Processing Magazine

Free Space Radar Level Transmitters

March 6, 2014

Endress+Hauser FMR5X Radar Level TransmittersEndress+Hauser's Micropilot FMR5X series of free space radar level transmitters has software with multi-echo tracking algorithms and functions to suppress interference echoes, thus providing accuracy up to ±0.078 inch (2mm) for level measurement of liquids and bulk solids products.

The FMR5X can be used to measure level or volume with a built-in 32-point strapping table. The liquids can be measured in metal or plastic tanks, stilling wells, bypass chambers or other vessels up to 131 feet high with standard units or 197 feet with enhanced dynamics option. The instrument can also be used to detect minimum or maximum levels to prevent overfilling or empty tanks in addition to continuous monitoring of the level.

Like other Endress+Hauser “time of flight” instruments, the FMR5X measures the distance from the process connection to the product surface. However, the FMR5X is equipped with multi-echo tracking algorithms that ensure that interference echoes — for example, echoes from edges, weld seams, other instruments, baffles, agitators and heating coils—are not interpreted as level echoes. Multi-echo tracking uses self-learning algorithms that build short term and long term history to check the echoes for plausibility and increased reliablity.