Spring-loaded float flow switch with reed contact for high pressures up to 250 bar

Compact float-type flow switch, intended above all for monitoring low liquid flows. Unlike conventional rotameters it does not use a tapered tube: an orifice float slides inside a cylindrical guide tube against a spring. This design allows the instrument to be mounted in any orientation and to withstand pressures up to 250 bar.

Features

• Measuring/switching range from 0.05…0.1 l/min to 13…24 l/min (water)
• G ½ female connections
• Available in brass, stainless steel or PVC
• Maximum pressure 250 bar, maximum temperature 100 °C
• Accuracy ±4 % of full scale
• Can be installed in any orientation
• Options: reed contact, pointer indicator

Operating principle

The flow pushes the orifice float against the spring force. A permanent magnet built into the float actuates a sealed reed contact mounted outside the tube, with no contact with the medium.