Pharma | Food | Biotechnology | Cosmetics Sanitary applications

Alexander Wiegand, Chairman and CEO, WIKA About us The WIKA Group is a global market leader in pressure and The family-run business, founded in 1946, has a global standard in the measurement of level, force and flow, and in subsidiaries, production sites and development departments, temperature measurement. The company also sets the calibration technology. such as the Innovation Center in Klingenberg. The broad portfolio of high-precision instruments, IIoT There alone, over 100 engineers work on innovative sensing and reliable partner for all the requirements of industrial unique experience and...

Electronic pressure measuring instruments 10 Mechanical pressure measuring instruments 16 Electrical temperature measuring instruments 27 Mechanical temperature measuring instruments 33 Gravimetric level measurement 34 Force measuring instruments 36 Level measuring instruments 38 In the manufacture of food and pharmaceuticals, safety in production and the prevention of any risks to those using the finished product is of the highest priority. In the chain of all the process components within a plant, measurement technology plays a key role. Measurement technology delivers process-specific information...

Hygienic design The hygienic design of plant components in contact with products is an essential prerequisite for avoiding microbiological contamination, and with that, ensuring product quality. As part of the overall hygienic concept of a plant, the measuring instruments used must comply with special requirements on material, surface quality, process safety, connection engineering and cleanability in the scope of the CIP process. As a company member of the European Hygienic Engineering and Design Group (EHEDG), WIKA contributes to the international standards and combines hygienic design with...

Hygienic design By using electrolytic polishing, the cleanability of the surfaces can be improved. In this way, essentially, the topographical structure of the surfaces is smoothed and therefore the roughness is decreased. A further advantage is that electropolishing increases the passive layer of stainless steel, and thus the corrosion resistance is improved, especially with reducing media.

Sealing materials In the selection of suitable sealing material, various process parameters and also the process media are important. Sealing materials must be toxicologically harmless and sufficiently resistant to abrasion, be resistant against aggressive cleaning and disinfecting media, and be stable in superheated steam at high sterilisation temperatures. Predominantly, special compounds are used for O-rings or form seals, for example fluororubber-based (FKM) such as VITON®, ethylene-propylene-diene material (EPDM) or poly-tetra-fluoro-ethylene (PTFE). The materials used for the sealing elements,...

Hygienic design Process connections Process connections which are used in CIP-compatible equipment should not constitute any risk in respect to cleaning. They are characterised by the following features: ■ A defined compression of the sealing element through a metallic stop ■ Centring via a cylindrical guide ■ Crevice-free sealing on the inside of the pipe For this, there are connections such as those in accordance with DIN 11864, NEUMO BioConnect®, BioControl® and VARIVENT®. The widely used connections in accordance with DIN 11851 (milk thread fitting) and per ASME BPE and DIN 32676 (clamp)...

Case The design of the non-wetted parts must be made so that the equipment is easy to clean from the outside as well. Particularly with open processes in food production, the machinery and equipment must be cleaned after production. For this, WIKA has developed specific hygienic design cases. These are easy to clean from the outside. Without any gaps or corners and with a high IP protection, these are especially suited to the harsh conditions of washdowns.

Hygienic design Directives and standards WIKA combines hygienic design with high-quality measurement technology. We actively participate in international standards committees such as EHEDG, 3-A and ASME BPE. The latest market requirements flow into our product development. FDA (Food and Drug Administration) EHEDG (European Hygienic Engineering & Design Group) Date of issue: 10 January 2023 Valid until: 31 December 2024 ISSUE DATE: September 10, 1991 CERTIFICATE AUTHORIZATION NUMBER: 646 (/&ODVV, THIS IS TO CERTIFY THAT EHEDG hereby declares that the product pressure transmitter model PEU-21,...

Electronic pressure measuring instruments Electronic pressure measurement contributes to the precise With pressure measuring instruments, alongside the Alongside temperature, pressure is the most important and measurement, a full range of process steps can be and energy-saving control and regulation of processes. most common technology for monitoring and controlling plants and machinery. monitoring of process pressure and hydrostatic level controlled, such as the dosing of inert gas blankets, the monitoring of filters in downstream areas and filling pressures. For the various applications there...

The following electronic measuring instruments are particularly recommended for use in sanitary applications and for combination with diaphragm seals for a hygienic adaption to the process. For demanding industrial applications (± % of span) £ 0.125, 0.25 or 0.5 BFSL Measuring range ■ 0 ... 0.4 to 0 ... 1,600 bar Electronic pressure switch with display Special feature ■ Extreme operating conditions Special feature ■ Further worldwide Ex approvals ■ High -pressure version (optional) ■ Flush process connection (optional) Special feature Condition monitoring via lO-Link Reduction of variants Easy...

Pressure sensors The flush metal measuring cell of the SA-11 is directly welded to the process connection and fulfils the high demands of sanitary applications. With the gap-free connection without additional sealing between the process connection and the measuring cell, risks of leakage are eliminated. For dead-space free instrumentation, numerous hygienic process connections are available. This is certified per 3-A Sanitary Standards as well as EHEDG. The SA-11 pressure transmitter is exceptionally suitable for both the cleaning processes Cleaning-in-Place (CIP) and also for Sterilisation-in-Place...