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QTB251 metal base pressure sensitive chip

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QTB251 metal base pressure sensitive chip

The QTB251 metal-based pressure-sensitive chip adopts MEMS technology, and the strain resistance is directly fabricated on a 17-4PH stainless steel substrate. Through the elastic deformation of the substrate, the chip outputs an mV voltage signal linearly related to the measured pressure to realize the measurement of the pressure. Accurate and fast measurement. This product is suitable for industries with high requirements for sensor performance, reliability and stability and limited installation locations. The chip outputs mV voltage signals, and customers can process the signals according to actual requirements.
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1
product description   

The QTB251 metal-based pressure-sensitive chip adopts MEMS technology, and the strain resistance is directly fabricated on a 17-4PH stainless steel substrate. Through the elastic deformation of the substrate, the chip outputs an mV voltage signal linearly related to the measured pressure to realize the measurement of the pressure. Accurate and fast measurement. This product is suitable for industries with high requirements for sensor performance, reliability and stability and limited installation locations. The chip outputs a mV voltage signal, and the customer can process the signal according to actual requirements

 

2
Features 

◆The sputtering film technology guarantees good long-term stability and high reliability

◆Wide working temperature zone, low temperature drift, high precision

◆Integrated structure, suitable for a variety of fluid media

◆Can detect pressure and temperature signals at the same time

◆17-4PH stainless steel material, corrosion resistance

◆Small size, the outer diameter of the strain surface is 5mm, the outer diameter of the step is 7.5mm, the height is 5mm, and the product weight is 1g

◆Unique ID function code

◆High cost performance, suitable for OEM manufacturers

 

3
Circuit principle and pin identification definition

Pin number

1

2

3

4

Function code

V-

S+

V +

S-

Function definition

power supply-

Output out +

Power+

Output-

 

4
Use and industry

It is suitable for pressure measurement applications such as electronic body electronic stability system (ESP), electronic hydraulic brake system (EHB), hydraulic components, and automation equipment that require high size miniaturization.

 

5
Product parameter

 

Measured medium

Gas and liquid compatible with stainless steel  

Type of pressure

Gauge pressure, absolute pressure

Range

6MPa~250MPa

Precision

± 0.2% FS 、 ± 0.5% FS 、 ± 1% FS

Not linear

± 0.1% FS 、 ± 0.15% FS

Hysteresis

±0.1%FS

Repeatability

0.1%FS

Sensitivity

1.5 ± 0.2mV / V 、 1.7 ± 0.2mV / V

Long-term stability

±0.1%FS/year, ±0.2%FS/year

Operating temperature

-40~+105℃ or customized

Zero temperature drift

±0.01 %FS/℃

Full-scale temperature drift

±0.03 %FS/℃

Insulation resistance

≥1000MΩ/500VAC

Breaking pressure

10-20 times (maximum not exceeding ≤400MPa)

Allow overload

1.5~2 times or customized

Response time

≤0.1 millisecond

Material

17-4PH

High reliability

Withstand 10 million shocks and sustain pressure

Dimensions

The outer diameter of the strain surface is 5mm, the outer diameter of the step is 7.5mm, and the height is 5mm

Recognizable

Unique ID code, can query the manufacturing, testing and calibration information of the chip

 

6
Dimensions and wiring instructions

The products are widely used in cranes, excavators, roadheaders, rotary excavators, trailer pumps, truck pumps, pump trucks, piling machinery, fire safety machinery, road machinery, loaders, shield machines, agricultural machinery, etc. with hydraulic systems Construction machinery.

 

7
Pressure level, sensitivity and pressure range

 

Pressure (MPa)

Sensitivity (mV/V)

Non-linearity (±%F·S)

Overload pressure (rated pressure)

Breaking pressure (rated pressure)

6

1.7±0.20

0.15

×2

×20

25

1.7±0.20

0.15

×2

×10

40

1.7±0.20

0.15

×2

×10

60

1.7±0.20

0.15

×2

≤400MPa

100

1.5±0.20

0.10

×2

≤400MPa

150

1.5±0.20

0.10

×1.5

≤400MPa

180

1.5±0.20

0.10

×1.5

≤400MPa

200

1.5±0.20

0.10

×1.5

≤400MPa

250

1.5±0.20

0.10

×1.5

≤400MPa

 

8
product model

 

model

Range

Accuracy class

Temperature range

QTB251

066 6MPa

D 0.2% FS

11 0~85℃

 

256 25MPa

E 0.5% FS

22 -10℃~105℃

406 40MPa

F 1% FS

33 -25℃~125℃

606 60MPa

 

43 -40℃~125℃

107 100MPa

55 -55℃~150℃

157 150MPa

 

187 180MPa

207 200MPa

257 250MPa

Selection example: QTB251 066 E 11=QTB251 Range: 6MPa Accuracy class 0.5%FS Temperature range: 0~+85℃

If you have any questions during the selection process or need special customization, please contact Qitai Sensing sales engineer for more detailed information and selection suggestions. Qitai Sensing serves you wholeheartedly.

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Copyright © Hunan Qitai Sensing Technology Co., Ltd.    Record number:湘ICP备19022602号-1    Powered by:300.cn Changsha

Copyright © Hunan Qitai Sensing Technology Co., Ltd.

Record number:湘ICP备19022602号-1  Powered by:300.cn Changsha

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