Nanjing Wotian Technology Co., Ltd.

Pressure sensor manufacturing for 20 years.

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Important Reasons To Choose Ceramic Pressure Transmitters

From: Issued date 2024.11.27 Back

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Ceramic piezoresistive, ceramic as a carrier have ceramic capacitor and ceramic piezoresistive, ceramic piezoresistive 100kPa below and 10MPa above are not suitable for pressure transmitter.

 

The basic principle of ceramic piezoresistive is to use Wheatstone bridge, and silicon piezoresistive is the same principle, by the external pressure, the strain produces a change in the resistance of the bridge.


Vector

Strain Material

Key Changes

Magnitude Of Change

Framework

Drawbacks

Vantage

Ceramics

Thick Film Paste

Length Dimension

Few

Simpler

Moisture Absorption, Fragile, Low Precision, Low Sensitivity

Simple Structure

Silicon

Diffused Silicon

Resistivity

Wide

Filled with Oil

Large Temperature Drift And Complex Structure

Wide Range, High Accuracy, High Sensitivity, Weldable



In conclusion, the performance of the ceramic-based, oil-filled WT sensor is impressive. It offers a wide pressure range from -100 kPa to 100 MPa, compared to the narrower range of 100 kPa to 10 MPa typically achievable by ceramic sensors. Additionally, it provides high precision with an accuracy of 0.25 to 0.5%, while ceramic sensors generally have an accuracy of around 1%. The sensor also demonstrates high sensitivity, can be welded for various applications, and does not absorb moisture, making it highly reliable and durable.