Ceramic Capacitive Pressure Sensor for Industrial Pressure Measurement

Modern industrial systems require pressure sensors that deliver high accuracy, excellent long-term stability, and reliable operation under demanding conditions. Ceramic capacitive pressure sensors have become a preferred solution for hydraulic systems, pneumatic equipment, compressors, refrigeration, and industrial automation due to their robust ceramic sensing element and superior overload capability.

NOIKE-AH manufactures high-performance Ceramic Capacitive Pressure Sensors designed to provide accurate and stable pressure measurement across a wide range of industrial applications.

How Does a Ceramic Capacitive Pressure Sensor Work?

A ceramic capacitive pressure sensor measures pressure by detecting changes in capacitance.

When pressure is applied to the ceramic diaphragm, the distance between the capacitor plates changes, causing the capacitance value to increase proportionally with the applied pressure.

The internal electronics convert this capacitance change into a precise electrical output such as:

• 4–20 mA

• 0–10 V

• RS485 (optional)

• Other customized industrial outputs

Because ceramic materials exhibit excellent elasticity and chemical resistance, the sensor maintains high measurement stability even after years of continuous operation.

Key Features

High Accuracy

• Accuracy classes available:

• ±0.1% FS

• ±0.2% FS

• ±0.5% FS

• Repeatability: ≤ ±0.01% FS

• Hysteresis: ≤ ±0.01% FS

• Linearity: ±0.2% FS or ±0.5% FS

Excellent Long-Term Stability

• Annual stability better than 0.1% Full Scale

• Outstanding measurement consistency

• Reduced recalibration frequency

Ideal for continuous industrial monitoring.

Superior Overload Resistance

The ceramic sensing element withstands significant pressure overload while maintaining measurement performance.

Benefits include:

• Longer service life

• Lower maintenance costs

• Improved operational reliability

Corrosion-Resistant Ceramic Diaphragm

The ceramic sensing surface offers excellent resistance to:

• Water

• Hydraulic oil

• Compressed air

• Mild chemicals

• Industrial process media

A flush diaphragm version is also available for measuring viscous, sticky, or particle-containing fluids.

Flexible Configuration

Available options include:

• Field-adjustable Zero

• Field-adjustable Span

• Integrated LED Display

• Multiple electrical outputs

• Custom pressure ranges

Technical Specifications

Environmental Performance

Designed for demanding industrial environments, the sensor offers:

• Temperature Coefficient: ≤ ±0.02% FS/K

• Long-Term Stability: Better than 0.1% FS per year

• Excellent Electromagnetic Interference (EMI) Resistance

• Stable performance under temperature fluctuations

These characteristics make it suitable for both indoor and outdoor industrial installations.

Typical Applications

The ceramic capacitive pressure sensor is suitable for measuring both liquid and gas pressure in a wide range of industries.

Typical applications include:

• Hydraulic Systems

• Pneumatic Systems

• Air Compressors

• Refrigeration Equipment

• HVAC Systems

• Steel Manufacturing

• Industrial Machinery

• Lifting Equipment

• Conveying Systems

• Process Automation

• Factory Automation

• OEM Equipment

Why Choose a Ceramic Capacitive Pressure Sensor?

Compared with conventional metal diaphragm pressure sensors, ceramic capacitive sensors offer several advantages:

• Higher overload capability

• Excellent corrosion resistance

• Better long-term stability

• Minimal drift

• High measurement accuracy

• Low maintenance requirements

• Long service life

These advantages make ceramic capacitive technology an excellent choice for industrial pressure monitoring where reliability and precision are critical.