Pressure sensors are an essential part of many industries.
The global pressure sensor market is expected to reach USD 26.3 billion by 2030.
The market growth is primarily driven by the growing demand for pressure sensors in various industries, including automotive, healthcare, aerospace, and consumer electronics. Moreover, advancements in wireless sensor technology, IoT solutions, and the increasing adoption of Industry 4.0 are expected to drive market growth in the coming years further.
Pressure sensors provide accurate and reliable measurements used in many applications such as process monitoring and control, leak detection, and ensuring the safe operation of equipment. Pressure sensors play an important role in maintaining operational efficiency and ensuring safety. In this context, it is important to understand what is pressure sensor and the basics of pressure sensors, to make informed decisions about their types, working principles, and applications in different fields.
Do you have a project that requires measuring pressure? If so, you’ve come to the right place! We’ll look at the different type of pressure sensors available and how they can be used for your applications.
Here’s a summary of what you’ll find on this page about pressure sensors:
- Introduction to Pressure Sensor
- Type of Pressure Sensors and Measurement Methods
- Applications of pressure sensors
- Pressure Sensor Maintenance
- Trends and Developments in Pressure Sensor
- Conclusion
Let’s take a deeper look!
Introduction to Pressure Sensor
What is a Pressure Sensor?
The pressure sensor is a measuring element used to measure the amount of pressure applied to it.
Pressure sensors are an integral part of many industries.
The global pressure sensors market is expected to reach USD 26.3 billion by 2030.
The market growth is mainly driven by the growing demand for pressure sensors in various industries including automotive, healthcare, aerospace and consumer electronics. In aanvulling, advancements in wireless sensor technology, Internet of Things (IoT) solutions, and growing popularity of Industry 4.0 are expected to further drive the market growth in the coming years.
Pressure sensors provide accurate and reliable measurements for many applications such as process monitoring, leak detection, and ensuring safe operation of equipment. Pressure sensors play an important role in maintaining operational efficiency and ensuring safety. In this context, it is important to understand what a pressure sensor is and how it works so that you can make informed decisions about the types of pressure sensors, how they work, and how they can be used in different areas.
Do you have a project where you need to measure pressure? If so, you’ve come to the right place! We will introduce you to the different types of pressure sensors and how they can be used in your application.
Below is a summary of the pressure sensors on this page:
How does the sensors measure pressure?
Pressure sensors can measure pressure in a number of ways, but the most common method is to use a diaphragm or film that deforms in response to the applied pressure. The deformation of the diaphragm or film creates a mechanical stress that is then converted into an electronic signal that can be read by an electronic circuit.
Piezoresistive pressure sensors use a diaphragm made of a material that is sensitive to changes in pressure, such as silicon. The diaphragm is covered with a piezoresistive material whose resistance changes depending on the amount of pressure applied. When the pressure changes, the resistance of the material also changes, and the pressure can be determined by measuring the change in resistance.
Piezoelectric pressure sensors use a diaphragm made of a piezoelectric material such as quartz. When pressure is applied to the diaphragm, the diaphragm generates an electrical charge proportional to the pressure. This charge can be measured and used to determine the pressure.
Capacitive pressure sensors use a diaphragm that is part of a capacitor. When pressure is applied to the diaphragm, the distance between the capacitor plates changes, and therefore the capacitance changes. The change in capacitance is measured and used to determine the pressure.
Strain gauge pressure sensors use a diaphragm that deforms when pressure is applied. The diaphragm is bonded to a strain gauge, which is a device that changes resistance in response to the deformation. The change in resistance is measured and used to determine the pressure.
Optical pressure sensors use the principle of light reflection or refraction to measure pressure. These sensors use a diaphragm that deforms under pressure, causing a change in the optical properties of the material. This change in optical properties is measured and converted into an electrical signal.
There are many other types and variations that are used for specific applications. Regardless of the type of pressure sensor, the output signal is usually amplified and processed by an electronic circuit to obtain an accurate voltage measurement for the application of the sensor.
