Validation of calibration software - as required by ISO 17025, for example - is a topic that people don't like to talk about. Often there is uncertainty about the following: Which software actually must be validated? If so, who should look after it? Which requirements …
Know-how
Vibration protection: Case filling vs. dampened movement
Christopher Ott | Know-howVibrations can sometimes violently load Bourdon tube pressure gauges. They cause pointer flutter and also, in the event of sustained loading, damage to the measuring system, even to the point of total failure. The most effective protection against these effects is …
DIN 3852-E or DIN EN ISO 1179-2?
Sabine Mai | Know-howThe DIN 3852-E pressure connection thread standard has been invalid since 2012. The standard that has been valid since then for pipe threads (e.g. for G ¼ A) is DIN EN ISO 1179-2: “Connections for general use and fluid power - Ports and stud ends with ISO 228-1 …
Repeatability or non-repeatability?
Michèle Beyer | Know-howAs a product manager, you sometimes face the challenge of making decisions for which there is no “right” or “wrong”. What sounds very philosophical at first has a very real background. The repeatability or, indeed, non-repeatability of a pressure switch …
Ex protection – The most common ignition protection types for sensors in gas hazardous areas
Jens Bargon | Know-howThe use of sensors in hazardous areas can be realised through different, defined design concepts, referred to as ignition protection types. In the following, the most common of these ignition protection types for sensors for gas hazardous areas will be briefly …