Mini Dissolved Oxygen Probe
|Article number:||Part # ENV-20-DO|
Dissolved oxygen sensor in a small Ryton housing with 1 meter cable incl SMA to BNC connector.
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).
|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|