Rosemount 3152 User manual

Reference Manual
00809-0100-4835 Rev BD
July 2016
Rosemount 3150 Series Nuclear Pressure
Transmitters including the Rosemount
3152, 3153 and 3154

Reference Manual
00809-0100-4835 Rev BD
July 2016
Rosemount 3150 Series
i
Rosemount 3150 Series Nuclear Pressure Transmitters
including the Rosemount 3152, 3153 and 3154
NOTICE
Read this manual before working with the product. For personal and system
safety, and for optimum performance, make sure you thoroughly understand the
contents of this manual before installing, using or maintaining this product.
For Assistance:
Within the United States, contact Rosemount Nuclear Instruments, Inc. at
1-952-949-5210.
Outside the United States, contact the nearest Rosemount representative.
Customer Feedback:
Your feedback is important to us, please send comments or suggestions to:
[e-mail]
Rosemount Nuclear Instruments, Inc. satisfies all obligations
coming from legislation to harmonize product requirements in
the European Union.

Rosemount 3150 Series
Reference Manual
00809-0100-4835 Rev BD
July 2016
ii
Rosemount Nuclear Instruments, Inc. Warranty and
Limitations of Remedy
The warranty and limitations of remedy applicable to this Rosemount equipment are as stated on the reverse
side of the current Rosemount quotation and customer acknowledgment forms.
RETURN OF MATERIAL
Authorization for return is required from Rosemount Nuclear Instruments, Inc. prior to shipment. Contact
Rosemount Nuclear Instruments, Inc. (1-952-949-5210) for details on obtaining Return Material Authorization
(RMA). Rosemount Nuclear Instruments will not accept any returned material without a Return
Material Authorization. Material returned without authorization is subject to return to customer.
Material returned for repair, whether in or out of warranty, should be shipped prepaid to:
Rosemount Nuclear Instruments, Inc.
8200 Market Boulevard
Chanhassen, MN 55317
USA
IMPORTANT
Rosemount 3152, 3153 and 3154 Series Pressure Transmitters are designed for Nuclear Class 1E usage, and
have been tested to the standards shown below:
•IEEE Std 323™-1974, -1983 and -2003
•IEEE Std 344™-1975, -1987 and -2004 •RCC-E-2002 •KTA 3505-2005
These transmitters are manufactured under a quality system that meets the requirements of 10CFR50
Appendix B, 10CFR Part 21, ISO 9001, NQA-1, KTA 1401, KTA 3507, CSA N285.0, CSA Z299 and the
applicable portions of IAEA-50-C-Q. During qualification testing, interfaces were defined between the
transmitter and its environment that are essential to meeting requirements of the qualification standards listed
above. Specifically, to ensure compliance with 10CFR Part 21, the transmitter must comply with the
requirements herein and in the applicable Rosemount qualification report(s) throughout its installation,
operation and maintenance. It is incumbent upon the user to ensure that the Rosemount Nuclear Instruments,
Inc.’s component traceability program is continued throughout the life of the transmitter.
In order to maintain the qualified status of the transmitter, the essential environmental interfaces must not be
compromised. Performance of any operations on the transmitter other than those specifically authorized in
this manual has the potential for compromising an essential environmental interface. Where the manual
uses the terms requirement, mandatory, must or required, the instructions so referenced must be
carefully followed. Rosemount Nuclear Instruments, Inc. expressly disclaims all responsibility and liability for
transmitters for which the foregoing has not been complied with by the user.

Reference Manual
00809-0100-4835 Rev BD
July 2016
Rosemount 3150 Series
iii
Revision Status
Changes from March 2015 (Rev BC) to July 2016 (Rev BD)
Page
(Rev BC) Page (Rev BD) Changes
Cover,
throughout
Cover,
throughout
Document revision change from March 2015 to July 2016, Rev BC to Rev BD
Throughout
Throughout
Updated references and terminology for consistency throughout document.
3-11 3-11
Minimum time constant for damping adjustment set to maximum position for
3153 and 3154 transmitters (output code T) changed from 0.8 sec to 1.2 sec.
5-11 & 5-13 5-11 & 5-14
Relocated step 2 in the Preliminary Electrical Housing Reassembly Section to
the Electronics Housing Cover Installation Section and revised for clarity.
5-12 5-12
Updated Electronics Assembly Installation procedure to include additional
instruction for installing the connector plug.
5-12 to 5-18 5-12 to 5-19
Added Figure 5-7 – Connector Plug Detail and updated subsequent figure and
page numbers accordingly.
NOTE
The above Revision Status list summarizes the changes made. Please refer to both manuals for complete
comparison details.

