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Failure

Flushing rings in diaphragm seal systems have several advantages

12/22/2022 | Tobias Hench | Know-how
Flushing ring in a diaphragm seal system for the process industry

The extension of a flanged diaphragm seal system using a flushing ring brings significant advantages. Among other things, it enables easy cleaning and, in addition, on-site calibration of the measuring location. Diaphragm seal systems are used in processes with …

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Play it safe with double block & bleed

08/24/2021 | Pratik R. Vishwakarma | Know-how
Play it safe with double block & bleed

What is the safest way to separate a process and the attached pressure measurement technology? The HSG 253 standard must be applied to this question, and it answers unequivocally: by means of an instrumentation valve with double block & bleed (DBB). This …

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SIL-certified: Functional safety with mechanical switches

01/20/2021 | July Yang | Know-how
Functional safety: SIL-certified mechanical switches

Mechanical pressure and temperature switches perform sensitive tasks in safety-relevant applications, e.g. monitoring limit values. Their functional safety must be guaranteed accordingly. This is always the case if the instruments fulfil the requirements of the …

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MTTF and MTTFD – What is the difference?

08/25/2020 | Arndt W. Jahns | Know-how
What is a MTTF bzw MTTFD

The MTTF value is a term from the field of risk analysis & risk evaluation. The exact meaning is m ean t ime t o f ailure or simply the mean life of a component. The MTTF has gained particular relevance due to EN ISO 13849-1. In accordance with this standard, …

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New ScrutonWell ® design for thermowells

05/26/2015 | Kai Grabenauer | Temperature
NEW ScrutonWell® design

In order to avoid any damage to the thermowell during operation due to mechanical loads, a thermowell calculation per ASME PTC 19.3 TW-2016 is recommended for critical process conditions. In case of a calculation with negative results, the only constructive solution so …

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Welcome to the WIKA blog

In our English-language blog you can expect many interesting articles on pressure, temperature, level, force and flow measurement, and also on the subject of calibration technology. Furthermore, there are various insights into the world of the WIKA group of companies – seen from different angles.

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  • Difference between gauge pressure and absolute pressure measurement
  • Pt100 in 2-, 3- or 4-wire connection?
  • Bourdon tube pressure gauge – operating principle
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