Quick Start Guide
00825-0100-3581, Rev AB
April 2020
Rosemount™ 5081
Explosion-Proof, Single-Input Intelligent
Transmitter
Quick Start Guide April 2020
Essential instructions
Read this page before proceeding!
Emerson designs, manufactures, and tests its products to meet many national and international
standards. Because these instruments are sophisticated technical products, you must properly install,
use, and maintain them to ensure they continue to operate within their normal specifications. You
must adhere to the following instructions and integrate them into your safety program when
installing, using, and maintaining Emerson's Rosemount products. Failure to follow the proper
instructions may cause any one of the following situations to occur: loss of life, personal injury,
property damage, damage to this instrument, and warranty invalidation.
• Read all instructions prior to installing, operating, and servicing the product.
• If this Quick Start Guide is not the correct one, call 1-800-854-8257 or 949-757-8500 to request
the correct Quick Start Guide. Save this Quick Start Guide for future reference.
• If you do not understand any of the instructions, contact your Emerson representative for
clarification.
• Follow all warnings, cautions, and instructions marked on and supplied with the product.
• Inform and educate your personnel in the proper installation, operation, and maintenance of the
product.
• Install equipment as specified in the installation instructions of the appropriate Reference Manual
and per applicable local and national codes. Connect all products to the proper electrical and
pressure sources.
• To ensure proper performance, use qualified personnel to install, operate, update, program, and
maintain the product.
• When replacement parts are required, ensure that qualified people use replacement parts
specified by Emerson. Unauthorized parts and procedures can affect the product's performance,
place the safe operation of your process at risk, and VOID YOUR WARRANTY. Look-alike
substitutions may result in fire, electrical hazards, or improper operation.
• Ensure that all equipment doors are closed and protective covers are in place, except when
maintenance is being performed by qualified people, to prevent electrical shock and personal
injury.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end
users’ equipment. This could be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your
system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for
all systems used within the facility.
Notice
EMERSON (“SELLER”) SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS IN THIS MANUAL
OR OMISSIONS FROM THIS MANUAL. SELLER MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, WITH RESPECT TO THIS MANUAL AND, IN NO EVENT, SHALL SELLER BE LIABLE FOR ANY
SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT LIMITED TO, LOSS OF PRODUCTION,
LOSS OF PROFITS, ETC.
PRODUCT NAMES USED HEREIN ARE FOR MANUFACTURER OR SUPPLIER IDENTIFICATION ONLY AND
MAY BE TRADEMARKS/REGISTERED TRADEMARKS OF THESE COMPANIES.
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April 2020 Quick Start Guide
THE CONTENTS OF THIS PUBLICATION ARE PRESENTED FOR INFORMATIONAL PURPOSES ONLY, AND
WHILE EVERY EFFORT HAS BEEN MADE TO ENSURE THEIR ACCURACY, THEY ARE NOT TO BE
CONSTRUED AS WARRANTIES OR GUARANTEES, EXPRESSED OR IMPLIED, REGARDING THE PRODUCTS
OR SERVICES DESCRIBED HEREIN OR THEIR USE OR APPLICABILITY. WE RESERVE THE RIGHT TO
MODIFY OR IMPROVE THE DESIGNS OR SPECIFICATIONS OF SUCH PRODUCTS AT ANY TIME.
SELLER DOES NOT ASSUME RESPONSIBILITY FOR THE SELECTION, USE, OR MAINTENANCE OF ANY
PRODUCT. RESPONSIBILITY FOR PROPER SELECTION, USE, AND MAINTENANCE OF ANY SELLER
PRODUCT REMAINS SOLELY WITH THE PURCHASER AND END-USER.
