Our differential pressure transmitter represents over two decades of engineering excellence since 2001. As China's No. 1 OEM supplier with an annual production capacity exceeding two million sensors, we deliver industrial-grade pressure measurement solutions you can trust.
Our transmitters feature advanced capacitive sensing technology with accuracy levels up to ±0.5%, making them ideal for critical applications across manufacturing, petrochemical, and automotive industries. With certifications including ISO9001, IATF16949, CE, and RoHS, our products meet the highest international standards. Backed by 58 invention patents and a dedicated team of 86 R&D technicians, we ensure every product delivers consistent performance in demanding environments.
Whether you're monitoring filter conditions, measuring flow rates, or controlling fluid systems, our transmitters provide the precision and durability your operations demand.

Our differential pressure transmitter utilizes advanced differential capacitance technology for superior accuracy. The sensing element features a precision-manufactured metal diaphragm positioned between two stationary plates, forming complementary capacitors. This design ensures predictable displacement corresponding to applied force.
When weight changes over estimation focuses, the stomach flexes toward the lower weight side. This development changes capacitance values inversely—increasing on the low-pressure side whereas diminishing on the high-pressure side. The result? Exceedingly precise electrical signals you can depend on.
The framework utilizes an electrically protection fill liquid that serves double purposes. To begin with, it exchanges movement from confining stomachs to the detecting component. Moment, it acts as an viable dielectric medium for the capacitors.
This inventive approach changes over weight contrasts into relative electrical outputs—typically voltage or current signals. Your control frameworks can at that point utilize these signals for real-time observing, prepare control, or information procurement.
| Parameter | Specification |
|---|---|
| Model | QS-P202 |
| Pressure Range | -1~0bar; 0~1...2000bar |
| Overload | 150%FS |
| Burst Pressure | 300%FS |
| Output | 4-20mA, 1-5V, 0.5~4.5V, 0-5V, 0-10V |
| Power Supply | 5~36VDC |
| Response Time | <5ms |
| Combined Error | 0.5% FSO, 0.25% FSO, 0.1% FSO |
| Repeatability | ≤ ±0.2%FSO |
| Long-term Stability | ≤ ±0.2%FS/year |
| Wetted Parts | SS304, SS316L, Hastelloy |
| Pressure Connection | M20×1.5, G1/2, G1/4, NPT1/2 (customizable) |
| Operating Temperature | -20°C ~ 125°C |
| Temperature Compensation | 0°C ~ 80°C |
| Electrical Connection | M12x1.5 connector, Hirschman DIN43650A, Cable |
Our transmitters excel in monitoring filter clogs across industrial systems. You'll receive early warnings before maintenance issues escalate into costly downtime. They're equally effective for precise flow rate measurements in pipelines and processing equipment.
Level measurement becomes straightforward with our pressure differential technology. From storage tanks to reactors, you get accurate liquid level readings regardless of fluid characteristics. The automotive sector particularly benefits from our SCR system integration expertise.
We understand your operations don't stop for weather or temperature extremes. That's why our transmitters operate reliably from -40°C to +125°C. Corrosive fluids? Our 316L stainless steel wetted parts resist chemical attack.
High-vibration environments pose no challenge. Our robust construction maintains accuracy even under mechanical stress. With IP67-rated options, moisture and dust ingress won't compromise your measurements.
Our advancement doesn't happen by mischance. We contribute persistently in investigate and improvement to improve item execution and unwavering quality. Our 86-person R&D group works day by day on moving forward detecting precision, extending temperature ranges, and creating more intelligent communication protocols.
This commitment to development has come about in 58 innovation licenses. Each obvious speaks to a real-world arrangement to estimation challenges our clients confront. You advantage from innovation that's been demonstrated in the world's most requesting applications.
Every application has special necessities. We bolster comprehensive customization from weight ranges to electrical associations. Require uncommon materials for destructive media? We've got you secured. Require particular yield conventions? Our group will arrange transmitters to your correct specifications.
Our OEM administrations have made us the center provider for China's driving control companies—Weichai Control, Yuchai Control, and Quanchai Control. This track record talks to our capacity to meet exacting quality measures consistently.
Our ODM capabilities amplify past straightforward adjustments. You can work with our engineers from starting concept through prototyping to full-scale fabricating. We'll offer assistance you create custom weight estimation arrangements that deliver your items a competitive edge.
With yearly generation capacity surpassing two million sensors, we scale proficiently to meet your volume necessities. Whether you require 100 units or 100,000, we keep up the same thorough quality benchmarks.

We're proud to serve as the No. 1 market share holder in China's automotive sensor industry. Our partnerships with leading power system manufacturers demonstrate the trust major corporations place in our technology.
Global brands choose Qintai because we deliver consistent quality at scale. Our national high-tech enterprise status reflects our commitment to advancing pressure measurement technology. These partnerships drive continuous improvement in our product lines.

We effectively take an interest in worldwide exchange appears and industry presentations around the world. These occasions permit us to exhibit our most recent developments and interface with clients over continents.
Our worldwide nearness expands past shows. We've set up dispersion systems that guarantee provoke specialized back wherever you work. From Asia to Europe to the Americas, Qintai sensors work dependably in your applications.

Key distribution center areas guarantee speedy conveyance to your office. We keep up considerable stock levels of standard models for quick shipment. Custom setups dispatch inside concurred lead times.
Our coordinations accomplices give dependable, trackable shipping administrations all inclusive. You'll get following data as before long as your arrange ships. We moreover offer assisted shipping choices when your extend timelines request speedier conveyance.

Each item gets defensive bundling planned for secure worldwide transport. Anti-static materials ensure touchy hardware. Strong external cartons with inner padding anticipate mechanical harm amid handling.
We incorporate total documentation with each shipment—calibration certificates, client manuals, and wiring charts. Your establishment groups will have everything required for effective commissioning. Extraordinary bundling necessities? Fair let us know your details.

Q: What's the normal lead time for standard models?
A: Standard setups dispatch inside 3-5 commerce days. Custom details ordinarily require 2-3 weeks depending on complexity.
Q: Do you give calibration certificates?
A: Yes, each unit incorporates a traceable calibration certificate. We can moreover give third-party certifications if your application requires them.
Q: Can your transmitters handle destructive fluids?
A: Completely. Our 316L stainless steel wetted parts stand up to most destructive media. For extraordinary applications, we offer extra fabric choices counting Hastelloy and titanium.
Q: What guarantee do you offer?
A: We give a standard 24-month guarantee covering fabricating absconds. Amplified guarantee alternatives are accessible for long-term projects.
Q: How do I select the right weight range?
A: Select a run where your normal working weight falls in the center 60% of the span. This guarantees ideal exactness and permits for handle variations.
Q: Are your transmitters reasonable for hazardous atmospheres?
A: Yes, we offer Ex-certified models for perilous area establishments. These meet ATEX and IECEx necessities.
Ready to improve your pressure measurement accuracy with differential pressure transmitter? Reach out today at info@qt-sensor.com for expert guidance and competitive pricing.
Our customers’ satisfaction speaks for our quality — contact us to experience the same reliable service.