MD-PS002 Absolute Pressure / Vacuum Sensor – High Accuracy & IoT-Ready

The MD-PS002 Vacuum & Absolute Pressure Sensor is a compact, high-precision measurement module capable of detecting extremely small pressure changes in air, gas, suction pumps, and closed chambers. Designed for vacuum measurement, absolute pressure analysis, leak detection, airflow monitoring, and high-sensitivity robotics applications, the MD-PS002 is widely used in industrial automation, laboratory systems, portable sensing devices, and IoT environments.

This sensor features a built-in MEMS pressure sensing element combined with a stable signal-amplifying circuit. The module delivers analog voltage proportional to pressure, making it compatible with Arduino, ESP32, NodeMcu, Raspberry Pi (ADC required), STM32 controllers, and industrial data logging systems.

Unlike differential sensors, the MD-PS002 measures absolute pressure, meaning it references pressure relative to a perfect vacuum (0 kPa). This makes it extremely accurate for vacuum-level monitoring, barometric measurements, sealed-enclosure pressure tracking, and controlled atmospheric systems.

⭐ How MD-PS002 Works (Technical Insight)

The module uses a MEMS absolute pressure chip mounted on a ceramic base. It measures the pressure exerted directly on the sensor membrane. The internal amplifier boosts the millivolt-level signal into a stable analog output (0.5V–4.5V typical) based on the measured pressure.

This output can be read by the ADC of any microcontroller to calculate:

• Absolute Air Pressure (kPa)

• Vacuum Strength (negative pressure)

• Chamber Pressure Variation

• Atmospheric Stability

• Leakage Rate

The sensor responds quickly, making it suitable for real-time monitoring systems.

⭐ Key Features

• High-sensitivity absolute pressure & vacuum measurement

• Stable analog voltage output

• Fast, real-time pressure response

• MEMS sensor with internal amplification

• Excellent long-term stability & reliability

• Works with air and non-corrosive gases

• Compatible with Arduino, ESP32, NodeMcu, Raspberry Pi (with ADC)

• Compact module for easy integration

⭐ Technical Specifications

⭐ Applications & Use Cases

🏭 Industrial & Commercial

• Vacuum pump monitoring

• HVAC pressure analysis

• Closed chamber pressure control

• Pneumatic & suction systems

🤖 Robotics & Automation

• Air-pressure-based control feedback

• Gripper suction measurement

• Robotic environmental sensing

🧪 Laboratory & R&D

• Barometric experiments

• Pressure-controlled chambers

• Leak detection systems

🌪 IoT & Smart Systems

• Weather sensing nodes

• Remote environmental monitoring

• Smart vacuum tracking systems

⭐ Usage & Wiring Guide

Pin Connections

• VCC → 3.3V or 5V (depending on board version)

• GND → Ground

• OUT → Analog Input (A0)

Platform Compatibility

• Arduino Boards:
  https://electroway.org/product-category/arduino-and-accessories/arduino-boards/

• NodeMcu / IoT Modules:
  https://electroway.org/product-category/iot-and-smart-solutions/iot-modules/nodemcu/

• Electronics Components:
  https://electroway.org/product-category/electronics-components/

Steps to Use

1. Connect the sensor to your microcontroller’s analog pin.

2. Read the analog output (0.5–4.5V).

3. Convert voltage to pressure using calibration formula (varies by version).

4. Display readings on serial monitor, LCD, or IoT dashboard.

⭐ Precautions

• Do NOT use with corrosive or liquid media.

• Use proper filtering for noisy power supplies.

• Keep sensor vertically stable for maximum accuracy.

• Avoid pressure spikes beyond rated capacity.

• Calibrate in your environment for precise measurements.

⭐ YouTube Tutorial Link

Watch Video:https://www.youtube.com/watch?v=cHl7D6_UWo8

4. Product Summary

The MD-PS002 Vacuum & Absolute Pressure Sensor is an ideal solution for high-accuracy air pressure measurement in IoT devices, automation systems, laboratory control equipment, and industrial vacuum analysis. With its compact design, fast response, and analog output, it offers easy integration into Arduino and microcontroller-based projects.