Barometric Pressure Sensor Module 3.3V-5V Supply voltage 0-40KPa Pressure Range

Barometric Pressure Sensor Module 3.3V–5V (0–40KPa Range)

The Barometric Pressure Sensor Module (0–40KPa) is a compact and high-precision sensing solution designed to measure low-pressure air or fluid levels in a wide range of applications. Commonly based on chips like the HX710B air pressure sensor module, this module combines a piezoresistive pressure sensor with a high-resolution analog-to-digital converter for accurate and stable readings.

This module operates with a supply voltage of 3.3V to 5V, making it fully compatible with popular microcontrollers such as Arduino, ESP32, and Raspberry Pi. It measures pressure in the range of 0 to 40KPa, which is ideal for applications like water level detection, airflow monitoring, and environmental sensing.

The sensor works by converting pressure changes into electrical signals using a Wheatstone bridge structure. These signals are then amplified and digitized through an onboard ADC, providing precise output data. Some versions offer digital output (via serial interface), while others provide analog output that requires external ADC processing.

Another key advantage of this module is its ability to connect to a small tube (typically 2.5mm), allowing it to measure fluid levels or differential pressure in tanks and pipelines. This makes it highly versatile for both air and liquid-based measurements.

With its compact size, low power consumption, and high accuracy, this sensor is widely used in embedded systems, IoT devices, and industrial monitoring setups.

Features:

• Measures pressure from 0 to 40KPa

• Wide supply voltage: 3.3V to 5V

• High precision with built-in ADC (up to 24-bit resolution)

• Digital or analog output options

• Supports tube connection for fluid/air pressure measurement

• Low power consumption, ideal for portable systems

• Compact size for easy integration

• Stable performance with low temperature drift

Specifications:

• Pressure Range: 0 – 40KPa

• Supply Voltage: 3.3V – 5V

• Output Type: Digital (serial) or Analog (varies by module)

• Sensor Type: Piezoresistive pressure sensor

• Resolution: High (24-bit ADC in HX710B versions)

• Operating Temperature: -35°C to +85°C

• Interface: SPI / Serial / Analog (depending on model)

• Dimensions: ~19mm × 18mm

Applications:

• Water level detection systems

• Air pressure and vacuum measurement

• Environmental monitoring stations

• Medical and respiratory devices

• Industrial automation systems

• Weather monitoring and data logging

• IoT-based sensing projects