EZO™ Dissolved Oxygen Circuit
| Article number: | Part # EZO-DO |
| Availability: | In stock (22) |
Connect your dissolved oxygen probe to this circuit to create a workable signal for your microprocessor using UART or I2C protocol.
Works with any brand and type of D.O sensor.
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 | 0 − 100 mg/L |
| 0.1 − 400+ % saturation | |
| Accuracy | +/– 0.05 mg/L |
| Response time | ~0.3 mg/L/per sec |
| Supported probes | Any galvanic probe |
| Calibration | 1 or 2 point |
| Temp. compensation | Yes |
| Salinity compensation | Yes |
| Pressure compensation | Yes |
| Data protocol | UART & I2C |
| Default I2C address | 97 (0x61) |
| Operating voltage | 3.3V − 5V |
| Data format | ASCII |
| Circuit dimensions | |
| 13.97mm x 20.16mm (0.55" x 0.79") | |
| Weight: 1.77 grams | |
