Flush Diaphragm Pressure Sensor - Capacitive Pressure Sensor for Accurate Measurement

Main Features

Superior overload resistance, with burst capability of 5~10X.
Very low temperature drift, less than 0.015%FS/°C.
Wide temperature adaptability, from -40°C to 150°C.
Long service life, with pressure cycle life exceeding 5 million cycles.
Fast response, with pressure response less than 2ms.
Wide pressure range adaptability, meeting 0.5~10.0Mpa.
Good compatibility with working media, compatible with air, engine oil, brake fluid, gasoline, diesel, and air conditioning refrigerants.
Very low hysteresis with excellent long-term stability.
Non-linear product compatible with conditioning chips, with a good fit.
Available in outer diameters of 21mm and 18mm.
Manufactured according to IATF16949 standards and quality control, with reliability tests according to AEC-Q200 standards.
Customizable according to customer requirements.

Product Parameter

Parameters	Electrical characterisitics
Series Name	D21A/D18A
Type	Capacitive
Test Pressure Type	Gauge /absolute/ sealed gauge
Size (Length x width xheight)	21x4.（)mm/18x3.()mm (height customizable)
Operating temperature	‘-40 ℃~150℃
Storage temperature	’-40℃~150 ℃
Hysteresis & repeatability	0.5~1.0Mpa : ＜±0.015 %FS/℃ ；
Hysteresis & repeatability	≥ 1.0Mpa : ≤ ± 0.010%FS/℃
Nonlinearity	±0.20% FS
Temperature Characteristics	6.0%~9.0% first- order approximation
	≤ 0.5% second-order approximation
	≤0.2 third -order approximation
Sensitivity	= Full-scale capacitance value - Zero-pressure capacitance value
Response time	＜ 2mS
Cycle life	＞5 million pressure cycles

Product Range

D21A，D18A
φ21×4.()mm/φ18×3.()mm Series
Product model	Range/P(Bar)	Overload pressure	Burst pressure	Thickness H(mm)	Initial Capacity (pF)	Span Capacity(pF)	Pressure sensing diameter
HXL-D21A005	5	2×	5×	4.25±0.05	20±2	4.5-7.5	11.6
HXL-D21A010	10	2×	5×	4.35±0.05	20±2	4.5-7.5	11.6
HXLD21A020	20	2×	5×	4.45±0.05	20±2	4.5-7.5	11
HXL-D21A035	35	1.5×	3×	4.58±0.05	20±2	4.5-7.5	11
HXL-D21A045	45	1.5×	2×	4.74±0.05	20±2	4.5-7.5	11
HXL-D21A070	70	1.5×	2×	4.78±0.05	20±2	4.5-7.5	10
HXL-D21A100	100	1.5×	2×	4.85±0.05	20±2	4.5-7.5	10
HXL-D18A005	5	2×	5×	3.35±0.05	15±2	3.5-6.5	10
HXL-D18A010	10	2×	5×	3.45±0.05	15±2	3.5-6.5	10
HXL-D18A020	20	2×	5×	3.53±0.05	15±2	3.5-6.5	10
HXL-D18A035	35	1.5×	3×	3.65±0.05	15±2	3.5-6.5	10
HXL-D18A050	50	1.5×	2×	3.78±0.05	15±2	3.5-6.5	10
HXL-D18A070	70	1.5×	2×	3.87±0.05	15±2	3.5-6.5	9.5
HXL-D18A100	100	1.5×	2×	3.95±0.05	15±2	3.5-6.5	9.5

High-Precision Capacitive Technology
The D21A/D18A uses advanced capacitive technology for precise pressure measurement, delivering highly accurate readings in applications such as manifold absolute pressure sensor and best tire pressure gauge. The capacitive sensing mechanism ensures minimal drift over time and consistent performance.

Flush Diaphragm Design for Harsh Environments
Designed with a flush diaphragm, this pressure sensor can handle tough industrial and automotive environments. This feature makes it especially effective in situations where traditional pressure sensors might fail, such as engine oil pressure sensors or pressure sensor for air conditioners where cleanliness and ease of maintenance are crucial.

Wide Range of Applications
The D21A/D18A is versatile and can be used in multiple industries, from automotive to food and beverage production. Whether you're integrating it into a pressure sensor for coffee machines or using it in HVAC systems, its adaptability is a key feature.

