Rosemount™ 4390 Series of Corrosion
and Erosion Wireless Transmitters
Quick Start GuideApril 2021
NOTICE
Read this guide before working with the product. For personal and system safety, and for optimum
product performance, make sure to thoroughly understand the contents before installing, using, or
maintaining this product.
The United States has two toll-free assistance numbers and one international number:
National Response Center: 1 800 654 7768 (24 hours a day) Equipment service needs
International: 1 952 906 8888
Shipping considerations for wireless products: (Lithium battery: Black Power Module, model number
701PBKKF). The unit was shipped to you without the Black Power Module installed. Remove the Black
Power Module prior to shipping the unit. Each Black Power Module contains two “C” size primary
lithium batteries. Primary lithium batteries are regulated in transportation by the U. S. Department of
Transportation and are also covered by IATA (International Air Transport Association), ICAO
(International Civil Aviation Organization), and ARD (European Ground Transportation of Dangerous
Goods). It is the responsibility of the shipper to ensure compliance with these or any other local
requirements. Consult current regulations and requirements before shipping.
WARNING
Failure to follow these installation guidelines could result in death or serious injury. Explosions
could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the appropriate
local, national, and international standards, codes, and practices. Review the approvals section of this
manual for any restrictions associated with a safe installation.
CAUTION
The products described in this document are not designed for nuclear-qualified applications.
Using non-nuclear-qualified products in applications that require nuclear-qualified hardware or
products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact an Emerson™ sales representative.
Declaration of conformity.......................................................................................................... 50
Mapping of device variable index numbers.................................................................................52
2Emerson.com/Rosemount
April 2021Quick Start Guide
1Overview
This guide provides basic guidelines for the installation, configuration,
commissioning, operation and maintenance of the Rosemount 4390 Series
of Corrosion and Erosion Wireless Transmitters. This guide is also available
electronically at Emerson.com/Rosemount.
The Rosemount 4390 Wireless is a family of transmitters, used with intrusive
monitoring probes for corrosion and erosion monitoring applications.
The transmitters are divided in two base models:
1. The 4391 Corrosion Wireless Transmitter is designed to measure and
process electrical signals from an intrusive corrosion probe to
provide input on fluid corrosivity, given in metal loss and metal loss
over time, also known as corrosion rate.
2. The 4392 Erosion Wireless Transmitter is designed to measure and
process electrical signals from an intrusive sand/erosion probe to
provide input on fluid erosion in metal loss and metal loss over time.
The device can also be used with the Emerson’s unique multiple
elements combined intrusive probes to provide both corrosion and
erosion measurements.
The device uses WirelessHART® communication protocol, and is battery
powered. It contains printed circuit boards, including a radio module
molded into an electronics module that is housed within a metallic housing
suited with a dedicated junction box for probe connections.
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Figure 1-1: Rosemount 4390 Series of Corrosion and Erosion Wireless
Transmitters
A. Probe cable gland (optional)
B. Grounding lug
C. Electronics cover
D. 2.4 GHz external antenna
E. Mounting bracket kit
F. Power module extended cover
G. Junction box for probe connection
Related information
What's in the box?
Required tools and equipment for installation
1.1
4Emerson.com/Rosemount
What's in the box?
The device is delivered in a cardboard box containing:
• 1x Rosemount 4390 Series of Corrosion and Erosion Wireless Transmitter
• 1x mounting bracket kit
April 2021Quick Start Guide
• 1x paper copy of this guide
• 1x probe cable gland (when the gland option is selected on the device
model code.)
Note
The device is shipped without batteries. The Rosemount 4390 Wireless
Transmitter requires the Black Power Module model 701BKKF that must be
ordered as a separate item. For more information, refer to the
701P SmartPower™ website Emerson.com/SmartPower.
1.2Required tools and equipment for installation
This section lists the required tools and equipment for physical installation,
configuration, and commissioning of the Rosemount 4390 Wireless
Transmitter.
1.2.1Configuration and commissioning
The Rosemount 4390 Wireless Transmitter must be configured before
physical installation. Direct configuration can be performed using either a
Field Communicator or an AMS Device Manager.
