capacitive pressure sensor

Capacitive Pressure Sensor - Industrial-Grade Precision by Qintai

Xi'an Qintai Automotive Emission Technology Co. Ltd. brings you industrial-grade capacitive pressure sensor solutions engineered for excellence. Since 2001, we've specialized in manufacturing high-precision sensors with exceptional reliability. Our products achieve ±0.1% full-scale accuracy and offer remarkable 10-15 year operational lifespan in demanding environments.

With an annual production capacity exceeding two million sensors and 86 dedicated R&D technicians, we deliver enterprise-level performance. Our sensors feature advanced temperature compensation technology and electromagnetic interference shielding. As China's No. 1 market leader supplying Weichai Power, Yuchai Power, and Quanchai Power, we guarantee quality backed by ISO9001, IATF16949, and 58 invention patents.

What Makes Our Capacitive Pressure Sensor Different?

Advanced Working Principle

Our sensors operate on the variable capacitance principle. They consist of a flexible diaphragm positioned parallel to a fixed electrode. A dielectric material like silicone or ceramic separates these components.

When pressure is applied, the diaphragm deflects. This changes the distance between electrodes. The capacitance formula C = ε₀εᵣA/d governs this operation, where reduced distance increases capacitance proportionally.

This design eliminates moving mechanical parts. You get exceptional durability and minimal maintenance requirements. Unlike piezoresistive alternatives, our capacitive sensors resist temperature fluctuations better.

Superior Technical Advantages

High Precision Measurement

You benefit from ±0.1% full-scale accuracy in most applications. Our sensors detect minute pressure changes with exceptional sensitivity. This precision suits critical applications requiring consistent performance.

Temperature Stability

We integrate advanced temperature compensation techniques into every sensor. Your measurements remain accurate across extreme environmental conditions. The dielectric materials we select ensure stable operation from -40°C to +125°C.

Low Power Consumption

Our sensors consume minimal energy, making them perfect for battery-powered IoT devices. You extend operational time while maintaining measurement quality.

Long Service Life

Expect 10-15 years of reliable operation with proper installation. The absence of mechanical wear points ensures consistent performance throughout the sensor's lifespan.

Technical Specifications

Parameter	Specification
Model	QS-P105F
Pressure Range	-1/0bar, 2bar, 5bar, 10bar, 20bar, 30bar, 40bar, 50bar, 80bar, 100bar, 200bar, 400bar, 600bar
Sensitivity	2...4.0 mV/V
Non-linearity	0.3% FS
Zero Temperature Drift	<0.03% FS/°C (2-50bar), <0.04% FS/°C (50-600bar)
Zero Shift	<0.2 mV/V
Supply Voltage	2...30 VDC
Zero Output	±0.2 mV/V (23℃)
Safety Overload	200% FS
Comprehensive Accuracy	≤±0.5% FS
Diaphragm Material	96% Al2O3
Bridge Resistance	11±30% kΩ
Operating Temperature	-40°C to 135°C

Signal Processing Technology

Our sensors incorporate specialized integrated circuits. These amplify and linearize the small capacitance variations. You receive clean, accurate signals ready for your control systems.

We employ Wheatstone bridge configurations for voltage conversion. Capacitance-to-digital converters eliminate ambient noise interference. Temperature drift compensation algorithms ensure measurement stability.

Digital output options include I2C, SPI, and CAN bus protocols. You integrate our sensors seamlessly into your existing systems.

Key Applications

Car Industry

Your tire weight checking frameworks (TPMS) pick up unwavering quality with our sensors. They perform precisely beneath vibration and temperature extremes. Diesel motor SCR aftertreatment frameworks moreover advantage from our exactness measurement.

Healthcare Equipment

Medical respirators require tried and true weight detecting. Our low-power, high-accuracy sensors meet rigid restorative gadget benchmarks. You guarantee persistent security with reliable execution.

