Sapcon instruments offers level switch, sla series rf-admittance type with immuno-coat probe - active shield. This is used in chemical, detergents, cosmetics, fertilizer, food, sugar, cement, power industries for level limit detection of fine and coarse solids of low dielectric constant that have a tendency to stick, form coating and develop static charge. The 3-electrode technique with active shield and special immuno-coat circuitry ignores coating on the probe. Rf signal transmission between probe and evaluation unit via co-axial cable with drain wire and driven shield arrangement eliminates cable capacitance and drift [due to change of cable capacitance with temperature.] special 10 led dot display sensitivity indicator simplifies calibration and indicates material trend in vicinity of the point level. This is suitable for high operating temperatures up to 600°c, for switching off conveyors when vessel is full, in order to avoid overflow; and for indicating empty tank at appropriate time to avoid production stoppage.