• AMS Trex Device Communicator. For more information, see
Emerson.com/AMS-Trex .
• AMS Device Manager. For more information, see Emerson.com/AMS-
Device-Manager .
• HART Modem and Cable (when using AMS Device Manager)
1.2.2Physical installation
The tools listed below are required for mounting the device on the plant.
• Hex key 3 mm for opening the junction box lid and the cover's locking
screws
• Hex key 5 mm and 13 mm for assembling the mounting bracket
• Slotted screwdriver 3 mm, for probe wiring terminals
• Adjustable spanners (0-40 mm) for probe cable gland mounting
Note
The equipment and tools listed on this section are not included.
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Quick Start GuideApril 2021
2Wireless considerations
Related information
Conduit connection
2.1Power up sequence
The Rosemount 4390 Series of Corrosion and Erosion Wireless Transmitters
and all other wireless devices should be installed only after the Wireless
Gateway has been installed and is functioning properly. Wireless devices
should also be powered up in order of proximity from the gateway,
beginning with the closest. This results in a simpler and faster network
installation. Enable active advertising on the gateway to ensure new devices
join the network faster. For more information, see the Emerson Wireless
1410S Gateway.
2.2Antenna position
The antenna should be positioned vertically, either straight up or straight
down, and it should be approximately 3 ft (1 m) from any large structure,
building, or conductive surface to allow for clear communication to other
devices.
Figure 2-1: Antenna position
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April 2021Quick Start Guide
2.3Conduit connection
Upon installation, ensure that the extra conduit entry on the housing is
sealed with a conduit plug, and that the probe cable conduit entry on the
junction box has an installed conduit fitting or cable gland.
The device is delivered with a conduit plug for sealing the extra conduit entry
on the housing and can be delivered with an optional cable gland for
installation of the probe cable.
Figure 2-2: Conduit connection
A. Extra conduit entry (not used)
B. Probe cable conduit entry
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Quick Start GuideApril 2021
3Configuration and commissioning
This chapter contains information on configuration and verification that
must be performed prior to physical installation.
To start operation, the user is required to perform the setup of the
Rosemount 4390 Wireless Transmitter, which includes joining a Wireless
Network, selecting the probe type and alarm settings.
NOTICE
The Black Power Module needs to be installed into the Rosemount 4390
Wireless Transmitter during configuration and commissioning
For HART communication a Device Description (DD) file is required.
The latest DD file version is available at Rosemount 4390 Wireless
Transmitter website Emerson.com/4390.
WARNING
Electrical shock could cause death or serious injury. Use extreme caution
when contacting the leads and terminals.
Wait 5 minutes after installing the Black Power Module before any wire
connection. This time is required for the instrument electronics to be fully
charged. Setting up the device is only possible when the electronics are fully
charged.
Related information
Engineering units
Default factory configuration
HART terminal connections
Connection with AMS Trex Device Communicator
Connection with HART Modem and AMS Device Manager
Joining to a wireless network
Device identification
Configure sensor type and parameters
Configure update rate
Configure alerts
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April 2021Quick Start Guide
3.1Engineering units
The Rosemount 4390 Wireless Transmitter supports only engineering units
according to the International System of Units (SI).
The following engineering units are used during configuration and
commissioning:
Table 3-1: Supported engineering units
VariableUnit
Electrical resistancemΩ (milliohms)
Electrical currentmA (milliamperes)
VoltageV and mV (Volts and millivolts)
Length / thicknessµm (micrometers)
Battery lifedays
Probe life% (percentage)
Corrosion ratemm/year (millimeters per year)
Temperature°C (degrees Celsius)
3.2Default factory configuration
The Rosemount 4390 Wireless Transmitter is delivered with a default factory
configuration, that consist of default values for each parameter that may be
changed to match with the application intended for the device.