Industrial Automation

Process control systems demand stable measurements. Our capacitive pressure sensors withstand harsh industrial environments while maintaining accuracy. Chemical exposure and temperature variations don't compromise performance.

Consumer Electronics

Touch-sensitive devices rely on capacitive sensing technology. We provide the precision needed for responsive user interfaces.

Why Choose Qintai?

Independent R&D Capabilities

Our 86-member specialized group persistently innovates. We create exclusive advances that improve sensor execution. You get to cutting-edge arrangements sponsored by 58 development patents.

China's Driving OEM Supplier

We rank No. 1 in advertise share among Chinese car providers. Major control framework producers believe our quality. This organization approves our commitment to excellence.

Comprehensive OEM/ODM Services

From starting plan to mass generation, we bolster your vision. Our group collaborates with you to create custom arrangements. You get sensors custom-made absolutely to your application requirements.

Flexible Customization Support

Standard details do not continuously fit interesting applications. We adjust weight ranges, yield signals, and physical measurements. Your particular needs drive our building arrangements.

Certifications

Our Partners

We proudly serve industry leaders including Weichai Power, Yuchai Power, and Quanchai Power. These partnerships represent our commitment to quality and reliability.

Global automotive manufacturers depend on our sensor technology. Their trust reflects our consistent performance and innovation.

Exhibition & Global Market Presence

Qintai maintains active participation in international automotive exhibitions. We showcase innovations at major industry events across Asia, Europe, and North America.

Our global footprint extends through distribution networks on five continents. You access local support backed by our headquarters expertise in Xi'an, China.

Warehouse & Logistics

Our cutting edge warehousing office guarantees stock accessibility. We keep up key stock levels for quick arrange fulfillment.

Advanced coordinations administration tracks your shipment from production line to goal. You get real-time upgrades all through the conveyance prepare. Our organizations with driving carriers ensure secure, convenient entry.

Packaging & Shipment

Each sensor gets defensive bundling outlined for secure transportation. Anti-static materials avoid harm amid dealing with. Moisture-resistant holders secure items in different climates.

We customize bundling concurring to your arrange volume and goal prerequisites. Bulk shipments utilize strengthened beds with secure strapping. Person units come in labeled boxes with taking care of instructions.

Documentation goes with each shipment for smooth traditions clearance. You get following data instantly upon celerity.

Frequently Asked Questions

What makes the items more precise than other types?

The variable capacitance rule gives remarkable affectability to little weight changes. Our ±0.1% precision stems from progressed flag preparing and temperature emolument. The nonappearance of mechanical wear keeps up calibration longer than resistive alternatives.

Can these sensors withstand unforgiving car environments?

Absolutely. Our sensors work dependably from -40°C to +125°C with IP67/IP69K assurance. They stand up to vibration, chemical introduction, and mugginess. This toughness makes them perfect for motor compartments and deplete systems.

How do you minimize electromagnetic interference?

We consolidate protecting strategies and appropriate establishing in the sensor plan. Specialized sifting circuits dispose of commotion from the estimation flag. Your readings stay steady indeed close high-power electrical components.

What customization alternatives are available?

We alter weight ranges from 0-1 bar to 0-600 bar based on your needs. Yield flag sorts, connector styles, and physical measurements are flexible. Our building group works with you to create the idealize solution.

How long does conveyance ordinarily take?

Standard items dispatch inside 7-10 trade days. Custom orders require 4-6 weeks depending on determination complexity. We give nitty gritty timelines amid the citation process.

What certifications do your sensors hold?

Our items carry ISO9001, IATF16949, CMC, Ex, UL, CE, REACH, and RoHS certifications. These approve our commitment to quality and natural obligation. You get documentation with each arrange.

Contact Us for Your Pressure Sensing Solution

Ready to experience industrial-grade precision with capacitive pressure sensor? Contact us today at info@qt-sensor.com for customized solutions and competitive quotations.