EZO pH Circuit - EZO-pH

  • EZO pH Circuit
  • EZO pH Circuit
  • EZO pH Circuit
  • EZO pH Circuit
  • EZO pH Circuit
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• Reads: pH
• Range: 0.001 - 14.000​
• Accuracy: +/- 0.002​
• Max rate: 1 reading per sec​
• Data protocol: UART & I2C​
• Operating voltage: 3.3V - 5V​
• Data format: ASCII​
• Circuit dimensions: 13.97mm x 20.16mm (0.55" x 0.79")
• Weight: 1.76 grams​

  • Model Number: EZO-pH
  • Data Sheet: Date Sheet File
Quantity:
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Product Specification

EZO pH Circuit

EZO-pH EZO pH Circuit Operating principle
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.

EZO-pH EZO pH Circuit Dimensions


EZO-pH EZO pH Circuit Power consumption


LED
MAX
STANDBY
SLEEP
5V
ON
18.3 mA
16 mA
1.16 mA
OFF
13.8 mA 
13.8 mA

3.3V
ON
14.5 mA
13.9 mA
0.995 mA
OFF
13.3 mA
13.3 mA


EZO-pH EZO pH Circuit Absolute max ratings
Parameter
MIN
YP
MAX
Storage temperature (EZO™ pH) -65 °C

125 °C
Operational temperature (EZO™ pH)
-40 °C
25 °C
85 °C
VCC
3.3V
5V
5.5V

EZO-pH EZO pH Circuit Specifications
Reads
pH
Range
0.001 - 14.000
Accuracy
+/0.002
Max rate
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

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