79018538
Oct 18, 2005
Mar 18, 2008
Electrical switches, in particular magnetic switches which can be operated without contact, inductively and capacitively operable switches; electrical switches designed as float switches, as operation monitors, as indicators for the presence of metals; electrical switching devices for monitoring liquid levels on the basis of the electrical conductivity of the relevant liquid; electrical and electronic controllers for [ rotational speed measurement, rotational speed regulation, monitoring that a machine is at rest, rotation direction monitoring, ] filling level indication, limit value monitoring, phase-gating control, machine control and for machine monitoring; electrical and electronic controllers as a phase failure relays and as timing relays
Electrical and Scientific Apparatus