EZO™ pH Circuit
| Article number: | Part # EZO-pH |
| Availability: | In stock (61) |
Connect your pH probe to this circuit to create a workable signal for your microprocessor using UART or I2C protocol.
Works with any brand and type of pH sensor.
A pH (potential of Hydrogen) probe measures the hydrogen ion activity in a liquid. At the tip of a pH probe is a glass membrane. This glass membrane permits hydrogen ions from the liquid being measured to defuse into the outer layer of the glass, while larger ions remain in the solution. The difference in the concentration of hydrogen ions (outside the probe vs. inside the probe) creates a VERY small current. This current is proportional to the concentration of hydrogen ions in the liquid being measured.
| Reads | pH |
| Range | .001 − 14.000 |
| Resolution | .001 |
| Accuracy | +/– 0.002 |
| Response time | 1 reading per sec |
| Supported probes | Any type & brand |
| Calibration | 1, 2, 3 point |
| Temp. compensation | Yes |
| Data protocol | UART & I2C |
| Default I2C address | 99 (0x63) |
| Operating voltage | 3.3V − 5V |
| Data format | ASCII |
Circuit dimensions
13.97mm x 20.16mm (0.55" x 0.79")
Weight: 1.76 grams
datasheets pH circuit
Wiring Diagram
