The KROHNE OPTIFLEX 8200 Level Transmitter is a 2-wire guided radar level transmitter based on the Time Domain Reflectometry (TDR) technology. It is designed for level and interface measurement under extreme conditions in the power, oil and gas industries. Using an algorithm called "Dynamic Gas-phase Compensation (DGC)", the device measures accurately and without increased blocking distance the level of products in processes where the composition of the gas above the product can change suddenly (e.g. in steam boilers).