New magnetic switch series introduced

Each type of industry has its own particular features. Whether in petro chemicals, general mechanical engineering or shipbuilding, the specifications vary in terms of physical properties, preferred materials all the way to cable standards.

This is also true in liquid level measurement. And in this case, the magnetic level indication – visual level indicator (VLI) – demands have to be met. By adding electrical accessories such as magnetic switches or/and level transmitters, a VLI can be upgraded to become a reliable system. These can be used as actuators for pump and valve actions as well as analysing points within an SPS or computer system. Apart from the choice of materials and adherence to standards, the electrical connection is also an important factor.

Integrated cables of 3m, 5m, 10m and 20m length are usually long enough to connect easily to a junction box or a circuit branch. However it is difficult to find a cable suitable for all requested requirements. Halogen-free or chemical resistance are just a few of the demands. Also important are the temperature range and type of shielding. To create a universal interface allowing the customer to use their own cables, Weka has launched a new magnetic switch series using M12 plug-connectors. The M12 thread is in accordance with the IEC 61076-2-101 standard and is readily available worldwide.

The main advantage is that a mating plug (either straight or angled) can be purchased as well and be mounted on to the customer’s cable; or else a cable with already injection-moulded mating plugs can be used.

The magnetic switch with M12 plug-connectors is also lower in price than its cable-using counterparts. The switches are easy to install and can also easily be swapped in case of replacement. Finally, they offer all the well-known advantages, such as change-over technology, high loading capacity and an extremely robust stainless steel casing. Each VLI can be upgraded with any kind of magnetic switch even if the level indicator has been in use for decades.

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Design drawings

Design drawings

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