USL Level controls
are designed as standard units for lateral assembling. Three types of instruments are available that meet various use demands. USL MW type with microswitch contact and Spansil float are used for industrial applications, USL PM/FM type with Reed contact and body in polypropylene or PVDF for o.e.m. applications, USL ML with microswitch double contact and stainless steel float is suitable for temperatures up to 180 °C. The functioning principle is similar for all three types: the lifting of the float magnetically activates the electric contact housed outside the area interested by the liquid. The mechanic and electric parts are physically separated, there are therefore no retaining risks caused by ageing or defects of seals, stuffing box or else.