Absolute/Gage pressure switches

Absolute/Gage

Discover the difference between absolute and relative pressure switches and how to choose the best one for your needs. Read our SEO-optimized guide to learn all about pressure switches and find the perfect one for you.

What are Absolute and Relative Pressure Switches?

Absolute and relative pressure switches are devices used to measure pressure in various contexts. Absolute pressure switches measure pressure relative to absolute vacuum, while relative pressure switches measure pressure relative to atmospheric pressure. This distinction is crucial in selecting the most suitable pressure switch for your specific application.

Advantages of Absolute Pressure Switches

Absolute pressure switches are particularly useful in applications where atmospheric pressure can vary significantly, such as at high altitudes or in aerial environments. Since they measure pressure relative to absolute vacuum, absolute pressure switches provide precise and accurate measurements, regardless of changes in the surrounding environment.

Advantages of Relative Pressure Switches

Relative pressure switches are commonly used in industrial and domestic applications, where atmospheric pressure is constant or does not significantly affect the measurements. They allow for precise measurements of relative pressure, offering the flexibility to calibrate the pressure switch to a specific reference pressure.

Applications of Absolute and Relative Pressure Switches

Absolute pressure switches find use in sectors like aerospace, meteorology, and other applications where atmospheric pressure can vary significantly. On the other hand, relative pressure switches are widely used in industrial processes, heating and cooling systems, and automation.

How to Choose the Right Pressure Switch for You

When selecting a pressure switch, carefully consider the specifications of your project or application. Evaluate the measurement range, accuracy, environmental conditions in which it will be used, and special features like digital interfaces or resistance to vibrations.

Learn all you need to know about absolute and relative pressure switches and how to choose the one that suits your needs best. Read our SEO-optimized guide to achieve precise and reliable pressure measurements, regardless of the usage context.

Rugged. Few moving parts. Diaphragm drive. Adjustable fields of intervention: the alarm point can be adjusted with an accuracy of ± 5% of the field.

Pressure switches for light industry and refrigeration. Pressure ranges: from -0.2 to 21 bar High contact load - ultra short rebound time

The Danfoss RT-E pressure switches used in the certified area have a gold-plated changeover contact (SPDT). Approvals: Ex II 2G Ex IA IIC T6 Gb. Designed for use in zone 1.

Danfoss differential and relative pressure switches. Pressure fields: from -1 to 30 bar. Adjustable differential. IP66 protection level.

Suitable for use in monitoring alarm and control systems in factories, diesel plants, compressors, power stations and on board ships. IP 67 protection.
Resistance to shocks and vibrations. Adjustable or fixed differential.

Pressure measurement of any gas, liquid or oil.
High display resolutions
One-touch connector type for easy wiring and maintenance

Contact type: SPDT Connection type: to terminal board Also ATEX version (ATEX II 2 G EEx d IIC T6) c

Switching output: 2 transistors PNP
Output: 4-20 mA
Ceramic sensor or thin film on steel
Configurable via NFC Smartphone App
Process connection: 1/4 "Gas-M