At Xi'an Qintai Automotive Emission Technology Co. Ltd., our Urea Dosing Pressure Sensor delivers enterprise-grade precision for diesel engine aftertreatment systems. As China's No. 1 OEM supplier with over 20 years of expertise since 2001, we manufacture high-performance sensors that monitor hydraulic pressure within SCR systems with exceptional accuracy. Our sensors feature a pressure range of 0 to 12 bar with ±1.5% Full Scale accuracy, operating reliably across -40°C to +125°C temperature extremes. With an annual production capacity exceeding two million sensors and 58 invention patents, we supply core partners including Weichai Power, Yuchai Power, and Quanchai Power, ensuring your diesel engines meet stringent Euro VI and EPA Tier 4 Final emission standards.

This specialized detecting gadget coordinating inside your Specific Catalytic Decrease framework to screen Diesel Debilitate Liquid weight in real-time. The sensor ceaselessly measures AdBlue arrangement weight as it streams through the dosing module.
By giving moment input to your Motor Control Unit, it empowers exact urea infusion into the deplete stream. This real-time checking guarantees ideal NOx diminishment execution whereas anticipating common framework failures.
The sensor acts as your system's weight gatekeeper, identifying inconsistencies some time recently they heighten into exorbitant breakdowns or outflow compliance issues.
Our weight observing gadgets utilize cutting-edge piezoresistive MEMS innovation with specialized materials outlined for urea compatibility. The 316L stainless steel stomach stands up to the destructive nature of 32.5% fluid urea solutions.
Each unit accomplishes IP69K entrance security, shielding inside components against high-pressure washing and unforgiving natural conditions. The detecting component illustrates predominant thaw-cycle strength, withstanding development strengths when solidified urea moves to fluid state.
High electromagnetic compatibility resistance guarantees exact flag transmission indeed in electrically loud motor compartments. The ceramic thick-film strain gages keep up calibration steadiness all through the sensor's operational lifetime.
| Parameter | Specification |
|---|---|
| Model | QS-P226 |
| Pressure Range | Refer to OE |
| Supply Voltage | 5V |
| Output Type | Analog Output |
| Measuring Medium | Urea |
| Warranty | 12 months |
| Quality | 100% Tested |
| Operating Temperature Range | 60-80°F |
| Measurement Range | -14 psi to +130.5 psi |
| Signal | 0.5-4.5 VDC ratio metric |
| Accuracy | +0.5% |
We actualize a thorough zero-defect strategy adjusted with IATF 16949 guidelines all through our fabricating prepare. Each sensor experiences helium spill testing to confirm airtight seal judgment some time recently taking off our facility.
Urea compatibility submersion tests taking after ISO 22241 affirm chemical resistance over 3,000+ hours of presentation. Warm stun testing reenacts 500+ cycles between extraordinary temperatures to approve execution reliability.
Calibration confirmation happens over the total weight and temperature bend, guaranteeing exactness in all working conditions. Overpressure testing at 3x to 5x working weight ensures auxiliary judgment against unforeseen framework spikes.
Our quality confirmation group, upheld by 86 R&D professionals, keeps up certifications counting ISO9001, IATF16949, CMC, Ex, UL, CE, REACH, and RoHS.
When your weight sensor glitches, your ECU cannot direct AdBlue dosing accurately. This leads to prompt disturbance of SCR framework operation and potential outflow compliance violations.
Your vehicle may enter limp mode with altogether diminished motor control, affecting efficiency and operational proficiency. NOx outflows increment past legitimate limits whereas demonstrative inconvenience codes gather in your ECU memory.
The framework may consequently impair AdBlue infusion as a defensive degree, coming about in proceeded tall emanations. Early discovery and substitution anticipate these cascading disappointments from influencing your armada operations.

We proudly serve as the core supplier to China's leading diesel engine manufacturers. Our partnership with Weichai Power, Yuchai Power, and Quanchai Power reflects our commitment to quality and reliability.
These industry leaders trust our sensors to power millions of diesel engines across commercial vehicles, construction equipment, and agricultural machinery. Our No. 1 market share position in China demonstrates the confidence major OEMs place in our technology.

Our team regularly participates in international automotive exhibitions to showcase innovation and connect with global partners. We maintain active presence in key markets across Asia, Europe, and North America.
Through these exhibitions, we demonstrate our latest sensor technologies and expand our network of distributors and OEM partners. Our global footprint continues growing as emission regulations tighten worldwide.

Our modern warehouse facilities ensure rapid order fulfillment with an annual production capacity exceeding two million sensors. Strategic inventory management minimizes lead times for both standard and customized orders.
With 420 dedicated employees, we maintain efficient logistics operations that support just-in-time delivery requirements. Our distribution network reaches customers across multiple continents with reliable shipping partnerships.

Each Urea Dosing Pressure Sensor receives protective packaging designed to prevent damage during international transport. Anti-static materials safeguard sensitive electronic components from electrostatic discharge.
We use shock-absorbing materials and moisture barriers to maintain product integrity throughout the shipping process. Clear labeling and documentation ensure smooth customs clearance for international orders.
Our packaging meets international shipping standards while minimizing environmental impact through recyclable materials.

Q: How regularly ought to I supplant the product?
A: Supplant sensors agreeing to your motor manufacturer's upkeep plan, ordinarily each 5,000 to 10,000 working hours. Be that as it may, quick substitution is essential if you involvement limp mode, dosing mistakes, or put away blame codes.
Q: Can your sensors withstand freeze-thaw cycles?
A: Yes, our sensors highlight progressed thaw-cycle versatility. The specialized plan obliges development strengths from solidified urea without flag float or mechanical disappointment, guaranteeing year-round unwavering quality in extraordinary climates.
Q: Do you offer customization for particular applications?
A: Completely. We give comprehensive OEM and ODM administrations to meet your one of a kind necessities. Our autonomous R&D group works with you from starting plan through mass generation, adjusting determinations to your correct needs.
Q: What certifications do your sensors carry?
A: Our items are certified to ISO9001, IATF16949, CMC, Ex, UL, CE, REACH, and RoHS benchmarks. This guarantees compliance with worldwide quality and natural directions for worldwide showcase access.
Q: What is your normal lead time for orders?
A: Standard orders regularly dispatch inside 7-15 commerce days. Custom orders require extra time for designing and tooling. Contact us for particular timeline data based on your arrange volume and specifications.
Q: How do I troubleshoot sensor issues?
A: Common investigating incorporates checking electrical associations, confirming supply voltage, and checking for symptomatic codes. If readings are whimsical or out of run, sensor substitution is regularly essential. Our specialized group can give nitty gritty symptomatic back.
Ready to enhance your SCR system reliability with Urea Dosing Pressure Sensor? Contact us today at info@qt-sensor.com to receive technical specifications, pricing information, and sample availability.
Our customers’ satisfaction speaks for our quality — contact us to experience the same reliable service.