High Sensitivity Pressure Transducer , High Output Piezoresistive Pressure Sensors

Price Negotiable

Price: Negotiable

MOQ: 1Set

Delivery Time: 5-8 work days

Brand: QINWEIYB

Product Description

High-Sensitivity And High-Output Piezoresistive Pressure Transmitter

Features and Advantages

Extremely High Precision and Stability:
- Modern piezoresistive sensors can achieve ±0.075% or even higher accuracy.
- They have low long-term drift and good repeatability, making them the cornerstone of high-performance industrial applications.
Excellent Frequency Response:
- The silicon diaphragm is highly rigid and lightweight, providing extremely fast dynamic response, which is suitable for measuring rapidly changing pressures, including pulsating and shock pressures.
High Sensitivity and High Output:
- The piezoresistive effect is significant, resulting in a strong raw signal (mV/V), which is beneficial for signal processing and improving the signal-to-noise ratio.
Miniaturization and Low Cost:
- Thanks to mature MEMS (Micro-Electro-Mechanical Systems) manufacturing technology, piezoresistive silicon chips can be made very small and produced in large quantities at a very low cost. This makes the technology applicable in a wide range of devices, from industrial transmitters to automotive sensors and barometers in smartphones.
Wide Measurement Range:
- By designing silicon diaphragms of different thicknesses and structures, sensors can be manufactured to measure pressures ranging from a few centimeters of water column for micro-pressure to hundreds of megapascals for ultra-high pressure.

Typical application scenarios

Industrial process control (main market): Pressure/differential pressure/absolute pressure measurement for pipelines, tanks, and reactors in industries such as petrochemicals, power. A variety of transmitter forms: general pressure, differential pressure, absolute pressure, remote flange type, etc.
Automotive electronics: Engine manifold absolute pressure, turbocharger pressure, fuel pressure, brake pressure, tire pressure monitoring.
Medical equipment: Blood pressure monitors, pressure monitoring for ventilators, infusion pumps, dialysis machines.
Consumer electronics: Barometers in smart phones/watches (for altitude and indoor positioning assistance), altimeters in drones.
HVAC and fluid control: Static pressure in air ducts, pressure differential across filters, pump pressure.
Test and measurement: Laboratory instruments, data acquisition systems, calibration equipment.

Comparison with Other Mainstream Pressure Sensing Technologies

Characteristics	Strain Gauge	Capacitive	Resonant (e.g., Silicon Resonant)
Core Principle	Pressure changes resistance value	Pressure changes distance between capacitor plates	Pressure changes the natural frequency of the vibrating element
Accuracy	Very high (±0.075% typical)	High (±0.1% typical)	Exceptionally high (±0.02% or better)
Long-term Stability	Excellent	Excellent	Outstanding (minimal long-term drift)
Dynamic Response	Extremely fast	Fast	Relatively slow (limited by vibration frequency)
Overpressure/Shock Resistance	Good	Average (large diaphragm travel makes it prone to damage)	Good
Output Signal	Analog (mV/V)	Analog (capacitance change)	Digital (frequency change)
Power Consumption	Low	Low	Relatively high
Cost	Low (especially in large quantities)	Moderate	High
Main Applications	General industrial, automotive, consumer electronics	Differential pressure, liquid level, low pressure	Trade measurement, high-precision reference, critical processes

The piezoresistive pressure transmitter is the "backbone" and "technical king" in the field of pressure measurement. It perfectly combines the precision of semiconductor technology, the low cost of large-scale production, and outstanding dynamic and static performance.