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 |
| Maintenance | 6 months |
