Within the European Community, intrinsically safe pressure sensors may only be used in hazardous areas if they are installed in conjunction with an Ex barrier. The combination of pressure sensor and Ex barrier must meet the “ Proof of intrinsic safety ” in …
Ex protection
Dust explosion, the underestimated danger – Pressure sensors must meet requirements for the maximum permissible surface temperature
| Stefan Heusel | Know-howWith 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 …
Proof of intrinsic safety for an ATEX-approved pressure sensor
| Stefan Heusel | Know-howIn 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 …
Worldwide use of Ex instruments and Ex pressure sensors due to international IECEx approval
| Stefan Heusel | Know-howPressure 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 …
When does a sensor modification require changes to the approval?
| Stefan Heusel | Know-howGenerally, 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 …