Vega VEGACAL 63 Operating Instructions Manual

Also see for VEGACAL 63: Safety manual User manual Operating instructions Supplementary instructions Specification sheet

Vega VEGACAL 63 Operating Instructions Manual Manual pdf 8 page image

l Article numberl Serial numberl Technical datal Article numbers, documentationWith the serial number, you can access the delivery data of theinstrument via www.vega.com, "VEGA Tools" and "serial numbersearch". In addition to the type label outside, you can also find theserial number on the inside of the instrument.3.2 Principle of operationVEGACAL 63 is a level sensor with fully insulated probe for continuouslevel measurement.The electronics functions according to the admittance principle(phase-selective admittance processing).It is designed for industrial use in all areas of process technology andcan be applied in all areas of industrial process measurement.Fully insulated probes such as VEGACAL 63 are preferably used inconductive liquids.Probe, measured product and vessel wall form an electrical capacitor.The capacitance is influenced by three main factors.123Fig. 2: Functional principle - Plate capacitor1 Distance between the electrode surfaces2 Size of the electrode surfaces3 Type of dielectric between the electrodesThe probe and the vessel wall are the capacitor plates. The measuredproduct and the insulation are the dielectric. Due to the higherdielectric constant (DK value) of the insulation and the conductiveproduct compared to air, the capacitance increases as the probe isgradually covered.The capacitance as well as the resistance change are converted bythe electronics module into a level-proportional signal.Application areaFunctional principle8 VEGACAL 63 • 4 … 20 mA/HART two-wire3 Product description30027-EN-090818