When your HVAC system operates efficiently, energy costs drop and indoor air quality improves. At Xi'an Qintai Automotive Emission Technology Co. Ltd., we specialize in high-precision hvac differential pressure transmitter solutions that transform how you monitor and control your building environment. Since 2001, our national high-tech enterprise has delivered over two million sensors annually with proven reliability. Our product utilizes advanced piezoresistive MEMS technology, offering accuracy levels of ±0.5% to ±1.0% full scale across ultra-low ranges from 0-25 Pa to 0-500 Pa. With IP65-rated housings, thermal compensation from -20°C to 70°C, and multiple output options including 4-20mA, 0-10V, and Modbus RTU, you get enterprise-grade performance backed by ISO9001, IATF16949, CE, UL, and RoHS certifications.

Each cutting edge building mechanization framework depends on exact information. Without exact estimations, you cannot optimize vitality utilization or keep up secure environments.
Pressure differential estimation gives you real-time knowledge into what is happening interior your ductwork, over your channels, and inside your controlled spaces. This information gets to be the establishment for shrewd decision-making.
When you introduce a quality weight transmitter, you move from responsive support to prescient administration. You halt speculating when channels require substitution and begin knowing precisely when activity is required.
Our 86-member building group ceaselessly refines sensor innovation. We hold 58 development licenses and contribute intensely in advancement. This implies you get items with the most recent progressions in precision and reliability.
With yearly capacity surpassing two million sensors, we keep up thorough quality control at each generation arrange. Our IATF16949 certification guarantees automotive-grade fabricating discipline.
We are the number one OEM provider to China's driving control producers counting Weichai, Yuchai, and Quanchai. This showcase authority reflects the believe major ventures put in our quality.
Every office has interesting prerequisites. We offer adaptable customization in weight ranges, yield signals, mounting arrangements, and lodging materials.
Whether you require uncommon cable lengths, custom calibration focuses, or particular electrical associations, our group works with you from beginning plan through mass generation. Our OEM/ODM administrations adjust to your correct determinations.
| Parameter | Specification |
|---|---|
| Pressure Range | -1/0 bar, 0/1...600 bar |
| Medium Compatibility | All refrigerants |
| Overload Protection | 150% FS |
| Burst Pressure | 300% FS |
| Output Options | 4-20mA, 1-5V, 0.5~4.5V, 0-5V, 0-10V |
| Power Supply | 5VDC, 5~36VDC |
| Response Time | <5ms |
| Combined Error | 1% FSO; 0.5% FS |
| Repeatability | ≤±0.2% FSO |
| Long-term Stability | ≤±0.2% FS/year |
| Pressure Connection | 3/8"-24UNF-2A, 7/16"-20UN G1/4, 1/8"NPT |
| Electrical Connector | Packard, Hirschmann, DIN4365, Cable |
| Operating Temperature | -40℃ to 135℃ |
| Temperature Compensation | -30℃ to 80℃ |
Clogged filters force your fans to work harder. This wastes energy and shortens equipment life.
A product measures resistance across the filter continuously. When pressure drop exceeds your threshold, the system alerts you automatically. You replace filters based on actual condition, not arbitrary schedules.
This approach cuts maintenance costs and keeps your system running at peak efficiency.
VAV systems deliver conditioned air only where needed. They require precise airflow measurement to function correctly.
Our transmitters work with your VAV controllers to monitor air volume in real time. The system adjusts dampers automatically to match demand from each zone. This intelligent control dramatically reduces energy waste while maintaining comfort.
In sensitive environments, pressure control is not optional—it is mandatory. You must maintain exact positive or negative pressure to protect processes or contain hazards.
The hvac differential pressure transmitter continuously compares room pressure against reference areas. Your building automation system uses this data to adjust fan speeds instantly. Any deviation from setpoint triggers immediate corrective action.
This level of control protects your operations and meets strict regulatory requirements.
How do you know your fans are actually running? Pressure measurement provides confirmation.
Advanced systems use our transmitters with variable frequency drives to maintain constant static pressure in main ducts. The fan speeds up or slows down automatically as conditions change. You eliminate the waste of running fans at full capacity when partial load would suffice.

We serve global distributors, system integrators, and OEM customers across five continents. Our partnerships with industry leaders validate our technical capabilities and service commitment.
Collaboration with major HVAC manufacturers and building automation providers ensures our products integrate seamlessly into existing systems.

Qintai participates in major international trade shows including ISH, AHR Expo, and regional HVAC exhibitions. These events connect us directly with system designers, contractors, and facility managers worldwide.
Our growing presence in North America, Europe, and Southeast Asia reflects increasing global demand for reliable Chinese-manufactured sensors.

We maintain strategic inventory in multiple locations to ensure rapid delivery. Standard products typically ship within 48 hours of order confirmation.
Our logistics partners provide tracking and expedited shipping options. We understand that downtime costs money, so we prioritize fast, reliable delivery.

Each transmitter receives individual protective packaging with anti-static materials. We use reinforced cartons for bulk shipments with clear labeling for easy identification.
Documentation includes calibration certificates, wiring diagrams, and installation instructions in English. International shipments comply with all customs and safety regulations.

Q: What is the ordinary life expectancy of your product?
A: Beneath ordinary working conditions, our transmitters give solid benefit for 10+ a long time. The sensor component has no moving parts, which enormously amplifies operational life. Yearly calibration checks offer assistance keep up precision over time.
Q: Can I utilize these transmitters in dusty or sticky environments?
A: Completely. Our IP65-rated lodging ensures inner components from clean and water entrance. We particularly plan these units for mechanical rooms and housetop establishments where natural conditions can be challenging.
Q: How troublesome is field calibration?
A: Exceptionally clear. Most models incorporate open zero and span alteration potentiometers or pushbutton calibration through the discretionary LCD show. The prepare takes less than five minutes with fundamental devices. We give nitty gritty calibration strategies with each unit.
Q: What yield flag works best with my building robotization system?
A: That depends on your BAS design. The 4-20mA current circle offers great clamor resistance for long cable runs. The 0-10V flag works well for shorter separations. Modbus RTU gives advanced communication with numerous information focuses. Contact us to talk about your particular framework requirements.
Q: Do you offer specialized bolster after purchase?
A: Yes, comprehensive bolster is included. Our specialized group helps with establishment questions, investigating, and framework integration. We ordinarily react to request inside 24 hours.
Q: Can you customize weight ranges for uncommon applications?
A: Certainly. We frequently create custom ranges for one of a kind applications. Our building group will work with you to decide the ideal run and arrangement for your particular needs. Least arrange amounts apply for completely custom details.
Ready to improve your HVAC system performance with hvac differential pressure transmitter? Reach us at info@qt-sensor.com for quotations, technical specifications, or application support.
Our customers’ satisfaction speaks for our quality — contact us to experience the same reliable service.