Pressure Switch

Thông tin chi tiết

In the modern industrial world, the monitoring and control applied in the system is extremely important. This not only ensures optimal working performance but also plays an essential role in protecting labor safety. Performance measurement equipment, with a variety of types and functions, has become an indispensable tool in many manufacturing, medical and civil industries.

1. Introduction to Pressure Measuring Equipment

- Pressure is a typical physical quantity. This term represents the force acting on a unit area in a direction perpendicular to the surface of the object. Pressure is measured in units such as pascals (Pa), bar, psi, or mmHg, depending on the specific application.
- Pressure measuring equipment is an indispensable tool in measuring and monitoring pressure in systems. They help ensure processes operate consistently and safely. A pressure measuring device is an instrument that measures the pressure of a liquid or gas. There are many different types of pressure measuring devices, each designed for use in specific applications.

2. The importance of pressure measuring equipment

In every industry, from food to pharmaceuticals, from oil and gas to energy, pressure measuring equipment plays an important role in controlling and maintaining stable working pressure. Here are some specific applications for you to easily understand the importance of Pressure Measuring Devices:

Monitor and control the process
Accurate pressure measurement helps ensure that industrial processes proceed safely and efficiently. In the chemical process industry, tight pressure control is important to prevent toxic chemical leaks and ensure product quality. In oil and gas production, pressure monitoring helps prevent oil spills, protect the environment, and ensure employee safety. In the field of power generation, pressure measuring equipment plays a role in controlling steam pressure, ensuring optimal performance of turbines.
Application in the medical industry
Not only limited to industries, pressure measuring devices are also widely used in the medical industry. They are used to monitor and control blood pressure, an important indicator of cardiovascular health. In addition, pressure measuring devices also assist in monitoring and treating other medical conditions such as glaucoma and intracranial pressure, contributing to better health care for patients.
Predict and Prevent incidents
One of the most important benefits of using pressure measuring equipment is the ability to predict and prevent problems before they occur. By continuously monitoring and analyzing pressure data, these devices can help identify abnormalities early, allowing timely corrective measures to be taken. This not only minimizes safety risks but also helps save on maintenance and repair costs.

3. Common types of pressure measuring devices

Pressure Gauges
- Pressure gauges are the most common type of pressure measuring device. They have a dial that displays pressure in psi, bar, or kPa units. Pressure gauges can be used to measure the pressure of liquids and gases in a variety of applications, including plumbing, pneumatic systems, and industrial equipment.
- A pressure gauge is a type of pressure measuring device that uses a liquid column to measure pressure. The commonly used liquid is mercury or water. Pressure is determined by the height of the liquid column. Mercury barometers are used in a variety of applications, including medical, scientific, and meteorological.

Pressure sensors
- A pressure sensor is a type of pressure measuring device that generates an electrical signal proportional to the applied pressure. Pressure sensors are used in a variety of applications, including industrial, medical, and automotive.

Pressure Switches
- A pressure switch is a device that senses the pressure of a liquid or gas and activates an electrical switch when the pressure reaches a preset level. Pressure switches are used in a variety of applications, including industrial, medical and automotive.
- There are two main types of pressure switches:
+ Mechanical pressure switches use a mechanical mechanism to sense pressure and activate an electrical switch. Mechanical pressure switches are relatively simple and inexpensive, but they may not be as accurate and reliable as electronic pressure switches.
+ Electronic pressure switches use electronic sensors to sense pressure and activate the electrical switch. Electronic pressure switches are more accurate and reliable than mechanical pressure switches, but they are also more expensive.

However, the pressure switch only provides information about whether the pressure is above or below a specified level but does not provide an exact value of the pressure level.
Thus, pressure gauges, pressure sensors and pressure switches are all devices used to measure pressure but they have different functions and applications.
Comparison table of the 3 pressure measuring devices mentioned above to give you the best overview:

