Dissolved Oxygen Sensors

Dissolved oxygen sensors use a liquid process measurement for determining the amount of oxygen dissolved or carried in the process liquid. There are three common technologies for dissolved oxygen measurements: polographic, galvanic and optical. The standard units of measure are milligrams per liter (mg/l), parts per million (ppm), parts per billion (ppb), or % saturation.

Featured Solutions

  • DO30G Dissolved Oxygen Sensor

    The DO30G sensor for dissolved oxygen is designed for use in water treatment plants such as sewage treatment works, effluent activated sludge process, and potable water treatment. It is also effective in river monitoring, intake protection, fish farming and other fields where water quality is important. This galvanic cell has a fast response time and good long-term stability and features replaceable diaphragm and cable for easy maintenance. A temperature sensor is incorporated for compensation. The DO30G sensor can be used in either the floating ball fitting or in the immersion fitting.

    Features

    • Fast response time
    • Good long-term stability
    • Easy membrane change

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  • Yokogawa Oxygold

    The OXYGOLD G is a dissolved oxygen sensor for general use in trace measurement. It was developed for use in power plants, chemical, pharmaceutical and semidconductor industries. It is sutiable for use at high temperatures, high pressures and during sterilization and CIP. The OXYGOLD G is easy to maintaing as its inner body can be replaced by the user.

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  • Hamilton VisiFerm Optical DO Sensor

    The VisiFerm Optical DO Sensor utilizes luminescent technology and eliminates the typical drawbacks associated with membrane components. The measurement is unaffected by sample fouling and poisoning and is virtually maintenance free as there are no membranes to replace, no electrolyte solution to replenish and no anode or cathode to clean. The VisiFerm also requires infrequent calibration. This sensor utilizes luminescent technology and eliminates the typical drawbacks of membrane components. The measurement is unaffected by sample fouling or poisoning and virtually maintenance free with no membranes to replace, no electrolyte solution to replenish, no anode or cathode to clean or replace and long calibration intervals.

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  • Low ppb Optical Dissolved Oxygen Sensor, Hamilton VisiTrace

    The VisiTrace DO is designed to measure dissolved oxygen in the low ppb range in brewing applications, notably during filtration and filling. Adjacent markets are also boiler feed water in power plant. The VisiTrace DO offers all the advantages of Hamilton`s optical dissolved oxygen sensors: fast response time and easy maintenance. Improvements compared to conventional electrochemical (amperometric) sensors include flow independence, a rapid start-up with no polarization time and simplified maintenance. Monitoring in low ppb ranges is essential in many applications such as brewing processes and power plants.

    VisiTrace DO provides the ability to rapidly and precisely perform measurements across its 0 – 2,000 ppb dissolved oxygen range. It provides accurate and undistorted results across all conditions and concentrations and is not affected by flow, pressure or presence of CO2. The startup is quick because the optical sensor does not require polarization. Maintenance is easy and seldom required – just a quick exchange of the sensor cap.

    The VisiTrace utilizes luminescent technology and eliminates the typical drawbacks of membrane components. The measurement is unaffected by sample fouling or poisoning and virtually maintenance free with no membranes to replace, no electrolyte solution to replenish, no anode or cathode to clean or replace and long calibration intervals.

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