GWR Transmitters automate tank level measurements.

Press Release Summary:

Designed for harsh conditions, Rosemount® 3300 Series Guided Wave Radar (GWR) transmitters with Hart to Modbus Converter help companies increase labor safety as well as reduce operating costs and road maintenance. Modbus RTU, Modbus ASCII, and LevelMaster protocols, combined with ability to configure transmitter remotely over the Modbus communication wires using Hart, provide users in oil and gas industry with real-time level and interface measurement.

Original Press Release:

Emerson Adds New Modbus Functionality to its Rosemount® Guided Wave Radar Transmitter Family

3300 series adds Modbus ASCII and LevelMaster protocols to enable reduction of up to 60% in programming and maintenance-related costs

AUSTIN, TEXAS (March 2, 2009) -- Emerson Process Management has introduced a new version of its Rosemount® 3300 Series of Guided Wave Radar (GWR) transmitters with Hart to Modbus Converter; the new version includes Modbus ASCII and LevelMaster protocols in addition to the previously available Modbus RTU. The additional protocols, combined with the ability to configure the transmitter remotely over the Modbus communication wires using Hart, provide users in the oil and gas industry with real time level and interface measurement.

The new Modbus functionality of the 3300 Series GWR transmitters has been developed in response to customer demand, with initial trials showing a potential reduction of up to 60% in start-up, programming and on-site maintenance-related costs. For example, remote configuration of the GWR transmitter at grade level eliminates the need for personnel to climb the tank. The LevelMaster emulation enables the 3300 to imitate the ABB, Siemens and Kimray 'Tank' protocols and be functional on its systems, so the RTU setup can be completed in just minutes.

Rosemount 3300 series GWR transmitters are designed for the harsh conditions of the oil and gas industry with thousands already installed in oil, water and condensate tanks and separators all over the world. By automating tank level measurements companies can realize a number of benefits: increase labor safety (by eliminating the need to climb tanks); reduce operating costs (through downsizing the trucking fleet and/or minimizing miles driven); and reduce road maintenance. Reliable level devices prevent tank spills, saving clean-up costs and fines by the U.S. Department of Interior and the Environmental Protection Agency starting at $1,000 per barrel spilled.

About Emerson Process Management

Emerson Process Management (, an Emerson business, is a leader in helping businesses automate their production, processing and distribution in the chemical, oil and gas, refining, pulp and paper, power, water and wastewater treatment, metals and mining, food and beverage, pharmaceutical and other industries. The company combines superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Its brands include PlantWeb®, DeltaV(TM), Fisher®, Micro Motion®, Rosemount®, Daniel®, Ovation®, and AMS(TM) Suite.

About Emerson

Emerson (NYSE: EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to create innovative solutions for customers through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2008 were $24.8 billion. For more information, visit

Peta Glenister, Emerson Process Management
+44 (0) 1753 756649,

Jerry Moon, Emerson Process Management
1 (512) 832-3089,

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