What Are Pressure Sensors? Working Principle and Usage Areas
What Are Pressure Sensors? Working Principle and Usage Areas
Components that detect pressure of gases or liquids and convert it to electrical signal.
Used in many areas such as industrial automation, automotive, medical, HVAC.
Correct measurement is critical for safe operation and process control.
How Does It Work?Sensing element measures pressure, converts to electrical output. Analog voltage / current (0-10V, 4-20mA) or digital (I2C, SPI, CANbus) output.Basic Principles:Piezoresistive (resistance change)Capacitive (diaphragm capacitance change)Piezoelectric (pressure-dependent charge)
Pressure Sensor Types:Absolute: According to absolute vacuum (0 hPa) reference. Independent from atmospheric pressure. Barometer, altitude measurement.Gauge / Relative: According to atmospheric pressure.
Most common type. Tire, hydraulic.Differential: Measures difference between two points P1-P2. Filter tracking, flow measurement.
Usage Areas:Industrial (process control, pneumatic, hydraulic), Automotive (tire, engine oil, fuel, brake pressure), Medical (ventilator, blood pressure, infusion), HVAC (air flow, duct pressure, filter tracking, air conditioning), Measurement / test, IoT smart monitoring.
7 Criteria When Choosing:Measurement range (0-10 bar / 0-1000 psi), sensitivity (±0.1% - 1% FS), output type (analog / digital), supply voltage, operating temperature, material compatibility (pressure medium), mounting / size, IP protection (IP67 / IP68), response time, long-term supply continuity.Technical Diagram: Pressure Input (P) -> Piezoresistive Sensing Element (diaphragm) -> Electronic Circuit Amplifier -> Housing IP67 -> Output 4-20mA
Comparison Table
For determining electronic components needed in signal generation processes and evaluating supply options, you can contact Karina Elektronik, and reach detailed information about our product and supply solutions at https://www.karinaelektronik.com
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