Mini Dissolved Oxygen Probe

Article number: Part # ENV-20-DO
Availability: In stock (14)

Dissolved oxygen sensor in a small Ryton housing with 1 meter cable.

A galvanic dissolved oxygen probe consists of a PTFE membrane, an anode bathed in an electrolyte and a cathode. Oxygen molecules defuse through the probes membrane at a constant rate (without the membrane the reaction happens too quickly). Once the oxygen molecules have crossed the membrane they are reduced at the cathode and a small voltage is produced.

If no oxygen molecules are present, the probe will output 0 mV. As the oxygen increases so does the mV output from the probe. Each probe will output a different voltage in the presence of oxygen. The only thing that is constant is that 0mV = 0 Oxygen. (A galvanic dissolved oxygen probe can also be used to detect the Oxygen content in gases).

Reads Dissolved Oxygen
Range 1 − 50 mg/L
Accuracy +/– 0.2 mg/L
Response time ~0.5 mg/L/per sec
Max pressure 689 kPa (100PSI)
Max depth 60 meters (197ft)
Temperature range °C 1 − 50 °C
Cable length 89 mm
Internal temperature sensor No
Time before recalibration ~6 months
Life expectancy ~2,5 year
6 months

datasheet DO probe


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