Piezoresistive Pressure Sensors for Accurate Measurement

The Piezoresistive Pressure Sensor is a high-accuracy pressure measurement device designed for precise monitoring of gas or liquid pressure across a wide range of industrial, laboratory, and research applications. Based on proven piezoresistive sensing technology, this sensor converts applied pressure into a stable electrical signal, enabling reliable and repeatable pressure measurement in both static and dynamic conditions.

Piezoresistive pressure sensors operate by detecting changes in electrical resistance that occur when pressure is applied to a sensing diaphragm. When pressure deforms the diaphragm, integrated piezoresistive elements experience mechanical strain, causing a proportional change in resistance. This change is measured using a Wheatstone bridge configuration and converted into a precise electrical output that represents the applied pressure.

Measurement Principle

The key advantage of piezoresistive technology lies in its high sensitivity, particularly at low pressure ranges. Unlike capacitive or piezoelectric pressure sensors, piezoresistive sensors are capable of accurately measuring static and slowly varying pressures, making them ideal for applications where stable, absolute, gauge, or differential pressure data is required.

Because the output signal is directly proportional to pressure, piezoresistive sensors offer excellent linearity and repeatability. This makes them well suited for calibration tasks, system validation, and closed-loop control applications.

Key Characteristics

Piezoresistive pressure sensors provide high resolution, fast response time, and consistent long-term stability. They are available in a wide range of pressure ratings, allowing selection for low-pressure, medium-pressure, or higher-pressure applications. Compact mechanical designs enable easy integration into test rigs, pipelines, chambers, and embedded systems.

The robust sensor construction ensures reliable operation in environments where temperature variation, vibration, and continuous operation are present. With predictable output behavior, these sensors are commonly used in both real-time monitoring and data logging applications.

Typical Applications

Piezoresistive pressure sensors are widely used across multiple industries, including:

• Industrial Process Monitoring: Measuring pressure in pipelines, vessels, and fluid systems

• Laboratory & Calibration Systems: Supporting precise pressure control and reference measurements

• Automotive & Transportation: Monitoring hydraulic, pneumatic, and engine-related pressures

• Aerospace & Defense: Pressure measurement in test chambers and system validation setups

• Research & Education: Experimental studies involving fluid dynamics and pressure behavior

Their ability to accurately measure static pressure makes them especially valuable in applications where pressure stability and resolution are critical.

Integration with Measurement Systems

Piezoresistive pressure sensors are designed for seamless integration with Dynatronic data acquisition and monitoring systems. When synchronized with other parameters such as temperature, flow, vibration, or force, pressure data provides essential insight into system performance and operating conditions. This multi-parameter approach enables deeper analysis and more informed engineering decisions.

Reliable Pressure Measurement You Can Trust

By combining high sensitivity, stable output, and robust construction, piezoresistive pressure sensors deliver dependable pressure data across a wide range of applications. They are a practical and trusted solution for engineers who require accurate, repeatable pressure measurement to support testing, monitoring, and system optimization.