New Product Change Notice (PCN) effective Jan 1, 2025. MICROSENSOR appreciate your understanding.

Piezoresistive Pressure Sensors

With over 50 years of experience in pressure sensor development and research, Micro Sensor pressure sensors and transmitters are manufactured based on the piezoresistive principle. Types of piezoresistive pressure sensors are available and can be widely used in industries such as oil and gas, chemical plants, hydrology, water treatment as well as energy, etc. As a China professional piezoresistive pressure sensor supplier, MicroSensor can offer customers tailor-made products according to details or unique requirements for specific structures, designs, materials, etc.

Piezoresistive Pressure Sensors

Piezoresistive Pressure Transmitters and Transducers

Piezoresistive Pressure Sensors

Piezoresistive pressure sensors are widely used in various fields and are of various types. They are silicon oil-filled and can be divided into general pressure sensors and special materials pressure sensors, special structure pressure sensors, and differential pressure sensors. The General 19mm diameter MPM280 pressure sensor performs stably with long-term stability. There are different materials optional like Titanium, Hastelloy, Tantalum, etc. for anti-corrosive use. The MDM290 can be used to measure differential pressure with high accuracy.


Pressure and Temperature Sensor

Pressure and Temperature Sensor

[MPM281PT]

Φ19×11.5mm
Pressure range: 0bar~0.35bar…1000bar
Gauge, absolute, sealed gauge

more info...
Piezoresistive Pressure Sensor

Piezoresistive Pressure Sensor

[MPM280]

Φ19x15mm
0bar~0.2bar…700bar
General

more info...
High Stable Pressure Sensor

High Stable Pressure Sensor

[MPM281]

Φ19x11.5mm
Pressure range -1bar…0bar~0.07bar… 1000bar
Silicone/Fluorocarbon oil filling options

more info...
Piezoresistive Pressure Sensor

Piezoresistive Pressure Sensor

[MPM281VC]

Φ19x11.5mm
0bar~0.35bar…1000bar
Constant Voltage Supply

more info...
Flush Diaphragm Pressure Sensor

Flush Diaphragm Pressure Sensor

[MPM280P]

M20x1.5, R1/2, G1/2
0bar~1bar...35bar
Flush Diaphragm

more info...

Piezoresistive Pressure Transmitters and Transducers

MicroSensor offers piezoresistive pressure transmitters and transducers with high accuracy, stability, competitive prices and good performance. Types of general pressure transmitters and transducers are suitable for fluid pressure measurement in pipelines, oil tanks, water tanks as well as hydraulic systems. Both analog output signals 4mA-20mA, 1-5VDC and digital type output signals HART, RS485, Modbus as well as IIC, CANopen, etc. The transmitters and transducers are certified with ATEX explosion-proof, UL, ship use and CE, etc.


ATEX Pressure Transmitter

ATEX Pressure Transmitter

[MPM489]

-1bar...0mbar~100bar…1000bar
General / Flush Diaphragm
CE, RoHS, ATEX approved
DNV and ABS certifications for installation on the ship

more info...
Pressure Transmitter Suitable For General Industry

Pressure Transmitter Suitable For General Industry

[M20]

Range: 0~250mbar to 0~250bar

Accuracy:±0.25%FS, ±0.5%FS
Output: 4mA~20mA DC, 0/1V~5/10V DC, 0.5V~4.5V DC

more info...
Digital RS485 HART Pressure Transmitter

Digital RS485 HART Pressure Transmitter

[MPM4730]

Range:-1bar...0~0.1bar…1000bar
Accuracy: ±0.15%FS (Typ.)
RS485/HART Protocol
DNV approved for ship use

more info...


What is the Working Principle of a Piezoresistive Pressure Sensor?



The piezoresistive pressure sensor is based on the piezoresistive effect, which refers to the phenomenon that the resistance of a semiconductor changes when it is subjected to an external force. A piezoresistive silicon pressure sensor is usually made of four equal-value resistor strain elements on a silicon chip, forming a Wheatstone bridge. The silicon chip is the "heart" of the piezo pressure sensor. When subjected to pressure, the resistance of the circuit on the chip changes accordingly. The resistance of one pair of arms becomes more significant, while the resistance of the other becomes smaller. When the bridge is out of balance, it will output a voltage proportional to the pressure. The pressure sensor converts pressure into an electrical signal output when working.

