08/11/2011 | Author / Editor: Jennifer Breunig / Jörg Kempf When
specifying pressure measurement systems one of the most
important aspects is the pressure gauge or transducer itself. If
the process requires sterile connections measuring elements with
a diaphragm seal should definitely be considered. Many standard
pressure sensors and gauges have crevices and dead spaces which
make them unsuitable for hygienic applications. They may also be
damaged by the high temperature of the steam used for
sterilization in place. In such cases, a diaphragm seal not only
provides a safe and sterile connection between the medium and
the measuring instrument, but also allows simple cleaning
between batches. A diaphragm seal separates the pressure gauge,
transmitter or switch from the medium being measured and ensures
a process connection in which dead spaces are minimized or
eliminated. Isolation is achieved by means of a flexible
diaphragm, with the internal space between the diaphragm and the
pressure measuring instrument c