Tech Tip: Slosh Shields

When measuring liquid levels in a tank or enclosure, the reed switch-based float switch is the most widely used. These float switches are reliable, economical, and they come in a wide variety of design configurations. Depending on the materials used, they can withstand high heat, high pressure, corrosive conditions, viscous liquids and turbulence.

Turbulence and debris are common environmental conditions in tanks that hold liquids. Think of a bilge tank in a naval vessel, or the hydraulic fluid tank in a train. Agitation caused by fluid mixing or just by filling the tank can cause turbulence. Turbulence and debris can interfere with or damage float switch operation, and even cause premature failure of both the switch and relay due to chattering (the rapid on/off of a switch).

A slosh shield stabilizes and protects the float switch from chattering or damage by using small holes in the top and bottom of the slosh shield to let air and water flow in and out. Available for vertical, horizontal (side-mounted) and multi-point float switches with full-size or miniature floats, these slosh shields are available in stainless steel, brass, polypropylene, PBT or Kynar.