The Rosemount 5300 Series utilizes time domain reflectometry (TDR) technology. The level is measured by low-power nano-second microwave pulses that are guided down the probe. When a radar pulse reaches media with a different dielectric constant, part of the energy is reflected back to the transmitter.
The time difference between the transmitted (reference) and the reflected pulse is converted into a distance value from which the level in the tank is calculated. Radar pulses are virtually unaffected by the tank content and tank atmosphere, temperature or pressure. That means trouble-free level measurement!

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