Gravity: Analog Dissolved Oxygen Sensor / Meter Kit INTRODUCTION We launched a new opensource dissolved oxygen sensor kit, which is compatible with Arduino. This product is used to measure the dissolved oxygen in water, to reflect the water quality. This sensor kit helps you quickly to build your own dissolved oxygen detector. FEATURES Dissolved Oxygen Probe： 1. Galvanic probe, no need polarization time 2. Filling solution and membrane cap is replaceable, low maintenance cost Signal Converter Board: 1. 3.3~5.5V wide-range power supply, compatible with most Arduino microcontroller 2. 0~3.0V analog output, compatible with all microcontrollers with ADC function. 3. Gravity interface, plug and play, easy to use SPECIFICATION Dissolved Oxygen Probe Type: Galvanic Probe 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 Period: Once every month Cable Length: 2 meters Probe Connector: BNC Signal Converter Board Operating Voltage: 3.3~5.5V Output Signal: 0~3.0V Cable Connector: BNC Signal Connector: Gravity Analog Interface (PH2.0-3P) Dimension: 42mm * 32mm SHIPPING LIST Galvanic Dissolved Oxygen Probe with Membrane Cap x1 Spare Membrane Cap x1 Signal Converter Board x1 Gravity Analog Sensor Cable x1 Waterproof Gasket x2 Screw Cap for BNC Connector x1 Plastic Dropper x2