Pressure transmitter product portfolio from Trafag

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Explanation of the structure

Trafag offers a broad and deep range of pressure transmitters optimized for the specific requirements in a wide variety of applications. The extensive portfolio, which has grown continuously over a period of more than two decades, is clearly structured to allow rapid identification of the most suitable product. With the help of the table, the suitable product can be easily identified:

The gray rows (horizontal) show the target applications and the corresponding standard requirements. The orange columns (vertical) show the internal structure and the product families.

Trafag product portfolio overviewTrafag product portfolio overview

Target applications

The main applications for pressure transmitters can be found in the product groups «Industry», «Railways», «Shipbuilding and large engines», «Hydrogen» and «Test and test bench technology» and thus in the first column:

    • The «Industry» product group includes products that do not meet any special standards and are frequently used in hydraulic or pneumatic applications as well as in machines and systems for measuring the pressure of a wide variety of gases and liquids.
    • In «railroad technology» for trains, pressure transmitters are used that must comply with certain railroad standards such as EN 50155.
    • In «shipbuilding», approvals from classification societies are required. In addition, approved pressure transmitters are used in «engines». Therefore, these two groups are shown in the table in the same area.
    • Pressure transmitters for «hydrogen applications» require a sensor measuring cell and other wetted parts that are compatible with hydrogen.
    • Pressure transmitters for «test and test bench technology» are characterized by a particularly high measuring accuracy.

As a subgroup of the target applications, models are highlighted in each case that have either approvals for explosion-proof areas or digital output signals such as CANopen or IO-Link.

Columns "Industries" of the Trafag product portfolioColumns "Industries" of the Trafag product portfolio
Canopen and IO-Link products from TrafagCanopen and IO-Link products from Trafag

Internal structure of pressure transmitters

The internal structure of pressure transmitters is classified according to the sensor technology used. So thin-film-on-steel, thick-film-on-ceramic as well as piezoresistive sensors.

Products with the same sensor technology are available in different versions, each adapted to the requirements of the target application. The product families differ in design and size.

  • The pressure transmitters with thin-film-on-steel sensors are available in width across flats (SW or HEX) 19mm and 27mm, with display as well as in special versions, such as flush-mounted sensor diaphragm.
  • Thick-film-on-ceramic and piezoresistive sensor technology are used in submersible products for level measurement of liquids.
  • Variants with a digital display are available for products with both thin-film-on-steel and thick-film-on-ceramic sensor cells.

Article and video «How does a pressure transmitter work?»

Whitepaper with explanatory video on "How does a pressure transmitter work?"Whitepaper with explanatory video on "How does a pressure transmitter work?"

Trafag pressure transmitters are always marked with a four-digit product number and a three to four-digit product designation. The designation stands for a specific product type within a product family. The numerical code distinguishes between different generations of the same product type.

For example: The thin-film-on-steel pressure transmitters of width across flats 27 (without Ex approval) belong to the EPx product family, where the small x stands for the designation of the target application of the respective model (I=Industry, R=Railway, N=Naval). So EPR is a SW27 wrench size pressure transmitter with a thin-film-on-steel sensing element for railroad applications. It is available with product code 8283 and 8293. The difference between the two codes is the product generation: the EPx with code 828x are the newer generation, the EPx with code 829x are based on the older chip technology. Click on the link in the context menu, you will learn more about the product and also get to the data sheet with all relevant technical specifications.

The current structure was not created on the drawing board, but has grown over many decades. Therefore, there are various exceptions to the rules described above for the labeling of product families. Furthermore, there are products that can be used in several application areas and are therefore listed several times in the overview table.

8283 Railway pressure transmitter from Trafag8283 Railway pressure transmitter from Trafag

If you are not sure which Trafag product is best suited for your application, please contact us. Our specialists will be happy to provide you with competent and comprehensive advice.

Our pressure transmitters in detail

About the author

Andreas Koch

Head of Marketing and Product Management

Dipl. Ing. FH (Mechanical Engineering), EMBA

At Trafag since 2011

Andreas Koch, Head of Marketing and Product Management bei Trafag AGAndreas Koch, Head of Marketing and Product Management bei Trafag AG