{"title":"Gravity: Electrochemical Oxygen Sensor (0-100%Vol) - I2C","handle":"gravity-electrochemical-oxygen-sensor-0-100-vol-i2c","url":"/products/gravity-electrochemical-oxygen-sensor-0-100-vol-i2c","description":"This full-scale oxygen sensor uses an original AO2 CiTiceL electrochemical probe to measure oxygen concentrations from 0–100%Vol via I2C digital output. A built-in calibration algorithm on the signal board supports single-point or double-point calibration for accurate readings in demanding environments.\n\nThe electrochemical sensing principle provides strong anti-interference ability, high stability, and up to two years of service life. Compatible with Arduino, ESP32, Raspberry Pi, and other mainstream controllers, the sensor uses DFRobot's Gravity interface for quick plug-and-play connections.\n\nKey Features\n\n\nWide Measurement Range – 0–100%Vol oxygen concentration\n\nI2C Digital Output – Simple two-wire communication\n\nBuilt-in Calibration – Single-point or double-point calibration via onboard algorithm\n\nStrong Anti-Interference – Electrochemical principle with high stability and sensitivity\n\nLong Lifespan – Over 2 years in air\n\nGravity Interface – Plug-and-play with compatible controllers\n\n\nSpecifications\n\n\nMeasuring Range: 0–100%Vol\n\nWorking Voltage: 3.3–5.5 V DC\n\nOutput Signal: I2C\n\nWorking Pressure Range: 0.5–2.0 Bar\n\nOperating Temperature: −20 °C to +50 °C\n\nOperating Humidity: 0–99% RH (non-condensing)\n\nResponse Time: <5 s (20.9–100%); <40 s (0.1–20.9%)\n\nStability: <10%/year\n\nBoard Size: 32 × 27 mm\n\nMounting Hole: 3.1 mm inner / 6 mm outer diameter\n\n\nIdeal For\n\nOxygen generators and concentrators\nAutomobile exhaust analysis\nAir-fuel ratio detection\nEnvironmental oxygen monitoring\n\n\n\nWarning: Avoid exposing the sensor probe to high concentrations of solvent vapours during storage, installation, and operation.\n\n\nPackage Contents\n\n1× AO2 Oxygen Sensor Signal Adapter Board\n1× AO2 Oxygen Sensor Probe\n1× Gravity 4-Pin Cable\n1× Molex 2510 to PH2.0 Cable (20 cm)\n\n\nResources\n\nProduct Wiki\nAO2 Datasheet (PDF)\nSchematics (PDF)\nDimension & Component Layout (PDF)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2228,"title":"Default Title","sku":"DF-SEN0496","price":168.03,"on_sale":false,"in_stock":true,"available_quantity":5,"option1":"Default Title"}]}