When you need reliable level measurement without direct contact with your media, our ultrasonic liquid level transmitter delivers enterprise-grade performance. Xi'an Qintai, established in 2001 as a national high-tech enterprise, brings over two decades of sensor manufacturing expertise to this advanced solution. Our transmitter offers measurement accuracy within ±0.5% with a response time under 2 seconds, making it ideal for demanding industrial applications. With an annual production capacity exceeding two million sensors and certifications including ISO9001, IATF16949, CE, UL, and REACH, we've earned our position as China's No. 1 OEM supplier to Weichai Power, Yuchai Power, and Quanchai Power. Our 86-strong R&D team ensures continuous innovation, while our proven track record with major power manufacturers guarantees you're investing in tested reliability.

You'll appreciate how our innovation disposes of support hassles. There are no moving parts to wear out or supplant. The ultrasonic waves travel through discuss, measuring fluid levels without touching your media.
This implies you maintain a strategic distance from defilement dangers completely. Your destructive chemicals, gooey fluids, or touchy pharmaceuticals stay immaculate. The sensor remains clean and operational for years.
Industrial & Chemical Processing
Your capacity tanks and reactors require steady checking. Our transmitter anticipates perilous floods whereas optimizing your generation productivity. It handles forceful chemicals without degradation.
Water & Wastewater Treatment
You can screen numerous tanks, supplies, and channels at the same time. The framework makes a difference you alter treatment parameters in real-time, avoiding natural infringement some time recently they happen.
Energy & Petroleum
Your fuel tanks and gas capacity offices require exact stock information. Our arrangement gives the exactness you require for vitality dispatching and administrative compliance.
Food & Refreshment Manufacturing
Hygiene is your need. The non-contact estimation guarantees your fixings meet strict security guidelines whereas keeping up exact blending ratios.
Pharmaceutical Production
You require documentation and consistency. Our transmitter gives traceable information for quality control and administrative compliance all through your generation process.
Agricultural Water system Systems
Your water system lakes and water saves advantage from robotized checking. Accomplish water preservation whereas guaranteeing your crops get ideal hydration.
| Parameter | Specification |
|---|---|
| Measurement Range | 0~0.5…500mH2O |
| Overload Pressure | 1.5 times of full range |
| Failure Pressure | 3 times of full range |
| Accuracy | ±0.1%F.S, ±0.25%F.S, ±0.5%F.S |
| Stability | Typical: 0.1%F.S, Maximum: 0.2%F.S |
| Operation Temperature | -40℃~100℃ |
| Offset Temperature | -10℃~70℃ |
| Medium Compatibility | All corrosive medium compatible with 1Cr18Ni9Ti and 316L |
| Signal Output | 4~20mA, 0~5V, 0~10V |
| Power Supply | 9~36Vdc (two-wire), 10~36Vdc/ac (three-wire) |
| Load Resistance | (U-10)/0.02(Ω), >100kΩ |
| Insulation | >100MΩ@50V |
| IP Rating | IP68 |
| Response Time | 10ms |
| Pressure Form | Gauge pressure and absolute pressure |
Mount your transmitter at slightest 50cm over the most elevated anticipated fluid level. This guarantees precise readings all through your full estimation range.
Position the sensor opposite to the fluid surface. Calculated establishment causes flag deviation and decreases accuracy.
Keep your sensor absent from pipelines, fomenters, and tank dividers. These deterrents make untrue echoes that compromise estimation quality.
Avoid establishment in regions with over the top froth or steam. These conditions assimilate ultrasonic signals and deliver unsteady readings.
Protect your transmitter from coordinate daylight and solid vibration sources. Shield it from electromagnetic obstructions created by engines or high-voltage equipment.
Ensure encompassing temperature remains inside the -40°C to +80°C working run. Temperature stipend highlights handle ordinary varieties automatically.
Wire your control and flag cables agreeing to given details. Utilize waterproof connectors appraised for your environment.
Perform starting calibration after establishment. Set your estimation extend, zero point, and yield parameters through the setup interface.
Our team of 86 R&D technicians works continuously on performance improvements. You benefit from innovations developed specifically for real-world industrial challenges.
We manufacture over two million sensors annually. This volume demonstrates the trust major power manufacturers place in our quality and reliability.
You receive support from initial design through mass production. Our flexible approach accommodates your specific requirements and timeline.
We adapt our ultrasonic liquid level transmitter to your particular application. Whether you need special materials, custom outputs, or modified mounting options, we deliver.

We proudly serve as the core supplier to China's top power manufacturers. Weichai Power, Yuchai Power, and Quanchai Power trust our sensors for their critical applications. This partnership validates our commitment to quality and reliability.

Our team regularly participates in international industry exhibitions across Asia, Europe, and North America. These events allow us to showcase innovations and understand your evolving measurement challenges. We maintain a strong presence in over 30 countries.

We operate modern warehousing facilities with climate-controlled environments. Your orders ship quickly from our well-stocked inventory. Our logistics partners ensure safe, timely delivery worldwide.

Each transmitter receives protective packaging designed for international transport. We use shock-resistant materials and moisture barriers. Your equipment arrives in perfect condition, ready for installation.

Q: What's the contrast between ultrasonic and radar level measurement?
A: Ultrasonic employments sound waves through discuss, making it cost-effective for most fluids. Radar employments electromagnetic waves, which work superior in extraordinary temperatures, vacuum, or with foam.
Q: Can this transmitter degree strong materials?
A: Yes, it works well with granular solids like cement, grain, and plastics in silos. The fabric surface ought to be generally level for best accuracy.
Q: How do I anticipate wrong readings from froth on the fluid surface?
A: Select a lower recurrence sensor (40kHz) for froth applications. On the other hand, consider introducing a stilling well to make a foam-free estimation zone.
Q: What support does the transmitter require?
A: Exceptionally negligible. Intermittently clean the transducer confront to expel clean or flotsam and jetsam. Confirm calibration every year or after prepare changes.
Q: Can I utilize this in unsafe areas?
A: Yes, we offer Ex-certified forms for unstable environments. Contact us with your particular zone classification requirements.
Q: What's the most extreme separate from transmitter to control room?
A: With 4-20mA yield, up to 500m utilizing appropriate cable. RS485 amplifies to 1200m. We can indicate HART convention for indeed longer distances.
Q: How does temperature influence estimation accuracy?
A: Our transmitters incorporate programmed temperature emolument. The inner calculation alters for sound speed changes caused by temperature variations.
Q: Can I screen numerous tanks with one system?
A: Yes, you can interface different transmitters to a single control framework through RS485 or your plant arrange.
Ready to improve your level measurement reliability with ultrasonic liquid level transmitter? Reach out today at info@qt-sensor.com to discuss your requirements.
Our customers’ satisfaction speaks for our quality — contact us to experience the same reliable service.