Schmalz

Vacuum Switches

Vacuum switches are available in mechanical and electronic types. In the mechanical versions, the existing vacuum is measured by using a membrane and a microswitch (electromechanical design), or a valve (pneumatic design) is activated. In the electronic version, the vacuum is measured by a piezoresistive sensor and a switching signal (analog or digital) is activated. Vacuum switches are used in the measuring range from -1 to 0 bar.

There are the following types of vacuum switches

Mechanical vacuum switches VS-V-PM and VS-V-EM-ST

Mechanical vacuum switches are characterized by their sturdy design and their universal operating principle. You can use the electromechanical design (EM) to switch DC or AC. The pneumatic design (PM), on the other hand, does not require electrical connections. It works purely with pneumatics. You can set the switching points (with fixed hysteresis) to adapt these switches individually to the process parameters.

Electronic vacuum switches

Electronic vacuum switches have a high switching accuracy and repeatability with a very compact design. Vacuum switches with digital display (VS-V-D-… and VS-V-W-D-… version) offer a high level of convenience, because the switching points and hysteresis are fully programmable using a foil keypad. To program the switching point in a process rather quickly and simply, use vacuum switches with teach button (VS-V-AH/AV-T version). You can program the switching points with this version using a key in a matter of seconds. Vacuum switches with analog and digital output (VS-V and VS-V-A-… versions) and vacuum switches in miniature form (VS-V-SA/SD) round off the program.

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