Metal-based pressure sensitive chip

Pressure sensor/transmitter

Pressure monitoring system

QTB251 metal base pressure sensitive chip
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  • QTB251 metal base pressure sensitive chip

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.

Keywords:

Chntek Sensor Technology

Category:

Metal-based pressure sensitive chip

Contact phone number:

86-731-81809600 / 86-731-85128155

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Product Details

  • 产品描述
    • Commodity name: QTB251 metal base pressure sensitive chip
    • Commodity ID: 1448249826821689344

    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.

    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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