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Air Pressure Sensor Module (0-40KPa) - HX710B

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The HX710B Air Pressure Sensor Module (0–40kPa) 3.3V–5V is a compact, high-resolution pressure measurement module designed for detecting and measuring low-range air pressure and differential pressure. It combines a pressure-sensing element with the HX710B precision 24-bit analog-to-digital converter (ADC), allowing small pressure-related signals to be converted into digital data for processing by a microcontroller. The module is designed for a...
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The HX710B Air Pressure Sensor Module (0–40kPa) 3.3V–5V is a compact, high-resolution pressure measurement module designed for detecting and measuring low-range air pressure and differential pressure. It combines a pressure-sensing element with the HX710B precision 24-bit analog-to-digital converter (ADC), allowing small pressure-related signals to be converted into digital data for processing by a microcontroller.

The module is designed for a nominal pressure range of 0 to 40kPa and operates from a 3.3V to 5V DC power supply. Its integrated pressure port allows connection to a suitable flexible tube, making it useful for air-pressure experiments, pneumatic systems, breath-pressure detection, vacuum monitoring, and indirect liquid-level measurement using hydrostatic air pressure.

The onboard HX710B provides high-resolution digital conversion and communicates through a simple clock-and-data serial interface. Common module specifications list selectable 10 SPS and 80 SPS data output rates, allowing the system to prioritize either stable measurements or faster response according to the application.

With its compact size, low power consumption, high-resolution ADC, and simple digital interface, the module is suitable for Arduino, ESP32, STM32, Raspberry Pi Pico, RP2040, PIC, AVR, and other microcontroller-based pressure measurement systems.

Key Features

  • Pressure measurement range of 0 to 40kPa
  • Integrated HX710B precision ADC
  • 24-bit analog-to-digital conversion
  • Operates from 3.3V to 5V DC
  • Digital serial data output
  • Simple clock and data communication interface
  • Selectable 10 SPS and 80 SPS output rates
  • Low operating current
  • Compact PCB module design
  • Integrated pressure inlet port
  • Suitable for connection with flexible tubing
  • High sensitivity for low-pressure measurement
  • Suitable for air and compatible non-corrosive gases
  • Useful for differential and gauge pressure applications
  • Can be used for indirect water-level measurement
  • Suitable for pneumatic pressure monitoring
  • Easy interfacing with microcontrollers
  • Suitable for educational and experimental projects

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: Air Pressure Sensor Module
ADC IC: HX710B
Pressure Sensor Type: Piezoresistive Bridge-Type Pressure Sensor
Pressure Range: 0 to 40kPa
Equivalent Maximum Pressure: Approximately 5.8 PSI
Supply Voltage: 3.3V to 5V DC
ADC Resolution: 24-Bit
Interface Type: Two-Wire Clock and Data Serial Interface
Data Output Rate: 10 SPS or 80 SPS
Operating Current: Approximately 1.5mA on Common Versions
Pressure Input: Tube / Hose Connection Port
Suitable Medium: Clean, Dry, Non-Corrosive Gas
Operating Temperature: Approximately -40°C to +85°C
Module Size: Approximately 19mm × 18mm on Common Versions
Mounting Hole Diameter: Approximately 2mm
Calibration: Recommended for Accurate Pressure Measurement
Compatibility: Arduino UNO, Nano, Mega, ESP32, STM32, Raspberry Pi Pico, RP2040, PIC, AVR and other digital controllers.

Additional Resources

Air Pressure Sensor.PDF

FAQ

1. What is the HX710B Air Pressure Sensor Module used for?

The module is used for measuring low-range air pressure and differential pressure. It is suitable for pneumatic monitoring, breath-pressure sensing, vacuum experiments, leak detection, airflow-related projects, and indirect water-level measurement.

2. What is the pressure range of the HX710B module?

The commonly sold module is specified for a nominal pressure range of 0 to 40kPa, equivalent to approximately 5.8 PSI.

3. Can the HX710B Air Pressure Sensor be used with Arduino and ESP32?

Yes. The module can be interfaced with Arduino, ESP32, STM32, Raspberry Pi Pico, RP2040, PIC, AVR, and other controllers using its digital data and clock connections.

4. Can this module be used to measure water level?

Yes. It can be used for indirect water-level measurement by measuring air pressure related to the height of a liquid column. The pressure sensor itself should not be directly exposed to liquid unless the particular sensor version is specifically rated for it.

5. Does the HX710B module require calibration?

Yes. Calibration is recommended for accurate measurements because sensor offset and sensitivity can vary between individual modules. Using known pressure reference points allows raw ADC readings to be converted into meaningful pressure values.