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Ceramic Membrane Pressure Sensor
Operating principle
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The ceramic membrane deforms when subjected to pressure (liquid or gas).
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This deformation is measured by a piezoresistive (or capacitive) layer deposited on the membrane.
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The change in resistance or capacitance is converted into an electrical signal proportional to the applied pressure.
Ceramic Membrane Pressure Sensor
Ceramic Membrane Pressure Sensor
Operating principle
-
The ceramic membrane deforms when subjected to pressure (liquid or gas).
-
This deformation is measured by a piezoresistive (or capacitive) layer deposited on the membrane.
-
The change in resistance or capacitance is converted into an electrical signal proportional to the applied pressure.
€0.00
Tax included
Construction
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Ceramic membrane (usually alumina):
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Very rigid and chemically inert.
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Thickness adjusted according to the pressure range (typically 0–600 bar).
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Sensitive layers:
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Piezoresistive: Wheatstone bridge printed on the membrane.
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Capacitive: variation of capacitance between membrane and substrate.
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Housing / body:
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Protects the sensing element and provides mechanical mounting.
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Electrical output (wires, connector).
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Advantages
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High mechanical strength (less risk of rupture compared to metallic membranes).
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Chemical stability: resistant to corrosion, solvents, aggressive media.
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High accuracy and low drift.
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Low sensitivity to thermal shocks and temporary overpressure.
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Easy to clean → suitable for food, pharmaceutical and water applications.
Limitations
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Less flexible than metallic membranes → smaller deformation, requiring more sensitive electronics.
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Can be fragile under direct mechanical shocks.
Applications
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Water industry (pumps, tanks, treatment plants).
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Food industry (level measurement through hydrostatic pressure).
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Pharmaceutical and medical fields.
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Chemical processes.