Pressure Sensor Types and Measurement Methods
What are the type of pressure sensors?
Here are several types of pressure sensors, Including:
- Piezoresistive pressure sensors
- Piezoelectric pressure sensors
- Capacitive pressure sensors
- Strain gauge pressure sensors
- Optical pressure sensors
Pressure Sensor Working Principle
■ Piezoresistive Pressure Sensors: The principle of operation is to measure the change in resistance of a piezoresistive material when it is subjected to pressure. These sensors are widely used for pressure measurement in automotive and industrial applications, as well as in medical equipment.
■ Piezoelectric Pressure Sensors: These sensors work by utilizing the piezoelectric effect to measure pressure by detecting the voltage generated when a piezoelectric material is subjected to pressure. Commonly used in a variety of applications including automotive, aerospace and medical.
■ Capacitive Pressure Sensors: These work by detecting the change in capacitance between two plates or electrodes when pressure is applied, thus measuring the pressure. These sensors are commonly used in consumer electronics and aerospace applications.
■ Strain gauge pressure sensors: Measure pressure by detecting the deformation (strain) of a metal or semiconductor component under pressure. These sensors provide highly accurate pressure measurements and are therefore widely used in industrial and aerospace applications.
■ Optical Pressure Sensors: These work by utilizing the change in refractive index of a material under pressure to measure pressure. These sensors are commonly used in medical and scientific applications because they are able to provide accurate measurements without touching the fluid being measured.
Each type of pressure sensor has its advantages and disadvantages, and the choice of sensor depends on the specific requirements of the application, including factors such as sensitivity, accuracy, range and operating conditions.
Type of pressure measurements
There are a variety of attributes that can be used to categorise pressure sensors.
The different pressure types can be：
- Absolute pressure
- Gauge (or relative) pressure
- Differential pressure
- Sealed gauge pressure
- Vacuum pressure
Pressure measurement types and pressure application examples
| Type | Measurement Type | Unit | Application Examples |
|---|---|---|---|
| Absolute pressure | Measuring vacuum pressure | psia/kPa | ●Barometric●Meteorological applications |
| Gauge pressure (or Relative pressure) | Measuring atmospheric pressure | psig/kPa | ●Chamber pressure ●Car tyre ●Hydraulic applications |
| Differential pressure | Measuring the difference between two pressure port readings | psid/kPa | ●HVAC systems ●Air filters ●Ducts |
| Sealed gauge pressure | Measuring a fixed pressure | psis/kPa | ●Tire pressure ●Food and beverage ●For use in aggressive Media |
| Vacuum pressure | Measuring below atmospheric pressure | inHg/mbar | ●Vacuum pumps ●Semiconductor processing ●Flight instruments |
Absolute Pressure: This is the pressure measured relative to a complete vacuum and is usually measured in absolute pounds per square inch (psia) or absolute kilopascals per square inch (kPa). Absolute pressure is commonly used in scientific and engineering applications.
Gauge Pressure (or Relative Pressure): Used to measure pressure relative to the current atmospheric pressure, usually measured in pounds per square inch gauge pressure (psig) or kilopascals gauge pressure (kPa). Gauge pressures are commonly used in industrial and commercial applications.
Differential Pressure: Measured as the degree of difference between two pressures, rather than their magnitude relative to atmospheric or other reference pressures. Differential pressure is usually measured in pounds per square inch (psid) or kilopascals (kPa). Differential pressures are commonly used in HVAC (heating, ventilation, and air conditioning) systems to measure the pressure drop across air filters, ducts, and other components.
Sealed Gauge Pressure: A measured pressure relative to a fixed pressure rather than the current atmospheric pressure, such as the pressure inside a sealed container. Sealed gauge pressure is often used in applications where the reference pressure is known and fixed, such as tyre pressure sensors.
