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DO Sensors

Dissolved Oxygen (DO) sensors are essential tools in a variety of industries, particularly those involving water treatment, aquaculture, and environmental applications. These sensors provide vital data regarding the amount of oxygen dissolved in water, which is a key parameter in evaluating the health of aquatic ecosystems or optimizing wastewater treatment processes.

These sensors often incorporate smart technology with on-board data processing capabilities, allowing for real-time, accurate measurements. They are designed for direct immersion in water, with their bodies constructed from durable materials like polypropylene or combinations of plastic and stainless steel. This robust construction enables them to withstand harsh environments and function effectively in high-turbidity or high-viscosity waters.

Another noteworthy feature of these DO sensors is their low maintenance requirement, thanks to elements like thick-wall Teflon membranes that offer high stability, low-drift, and impressive durability. They also include automatic temperature compensation, ensuring that changes in water temperature do not affect the accuracy of the readings.

The communication capabilities of these sensors are typically advanced, using protocols such as MODBUS RTU (RS-485) for output communication. Therefore, their design often includes quick-connect plugs that eliminate the need for hard wiring, making sensor installation and replacement more efficient.


Application Features:


  • Wide Application Range: These sensors are ideal for use in water and wastewater treatment, aquaculture, and environmental applications. Their robust design and accurate readings make them suitable for assessing water quality in various contexts.
  • On-board Data Processing: The integrated smart technology allows for immediate data processing, providing real-time, accurate DO measurements.
  • Durable and Robust Design: Made from materials like polypropylene or a combination of plastic and stainless steel, these sensors are designed to withstand harsh conditions, providing long-lasting service.
  • Low Maintenance Requirement: Features such as thick-wall Teflon membranes contribute to high stability, low-drift, and a low need for maintenance.
  • Automatic Temperature Compensation: This feature ensures the accuracy of measurements even under varying temperature conditions.
  • Advanced Communication Protocols: The use of MODBUS RTU (RS-485) allows for efficient communication and data transfer.
  • Easy Installation and Replacement: The design often includes quick-connect plugs, eliminating the need for hard wiring and making the process of sensor installation and replacement more efficient.
About Us

Karma Instrumentation & Control is a specialist supplier of process control and automation equipment and SI systems, as well as a manufacturer and designer of process and electrical control panels.

Contact Us

• Address: Block A, Unit 3D, Wild Fig Business Park, 1494 Cranberry Street, Honeydew, 2170

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• Call us: 011 794 2859

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