Durable and Reliable
Made from high-quality materials, the D21A/D18A offers excellent resistance to chemicals, temperature fluctuations, and physical stress, ensuring long-lasting reliability in even the most demanding environments.

About Us

Huaxinlian Technology is a professional and innovative company dedicated to the design, manufacturing, and supply of high-precision ceramic pressure sensors. Established with the aim of providing reliable, durable, and highly accurate pressure sensing solutions, we have been a trusted partner for industries such as automotive, HVAC, process control, and industrial automation for over 7 years.

Our main products include ceramic pressure transducers, sensor cores, modules, and transmitters, which are widely used in various fields to monitor and measure pressure in both harsh and routine environments. We have invested heavily in our manufacturing facility, which is equipped with state-of-the-art automated production lines, ensuring that our products meet the highest quality standards.

Why Choose Us

Over 7 years of industry experience
Advanced automated production lines
25+ patents and global certifications
Precision and consistent quality
Strong R&D and innovation focus

FAQ

1.Who are we?
Huaxinlian Technology is a leading manufacturer and supplier of ceramic pressure sensors. We specialize in designing and producing high-precision ceramic pressure transducers, sensor cores, and modules. Our products are widely used across various industries, including automotive, HVAC, process control, and more.

2.How can we guarantee quality?
Quality assurance is a cornerstone of our operations. We adopt advanced automated production lines to ensure consistency and high precision in manufacturing. Each product undergoes rigorous testing at every stage of production to meet international standards. We also hold global certifications, including ISO 9001 and IATF 16949, to ensure that our products comply with the highest quality standards.

3.What can you buy from us?
We offer a wide range of ceramic pressure sensing products, including:

Pressure Transducers: These sensors convert pressure into an electrical signal, providing accurate and real-time pressure measurements for a variety of industrial applications.
Pressure Sensor Cores: Our sensor cores are the heart of pressure sensing technology, providing reliable and precise data for a range of pressure monitoring systems.
Pressure Modules: These modules are integrated systems that combine sensors, electronics, and output interfaces to provide seamless pressure sensing solutions.
Pressure Transmitters: Used for transmitting accurate pressure data to remote monitoring systems, our pressure transmitters are ideal for applications requiring long-distance data transmission.
Custom Solutions: We also provide custom-designed solutions tailored to specific customer requirements, whether for unique environments, sizes, or specifications.

4.Why should you buy from us instead of other suppliers?
There are several reasons why Huaxinlian Technology stands out from other suppliers:

Proven Industry Expertise: With over 7 years of experience in the pressure sensor industry, we have developed a deep understanding of customer needs and technical challenges, ensuring we deliver the best solutions.
Cutting-Edge Technology: We leverage advanced automated production techniques and continuous innovation in sensor design to provide high-performance products that meet the evolving needs of our customers.
Reliable Quality: Our commitment to quality is reinforced by our adherence to global certifications (ISO 9001, IATF 16949) and strict testing protocols, ensuring that every sensor we produce meets the highest standards of precision and durability.
Comprehensive Range: We offer a diverse range of products, from standard solutions to custom-tailored designs, ensuring we can meet the specific needs of various industries and applications.
Excellent Customer Support: Our team is dedicated to providing exceptional customer service, offering technical support, quick response times, and a focus on long-term partnerships.

5.What services can we provide?
We offer a full suite of services to ensure that our customers receive the best possible experience:

OEM & ODM Services: We provide Original Equipment Manufacturing (OEM) and Original Design Manufacturing (ODM) services, allowing customers to get customized products that match their specific technical and design requirements.
Research and Development Support: Our in-house R&D team works closely with customers to develop new solutions and refine existing products, ensuring that we can address unique challenges and provide cutting-edge technology.
Testing and Calibration: We offer thorough testing and calibration services to ensure that every product meets the required specifications for performance and accuracy.
After-Sales Support: Our after-sales support includes troubleshooting, maintenance guidance, and replacement services, ensuring that your products continue to perform reliably long after purchase.
Consultation Services: We provide expert consultation services to help you choose the right products for your specific applications, ensuring that you make informed decisions that will enhance the efficiency and safety of your operations.

Ceramic Capacitive Pressure Sensor Anti Corrosive Liquid Level Transmitter I2C Output Pressure Sensor 21*(4.25-4.85)mm/18x(3.35-3.95)mm D21A_D18A

Main Features

FAQ