The Bar30 pressure sensor is a high-pressure, high-resolution pressure sensor. With 0.2 bar resolution, it has an amazing depth measurement resolution of 2mm in the water column! It can also be use in air to measure altitude.

The sensor is the Measurement Specialties MS5837-30BA, which can measure up to 30 bar (300m depth) and communicates over I2C. It operates on 3.3V I2C voltage but can accept power input up to 5.5V. It includes four solder pads for ground, 3.3V-5.5V power, and 3.3V I2C lines.

This sensor includes a temperature sensor accurate to ±1°C, with data also accessible through I2C. If you need something with more temperature accuracy, please check out the Celsius Temperature Sensor.

The electrical schematic and board layout are open-source and the design files are available below. Feel free to adapt for your own needs. 




BlueRobotics
Sensors and Sonars
PCB for Bar30 High-Resolution 300m Depth/Pressure Sensor - Marine Thinking
PCB for Bar30 High-Resolution 300m Depth/Pressure Sensor - Marine Thinking
PCB for Bar30 High-Resolution 300m Depth/Pressure Sensor - Marine Thinking
  • SKU: BAR30-SENSOR-PCB-BR

PCB for Bar30 High-Resolution 300m Depth/Pressure Sensor

$48.99
This pressure sensor can measure up to 30 Bar (300m depth) with a depth resolution of 2mm. This board-level version can be tightly integrated into projects.

    The Bar30 pressure sensor is a high-pressure, high-resolution pressure sensor. With 0.2 bar resolution, it has an amazing depth measurement resolution of 2mm in the water column! It can also be use in air to measure altitude.

    The sensor is the Measurement Specialties MS5837-30BA, which can measure up to 30 bar (300m depth) and communicates over I2C. It operates on 3.3V I2C voltage but can accept power input up to 5.5V. It includes four solder pads for ground, 3.3V-5.5V power, and 3.3V I2C lines.

    This sensor includes a temperature sensor accurate to ±1°C, with data also accessible through I2C. If you need something with more temperature accuracy, please check out the Celsius Temperature Sensor.

    The electrical schematic and board layout are open-source and the design files are available below. Feel free to adapt for your own needs. 




    • 1 x Bar30 Pressure Sensor (PCB Only)


    Parameter

    Value

    Electrical

    Supply Voltage

    2.5-5.5 volts

    I 2 C Logic Voltage (SDA and SCL)

    2.5 - 3.6 volts

    Peak Current

    1.25 mA

    Pressure

    Maximum Mechanical Pressure

    50 bar

    725 psi

    Operating Pressure

    0-30 bar

    435 psi

    Operating Depth

    300m

    990 ft

    Absolute Accuracy (0-40°C)

    +/- 200 mbar (204 cm in freshwater)

    +/- 2.9 psi (6.69 ft in freshwater)

    Temperature

    Operating Temperature

    -20 to +85°C

    -4 to 185°F

    Storage Temperature

    -40 to +85°C

    -40 to 185°F

    Absolute Accuracy

    +/- 1.5°C (when used between 0-60°C)

    +/- 2.7°F

     

    Documents

    MS5837-30BA Data Sheet (PDF)

    Bar30 Schematic (PDF)



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