EZO Dissolved Oxygen Circuit - EZO-DO

• Reads: Dissolved Oxygen
• Range: 0.01 - 100+ mg/L, 0.1 - 400+ % saturation
• Accuracy: +/- 0.05 mg/L
• Max rate: 1 reading per sec
• Calibration: 1 or 2 point
• Data protocol​: UART & I2C​
• Operating voltage​: 3.3V - 5V​
• Data format​: ASCII​

  • Model Number: EZO-DO
  • Data Sheet: Date Sheet File
Quantity:
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  • EZO Dissolved Oxygen Circuit
  • EZO Dissolved Oxygen Circuit
  • EZO Dissolved Oxygen Circuit
  • EZO Dissolved Oxygen Circuit
  • EZO Dissolved Oxygen Circuit
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Product Specification

EZO Dissolved Oxygen Circuit

EZO-DO EZO Dissolved Oxygen Circuit Description
EZO Dissolved Oxygen circuit is a very sensitive device. This sensitivity is what gives the Dissolved Oxygen circuit its accuracy. This also means that the Dissolved Oxygen circuit is capable of reading micro-voltages that are bleeding into the water from unnatural sources such as pumps, solenoid valves or other probes/sensors.

When electrical noise is interfering with the Dissolved Oxygen readings it is common to see rapidly fluctuating readings or readings that are consistently off. To verify that electrical noise is causing inaccurate readings, place the Dissolved Oxygen probe in a cup of water by itself. The readings should stabilize quickly, confirming that electrical noise was the issue

When reading Dissolved Oxygen and Conductivity together, it is strongly recommended that the EZO™ Dissolved Oxygen circuit is electrically isolated from the EZO™ Conductivity circuit.

EZO-DO EZO Dissolved Oxygen Circuit Dimensions



EZO-DO EZO Dissolved Oxygen Circuit Power consumption


LED
MAX
STANDBY
SLEEP
5V
ON
13.5 mA
13.1 mA
0.66 mA
OFF
12.7 mA
12.7 mA

3.3V
ON
12.1 mA
12 mA
0.3 mA
OFF
11.9 mA
11.9 mA


EZO-DO EZO Dissolved Oxygen Circuit Absolute max ratings
Parameter
MIN
YP
MAX
Storage temperature (EZO™ D.O.)
-65 °C

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

EZO-DO EZO Dissolved Oxygen Circuit Specifications
Reads
Dissolved Oxygen
Range
0.01 - 100+ mg/L
0.1 - 400+ % saturation
Accuracy
+/- 0.05 mg/L
Max rate
1 reading 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

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