS water-quality transmitter.
- Residual chlorine: measures free chlorine in water with 0.01 mg/L resolution.
- Two ranges: 0-2 mg/L (DR-CL-2ML) or 0-10 mg/L (DR-CL-10ML).
- Rugged: IP68, 0.6 MPa pressure rating, RS485 Modbus-RTU.
Dragino DR-CL | Integrated Residual Chlorine Sensor (RS485) - Chlorine Measuring Range: 0-2 mg/L is backordered and will ship as soon as it is back in stock.
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Dragino DR-CL | Integrated Residual Chlorine Sensor (RS485)
Description
Description
The Dragino DR-CL is an integrated residual chlorine sensor that measures free (residual) chlorine in water and outputs readings over RS485 (Modbus-RTU). It is designed to connect to the Dragino WQS-series water quality transmitter (sold separately), which uploads the data to a LoRaWAN, NB-IoT or CAT-M1 server for remote monitoring.
It is available in two measurement ranges - DR-CL-2ML (0-2 mg/L) for low-chlorine applications such as drinking water, and DR-CL-10ML (0-10 mg/L) for higher-concentration applications - both with 0.01 mg/L resolution and an IP68, pressure-rated build for demanding water environments.
Key Features
Typical Applications
Available Models
| Model | Chlorine Range | Resolution |
|---|---|---|
| DR-CL-2ML | 0 - 2 mg/L | 0.01 mg/L |
| DR-CL-10ML | 0 - 10 mg/L | 0.01 mg/L |
Technical Integration
Frequently Asked Questions
What is the difference between DR-CL-2ML and DR-CL-10ML?
Only the measurement range: 0-2 mg/L versus 0-10 mg/L. All other specifications are identical.
Does it work on its own?
No - it is a probe that connects via RS485 to the Dragino WQS-series transmitter (sold separately), or to any Modbus-RTU controller.
How is it installed?
Via a flow channel with a recommended flow rate of 30-60 L/h, in water at 0-50 °C and pH 4-9.
Monitoring Water Quality?
Specifications
Specifications
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Primary Communication ProtocolModbus RTU (RS485)
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Configuration MethodModbus Commands
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Environment RatingIndustrial
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IP RatingIP68
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Operating Temperature0°C to 50°C
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Power Consumption0.19 W
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Measurement Technology
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Measurement Range
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Measurement Accuracy
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Measurement Resolution
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Interfaces (I/O)RS485 (Modbus RTU)
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