Two-Wire Radar Transmitter suits solids level measurement.

Press Release Summary:

By using Rosemount® Radar Master software and algorithms, Rosemount 5402 non-contacting radar level transmitter overcomes challenges — inclining or sloping surfaces, low dielectric properties, high filling rates — of bulk solids level measurement in vessels, bins, and silos. Features include Dual Port Technology, which ensures strong signal back to transmitter; advanced surface tracking; condensation-resistant antennas; and usability-optimized graphical interfaces with wizards.

Original Press Release:

Emerson Introduces 2-wire non-contacting Radar Transmitter for Demanding Solids Level Measurement Applications

Rosemount® 5402 uses advanced software algorithms to overcome specific challenges of measuring levels of solids in vessels, bins and silos

AUSTIN, TEXAS -- Emerson Process Management has released a version of its Rosemount 5400 series of non-contacting radar level transmitters aimed specifically at demanding bulk solids level measurement applications. The Rosemount 5402 high frequency 2-wire radar uses Rosemount Radar Master software and unique algorithms to overcome the specific challenges of solids level measurement in vessels, bins and silos, such as inclining or sloping surfaces, low dielectric properties and high filling rates.

Inclining or sloping surfaces deflect energy away from the radar and can generate several small reflections. The Rosemount 5402 overcomes this by a new signal processing algorithm that has been developed to address this specific challenge. For applications involving dry solids with low dielectric properties that create very low reflections and thereby can result in an unstable level measurement, sensitivity is increased, noise cancelled out and echo strength increased. The measurement difficulties caused by high filling rates are met by increased sensitivity and echo traceability.

2-wire technology enables fast and cost effective installation by taking advantage of existing cabling, while still providing the same high levels of data and diagnostics that would normally require 4-wire connections.

Innovations such as Dual Port Technology, which ensures a strong signal back to the transmitter, advanced surface tracking, and condensation-resistant antennas make the Rosemount 5402 extremely reliable, even in the most demanding applications.

User-friendly graphical interfaces with wizards and suggestions for application-specific configuration help users easily integrate the transmitter into new or existing control systems. This, in addition to reduced maintenance operation and advanced diagnostics, results in a quicker return on investment with overall improved uptime and enhanced safety.

The Rosemount 5402 offers connectivity to a range of communications protocols including HART®, FOUNDATION™ fieldbus, FISCO and Modbus. The device has ATEX, IECEx, FM, CSA, CRN, Inmetro, DIBt, GOST and NEPSI approvals.

The Rosemount 5402 non-contacting radars for solids are part of Emerson’s comprehensive range of level measurement devices for many applications across a range of industries. The non-contacting radars compliment Emerson’s existing Rosemount 5600 4-wire non-contacting radar for solids level measurement, the Rosemount 5300 Series guided wave radar for solids measurement in smaller vessels, and the recently launched Rosemount 5708 3D solids scanners, which are suitable for solids level and volume measurement applications in larger vessels and warehouses.

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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, mining and metals, food and beverage, life sciences and other industries. The company combines superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Its brands include PlantWeb™, Syncade™, DeltaV™, Fisher®, Bettis™, Micro Motion®, Rosemount®, Daniel™, Ovation™ and AMS Suite.

About Emerson

Emerson (NYSE:EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets around the world. The company is comprised of five business segments: Process Management, Industrial Automation, Network Power, Climate Technologies, and Commercial & Residential Solutions. Sales in fiscal 2013 were $24.7 billion.  For more information, visit


Peta Glenister

Emerson Process Management

+44 (0) 1753 756649

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