Guided Wave Tank Level IndicatorsShipboard Guided Wave TLI Models For dual interface fluid measurement applications VEGAFLEX 82N Guided Wave Radar TLI The VEGAFLEX 82N Guided Wave Radar (TDR) is a microwave sensor used for continuous liquid level and interface measurement. VEGAFLEX 81N Guided Wave Radar TLI The VEGAFLEX 81N Guided Wave Radar (TDR) is a microwave sensor used for continuous liquid level and interface measurement. Privacy Policy | Terms & Conditions