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Galvanic Dissolved Oxygen Sensor - Sensorex DO6440 Series

DO6440 Series Galvanic Dissolved Oxygen Sensor with Direct 4-20mA Output

Our DO6440 series of galvanic dissolved oxygen sensors deliver accurate measurements with very fast response time. Calibration is simple and only requires a single-point air calibration. Sensor directly outputs a 4-20mA signal scaled to the sensor range for easy PLC integration.

  • Fast response time for accurate dissolved oxygen monitoring

  • Direct 4-20mA output signal to integrate with a PLC or other control system

  • Ready for long-term deployment with large electrolyte reservoir

  • One year limited warranty


  • Measurement Range: 0-100% (DO6441) or 0-200% (DO6442) dissolved oxygen

  • Temperature Range: 0-50° C

  • Body Construction: Noryl, PTFE,Viton®

  • Power Requirement: 12-36V DC

  • Cable Length: 10 feet (3 meters)

  • Connector: Tinned leads

  • Warranty: One year limited warranty

Brochures and Technical References:

DO6400 Series Dissolved Oxygen Sensors

Instruction Sheet for DO6440 Galvanic Dissolved Oxygen Sensor with Direct 4-20mA Output


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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