Product category:
Level Sensors and Leak Detectors
News Release from: Emerson Process Management - Rosemount Measurement | Subject: Rosemount 3300 and 5600
Edited by the Engineeringtalk Editorial
Team on 06 February 2003
Transmitters boost accuracy in level
measurement
Emerson Process Management has new digital radar technology transmitters that deliver next generation radar level measurement for liquid level, solids level and interface measurement.
Emerson Process Management has new digital radar technology transmitters that deliver next generation radar level measurement for liquid level, solids level and interface measurement The new product ranges bring digital signal processing and industrial interfaces like Hart and Foundation fieldbus to advanced radar technology
This article was originally published on Engineeringtalk on 30 May 2000 at 8.00am (UK)
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As well as improving reliability and echo detection range in difficult applications, the technology allows detection of both the top liquid surface level, and measurement of the lower interface level on tanks containing two immiscible liquids, such as fuel and water.
The family is introduced with two distinct product styles: the Rosemount 3300 guided wave radar level transmitter, the first ever two-wire level and interface radar transmitter; and the Rosemount 5600 radar level transmitter, which is a free radiating, noncontact level transmitter.
Quite simply the most sophisticated, loop powered radar transmitter today, the Rosemount 3300 allows simultaneous interface and level measurement in a process tank: it is a MultiVariable transmitter.
Using guided wave radar technology, a microwave radar pulse travels down through the tank, along a simple probe, and receives reflected signals from liquids or solid materials surrounding the probe.
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A portion of this pulse is reflected at any interface, when the probe is surrounded by materials of a different dielectric constant.
Probe designs are available as rigid or flexible conductors that can be cut to length on site.
These probes are suitable for use in long nozzles, with small fittings/flanges, or in narrow bridles on separators.
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The modular construction of the Rosemount 3300 allows the head electronics to be detached, freely rotated, or replaced without opening the tank.
Above all, the single, small diameter penetration for level and interface measurement makes a simple and inexpensive installation.
Advanced signal processing gives higher resolution and more reliable measurements in applications where other styles of transmitter fail.
With turbulent or agitated liquid surfaces, contoured or sloping solids surfaces, or with dusty or steam laden vapour spaces - these are the applications where the 3300 thrives.
Guided wave radar can also cope with probe coating and material build-up better than other contacting level technologies, using the echo characterisation available within the digital signal processing.
The Rosemount 3300 is a two-wire, loop powered transmitter, which can be retrofitted onto existing loop cabling, and used as a straight replacement of existing 4-20mA level transmitters, whether on a separator unit, an LPG/ammonia storage tank or a powder silo.
Being an intelligent MultiVariable transmitter, further benefits arise within PlantWeb digital plant architecture, using Hart or Foundation fieldbus communications, when both surface level and liquid/liquid interface level can be monitored simultaneously.
The Rosemount 3300 is AMS Aware, compatible with the requirements of modern digital plant control systems, and is available as intrinsically safe or explosion-proof, built to the industrial standards and capable of the performance you expect from Rosemount products.
The Rosemount 5600 Series is an intelligent noncontact radar level measurement transmitter for process applications, on liquids and slurries.
The unit is available with a variety of antennae for measurement up to 20m in a wide range of applications: operational measurement range depends on the liquid properties and the surface agitation.
Smart FMCW (frequency modulated continuous wave) echo-tracking features and advanced signal processing techniques combine to give the 5600 Series high reliability and accuracy, even in the toughest conditions.
The Rosemount 5600 uses a software module that incorporates all the experience accumulated in thousands of Saab-Rosemount radar installations around the world, to discriminate between false echo sources and true surface echoes.
This software can also use information provided by the operator about stirrers or other obstructions as a complement to the automatically collected data.
The Rosemount 5600 integrates with PlantWeb digital plant architecture, and can provide Hart or Foundation fieldbus digital communications protocols, or a standard analogue output.
For local monitoring, the unit has an integral display, and four software keypads for basic initial configuration: remote displays and as many as six externally mounted temperature sensors can be driven from the Rosemount 5600.
The transmitter head has two separate junction boxes, one for non-intrinsically safe power supplies, 24-240V AC/DC, and one for the analogue output circuits and digital interface, which can be intrinsically safe, active or passive.
The Rosemount 5600 brings the best in radar level gauging technology - accuracy, reliability, no liquid contact, no moving parts - with full industrial control interfacing.
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