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Switching function

Temperature switches in machine building: Which type suits?

02/09/2018 | Roland Sachs | Know-how
Buzzer

Temperature switches are used in machine building and other industrial applications for limiting temperature. They monitor the temperature and react at a predefined point. To protect from overheating they either switch the equipment or machine off or switch on a fan …

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How does one specify the switch point of a float switch?

02/02/2018 | Enrico Bossart | Level
a float switch

In the specification of the switch points of a float switch, misunderstandings always lead to unsuitable product designs. How one correctly specifies the switch point of a float switch will be explained here. The basic prerequisite for the correct specification …

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Certification for fire-protection applications

11/18/2016 | Fabian Lotter | Applications
sign: Fire protection

The word certification is derived from joining together two Latin words, “certe” (meaning certain) and “facere” (to make). Certification describes the common practice with which the fulfilment and compliance with certain standards or requirements should be …

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What is meant by the “change-over” switching function with pressure switches?

08/16/2016 | Enrico Bossart | Know-how
Illustration: Change-over switching function

A pressure switch with the “change-over” switching function represents a special version of a pressure switch with two switching outputs acting oppositely to switch two circuits. A “change-over” closes one circuit and simultaneously opens a second circuit. Thus …

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What is meant by the “normally open” switching function with pressure switches?

05/24/2015 | Enrico Bossart | Know-how
Normally open switch function

Pressure switches (for example, a “normally open contact”), are often used for the monitoring and control of safety functions in order to signal any over or underpressure, and thus to prevent any damage to the machinery or the system. Switches with the “normally …

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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.

Most-read articles
  • Difference between gauge pressure and absolute pressure measurement
  • Pt100 in 2-, 3- or 4-wire connection?
  • Pt100, Pt1000 or NTC – which is the right sensor?
Accuracy Ex protection Hydrostatic Hydrostatic level measurement International Measuring principles Pressure Pressure gauge Pressure sensor Pressure switch Safety Standards/approvals/directives Subsidiary Temperature Thermometer
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