Float Switches are inexpensive and efficient liquid level detectors. They are simple to install, and designed for trouble free operation over a long life.
The LR08 is a plastic float switch using either a PVC or synthetic rubber 3 core cable.Actuation is via a roller ball and micro-switch arrangement within the switch thereby eliminating all heavy metals from this version.
Construction
The unit comprises three major components:
1. The float chamber houses the micro-switch arrangement, totally sealed within a polypropylene casing, with a single pole double throw action.
2. The three-cored cable, connected to the micro-switch assembly inside the float chamber, is sheathed in CPE (chlorinated polyethylene) synthetic rubber or PVC.This cable is supplied in three standard lengths, 5 metres, 10 metres and 20 metres ‡5% of the length quoted.
Mounting
Whilst no hard and fast rules apply to the mounting of these units, the lead should be supported in an enclosed vessel, and in an open vessel it is advantageous to clip
the lead to the side, especially fi excessive turbulence is experienced.
To obviate the effects of rapid switching conditions that would result ifs u c h turbulence is experienced, it is advantageous to use a maintaining circuit which both safeguards the micro-switch and cuts out any chatter in the starters of associated pumps etc.
