Diaphragm seals are used to protect the pressure measuring instrument from aggressive, adhesive, crystallising, corrosive, highly viscous, environmentally hazardous, or toxic media.
A diaphragm made of the appropriate material provides for the separation from the medium to be measured. Even the most difficult measuring requirements can be met by combining measuring instruments with diaphragm seals.
A fluid inside the system that hydraulically transmits the pressure to the measuring instrument can be chosen to suit the particular application.
The diaphragm seal systems can withstand the cleaning vapour temperatures occurring in the SIP processes. This ensures a sterile connection between the medium to be measured and the diaphragm seal.
Assembly of the diaphragm seal and measuring instrument is made via a direct assembly as standard. Optionally this can be done via a cooling element or a flexible capillary.
The upper part and the diaphragm are made of identical materials. Stainless steel 316L (1.4435) is used as standard material. Other special materials are available on request.
Measuring systems with model L990.22 WIKA diaphragm seals are successfully used worldwide in the food, bio, and pharmaceutical industries, as well as in paint finishing systems.