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  • Dissolved Oxygen Sensors DO70G

Dissolved Oxygen Sensors DO70G

2016-05-27 15:01:08


Dissolved oxygen (DO) is 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.……




DO70G optical dissolved oxygen sensor is designed for using in water treatment plants such as sewage treatment works and effluent activated sludge process.

This optical sensor has a fast response time and good long term stability, and features replaceable sensor cap and cable for easy maintenance. A temperature sensor is incorporated for compensation. The DO70G sensor can be used in either the PB350G/PB360G floating ball holder or in the DOX8HS submersion type holder.

  • A Optical DO sensor that uses a phase measurement method and realizing stable measurements over a long period of time.

  • Measuring range of 0 to 25 mg/l.

  • A sensor cap that is easily replaceable by anyone.

Dissolved Oxygen0 to 25 mg/l (ppm)
Liquid Temperature0 to 50℃
Liquid Pressure0 to 500 kPa
Flow speed20 cm/s or more
Sensor for Temperature Compensation22k NTC
Cable Length3, 5, 10 m
WeightSensor; Approx. 0.1 kg
Cable; 3 m; Approx. 0.4 kg / 5 m; Approx. 0.6 kg / 10 m; Approx. 1.1 kg
Repeatability0.1 mg/l or 3% FS, whichever is greater
Temperature Compensation ErrorWithin ±3% FS for a ±5℃ change in the range of 0 to 40℃
Response TimeWithin 120 sec. (90 % response)