DFRobot Gravity Lab Grade Analog Dissolved Oxygen Sensor / Meter Kit For Arduino


This is a dissolved oxygen sensor kit, which is compatible with Arduino microcontrollers. This dissolved oxygen meter product is used to measure the dissolved oxygen in water, to reflect the water quality. It is widely applied in many water quality applications, such as aquaculture, environment monitoring, natural science, etc.

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There’s an old saying regarding keeping fish, “Good fish deserves good water”. Good water quality is very important to aquatic organisms. Dissolved oxygen is one of the important parameters to reflect water quality. Low dissolved oxygen in the water will lead to difficulty in breathing for aquatic organisms, which may threaten their lives.
Galvanic probe, no need polarization time
The filling solution and membrane cap is replaceable, low maintenance cost
3.3~5.5V wide-range power supply, compatible with most Arduino micro-controller
0~3.0V analog output, compatible with all micro-controllers with ADC function.
Gravity interface, plug, and play, easy to use

Detection Range 0~20mg/L
Response Time Up to 98% full response, within 90 seconds (25℃)
Pressure Range 0~50PSI
Electrode Service Life 1 year (normal use)
Maintenance Period Membrane Cap Replacement Period: 1~2 months (in muddy water); 4~5 months (in clean water) Filling Solution Replacement
Cable Length 2 meters
Probe Connector BNC
Operating Voltage 3.3~5.5V
Output Signal 0~3.0V
Cable Connector BNC
Signal Connector Gravity Analog Interface (PH2.0-3P)


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