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The DEF Sensor is an essential component in modern emission control systems, ensuring accurate monitoring of Diesel Exhaust Fluid (DEF), also known as AdBlue, in Selective Catalytic Reduction (SCR) applications. As a key Diesel Exhaust Fluid Sensor, it measures fluid level, concentration, and temperature to maintain optimal NOx reduction performance. By delivering precise real-time data, these sensors help diesel vehicles meet global emission standards such as Euro 6 and China VI.
Built for durability, our DEF Sensors feature corrosion-resistant materials and advanced sensing technologies that ensure reliable performance in heavy-duty trucks, buses, and construction machinery.
In an SCR system, the DEF Sensor continuously monitors the DEF tank’s condition and transmits data to the engine control unit (ECU). Working alongside NOx and temperature sensors, it ensures the correct amount of DEF is injected into the exhaust stream for efficient NOx conversion.
These sensors use multiple detection principles, including temperature, pressure, conductivity, and ultrasonic measurement, to provide accurate readings of DEF level and quality. The ECU then adjusts injection strategies based on these inputs, optimizing emission control and fuel efficiency across various conditions.
For more details on how our smart sensor technology enhances emission control, visit our sensor technology insights page.
Our DEF Sensors are engineered for precision and long-term reliability. Each AdBlue Sensor is designed to resist corrosion while maintaining measurement stability over extended service intervals. With high-accuracy detection circuits and robust housings, they deliver dependable performance even under extreme temperature and vibration conditions.
Corrosion-resistant materials for harsh environments
High-accuracy measurement of DEF level and concentration
OEM-grade reliability and compliance with Euro 6, China VI, and US EPA Tier 3 standards
Long service life and consistent performance in demanding applications
These strengths make Zhejiang Kreation Electronic Technology Co., Ltd. a trusted partner for OEMs seeking emission solutions that meet global environmental regulations.
We offer a range of DEF Sensor types to suit different application needs, including DEF level sensors, DEF quality sensors, and integrated multi-function sensors. Each type is available with various mounting and signal output configurations for seamless integration with engine management systems.
| Sensor Type | Main Function | Typical Application |
|---|---|---|
| DEF Level Sensor | Monitors fluid level in DEF tank | Heavy-duty trucks, buses |
| DEF Quality Sensor | Measures urea concentration and fluid purity | Agricultural and construction machinery |
| Integrated Multi-function Sensor | Combines level, temperature, and quality measurement | Advanced SCR systems |
Each configuration ensures compatibility with diverse diesel engine models and aftertreatment systems, providing flexible integration and reliable operation.
The DEF Sensor is widely used in diesel-powered vehicles and industrial equipment to ensure proper DEF consumption, optimal catalyst performance, and emission compliance. Typical applications include:
Heavy-duty trucks and long-haul vehicles
Public transport and city buses
Agricultural and construction machinery
Industrial diesel generators
When combined with our NOx and exhaust gas temperature sensors, DEF Sensors form a complete emission control network. Learn more about system applications on our sensor applications page.
As an experienced OEM supplier, we provide extensive customization options for DEF Sensor solutions. Our model-based software development and ECU integration expertise enable rapid adaptation to specific vehicle platforms and emission strategies.
Custom probe design and harness length
Software calibration for specific DEF characteristics
Model-based development for faster prototyping
Seamless ECU and system integration support
These capabilities ensure each customized sensor aligns perfectly with client system requirements and performance goals.
With over a decade of experience in smart automotive sensor development, Zhejiang Kreation Electronic Technology Co., Ltd. stands out as a leading DEF Sensor manufacturer. Our strong R&D foundation, advanced testing facilities, and commitment to international emission compliance make us a preferred partner for global OEMs.
We combine innovation, reliability, and precision to deliver lasting value in emission control systems. As a high-tech supplier of smart automotive sensors, we continue to support clients worldwide with advanced, customizable, and regulation-compliant solutions.
A DEF Sensor monitors the level and quality of Diesel Exhaust Fluid to ensure proper SCR system function and compliance with emission regulations. It plays a vital role in maintaining clean and efficient engine performance.
Our sensors use conductivity or ultrasonic detection to determine urea concentration in the DEF solution, ensuring accurate dosing for NOx reduction.
Common causes include fluid contamination, freezing conditions, or electrical faults. Regular maintenance and proper DEF handling help prevent these issues.
Yes. We offer OEM customization for design, software, and harness configurations to meet specific vehicle and system requirements.
Our DEF Sensors comply with Euro 6, China VI, and US EPA Tier 3 emission regulations, ensuring global compatibility and reliability.
Contact Zhejiang Kreation Electronic Technology Co., Ltd. today to discuss your DEF Sensor requirements or request a customized solution from our experienced OEM team.
