MD-PS002 150KPa Vacuum Pressure Sensor

MD-PS002 150KPa Vacuum Pressure Sensor is a high-precision, low-cost piezoresistive pressure transducer designed for measuring absolute pressure in air and non-corrosive gas environments. This compact sensor utilizes an advanced silicon-based micro-electromechanical systems (MEMS) technology to convert physical pressure into a linear millivolt output signal. Consequently, it provides an ideal solution for developers who require accurate vacuum or positive pressure monitoring in space-constrained applications. Furthermore, its bridge-type internal architecture ensures high sensitivity and long-term stability. Therefore, you can easily integrate this module into medical equipment, automotive systems, and industrial pneumatic controllers to achieve reliable real-time pressure feedback.

Key Features:

• MEMS Technology: The sensor employs high-quality silicon piezoresistive chips, which offer superior reliability and repeatability compared to mechanical switches.
• Wide Measuring Range: It accurately detects absolute pressure from 0 KPa up to 150 KPa, covering both vacuum and low-pressure ranges.
• Linear Output: The device produces a consistent millivolt signal proportional to the applied pressure, simplifying the calibration process for analog-to-digital converters.
• High Sensitivity: It detects minute changes in air pressure, making it suitable for delicate medical and laboratory instrumentation.
• Compact Form Factor: The small footprint allows for seamless integration into portable electronic devices and high-density printed circuit boards.

Technical Specifications:

• Pressure Range: 0 to 150 KPa (Absolute Pressure)
• Input Voltage: ≤ 10 V DC (Typically 5 V DC Recommended)
• Input Impedance: 4 kΩ to 6 kΩ
• Output Impedance: 4 kΩ to 6 kΩ
• Full-Scale Output: 50 mV to 100 mV (Depending on excitation voltage)
• Accuracy: ±0.3% FS
• Operating Temperature: −40°C to +125°C
• Hysteresis: ±0.7% FS

Mechanical Specifications:

• Sensor Type: Piezoresistive Bridge Transducer
• Media Type: Air or non-corrosive gases only
• Package Style: Open bridge structure for direct air contact
• Material: Silicon chip on a ceramic base with protective coating

Dimensions:

• Overall Length: ≈ 6.8 mm
• Overall Width: ≈ 6.8 mm
• Height: ≈ 4.6 mm
• Pin Pitch: Standard 2.54 mm spacing for easy mounting

Pinout and Wiring:

• Pin 1 (GND): Connect to the ground of your excitation power supply.
• Pin 2 (Output+): Connect to the positive analog input of your differential amplifier or ADC.
• Pin 3 (VCC): Connect to a stable 5V or 10V DC power source.
• Pin 4 (Output-): Connect to the negative analog input of your differential amplifier.
• Wiring Note: However, because the output is in millivolts, you must use an instrumentation amplifier (like the HX711 or INA series) to boost the signal before processing it with a microcontroller.

Datasheet Reference:

• Download MD-PS002 Pressure Sensor Datasheet

Commonly Used in:

• Blood Pressure Monitors: Providing the critical time-sensitive pressure data required for electronic sphygmomanometers.
• Automotive Electronics: Monitoring tire pressure and intake manifold pressure in light-duty systems.
• Weather Stations: Measuring barometric pressure for localized atmospheric forecasting.

Applications:

• Vacuum Monitoring: Ensuring consistent suction levels in industrial vacuum pick-and-place machines.
• Leak Detection: Identifying pressure drops in sealed systems or gas containers.
• Pneumatic Control: Managing the pressure of small air pumps and actuators in robotics projects.
• Altitude Sensing: Estimating relative height based on barometric pressure changes in drones or climbers.

Equivalent Models:

• MPS20N0040D: A similar DIP-packaged pressure sensor, although it typically supports a lower pressure range of 40 KPa.
• XGZP Series: Various MEMS sensors from CFSensor that offer similar bridge outputs for gaseous media.
• BPM Series: Industrial-grade barometric modules that provide pre-calibrated digital outputs instead of raw analog millivolts.

Package Includes:

• 1 x MD-PS002 150KPa Vacuum Pressure Sensor Module