A matter of ‘Echonomics’
10 Jun 2005
The Rosemount 5400 radar transmitter from Emerson Process Management is claimed to be the first of its kind to be able to handle three different types of complex signal processing.
These are echosensitivity, the ability to detect weak radar echoes reliably; echodynamics, the ability to handle weak and strong radar echoes simultaneously; and echologics, the ability to ignore false echoes.
Emerson has named the triple capability ‘Radar Echonomics’. This gives the transmitter a more accurate surface tracking ability than other available transmitters, says project manager Carl Fjelkner.
All 2-wire radar gauges give the benefits of having no moving parts and no contact with the liquid being measured, but according to Emerson, Radar Echonomics can increase productivity and availability and reduce cost of ownership. Engineering and installation expenditures, and operating and maintenance expenditures are reduced, the company claims.
The Rosemount 5400 Series is available in two models to increase application range: the Rosemount 5401, with a low frequency transmitter, is used in applications with turbulence, heavy vapours or foam, or where there is a risk of deposits on the antenna.
The Rosemount 5402, with a high frequency transmitter, uses a narrower radar beam for installations that have tall or narrow nozzles, for applications where the nozzle is close to the tank wall, or to avoid reflections from other objects in the tank.
