Emerson 4390 Data Sheet

Product Data Sheet

00813-0100-4393, Rev AB

Rosemount™ 4390 Series of Corrosion and
Erosion Wireless Transmitters

March 2021

Rosemount 4390 Series of Corrosion and Erosion Wireless Transmitters provide continuous, accurate, and
highly sensitive real-time corrosion and erosion monitoring data, enabling maximum performance through
process optimization and eliminate the need of costly walkdowns. The transmitter contributes to superior
corrosion and erosion management data by using top-range technology to provide improved data
processing, flexible data management solutions, and a friendly user interface.

The Rosemount 4390 Series of Corrosion and Erosion Wireless Transmitters have the following features:

■

Delivers best in class resolution and measurement sensitivity

■

Operates with Electrical Resistance (ER), Linear Polarization Resistance (LPR), Galvanic, Multiple-Element
Sand/Erosion, or Combined probes

■

Reads monitoring probes from most common vendors

■

Provides up to 20 meters of probe cable that offer flexible, convenient positioning for maintenance and
radio signals

■

Provides flexibility in data formats and data management

Rosemount 4390 Series Transmitters

March 2021

Operating principle

Rosemount 4390 Series of Corrosion and Erosion Wireless Transmitters is an Emerson™ wireless product and uses the same radio
and power modules as other Emerson wireless products. The corrosion and erosion transmitter communicates through standard
wireless Gateways. The gateways interface with existing host systems using industry standard protocols including OPC, Modbus
TCP/IP, and Modbus RTU.

®

A. AMS Suite
B. Plantweb™ Insight Inline Corrosion Application
C. Modbus/OPC

D. HART® data

Reliable wireless architecture

■

Standard IEEE 802.15.4 radios

■

2.4 GHz ISM band sliced into 15 radio-channels

■

Allows for time-synchronized channel hopping in order to avoid interference from other radios, Wi-Fi®, and EMC sources,
thereby increasing reliability

■

Delivers high reliability in challenging radio environments using Direct Sequence Spread Spectrum (DSSS) technology

High accuracy data monitoring

The transmitter can provide fast and reliable corrosion monitoring, identifying within 10 to 20 nanometers of metal loss, based on
frequent measurements when using an ER probe.

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March 2021

Rosemount 4390 Series Transmitters

System flexibility

■

The wireless transmitter allows up to a 20 meter cable between probe and transmitter
— The transmitter can be installed conveniently for battery replacement and other maintenance without a need for

scaffolding for access

— The transmitter should be installed where it is most beneficial for wireless signal routing, avoiding shadows where radio

communication would be difficult

■

Reads corrosion and erosion probes from most common manufacturers

Data Management

■

Data format (calculated metal loss data, corrosion and erosion rates, or probe raw data) is user selectable from the HART
terminal, or from the Emerson Asset Management System (AMS)

■

The corrosion wireless transmitter can be seamlessly integrated with Plantweb Insight Inline Corrosion Application and
Fieldwatch™ software suite

■

Calculated metal loss can be transmitted directly to and displayed in Emerson AMS system

■

Calculated metal loss can be transmitted to any historian or control system for data management

Other benefits

The integrated Emerson wireless product, can be combined with other Emerson wireless products in an integrated network, using
same gateway for data communication

Rosemount 4390 Series Transmitters 3

Rosemount 4390 Series Transmitters

Product specifications

Item Description

General For connection with intrusive corrosion and erosion probes

Connection Connected to a probe through a probe cable (maximum 65 ft (20 m))

Humidity limits 5 - 95% relative humidity

March 2021

Measurement
intervals

Communication WirelessHart® 2.4 GHz DSSS (Discrete Sequential Spread Spectrum)

Instrument
resolution

ER probe Actual accuracy 10-100 ppm of probe element thickness, depending on probe type and environmental

LPR probe Accuracy of 100 ppm for the resistance measured on the LPR port

Sand probe Actual accuracy 10-100 ppm of probe element thickness, depending on probe type and environmental

Operating pressure -40 °F (-40 °C) to 158 °F (70 °C)

Battery capacity To simulate the power module life span, refer to the calculator here:

Power module Black power module, type 701PBKKF; Replaceable, non-rechargeable; Intrinsically safe Lithium-Thionyl

Housing Painted aluminum, IP 66

Weight Painted aluminum: 5kg

Sand, Electrical Resistance (ER) and galvanic probes can be measured as fast as 1-minute intervals, while
Linear Polarization Resistance (LPR) probes can be measured as fast as 4-minute intervals

24 bit

conditions

conditions

Power Module Life Estimator.

Chloride power module pack with PBT/PC enclosure. 7.2 V

Certification

Europe

Telecommunications compliance

All wireless devices require certification to ensure they adhere to regulations regarding the use of the RF spectrum. Nearly every
country requires this type of product certification. Emerson is working with governmental agencies around the world to supply fully
compliant products and remove the risk of violating country directives or laws governing wireless device usage.

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