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Solutions for pressure, temperature, force and level measurement, flow measurement, calibration and SF6 gas solutions from WIKA are an integral component of our customers' business processes.
This is why we consider ourselves to be not just suppliers of measurement components but rather more a competent partner that offers comprehensive solutions in close co-operation with our customers – customised and precisely designed products for the exact requirement.
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With union nut (milk thread fitting)
Diaphragm seals are used for the protection of pressure measuring instruments in applications with difficult media. In diaphragm seal systems, the diaphragm of the diaphragm seal effects the separation of the instrument and the medium.
The pressure is transmitted to the measuring instrument via the system fill fluid which is inside the diaphragm seal system.
For the implementation of demanding customer applications, there are a wide variety of designs, materials and system fill fluids available.
For further technical information on diaphragm seals and diaphragm seal systems see IN 00.06 "Application, operating principle, designs".
The model 990.18, 990.19, 990.20 and 990.21 diaphragm seals with threaded connection are particularly suited for use in the food industry. The diaphragm seals can withstand the cleaning vapour temperatures occurring in the 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 option, be electropolished.
Model 910.21
For mounting to zone 0 (EPL Ga)
Model 910.16
Model 990.17
DRD connection
Model 990.60
For Sterile Process Technology
Models 981.22, 981.52, 981.53
With clamp connection (TRI-CLAMP®)
Model 990.51
Aseptic connection per DIN 11864
Model 990.50
For sanitary applications, NEUMO BioConnect®
Models 990.22, 990.52, 990.53
Loose diaphragm seals
Reduced risk - Diaphragm seal systems for safety applications (PDF)
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