|Pressure range||0 ... 1 bar to 0 ... 25 bar|
|Level of cleanliness of wetted parts||Oil and grease free per ASTM G93-03 level F WIKA standard (< 1,000 mg/m²)|
|Surface roughness of wetted parts||Ra ≤ 0.76 µm [30 µin] per ASME BPE SF3 (except for weld seam)|
|Connection to the measuring instrument||Axial gauge adapter|
|Type of mounting||Direct mounting|
|Vacuum service||Basic service|
Due to their hygienic process connection, the WIKA 990.24 sterile connection diaphragm seals are particularly well suited for food production.
With this diaphragm seal, pressure measuring instruments can be integrated, dead-space free, into a pipeline using a VARINLINE® access unit or in tanks using a connecting flange for VARINLINE® access units. The diaphragm seals can withstand the cleaning vapour temperatures occurring in the CIP and SIP processes and thus ensure a sterile connection between the medium to be measured and the diaphragm seal.
Mounting of the diaphragm seal to the measuring instrument may be made via a direct connection, for high temperatures via a cooling element or via a flexible capillary.
For the material selection, WIKA offers a variety of solutions, in which the upper body of the diaphragm seal and the wetted parts can be made of identical or different materials. The wetted parts can, as an alternative, be electropolished.
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