Renke SN-3003-CL-N01-20 Industrial Residual Chlorine Sensor (Fresh Water) - RS485 Modbus, IP68

This sensor provides a digital RS485 output using the Modbus RTU protocol. Connect the supplied cable's power wires (typically red/black) to a 7-30V DC source and the data wires (typically A/B or D+/D-) to an RS485 transceiver on your PLC, data logger, or microcontroller (e.g., via a MAX485 module). Ensure proper termination and baud rate configuration (e.g., 9600 bps) in your host system.

No. The SN-3003-CL-N01-20 is explicitly designed for freshwater applications only. Using it in saltwater, seawater, or high-salinity environments will damage the electrodes, cause rapid fouling, and lead to inaccurate readings and premature sensor failure.

The advanced three-electrode, non-membrane design significantly reduces maintenance. It does not require reagent refills or diaphragm replacements. Periodic calibration (e.g., every 3-6 months) using standard chlorine solutions is recommended for optimal accuracy, depending on the application's required precision and operating conditions.

The sensor features upper and lower threaded ports (commonly NPT or PG thread) for inline installation into a pipe or tank. It is designed for immersion and flowing water applications. For specific pressure ratings and compatible fittings, consult the manufacturer's datasheet, as this information is not provided in the core specs.

Not directly. The sensor's RS485 interface requires an RS485 to TTL/UART converter module (like a MAX485) to communicate with 3.3V or 5V logic devices like Arduino or Raspberry Pi. You will need to connect the sensor to the converter, then the converter's TX/RX pins to your microcontroller's serial port and implement a Modbus RTU library to read the data registers.