Bar02 Ultra High Resolution 10m Depth/Pressure Sensor - Marine Thinking
Bar02 Ultra High Resolution 10m Depth/Pressure Sensor - Marine Thinking
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Bar02 Ultra High Resolution 10m Depth/Pressure Sensor

Vendor
BlueRobotics
Regular price
$121.59
Sale price
$121.59
Regular price
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Unit price
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This pressure sensor can measure up to 2 bar absolute pressure (10m depth) with a depth resolution of 0.16mm and an in-air altitude resolution of 13cm. It is waterproof and ready to install. This sensor is NOT compatible with ArduSub or the BlueROV2.

Product Description
The Bar02 Ultra-High Resolution 10m Depth/Pressure Sensor is a low-pressure, high resolution, high accuracy version of our Bar30 sensor. Using the MS5837-02BA sensor from Measurement Specialties, this device can measure up to 10 meter depth (2 bar absolute pressure) with a water depth resolution of just 0.16mm! It can also measure altitude in air using air pressure with a resolution of 13cm. It’s housed in the same penetrator form factor as the Bar30 and can handle up to 10 bar absolute pressure (90 meter water depth).

One of the key features of this version of the sensor compared to the Bar30 sensor is the very high accuracy. According to the datasheet, the worst case accuracy is about +/- 4 mbar (4 cm water depth).

The sensor communicates over I2C. It operates on 3.3V I2C voltage but can accept power input up to 5.5V. It comes standard with a 4-pin DF13 connector, however it is not compatible with ArduSub or the BlueROV2.

This sensor includes a temperature sensor accurate to ±2°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 in the Technical Details tab. Feel free to adapt for your own needs.

The gel-filled sensor must be completely dried once per day or the pressure and temperature readings will drift.

 

specification

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
Mating Connector  Hirose 4-pos DF13 available on Digi-Key
Pressure
Maximum Mechanical Pressure 10 bar 145 psi
Standard Operating Pressure 0.3-1.2 bar 4-17 psi
Standard Operating Pressure 0-2 bar 29 psi
Operating Depth 10m 33 ft
Relative Accuracy (-20-85°C) +/- 4 mbar (4 cm in freshwater) +/- .004 psi (1.5 inches 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 +/- 2°C (when used between -20 to +85°C) +/- 3.6°F
Physical
Recommended Through Hole Size 10.2 mm 13/32"

 

Contents

  • 1 x Bar02 Pressure Sensor
  • 1 x O-ring
  • 1 x Nut