Products

/

Metal-based pressure sensitive chip

/

QTB251 metal base pressure sensitive chip

Product Center

PROCUTS CENTER

Product categories 



Contact us

CONTACT US



Contact number:: +86-0731-81809600; +86-0731-85128155



E-mail：: qitai@chntek.com



Company address:: No. 22, Dingsheng Road, Liuyang Economic Development Zone (High-tech Zone)
Address of Marketing Center:: Room 1108, Floor 11, Building 2, Modern Service Industry Park, No. 118 Xiongtian Road, Furong District, Changsha City

Number of views:

1000

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.

Retail price

0.0

元

Market price

0.0

元

Number of views:

1000

Product serial number

Quantity

-

+

Stock:

Category

Category：Metal-based pressure sensitive chip



1

Contact us

Product description

Parameters

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.