Warranty
1. LIMITED WARRANTY: Subject to the limitations contained in Section 2 herein and except as
otherwise expressly provided herein, Emerson (“Seller”) warrants that the firmware will
execute the programming instructions provided by Seller and that the Goods manufactured
or Services provided by Seller will be free from defects in materials or workmanship under
normal use and care until the expiration of the applicable warranty period. Goods are
warranted for twelve (12) months from the date of initial installation or eighteen (18) months
from the date of shipment by Seller, whichever period expires first. Consumables and
Services are warranted for a period of 90 days from the date of shipment or completion of the
Services. Products purchased by Seller from a third party for resale to Buyer (“Resale
Products”) shall carry only the warranty extended by the original manufacturer. Buyer agrees
that Seller has no liability for Resale Products beyond making a reasonable commercial effort
to arrange for procurement and shipping of the Resale Products. If Buyer discovers any
warranty defects and notifies Seller thereof in writing during the applicable warranty period,
Seller shall, at its option, promptly correct any errors that are found by Seller in the firmware
or Services, or repair or replace F.O.B. point of manufacture that portion of the Goods or
firmware found by Seller to be defective, or refund the purchase price of the defective
portion of the Goods/Services. All replacements or repairs necessitated by inadequate
maintenance, normal wear and usage, unsuitable power sources, unsuitable environmental
conditions, accident, misuse, improper installation, modification, repair, storage or handling,
or any other cause not the fault of Seller are not covered by this limited warranty, and shall be
at Buyer's expense. Seller shall not be obligated to pay any costs or charges incurred by Buyer
or any other party except as may be agreed upon in writing in advance by an authorized Seller
representative. All costs of dismantling, reinstallation and freight, and the time and expenses
of Seller's personnel for site travel and diagnosis under this warranty clause shall be borne by
Buyer unless accepted in writing by Seller. Goods repaired and parts replaced during the
warranty period shall be in warranty for the remainder of the original warranty period or
ninety (90) days, whichever is longer. This limited warranty is the only warranty made by
Seller and can be amended only in a writing signed by an authorized representative of Seller.
Except as otherwise expressly provided in the Agreement, THERE ARE NO REPRESENTATIONS
OR WARRANTIES OF ANY KIND, EXPRESSED OR IMPLIED, AS TO MERCHANTABILITY, FITNESS
FOR PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO ANY OF THE GOODS
OR SERVICES. It is understood that corrosion or erosion of materials is not covered by our
guarantee.
2.
LIMITATION OF REMEDY AND LIABILITY: SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED
BY DELAY IN PERFORMANCE. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF
WARRANTY HEREUNDER SHALL BE LIMITED TO REPAIR, CORRECTION, REPLACEMENT, OR
REFUND OF PURCHASE PRICE UNDER THE LIMITED WARRANTY CLAUSE IN SECTION 1
HEREIN. IN NO EVENT, REGARDLESS OF THE FORM OF THE CLAIM OR CAUSE OF ACTION
(WHETHER BASED IN CONTRACT, INFRINGEMENT, NEGLIGENCE, STRICT LIABILITY, OTHER
TORT, OR OTHERWISE), SHALL SELLER'S LIABILITY TO BUYER AND/OR ITS CUSTOMERS
EXCEED THE PRICE TO BUYER OF THE SPECIFIC GOODS MANUFACTURED OR SERVICES
PROVIDED BY SELLER GIVING RISE TO THE CLAIM OR CAUSE OF ACTION. BUYER AGREES
THAT IN NO EVENT SHALL SELLER'S LIABILITY TO BUYER AND/OR ITS CUSTOMERS EXTEND TO
INCLUDE INCIDENTAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES. THE TERM
“CONSEQUENTIAL DAMAGES” SHALL INCLUDE, BUT NOT BE LIMITED TO, LOSS OF
ANTICIPATED PROFITS, LOSS OF USE, LOSS OF REVENUE, AND COST OF CAPITAL.
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Quick Start Guide April 2020
Contents
First steps.....................................................................................................................................5
Wire............................................................................................................................................. 7
Display and operate................................................................................................................... 11
Start-up......................................................................................................................................14
Rosemount 5081 - (A/P/C/T) product certifications....................................................................15
EU Declarations of Conformity................................................................................................... 19
China RoHS Table....................................................................................................................... 25
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April 2020 Quick Start Guide
1 First steps
1.1 Unpack and inspect
To unpack the instrument:
Procedure
1. Inspect the shipping container(s). If there is damage, contact the
shipper immediately for instructions.