The default factory configuration values are presented in the table below:
Table 3-2: Default factory configuration
VariableUnit
Tag and long tagnone
Network ID1229
Join key44555354, 4e455457, 4f524b53, 524f434b
Update rateBurst messages 1, 2 and 3: 60 seconds
Probe type- 4391: ER corrosion probe
- 4392: 4 elements ER sand/erosion probe
Acquisition rate10 minutes
Input parametersElement Thickness 250 µm
AlertsSee Configure alerts.
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3.3HART terminal connections
To configure and commission the Rosemount 4390 Wireless Transmitter,
the user is required to connect wires from a Field Communicator or HART
modem to the dedicated COMM terminals located under the extended
cover.
A. COMM terminal connections
3.4Connection with AMS Trex Device Communicator
When using AMS Trex Device Communicator, follow the steps below:
Procedure
1. Connect the two clip connectors from the AMS Trex Device
Communicator kit to the Rosemount 4390 Wireless COMM
Terminals. The COMM terminal connections are not polarity
sensitive.
2. Use the AMS Trex port HART to connect the wires. Do not use AMS
Trex to power the Rosemount 4390 Wireless Transmitter.
3. Make sure the latest DD files are installed in the AMS Trex Device
Communicator.
4. Power-up the AMS Trex Device Communicator.
5. Start configuring the device following the steps beginning from
Joining to a wireless network of this guide. Any configuration
changes must be sent to the transmitter by using the Send key. Refer
to Figure 3-1.
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April 2021Quick Start Guide
Figure 3-1: Connection with AMS Trex Device Communicator
A. Rosemount 4390 Wireless
B. Lead and clip connector kit
C. AMS Trex Device Communicator
WARNING
Providing power to a WirelessHART device from AMS Trex can
damage the device.
Do not use the AMS Trex unit to power the Rosemount 4390 Wireless
Transmitter.
3.5Connection with HART Modem and AMS Device Manager
When using a HART Modem and a PC with AMS Device Manager installed,
follow the steps below
Procedure
1. Connect the two clip connectors from the HART Modem to the
Rosemount 4390 Wireless COMM Terminals. The COMM terminal
connections are not polarity sensitive.
2. Make sure all necessary drivers for the HART Modem are installed and
updated.
3. Make sure the latest DD files are installed in the AMS Device
Manager.
4. Start AMS Device Manager.
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5. Double click on the Device icon under the HART Modem tab, then
select the Configure/Setup tab. Use the Direct Connection menu.
6. Start configuring the device following the steps beginning from
Joining to a wireless network of this guide.
AMS Device Manager configuration changes are implemented when
the Apply button is selected.
Figure 3-2: Connection with HART Modem and AMS Device
Manager
A. Rosemount 4390 Wireless Transmitter
B. HART Modem with lead and clip connector kit
C. Computer with AMS Device Manager installed
3.6
12Emerson.com/Rosemount
Joining to a wireless network
To communicate with the Wireless Gateway, and ultimately the host
system, the transmitter must be configured to communicate over the
wireless network. This step is the wireless equivalent of connecting wires
from a transmitter to the host system.
Procedure
Using the AMS Trex or AMS Device Manager, enter the Network ID and Join
Key so they match with the Network ID and Join Key of the Gateway and the
other devices in the network.
Note
If the Network ID and Join Key are not identical, the transmitter will not
communicate with the network. The Network ID and Join Key can be
obtained from the Gateway on the System Settings→Network→NetworkSettings page of the Wireless Gateway web-based user interface.
April 2021Quick Start Guide
Figure 3-3: Joining a Wireless Network
A. Network ID
B. Join Key
3.7
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Device identification
The user must configure the basic identification parameters for the device
being commissioned.
The Rosemount 4390 Wireless Transmitter supports both Tag (8 characters)
and Long Tag (32 characters), that can be set in the Device Information tab.
The user can also view non-configurable identification information such as
Device ID, Distributor, and Model. Refer to Figure 3-4.
The Rosemount 4390 Wireless Transmitter supports different types of inline
monitoring probes depending on the model selected.
During configuration, the user is required to setup the probe parameters
such as probe type, element thickness or exposed surface area (depending
on the probe type), metal loss offset (when applicable) and the acquisition
rate. To configure the sensor, follow the steps below:
Procedure
1. Select the Probe Type compatible with the transmitter model being
configured.
