- HUNAN CHNTEK SENSOR TECHNOLOGY CO.,LTD.
-
Changsha, Hunan, China
- Main products: metal sputtering thin film pressure sensitive element, pressure sensor, Fire hydrant pressure monitoring terminal
Home > Products > pressure sensor > CHNTEK QTB251-B Sputtering Thin Film Pressure Sensitive Element
CHNTEK QTB251-B Sputtering Thin Film Pressure Sensitive Element
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Product Details
| Brand Name | CHNTEK | Place of Origin | China | |
| Model Number | QTB251-B |
Product Description
The strain resistances are sputtered directly on the 17-4ph stainless steel substrate by using MEMS (micro-mechanical and micro-electronic) technology. The stress on the substrate produces elastic deformation and outputs a millivolt-level signal which is linearly related to the measured pressure. With the characteristics of good long-term stability, high reliability and small size, QTB251 has a wide range of applications, especially for pressure measurement in automotive electronic stability system (ESP) and electronic hydraulic braking system (EHB).
l Circuit principle and pin definition
Pin No. | 1 | 2 | 3 | 4 | 5 |
Function code | V- | S+ | V+ | S- | Vt |
Function definition | Negative power supply | Positive output | Positive power supply | Negative output | Temperature Sensitive Signal |
Note: Temperature sensitive resistor is optional
l Product parameters
measured media | Gas and liquid compatible with stainless steel | ||
measuring range | 25MPa | ||
accuracy | ±0.2%FS、±0.5%F | Insulation resistance | ≥1000MΩ/500V DC |
nonlinearity | 0.1%FS、0.2%FS | breakdown pressure | 500%FS |
hysteresis | 0.1%FS | Permission overload | 200%FS |
repeatability | ≦0.1%FS | mechanical vibration | 20g（20～5000HZ) |
sensitivity | 1.6～2.4mV/V | response time | ≤0.1ms |
long-term stability | ≤±0.1%FS/year | material | 17-4PH |
operating temperature | -40～+125℃ | reliability | Resistant to 1 million shocks |
Zero temperature drift | ±0.03%FS/℃ | Overall dimensions | Outside diameter of strain surface : 5mm, Outside diameter of the step : 7.5mm, height : 5mm |
full scale temperature drift | ±0.03%FS/℃ | identifiability | Unique ID code, which can be used to query the manufacturing, testing and calibration information of the chip. |
l Product Selection
Accuracy Level
code | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Accuracy level （FS%） | 2.0 | 1.0 | 0.5 | 0.2 | 0.1 | 0.05 | 0.02 | 0.01 |
Temprature Level
Code (The first digit) | temperature upper limit(℃) | Code (The second digit) | temperature lower limit(℃) |
1 | 0 | 1 | +85 |
2 | -10 | 2 | +105 |
3 | -25 | 3 | +125 |
4 | -40 | 4 | +150 |
Measuring range representation: three digits, the third digit represents the number of zeros after the first two digits, and the unit is Pa
Contact Us
- HUNAN CHNTEK SENSOR TECHNOLOGY CO.,LTD.
- Contact nameFAN Chat Now
- Phone86-731-85128155
- AddressLiuyan, Changsha, Hunan
Product Categories
| pressure sensor | Pressure Transmitters |
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