Simply put, the piezoresistive sensor working principle is based on the change in the resistance value of the sensing element caused by pressure. The measuring circuit converts the varying voltage signal into an output signal proportional to the pressure.

Click here for more details and information on How Piezoresistive Pressure Sensors Work.



Piezoresistive Pressure Sensors VS. Piezoelectric Pressure Sensors


Piezoresistive and piezoelectric pressure sensors are two commonly used types of sensors for measuring pressure. The differences are as follows:


PiezoresistivePiezoelectric
Working Principles

Piezoresistive Effect

 (strain after stress)

Piezoelectric Effect
Physical QuantityResistanceElectric Charge
Elements MaterialsPiezoresistive materials such as silicon, metal, etc.Piezoelectric crystal or ceramic
Measurement TypeStaticDynamic
ApplicationIndustrial process, medical equipmentAerospace, Acoustic measurement
AdvantageHigh precision, reliability, durabilityHigh sensitivity, fast response time



The piezoresistive pressure transducers play an important role in the detection part of the industrial automation production process, it is the core part of the smart industry. As a pressure sensor manufacturer, MicroSensor designs and develops types of industrial pressure sensors, differential pressure transmitters, and submersible level sensors and transmitters so far and we will continue to provide more advanced pressure transmitters for the process industry to buy. 



 

Resources

  • Micro Sensor Receives CNAS Accreditation

    Micro Sensor Receives CNAS Accreditation

    Micro Sensor Co., Ltd. is proud to announce that its Testing Center has been officially accredited by the China National Accreditation Service for Conformity Assessment (CNAS) for pressure transmitter and pressure sensor testing (Regis...

    Details >

  • Notification of New Product Change Notice Release

    Notification of New Product Change Notice Release

    Dear Customer,We are writing to inform you that Micro Sensor has issued a new Product Change Notice (PCN) as part of our ongoing efforts to enhance and standardize our product management system. This initiative focuses on optimizing th...

    Details >

  • Micro Sensor's MDM7000 Series Pressure Transmitter Received BV and LR Certificates

    Micro Sensor's MDM7000 Series Pressure Transmitter Received BV and LR Certificates

    Micro Sensor Co., Ltd. (hereafter "Micro Sensor") is proud to announce that its MDM7000 Series Smart Pressure Transmitter (hereafter "MDM7000 Series") has been successfully certified by both Bureau Veritas (BV) and Lloyd’s Register (...

    Details >

  • Meet MicroSensor at Sensor+Test 2025

    Meet MicroSensor at Sensor+Test 2025

    We are excited to invite you to join MicroSensor at Sensor+Test 2025! Taking place in Nuremberg, Germany, this event serves as a platform for industry professionals to showcase innovations, network, and learn about the latest advanceme...

    Details >

  • Meet MicroSensor at TAUSENDWASSER 2025

    Meet MicroSensor at TAUSENDWASSER 2025

    TAUSENDWASSER 2025 emphasizes the importance of conserving and efficiently using water resources. New technologies and products are promoting the water industry. Discover the measurement and control solutions with MicroSensor! Take the...

    Details >

  • Meet MicroSensor at SMAGUA 2025 with a FREE PASS

    Meet MicroSensor at SMAGUA 2025 with a FREE PASS

    At Smagua 2025, you'll have the opportunity to explore MicroSensor measuring products designed to meet the diverse needs of the water and wastewater industry. Our expert team will be on hand to discuss how our solutions can help you en...

    Details >

Contact Us

If you still can't find what you're looking for, please contact us with more details so that we can provide you with a suitable solution.

MICRO SENSOR CO., LTD


Headquarters
No. 18, Yingda Road,
Baoji, 721006,Shaanxi,P.R.China

German Subsidiary
Micro Sensor GmbH
Girardetstr. 6, D-45131 Essen, Germany

Tel: +86-29-88346384
Whatsapp: 15114817352
Email: sales@microsensor.cn