Rosemount 3490 Product Data Sheet
Rosemount™ 3490 Series
4–20 mA + HART® Compatible Controller
Product Data Sheet
00813-0100-4841, Rev DC
January 2021
■
Field mounted controller with integral multi-function LCD display and keypad
■
Tough weatherproof wall mount enclosure for internal or external mounting
■
Accepts 4–20 mA and HART inputs
■
Compatible with HART 7 transmitters
■
Intrinsically safe power supply to a transmitter
■
Isolated 4–20 mA output
■
Five field adjustable alarm and control relays
■
Pre-programmed with tank shapes, flow algorithms, and pump control routines to simplify configuration
Rosemount 3490 Series January 2021
Overview of the Rosemount 3490 Series
The Rosemount 3490 Series of wall and panel mounting control units provide comprehensive control functionality for any 4–20 mA
or HART compatible transmitter. A back-lit display gives clear visual indication of the measured value and status of all inputs and
outputs.
Figure 1: Mounting Options
A. Wall mount, IP65 version
B. Wall mount, NEMA® 4X version
Panel mount version
C.
Features and benefits
■
Tough weatherproof wall mount enclosure for internal and external mounting.
■
Accepts 4–20 mA or HART inputs.
■
Compatible with HART 5, 6, and 7 transmitters.
■
Five voltage-free SPDT relays for alarm and control duties.
■
Supports two voltage-free contact closure inputs.
■
4–20 mA 12-bit isolated current output proportional to calculated value.
■
Bright local display of measured value and input/output status.
■
Programmed tank shapes, flow algorithms, and control routines simplify configuration. A 20-point strapping table facility is
provided for non-standard applications.
■
Real-time clock for energy saving routines, pump efficiency calculations, and date/time stamping of data logging.
■
The Rosemount 3490 Series is mounted in a non-hazardous area, and provides a protected (intrinsically safe) direct current
supply to a transmitter mounted in a hazardous area.
Contents
Overview of the Rosemount 3490 Series........................................................................................................................................... 2
Ordering information........................................................................................................................................................................ 4
Specifications.................................................................................................................................................................................... 7
Product certifications...................................................................................................................................................................... 12
Dimensional drawings..................................................................................................................................................................... 16
2 Emerson.com/Rosemount
3490
3491
Model type:
A
B
m
1
1. 572
2: 4 7
RL1
RL2
RL3
RL4
IN1
IN2
RL5
BA C
F
D E
1.572m
1.572m
12:47
1
MAIN MENU
Run?
MONITOR
SETUP
1
January 2021 Rosemount 3490 Series
Ideal for programming and control of Rosemount level and flow transmitters
Ideal for programming and control of Rosemount 3100 Series level and flow transmitters, and Rosemount 3300 Guided Wave
Radar level and interface transmitters (non-explosion-proof only).
Figure 2: Level or Volume Measurement with a Rosemount 3100 and 3490
A. Rosemount 3100 Series Level Transmitter
B. Rosemount 3490 Series Control Unit
Other HART transmitters can be connected. The Rosemount 3490 Series recognizes transmitters as “unknown instruments” but
allows access to programming of Universal and Common Practice HART commands.
Special features
■
Configured and interrogated using an integral six-button keypad.
■
Easy to navigate menu structure.
■
Wizard assisted programming, with password protection to prevent unauthorized access. Many popular configurations are
“Wizard assisted”, enabling fast and accurate programming. Typical applications include level, volume, distance measurement,
and open channel flow measurement.
■
The HART digital or 4–20 mA analog signal from the transmitter may be offset, dampened, scaled, and linearized. A range of
pre-programmed linearization algorithms are user-selectable.
■
The 4–20 mA output signal may be scaled to re-transmit all or just part of the transmitter’s input signal or calculated value.
■
Five relays are fully field programmable to perform a variety of control, fault indication, and alarm duties.
Two digital inputs can be individually set-up to perform various control actions (e.g. raise an alarm) whenever activated.
Figure 3: Typical Rosemount 3491 Display
A. Digital input status
B. Online status
C. Digital communication status
D.
E. Relay status
F. Bar graph of 4–20 mA output
Rosemount 3490 Series 3
Measured variable
3491 L 1 P4 I5
1
Rosemount 3490 Series January 2021
Ordering information
Online Product Configurator
Many products are configurable online using our Product Configurator. Select the Configure button or visit our website to start.
With this tool's built-in logic and continuous validation, you can configure your products more quickly and accurately.
Specifications and options
See the Specifications and options section for more details on each configuration. Specification and selection of product materials,
options, or components must be made by the purchaser of the equipment. See the Material selection section for more information.
Related information
Specifications
Material selection
Model codes
Model codes contain the details related to each product. Exact model codes will vary; an example of a typical model code is shown
in Figure 4.
Figure 4: Model Code Example
1. Required model components (choices available on most)
4 Emerson.com/Rosemount
January 2021 Rosemount 3490 Series
Rosemount 3491, 3492, and 3492 ordering information
Each Rosemount 3490 Series Control Unit has been designed for a specific purpose:
The Rosemount 3491 Standard Control Unit accepts input from one transmitter.
CONFIGURE > VIEW PRODUCT >
The Rosemount 3492 Differential Measurement Control Unit accepts input from two HART transmitters
and performs sum or differential calculations, providing a single current output proportional to the
answer.
CONFIGURE > VIEW PRODUCT >
The Rosemount 3493 Logging Measurement Control Unit provides on-board logging of the process/
primary value (PV), and totalized open channel flow.
CONFIGURE > VIEW PRODUCT >
Required model components
Model
Code Description
3491 Standard control unit
3492 Differential control unit
3493 Logging control unit
Signal output
Code Description
L 4–20 mA
Power supply
Code Description
1 115/230 Vac
2 24 Vdc
Enclosure/mounting
Code Description
P6 Wall mounting, IP65
P7 Panel mounting, IP40
P4 Wall mounting, NEMA® 4X
Rosemount 3490 Series 5
Rosemount 3490 Series January 2021
Product certificates
Code Description
I1 ATEX Intrinsically Safe
(1)
I5
(2)
I6
USA Intrinsically Safe
CSA Intrinsically Safe
I7 IECEx Intrinsically Safe
(1)
Enclosure/mounting codes P4 or P7 are required for this option.
(2)
Enclosure/mounting codes P4 or P7 are required for this option.
Accessory
Table 1: Accessory Ordering Information
Accessory
03490-7001-0001 IP65 hood kit for panel-mountable control unit (enclosure/mounting code P7)
Related information
Enclosure/mounting
6 Emerson.com/Rosemount
Loading...