Table 3-3: Supported probe types
Transmitter modelSupported probe types
4391 Corrosion Wireless Transmitter • Single element ER probe
• Double or triple electrode LPR
probe
• Galvanic probe
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April 2021Quick Start Guide
Table 3-3: Supported probe types (continued)
Transmitter modelSupported probe types
4392 Erosion Wireless Transmitter• Multiple element ER sand
erosion probe
• Multiple element ER combined
probe
2. Set the Acquisition Rate. The acquisition rate is the time interval
between each sensor data point measurement and can be selected
from 1 minute up to 24 hours.
3. Add the Input Parameters for the probe you are using. The probe
parameters depend on the probe type:
• For ER probes, the parameters are Element Thickness and Metal
Loss Offset
• For LPR probes, the parameters are Working Electrode Area,
A. Probe type selection list
B. Acquisition rate configuration field
C. Input parameters configuration field
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3.9Configure update rate
The Update Rate is the frequency at which a set of data is transmitted over
the wireless network.
The user can select the Update Rate from a range of one second to 60
minutes.
By default, the update rate is set to 1 minute. This rate can be changed at
any time through either the AMS Device Manager, the Wireless Gateway
web-based user interface, or the AMS Trex Device Communicator.
3.9.1Burst messages
The Rosemount 4390 Wireless Transmitter has 3 configurable burst
messages. Each burst message has its own independent update rate and can
contain up to 8 device variables, depending on the HART command
configured by the user during the Update rate configuration process.
Depending on the number of variables to transmit, all 3 burst messages
might not be needed. Emerson recommends that you disable unused
messages.
Note
The Burst messages have a default update rate set to 60 seconds (1 minute).
It is recommended to change the update rate after the first successful
connection to a wireless network to save battery power. The update rates
should be identical to the acquisition rate. Set the update rates to 60
minutes, if the acquisition rate is above 60 minutes.
3.10
16Emerson.com/Rosemount
Configure alerts
The Rosemount 4390 Wireless Transmitter has factory defined alerts and
supports user configurable alerts. Device specific status bytes are used to
identify the device specific alerts.
The alerts are classified as either Maintenance, Advisory, or Failure alerts and
are listed in the tables below:
1. Maintenance alerts: Table 3-4
2. Advisory alerts: Table 3-5
3. Failure alerts: Table 3-6
Table 3-4: Maintenance alerts
Alert messageDevice status
(Byte :: Bit)
Probe life reached 0%0 :: 1The probe has reached end of life
Description
and needs to be replaced.
April 2021Quick Start Guide
Note
The alert "Probe life" is available only for ER probes.
Table 3-5: Advisory alerts
Advisory alertsDevice status
(Byte :: Bit)
Measurement disabled0 :: 6Measurements are disabled.
Instrument board
always ON
User alerts 1 to 81 :: 0 to 7User configurable alerts
Configuration items
updated
Device variable
simulation active
Power supply
conditions out of range
Environmental conditions
out of range
Device configuration
locked
Event notification
overflow
Capacity denied12 :: 0The device was unable to acquire
Bandwidth allocation
pending
0 :: 7The instrument board is set to
3 :: 0The configuration items were
8 :: 0One or more of the device variables
8 :: 4The supply voltage is out of the
8 :: 5Device temperature is above or
8 :: 7The device is in write protect mode.
9 :: 2Event queue overflow resulting in
12 :: 2The device has asked for bandwidth
Description
ignore power saving. The setting is
only intended for software updates.
updated as a result of a software
update, probe type change, or a
reset to factory defaults
are being forced to a simulated
value and status.
specified range.
below the operational limit.
event not being recorded
the communication bandwidth
required to support the Burst
Messaging specified.
from the Network Manager, and is
awaiting Network Manager
response.
Table 3-6: Failure alerts
Alert messageDevice status
(Byte :: Bit)
Probe malfunction0 :: 0Due to an internal error, a
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Description
measurement was not performed
correctly.
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