Criteria	Pressure Gauges	Pressure sensors	Pressure Switches
Function	Measure and display pressure values in real time	Measure and convert pressure into electrical or analog signals.	Open or close an electrical circuit when the pressure is at a specific level.
Principle of operation	Use mechanical or electronic.	Use the sensor to measure the pressure force and convert it into an electrical or analog signal.	Uses mechanics or electronics to open or close a circuit when the pressure reaches a set level.
Type of pressure being measured	Static pressure or dynamic pressure.	Static pressure or dynamic pressure.	Static pressure or dynamic pressure.
Unit of measure	Usually psi, bar, kPa, mmHg, etc.	Usually psi, bar, kPa, mmHg, etc.	Usually psi, bar, kPa, mmHg, etc.
Accuracy	Varies depending on type and range	Generally more accurate than pressure gauges	Generally less accurate than pressure sensors
Expense	Cheaper than pressure sensors and pressure switches	Usually more expensive than pressure gauges but cheaper than pressure switches	Generally the most expensive of the three types of equipment
Application	Air conditioning and refrigeration. Industry and process. Oil and gas.	Automotive and industrial. Measurement and control system. Oil and gas.	Ventilation and air conditioning system. Industry and process. Manage pressure in the system.

4. Operating principle of Pressure Measuring Device

- When the pressure in the system increases, it pushes on the pressure sensor, causing this component to contract and convert into an electrical signal. Depending on the type of pressure sensor, this electrical signal can be a voltage, current or frequency value.
- The electronic part in the pressure relay will process this signal and compare it with the set value. If the signal value exceeds the set value, the circuit will be activated to turn on the pressure-related device.
- When the pressure in the system drops. The pressure sensor will open and the electrical signal will decrease or disappear. The circuit will continue to monitor the value of the signal, and activate the circuit. To turn off the pressure-related device if the signal value drops below the set value.

5. Choose the appropriate pressure measuring device

When choosing a pressure measuring device, factors such as:
- Measuring range: Choose a device with a measuring range that matches the application requirements. The device should be able to measure the maximum and minimum pressure required.
- Working environment: If the device will operate in an environment of high humidity, corrosive substances, or extreme temperatures, it is necessary to choose a device that is waterproof, corrosion-resistant, and capable of withstanding high temperatures.
- Required accuracy: Different pressure measuring devices have different levels of accuracy. It is important to choose a device that meets the accuracy requirements for your application.
- Type of pressure to measure: Different pressure measuring devices are designed to measure different types of pressure. Specifically, absolute pressure, gauge pressure and differential pressure. It's important to choose a device designed to measure the type of pressure you need.

6. How to maintain and check pressure measuring equipment

Regular maintenance and testing of pressure measuring equipment is important to ensure the accuracy and reliability of the equipment.

7. Things to note when buying pressure measuring equipment

Choose equipment from reputable manufacturers and ensure it has the appropriate certifications and standards for the application.

8. Brands providing reputable pressure measuring equipment on the market

Brand Autosigma
The Autosigma pressure tester has the following advantages:
- High accuracy: Autosigma pressure tester can measure pressure with high accuracy.
- Easy to use: The Autosigma pressure tester is easy to use and does not require extensive training.
- Affordable: Autosigma pressure test kits are affordable and suitable for many budgets.
The Autosigma Pressure Tester is a valuable tool for measuring the pressure of liquids or gases. It can be used in many different applications and provides many benefits to users.

For details, refer to the Autosigma pressure tester at: Amazen electrical equipment

Siemens brand
Siemens is a global electrical and electronics technology group that represents technical achievements, innovation, quality, reliability and internationality. With a history of more than 165 years of establishment, operations in more than 200 countries and more than 25 years of joining Vietnam, Siemens has a solid foothold and is trusted globally.

Some advantages of Siemens pressure measuring equipment:
- Easy to use
- Durable
- High precision
- Good product quality
- Origin from Germany

9. FAQs -Frequently Asked Questions

9.1. How are electronic and mechanical pressure measuring devices different?
9.2. How to maintain pressure measuring equipment?
9.3. Where should I buy a pressure measuring device to ensure quality?
9.4. In what environments can the pressure measuring device be used?
9.5. What new technology is being applied in pressure measuring equipment?

10. Conclusion

Pressure measuring equipment is an integral part of ensuring the safety and efficiency of systems in many industries. Careful equipment selection and maintenance will help optimize performance and ensure safety in production operations.

Epilogue
In case you need to learn, need technical advice and order a Pressure Tester, please contact Amazen immediately via:

Hotline: 0934 399 068 - Sales: 0938 072 058
Email: amazen@amazen.com.vn

With a team of highly specialized technical support and sales consultants, our company is confident that it will bring customers the best purchasing experience.
Amazen commits that all inverter products we currently offer are genuine, 100% brand new, quality guaranteed and fully accompanied by certification documents.