2. If there is no apparent damage, unpack the container(s).
3. Ensure that all items shown on the packing list are present.
If items are missing, contact your local Customer Care representative
4. Save the shipping container and packaging.
They can be used to return the instrument to the factory in case of
damage.
1.2 Installation
1.2.1 Installation guidelines
1. The transmitter tolerates harsh environments. For best results, install
the transmitter in an area where temperature extremes, vibrations,
and electromagnetic and radio frequency interference are minimized
or absent.
2. To prevent unintentional exposure of the transmitter circuitry to the
plant environment, keep the security lock in place over the circuit
end cap. To remove the circuit end cap, loosen the lock nut until the
tab disengages from the cap end and then unscrew the cover.
3. The transmitter has two ¾-in. (19.1 mm) conduit openings, one on
each side of the housing. Run sensor cable through the left side
opening (as viewed from the wiring terminal end of the transmitter)
and run power wiring through the right side opening.
4. Use water tight cable glands to keep moisture out of the transmitter.
5. If using conduit, plug and seal the connections at the transmitter
housing to prevent moisture from getting inside the transmitter.
CAUTION
Equipment damage
Moisture accumulating in the transmitter housing can affect the
performance of the transmitter and may void the warranty.
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Quick Start Guide April 2020
6. If the transmitter is installed some distance from the sensor, a
remote junction box with preamplifier in the junction box or in the
sensor may be necessary. Consult the sensor Quick Start Guide for
maximum cable lengths.
1.2.2 Orient the display board
The display board can be rotated 90 degrees, clockwise or counterclockwise,
from the original position. To reposition the display:
Procedure
1. Loosen the cover lock nut until the tab disengages from the circuit
end cap. Unscrew the cap.
2. Remove the three bolts holding the circuit board stack.
3. Lift and rotate the display board 90 degrees, clockwise or
counterclockwise, into the desired position.
4. Position the display board on the stand offs. Replace and tighten the
bolts.
5. Replace the circuit end cap.
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April 2020 Quick Start Guide
2 Wire
2.1 Wiring overview
To find wiring diagrams for specific sensors, check the wiring sections of the
reference manuals for those particular sensors.
2.2 Power supply/current loop
2.2.1 Power supply overview
The tables below display the minimum and maximum voltages needed to
operate the transmitter.
Minimum supply voltage at the
transmitter terminals
Minimum power supply for load resister 250 Ohms
Maximum power supply voltage 42.0 Vdc
Maximum power supply voltage for
intrinsically safe installations
12.0 Vdc
30.0 Vdc
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Quick Start Guide April 2020
Figure 2-1: Power Supply Voltage for HART® or without HART
Communication Configurations
A. With HART communication
B. Without HART communication
Table 2-1: Values from Graph
Upper line Power supply voltage needed to provide
Lower line Power supply voltage needed to provide
Maximum current About 24 mA
Minimum load for digital
communications
Minimum power supply voltage to
supply the 12.0 Vdc lift off voltage at the
transmitter
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12 Vdc at the transmitter terminals for a
22 mA current
30 Vdc for a 22 mA current
250 Ohms
17.5 Vdc
April 2020 Quick Start Guide
2.2.2 Wire the transmitter with HART® or FOUNDATION™ Fieldbus
Procedure
1. Run the power/signal wiring through the opening nearest terminals
15 and 16.
2. Use shielded cable and ground the shield to the power supply.
3. To ground the transmitter, attach the shield to the grounding screw
on the inside of the transmitter case.
You can also use a third wire to connect the transmitter to earth
ground.
Note
For optimum electromagnetic interference/radio frequency
interference (EMI/RFI) immunity, shield the power supply/output
cable and enclose it in an earth grounded metal conduit. Do not run
power supply/signal wiring in the same conduit or cable tray with AC
power lines or with relay actuated signal cables. Keep power supply/
signal wiring at least 6 ft. (2 m) away from heavy electrical
equipment. An additional 0-1 mA current loop is available between
TB-14 and TB-15. A 1 mA current in this loop signifies a sensor fault.
See Figure 2-2 for wiring instructions.
Quick Start Guide 9
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