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Mobile calibration service

A mobile calibration service saves time, and, with that, also money. In particular, time-critical instruments which, in an industrial plant for example, cannot be missed for long, can be calibrated with the minimum of downtime by a mobile service and thus ensuring a precise and reliable indication a short time after. The smooth operation is …

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Pressure switches with IP65 and IP67 ingress protection

An important specification for industrial measuring instruments generally, and pressure sensors in particular, may be the ingress protection. In this context, an assumed typographical error in our data sheets for the PSD-4, PSD-30, PSD-31 and PSA-31 electronic pressure switches has frequently been described to us. These data sheets declare that these instruments meet both IP65 …

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Auto Draft

The construction of a traditional current loop for the capture of pressure sensor signals has its pitfalls – especially when not only a signal must be transmitted to the PLC, but also a local indicator has to be integrated. Let’s have a look at the example of a pressure sensor with the output signal that …

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Bright future

Boarding House reportsFranciscan nun Sister Mary Stella is delighted that the children of the WIKA Boarding House under her care have “a bright future” ahead of them. Our company will now be financing this institution for a further five years.The young residents receive a “wide-ranging and ambitious education” and later are sent to a state …

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Bright future

Boarding House reportsFranciscan nun Sister Mary Stella is delighted that the children of the WIKA Boarding House under her care have “a bright future” ahead of them. Our company will now be financing this institution for a further five years.The young residents receive a “wide-ranging and ambitious education” and later are sent to a state …

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SIL pressure switch: Safety in tyre manufacturing

Numerous industrial processes have an inherently risky potential. Special pressure switches support the safety of individuals and the surroundings. Example: the vulcanisation of tyres for automobiles. To monitor this technique, leading manufacturers utilize the model MW switch from WIKA with SIL 2 rating.Why this type of pressure switch is necessary for safety in this application …

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Fields of application for pressure sensors 3 – Absolute pressure sensors: why is it necessary to use absolute pressure sensors or pressure transmitters

Electronic pressure sensors usually measure the change in pressure through the deformation of a diaphragm. If this diaphragm is exposed to the process pressure on one side and “vented” on the other side (and thus exposed to the ambient pressure), the deformation is reduced (because it is counterbalanced) by exactly this ambient pressure. Therefore, the …

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Play it safe with double block & bleed

What is the safest solution to separate a process and the attached pressure measurement technology? The HSG 253 standard should be put on this question, and it answers unequivocally: through an instrumentation valve with double block & bleed (DBB). This configuration for risk minimisation applies especially, but not only, to processes with critical media.An instrumentation …

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Float switch: What is it and how does it really work?

Float switches are simple, universally applicable and exceptionally reliable. It isn’t a coincidence that, today, float switches still represent probably the most commonly used principle for level monitoring. But so how exactly does a float switch actually work?Float switches, in a simple mechanical form, have been in use for the control of water flows in …

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