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Ex protection

Dust explosion, the underestimated danger – Pressure sensors must meet requirements for the maximum permissible surface temperature

Stefan Heusel | Know-how
Image: dust explosion

With the key phrase “potentially explosive atmospheres”, many users immediately think about areas that contain flammable gases and now know that only ATEX-approved pressure sensors may be used in plant and machinery in these areas. Frequently, however, they …

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Proof of intrinsic safety for an ATEX-approved pressure sensor

Stefan Heusel | Know-how
table: intrinsically safety

In the European Union, the ATEX Directive 94/9/CE is compulsory for plants or machines, in which hazardous substances are processed or produced. It states that only ATEX-approved instruments must be used in hazardous areas within Europe. One frequently selected …

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Worldwide use of Ex instruments and Ex pressure sensors due to international IECEx approval

Stefan Heusel | Know-how
ATEX and IECE protection

Pressure sensors and electronic devices may only be used in hazardous areas if they have been tested and approved by a recognised authority in terms of their explosion protection features. So far, this was mostly carried out by a national institution which, after …

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When does a sensor modification require changes to the approval?

Stefan Heusel | Know-how
intrinsically safe sensor?

Generally, all pressure sensors which are distributed in  the EU market have to comply with the requirements of the “ pressure equipment directive ” as well as the EMC directive 2004/108/EC. Depending on the application or location of operation, a variety of …

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Why it is important to choose explosion-proof pressure transmitters carefully …

Ahmad Desuki | Know-how
illustration: Ex-d

In order to be safe for use in the hazardous locations, pressure sensors that are suitable for use in that hazardous area need to comply with one of the many protection types available. A common route is to use a pressure sensor possessing the Ex-d protection type, …

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Welcome to the WIKA blog

In our English-language blog you can expect many interesting articles on pressure, temperature, level, force and flow measurement, and also on the subject of calibration technology. Furthermore, there are various insights into the world of the WIKA group of companies – seen from different angles.

Most-read articles
  • Difference between gauge pressure and absolute pressure measurement

  • Pt100 in 2-, 3- or 4-wire connection?

  • Differences between G1/4″ threads

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