Diaphragm pressure gauges are considered as specialists in the process industries. They come into play when Bourdon tube pressure gauges reach the limits of their performance. One of the advantages of diaphragm pressure gauges is the measurement of low pressures. …
Measuring range
Maximum pressure for pressure connection G 1/8 and 1/8 NPT
| Michèle Beyer | Know-howWhy are the threads G 1/8 and 1/8 NPT offered for pressures only to a nominal pressure range of 400 bar? Where does this limit come from? Basically, the explanation is very simple: From a certain pressure limit, the thread flanks are no longer "strong" enough to …
Conversion of pressure units
| Sabine Mai | Know-howThe common units for the measurement parameter pressure are bar, psi, kg/cm², inHg and MPa, for example. In most cases, one unit has become established in a particular country or region. As a result, it often happens that one must convert a given pressure value into …
International pressure units
| Michèle Beyer | Know-howYou must have already asked yourself once in a while why there are so many different pressure units worldwide: when are they used and which units are used most frequently and where? These questions can be answered quite easily: the SI unit for the physical quantity …
Aim and purpose of a vent hole in pressure sensors
| Michèle Beyer | PressureIn so-called “gauge sensors” pressure is always measured relative to the currently prevailing ambient pressure. However, the ambient pressure is by no means constant. It is location- and height-dependent and changes with the weather. This means that for a …