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Reference Manual
00809-0100-4835 Rev BD
July 2016
iv

Reference Manual
00809-0100-4835 Rev BD
July 2016
Rosemount 3150 Series
Table of Contents
SECTION 1
Introduction
Using this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . .1-1
SECTION 2
Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . .
Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Process Connections and Interfaces . . . . . . . . . . . . . . . . . . .
Impulse Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical – Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical – Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 2-1
. . .2-1
. . . 2-2
. . . 2-2
. . . 2-3
. . . 2-4
. . . 2-5
. . . 2-6
. . . 2-6
. . . 2-7
. . 2-10
. . 2-10
. . 2-14
. . 2-14
SECTION 3
Calibration
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Messages. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . .
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Span Adjustment Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Zero Adjustment Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration Procedures
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Span and Zero Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration Procedure for Zero Based Span (LRV is
Zero DP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration Procedure for Elevated or Suppressed
Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coarse Zero Select Jumper Position Selection
Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Damping Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Correction for High Static Line Pressure. . . .
. . . . . . . . . . . . .
High Static Pressure Span Effect on Range Codes
1, 2 and 3 DP Transmitters . . . . . . . . . . . . . . . . . . . .
High Static Pressure Span Correction for Range
Code 4 and 5 DP Transmitters. . . . . . . . . . . . . . . . . .
High Static Line Pressure Zero Correction for DP
Transmitters (All Ranges). . . . . . . . . . . . . . . . . . . . . .
Linearity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . .3-1
. . . 3-
1
. . . 3-2
. . . 3-2
. . . 3-3
. . . 3-5
. . . 3-5
. . .3-6
. . .3-6
. . .3-6
. . . 3-7
. . 3-10
. . 3-11
. . 3-12
. . 3-12
. . 3-12
. . 3-17
. . 3-17

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Reference Manual
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July 2016
TOC-2
SECTION 4
Operation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Sensor Cell. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Reg
ulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
Reverse Polarity Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 4-1
. . . 4-2
. . . 4-3
. . . 4-4
. . . 4-5
. . . 4-5
. . . 4-5
. . . 4-5
. . . 4-5
SECTION 5
Maintenance and
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Considerations. . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronics Assembly Checkout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor
Module Checkout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Process Flange Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Housing Disassembly . . . . . . . . . . . . . . . . . . . . . . .
Reassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Housing Reassembly . . . . . . . . . . . . . . . . . . . . . . .
Process Flange Reassembly . . . . . . . . . . . . . . . . . . . . . . . . .
Post Assembly Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 5-1
. . . 5-1
. . . 5-3
. . . 5-5
. . . 5-5
. . . 5-6
. . . 5-7
. . . 5-7
. . . 5-8
. .5-11
. . 5-11
. . 5-14
. . 5-16
SECTION 6
Transmitter Spare Parts
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
General Considerations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spare Parts Shelf Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impact on
Transmitter Qualified Life . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Spare Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 6-1
. . . 6-1
. . . 6-3
. . . 6-3
. . . 6-3
. . . 6-4

Reference Manual
00809-0100-4835 Rev BD
July 2016
Rosemount 3150 Series
SECTION 1: INTRODUCTION
Figure 1-1 – Standard Transmitter
Nameplate
USING THIS MANUAL
This manual is designed to assist in installing, operating and
maintaining the Rosemount 3150 Series Pressure Transmitters.
Instructions for the 3152, 3153 and 3154 models are included in this
manual. Where differences in instructions between the models occur
they shall be noted within those instructions. The manual is organized
into the following sections:
Section 2: Installation
Provides general, mechanical, and electrical installation
considerations.
Section 3: Calibration
Provides transmitter calibration procedures.
Section 4: Operation
Provides a description of how the transmitter operates.
Section 5: Maintenance and Troubleshooting
Provides basic hardware troubleshooting considerations including
disassembly and reassembly procedures and post assembly tests.
Section 6: Transmitter Spare Parts
Provides order information for transmitter spare parts.
NOTE
Refer to the applicable Rosemount Qualification/Test Reports, Product
Data Sheets and/or Specification Drawings for details on testing,
performance specifications and dimensional drawings for each model.
Figure 1-1 shows the standard transmitter nameplate and where
transmitter information is stamped onto the nameplate. Nameplate
material is stainless steel.
Unique Transmitter Serial Number
is stamped here
Transmitter Model Number is
stamped here
Factory Calibrated Span
is stamped here
Transmitter Maximum Power
Supply Limit is stamped here
Maximum Working
Pressure is stamped here