Vacuum Pressure: This is a pressure that is lower than atmospheric pressure and is usually measured in units such as inches of mercury (inHg) or millibars (mbar). Vacuum pressure is often used in applications such as vacuum pumps to measure the pressure inside a vacuum chamber.
What is the most common pressure sensor used?
In a survey conducted by Sensors Online, the most common type of pressure sensor used by engineers and designers was piezoresistive sensors.
According to Grand View Research, the piezoresistive technology segment will dominate the market in 2021 and account for more than 25 percent of global revenue. This pressure sensor technology is widely used in automotive, medical, and industrial applications.
It is followed by capacitive pressure sensors and then strain gauges.
Piezoresistive pressure sensors are commonly used MEMS pressure sensors, but they are not necessarily the most common type of pressure sensor used in all applications. The most appropriate type to use depends on the specific requirements of the application, such as pressure range, accuracy, response time, and environmental conditions. Therefore, it is important to select the most appropriate type of sensor for your specific application.
Pressure Sensor Applications
What is a Pressure Sensor Used For?
Pressure sensors are widely used in various industries.
The following are some of the common applications of pressure sensors:
- Medical applications
- Household applications
- Consumer electronics
- Automotive
- Industrial Automation
- Aerospace
Medical Applications: Used in medical devices such as blood pressure monitors, respiratory equipment and anesthesia machines to monitor and control pressure during medical procedures.
Home Applications: Used in smart home systems and gas appliances such as stoves, ovens and water heaters, pressure sensors are an important component of many home systems, helping to ensure that they operate safely and efficiently.
Consumer Electronics: Used in a variety of consumer electronic devices such as smartphones, tablets and wearable devices to detect changes in altitude, air pressure and other environmental factors.
Automotive: Used in engine control systems and transmissions to measure intake manifold pressure, fuel pressure and oil pressure. They are also used in tire pressure monitoring systems (TPMS) to help ensure the safe and efficient operation of vehicles.
Industrial Automation: Used in industrial control systems, such as hydraulic systems, compressed air systems and water supply systems, to monitor and control the pressure of fluids and gases in various processes. Industrial pressure sensors play a critical role in ensuring the safe and efficient operation of machinery and equipment and help to avoid costly downtime and equipment failures.
Aerospace: Used in the aerospace industry to monitor pressure in aircraft engines, fuel systems and other critical systems to ensure safe and efficient operation.
Maintenance of pressure sensors
How do I know if the pressure sensor is working properly?
Follow the steps below to determine if the pressure sensor is working properly:
1.Check Power: Make sure the sensor is properly connected to the power source and that the power source is supplying the correct voltage and current.
2.Check the sensor: Check the sensor for visible signs of damage or wear. Make sure the sensor is clean and free of dirt or rust that could affect its performance.
3.CHECK SIGNAL OUTPUT: Use a multimeter or oscilloscope to measure the output signal of the pressure sensor. The output signal should match the expected pressure reading.
4.Test the sensor against a known pressure source: If you have access to a known pressure source, such as a manometer or a compressed air source, you can verify the accuracy by comparing the sensor’s reading to a known pressure.
5.Calibrate the sensor: If the sensor reading is not accurate, it may need to be calibrated. To calibrate the sensor, follow the manufacturer’s instructions or ask a professional for help.
By following these steps, you can determine if the pressure sensor is working properly and providing accurate readings. If you are unsure of the operating condition of a pressure sensor or its importance to your application, you should consult a qualified professional or the manufacturer for further guidance.
What happens when a pressure sensor is damaged?
When a pressure sensor fails, it can cause many problems, depending on the application.
The following are some of the possible consequences of a malfunctioning pressure sensor:
Loss of accuracy: A malfunctioning pressure sensor may provide inaccurate readings or no readings at all. This can lead to improper process control, data acquisition, or safety issues.
System Failure: In some cases, a pressure sensor failure may cause the system to malfunction or shut down. For example, if a sensor in a hydraulic system fails, the system may stop functioning properly.
