Pressure Sensors & Transducers

Definition: Devices that convert pressure (gas or liquid) into an electrical signal.

Types:

• Strain Gauge: Measures deformation under pressure.
• Piezoresistive: Uses semiconductor materials; high sensitivity.
• Capacitive: Detects pressure via capacitance change; low power.
• Piezoelectric: Generates charge in response to dynamic pressure.
• MEMS: Miniaturized sensors for compact applications.

Output Types:

Analog: 0–5V, 0.5–4.5V ratiometric, or 4–20mA.
Digital: I²C, SPI interfaces with integrated ADC.

Applications:

Industrial control, automotive (TPMS, engine), medical devices, HVAC, aerospace.

Key Parameters:

Range, accuracy, supply voltage, temperature range, media compatibility.