This section provides an overview for pressure switches as well as their applications and principles. Also, please take a look at the list of 10 pressure switch manufacturers and their company rankings. Here are the top-ranked pressure switch companies as of April, 2023: 1.Wasco Switches & Sensors, 2.Nason, 3.Condor Werke Gebr. Frede GmbH.
Table of Contents
A pressure switch is a type of sensor that detects pressure from a fluid such as air or liquid. The switch is activated by the absolute value of the pressure, or by the magnitude of the change in pressure relative to a given pressure value.
There are two types of pressure switch sensors: semiconductor piezoresistive diffusion pressure sensors that detect pressure changes based on changes in the amount of current or voltage flowing through a built-in piezoelectric element, and capacitance type pressure sensors that detect pressure changes based on changes in capacitance of a built-in capacitor with a movable pole caused by external pressure. The capacitance type pressure sensor has a built-in capacitor with a movable pole.
Pressure switches are used in a variety of applications. They are used to control presses and molding equipment, as well as engine oil in automobiles and brake pressure in trains.
Pressure switches can also be used in harsh environments where they come in contact with corrosive or toxic chemicals. Explosion-proof pressure switches are also available for use where flammable substances are handled. These pressure switches are used in the chemical, oil, and gas industries, where chemical substances are handled on a daily basis.
Pressure switches are also used for air flow control in air conditioner compressors, cooling gases, vacuum cleaner suction, etc., and for pressure control of pumps and compressors in production equipment.
Pressure switches convert changes in pressure into electrical signals. There are three ways to express pressure changes: first, as positive or negative pressure based on atmospheric pressure; second, as an absolute value of pressure; and third, as a differential pressure, which is a change in pressure relative to an arbitrary pressure.
There are two methods of converting pressure into an electrical signal. The first is the semiconductor piezoresistive diffusion pressure sensor. The first is a semiconductor piezoresistive diffusion pressure sensor, which uses the "piezoelectric effect" to generate voltage when pressure is applied to a specific material. The second conversion method is the capacitance type pressure sensor, which contains a capacitor with a movable pole inside the sensor. When pressure is applied to the sensor, the capacitance of the capacitor changes due to the deformation of the movable pole. The amount of pressure change can be determined from this change.
The type of pressure switches used depends on the environment in which it is installed, the type of fluid with which it comes into contact, and the magnitude of the pressure to be detected. If the fluid is air, pressure switches for air is used, and if the fluid is liquid, pressure switches for general-purpose fluids is used. In environments where the fluid comes in contact with flammable substances such as organic solvents or natural gas, an explosion-proof pressure switches should be used.
In other environments where highly corrosive or toxic substances are present, chemical-resistant pressure switches should be used. When using pressure switches in locations where highly toxic substances are present, it is recommended to check not only the inside of the sensor, but also the chemical resistance of each part of the switch.
*Including some distributors, etc.
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SMC corporation was founded in 1959 and is headquartered in Tokyo, Japan. SMC Corporation manufactures and sells automatic control equipment and filtration equipment. SMC has production facilities in 30 countries, technical development centers in Japan, the United States, Europe, and China, and sales offices, globally. SMC product lines divided by them include filter replacements, condensation prevention, heat resistance, thermos-chilling, and others. SMC provides a video library as well as product selection guide to assist customers in finding solutions and optimizing product efficiency.
OMEGA Engineering was originally begun in 1962 as a manufacturer of thermocouples and has grown to over 100,000 products for measurement and control of temperature, humidity, pressure, strain force, flow, level pH, and conductivity as well as customer service including data acquisition, electric heating, and custom-engineered products. Additionally, OMEGA offers tools to serve as reference for engineers around the world. OMEGA Engineering serves the aerospace, automotive, wireless, sanitary, test & measurement, process control, power monitoring, environmental, and laboratory markets.
Ranking as of April 2023 in United States of America
Derivation MethodRank | Company | Click Share |
---|---|---|
1 | Wasco Switches & Sensors | 28.6% |
2 | Nason | 28.6% |
3 | Condor Werke Gebr. Frede GmbH | 14.3% |
4 | Barksdale Inc. | 14.3% |
5 | SMC Corporation. | 14.3% |
Ranking as of April 2023 Globally
Derivation MethodRank | Company | Click Share |
---|---|---|
1 | Wasco Switches & Sensors | 28.6% |
2 | Nason | 28.6% |
3 | Condor Werke Gebr. Frede GmbH | 14.3% |
4 | Barksdale Inc. | 14.3% |
5 | SMC Corporation. | 14.3% |
Derivation Method
The ranking is calculated based on the click share within the pressure switch page as of April 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
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