Pressure Measurement & Control


Pressure gauges with diaphragm seals

February 2018 Pressure Measurement & Control

Diaphragm seals are partitions for pressure gauges that prevent material that is being measured from penetrating the measuring system. In industry, pressure sensors or pressure gauges cannot always be directly connected to the process connection. For measuring pressure in the food industry, the use of diaphragm seals are mostly indispensable. With the right choice of diaphragm seal systems, it is possible to solve measuring problems that can often not be overcome with a pressure gauge alone.

Kobold’s DRM range of diaphragm seals are designed specifically for such purposes. They are tailor-made to meet industrial requirements, and are available with all industry-standard connection types and fit perfectly with Kobold pressure gauges. In each case, an appropriate solution can be chosen from a wide range of designs, shapes and materials.

Kobold diaphragm seals allow measurements to be taken even with aggressive, highly viscous, solidifying or crystallising process media. They also protect the measuring devices against high temperature and pressure fluctuations, pressure peaks or vibrations.

Depending on the design, they can be used for measurements at process temperatures of up to 350°C and 1600 bar. The use of diaphragm seals is also recommended where there are special hygiene requirements and where specific media-appropriate materials are required. Kobold’s specifically-engineered and practice-oriented diaphragm seal system components make ‘dead-zone-free’ assembly an easily achievable goal. As the capillary tubes can be several metres long, the measuring devices can now be placed at a safer distance from harsh industrial environments.

Typical applications are in media enriched with solids, crystallising/polymerising/HMh viscosity/corrosive/toxic and environmentally hazardous measured media, as well as very low or high measured temperature media; hygienic requirements for the food and pharmaceutical sector and batch changing without product residues in the measuring system.

For more information contact Instrotech, +27 (0)10 595 1831, sales@instrotech.co.za, www.instrotech.co.za


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