Pressure gauges for pharmaceutical processes: Flush-mounted ?dry measurement?

Are pressure gauges ideal for pharmaceutical processes? Yes, if they’re available in a version with flush diaphragm element. You can find two advantages of a mechanical pressure measurement with this type of instrument: Diaphragm pressure gauges measure ?dry? and therefore reduce the threat of contamination. In addition, they offer a reliable measurement, even yet in critical situations, due to their extremely robust diaphragm element and the high overload safety.
In numerous pharmaceutical processes, diaphragm seal systems are accustomed to control the procedure pressure, also in conjunction with a pressure gauge. Endorsed separates the measuring instrument from the procedure and therefore protects it against influences. Its sensitive diaphragm for the transmission of pressure through liquid is relatively thin, due to the accuracy of measurement. When compared to diaphragm because the pressure sensing component of a diaphragm pressure gauge, it is therefore more susceptible, both to unpredictable process conditions (pressure peaks, overload) also to mechanical influences. If the diaphragm is damaged, system fill fluid can enter the procedure.
The mechanism of a PG43SA pressure gauge with flush diaphragm element
No contamination
Pressure gauges with a flush diaphragm element eliminate such contamination given that they operate without liquid. Their robust diaphragm element transmits the pressure, with a link, directly to the movement. It is two to five times as thick as a conventional diaphragm seal diaphragm. The diaphragm element is therefore effectively protected against unexpected physical effects. Furthermore, it can absorb a higher overload ? with WIKA instruments this is around five times the nominal pressure.
Furthermore, pressure gauges for pharmaceutical processes must meet the stringent requirements for sanitary applications in every respect. It has been implemented by WIKA in its PG43SA series. For their instruments, a diaphragm component of only 35 mm in diameter originated. Due to its special wave contour and the thickness of its material, the diaphragm includes a measuring quality much like the diaphragm part of an average process instrument ? though this might be more than twice the size for a comparable pressure range.
Easily cleanable
All instruments of the PG43SA series comply with the rules of hygienic design, the 3-A Sanitary Standard and so are certified to EHEDG. They’re ideal for CIP/SIP processes and are optionally completely autoclavable.
Two of the models (PG43SA-S and PG43SA-D) are pressure gauges with a radial process connection. For the model PG43SA-C, however, the process connection is integrated into the case. Colossal -pending design enables space-saving and therefore flexible installation.
Integrated safety system
The model PG43SA-D has been tuned to suit particularly critical processes. The pressure gauge includes a patent-pending integrated safety system. It includes another protective barrier and diaphragm element monitoring. Should an urgent diaphragm rupture occur, the procedure and measuring instrument remain securely separated. The medium cannot escape into the environment and likewise, nothing contaminating can find its way in to the process. Any instance of damage becomes known immediately: The diaphragm element monitoring reports it directly via a red indicator on the dial.
Designed as pressure gauges for pharmaceutical processes (f. l. t. r.): Model PG43SA-S (standard), model PG43SA-C (process connection in the event) and model PG43SA-D (with additional safety system).
Note
For detailed information about the three diaphragm pressure gauges PG43SA-S, PG43SA-D and PG43SA-C, please visit the WIKA website. A concise overview is supplied by the flyer because of this instrument family.
For more info please watch the next video about the diaphragm pressure gauges of the PG43SA series:

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