An important parameter in the use of pressure sensors in safety devices is the so-called “Diagnostic Coverage” (DC). However, since single-channel, in particular, but also two-channel safety circuits often malfunction or may be defective, a known diagnostic …
Know-how
Characteristics of the display of a digital indicator
Anna Zeitler | Know-howThe characteristics of the display are an important selection criterion when deciding on a digital indicator. Here, there are different points that must be considered: 1. The number of segments This concerns the segments used to display the numbers. The …
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 …
Differences between G1/4″ threads
Michèle Beyer | Know-howWhat is the difference between the numerous G 1/4" threads? And are they compatible among one another? One of my colleagues also often has troubles and gets confused because of all the various G 1/4" threads which the market has to offer, or which are requested by the …
SIL? PL? What is the probability of failure of a safety function?
Stefan Heusel | Know-howCustomers often ask us: “Can my product be part of a safety function? Which standards or directives apply in this case?” The most important safety directives and standards available today are SIL (Safety Integrity Level) and PL (Performance Level). These …