Safety Risk: If the pressure sensor is used in a safety-critical application, a malfunctioning pressure sensor could result in a safety risk. For example, a failed pressure sensor in a medical device or gas line could pose a safety risk to patients or the general public.
Increased Maintenance Costs: Failed pressure sensors may require additional maintenance or replacement, which can increase maintenance costs and prolong downtime.
Reduced Efficiency: Failed pressure sensors may reduce system performance or increase energy consumption. For example, a faulty pressure regulator in an HVAC system can cause the system to operate improperly, resulting in high energy costs.
In general, pressure sensor failures can have significant consequences, especially in applications where safety, accuracy, and reliability are critical. Therefore, it is important to monitor them regularly and replace them as necessary to prevent problems.
Trends and Developments in Pressure Sensors
Global Pressure Sensors Market Size
The global pressure sensor market is expected to grow from USD 18.5 billion in 2022 to USD 26.3 billion by 2030, at a CAGR of 4.6% during the projection period 2024-2030.
The regions analyzed for the pressure sensor market include North America, Europe, South America, Asia Pacific, the Middle East, and Africa. These are the key regions where the pressure sensor market is operating and is predicted to expand soon. The manufacturers and suppliers involved in the pressure sensor market are present across various countries in the above-mentioned regions.
Asia Pacific region dominated the pressure sensor market and held a 39% share of the market revenue in 2022.
Germany’s pressure sensor market size was valued at USD 1.32 billion in 2022 and is expected to reach USD 1.90 billion by 2030, at a CAGR of 4.7% from 2024 to 2030.
China’s pressure sensor market size was valued at USD 1.8 billion in 2022 and is expected to reach USD 2.6 billion by 2030, at a CAGR of 4.9% from 2024 to 2030.
India’s pressure sensor market size was valued at USD 1.4 billion in 2022 and is expected to reach USD 2.03 billion by 2030, at a CAGR of 4.8% from 2024 to 2030.
The market growth can be attributed to the rising demand for energy-efficient pressure sensors for consumer electronics, automotive, and portable healthcare wearables.
Sources: GreyViews
Industries where pressure sensors are most commonly used
The automotive industry is one of the largest users of pressure sensors. the global automotive pressure sensors market is estimated to be US$6,120.00 million in 2022 and US$7.26 billion in 2024, and is expected to grow at a CAGR of 9.1% to US$12.26 billion by 2030. the medical industry is also a significant user of pressure sensors. the medical sensors market was valued at US$6.02 billion in 2021 and is expected to reach US$10.28 billion by 2027, at a CAGR of 9.1%.
The medical industry is also a significant user of pressure sensors, with the medical sensor market valued at US$6.02 billion in 2021 and expected to reach US$10.28 billion by 2027, at a CAGR of 9.64%. The development of new devices that provide faster analysis, lower cost, and ease of use is contributing to the growth of the medical sensors market.
Demand for pressure sensors is also increasing in the oil and gas industry. From 2021 to 2026, the market share of sensors in the oil & gas industry is expected to increase by US$1.73 billion with accelerating growth momentum of the market at a CAGR of 4.04%.
Pressure sensors are witnessing significant growth due to their increasing application in various industries such as alarm systems, water purifiers, medical respiratory devices, refrigeration systems and off-road construction. Additionally, the growing trend towards more automated solutions and services has led to increased interest in IoT-based devices for their innovative and advanced applications.
Sources: Research and Markets, Market Research, Technavio
Conclusions
This is a comprehensive definition of a pressure sensor, describing what it is, its type, principle of operation, application in various industries, and market prospects.
Technological advances are expected to drive the development of smaller, more accurate, and more cost-effective pressure sensors and pressure sensor molds, further increasing their use in a variety of industries.
Now I’d like to hear from you:
Do you think the growth of pressure sensors is sustainable? Would you like to know about other sensors such as infrared sensors, gas sensors or humidity sensors? What else would you like to see added to this article? Or have some questions?
Either way, please leave a comment below or contact us.
