-20...110°C - -10...120°C

The SIKA VH0 flow switches are used for monitoring volume flows. Depending on conditions, the SIKA VH0 flow switch is available for various nominal widths and set-point ranges. The SIKA VH0 flow switch contains a paddle system to whose end a permanent magnet is attached. Above this magnet is a reed contact, located outside the flow of fluid. A second magnet creates the force necessary to reset the switch back to the no-flow position. When the flow being monitored pushes against the paddle system, the paddle swings away. This changes the position of the magnet in relation to the reed contact and thus activates the connection. As soon as the flow is interrupted, the paddle moves back to its starting position, thus activating the reed contact once again. The force necessary to push the magnet back is provided by the two magnets repelling each other. Using magnetic force instead of the usual leaf spring means that the switch is considerably more stable in the long term and much less sensitive to pressure peaks. Microswitch A microswitch used as a switching element allows a higher electrical switching capacity than a reed switch. The resetting force required by the paddle system is produced by a leaf spring.

The WIKA RLS-2000 float switch is a reliable and inexpensive float switch made of high-quality plastic. The WIKA RLS-2000 float switch is particularly suited for measuring the levels of aggressive and corrosive media, such as bases and acids. For cost-sensitive applications such as the monitoring of levels or overflow and dry-run protection, float switches are an ideal solution. The WIKA RLS-2000 float switch detects the level using a permanent magnet and frictionless reed contacts at up to 4 defined switch points, without contact and thus free from wear. Integration as a limit level switch is simple, convenient and fast, because no adaptation or calibration is required during installation. The robust design minimises service and maintenance costs.