Float Switch
WIKA are leading manufacturers of high quality Float Switches. Fluid Controls supplies the complete range of WIKA Float Switches, ranging from magnetic to suspended float switches, which are suited for greater solids content.
Model FLS Magnetic Float Switch
A float with a permanent magnet moves reliably along with the liquid level on a guide tube. Within the guide tube is fitted a reed contact (inert gas contact), which is energised, through the non-magnetic walls of the float and guide tube, by the approach of the float magnet.
By using a magnet and reed contact the switching operation is non-contact, free from wear and needs no power supply. The contacts are potential-free. Magnetic float switches are also available with multiple switch points. The float switch is simple to mount and maintenance-free, so the costs of mounting, commissioning and operation are low.
Model HLS Magnetic Float Switch
In addition to the various applications for magnetic float switches for vertical installation (model FLS), the model HLS horizontal magnetic float switches likewise offer innumerable possibilities to monitor and/or switch levels in order to indicate minimum/maximum levels.
The float is attached to a supported, swivelling lever and moves with the level of the medium being measured. By means of a permanent magnet, fixed to the end of the lever, when a preset switch point is reached, a reed contact (inert gas contact) within the contact pipe is actuated.
The magnetic float switch is simple to mount and maintenance-free, so the costs of mounting, commissioning and operation are low.
Model SLS Suspended Float Switch
Suspended float switches are attached to a highly flexible cable hanging from above and contain a micro switch, which is potted and enclosed, shock and fracture-proof, in a double-chamber system. When the float body is immersed in a liquid, the float bulb tips and triggers the micro switch. With the MS1 model range, a stabilisation weight is built in, so that this switch is also suited for greater solids contents.
One suspended float switch is required for each switch point. The contact is designed as a change-over contact, so that it can be configured as a high alarm as well as a low alarm. Through the patented, centrically mounted micro switch, the suspended float switch can switch in any direction, and not dependent on the direction in which the switch tips.
