RF Admittance Level sensor FRFI series adopts advanced RE admittance technology and overcomes the defects that the capacitor level sensor could not eliminate the effect by conductive hanging material. The instrument operates reliably and various technical indexes have archived the international level, which is widely used in control and alarm of liquid, pulp, powder, material level. It is not affected by water vapor, dust or the influence of condensation, with the long-term stable operation, high sensitivity, Good linearity, high temperature resistance, resistance to high pressure, etc.