Rosemount 3150 Series
Reference Manual
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July 2016
1-2

Reference Manual
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July 2016
Rosemount 3150 Series
SECTION 2: INSTALLATION
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Considerations. . . . . . . . . . . . . . . . . . . . . . . .
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . .
page 2-1
page 2-1
page 2-2
page 2-2
page 2-7
page 2-10
SAFETY MESSAGES
Procedures and instructions in this section may require special
precautions to ensure the safety of the personnel performing the
operation. Refer to the following safety messages before performing
an operation preceded by this symbol .
Warnings
WARNING
Explosions can result in death or injury.
•Do not remove the transmitter covers in explosive
environments when the circuit is live.
•Verify that the operating atmosphere of the transmitter is
consistent with the appropriate qualification parameters.
OVERVIEW
This section contains the following installation considerations:
•General Considerations
•Mechanical Considerations
oProcess Connections
oImpulse Piping
oMounting Configurations
oConduit
oElectrical Housing
•Electrical Considerations
•Installation Procedures
oMechanical
oElectrical

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July 2016
2-2
WARNING
Electrical shock can result in death or serious injury.
•Avoid contact with the leads and terminals.
Process leaks could result in death or serious injury.
•Install and tighten all four flange bolts before applying
pressure.
•Do not attempt to loosen or remove flange bolts while the
transmitter is in service.
Replacement equipment or spare parts not approved by
Rosemount Nuclear Instruments, Inc. for use could reduce the
pressure retaining capabilities of the transmitter and may render
the instrument dangerous or adversely impact its qualified
status. •Use only components supplied with the Rosemount 3152,
3153 or 3154 transmitter or designated by Rosemount
Nuclear Instruments, Inc. as spare parts for the 3152,
3153 or 3154.
Improper assembly of mounting bracket to traditional process
flange can damage sensor module.
•For safe assembly of bracket to transmitter traditional
process flange, bolts must break back plane of flange
web (i.e. bolt hole), but must not contact module housing.
Use only the RNII approved bolts supplied with the
bracket.
GENERAL
CONSIDERATIONS
Measurement accuracy depends upon proper installation of the
transmitter and its associated impulse piping and valves. Mount the
transmitter close to the process and use a minimum of piping to
achieve best accuracy. For flow measurement, proper installation of
the primary element is also critical to accuracy. Also, consider the
need for easy access, personnel safety, practical field calibration and a
suitable transmitter environment. Transmitter installation should
minimize the effects of temperature gradients and fluctuations, and
avoid vibration and shock during normal operation.
MECHANICAL
CONSIDERATIONS
This section contains information you should consider when preparing
to mount the transmitter. Read this section carefully before
proceeding to the mechanical installation procedure. Proper
installation is mandatory to assure seismic qualification.
WARNING
Do not attempt to loosen or remove flange bolts while the transmitter
is in service.
NOTE
For steam service, do not blow down impulse piping through the
transmitter. Flush the lines with the transmitter isolated and refill the
lines with water before resuming measurement.

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July 2016
Rosemount 3150 Series
2-3
NOTE
When the transmitter is mounted on its side, position the traditional
process flanges to ensure proper venting or draining. Keep drain/vent
connections oriented on the bottom for gas service and on the top for
liquid service.
Mount the Rosemount 3150 Series transmitter to a rigid support (i.e.
one with a fundamental mechanical resonant frequency of 40 Hz or
greater). Two mounting options are qualified for the transmitter: panel
mount or 2-inch pipe mount. A stainless steel panel bracket is
provided with the 3154. For the 3152 and 3153 series, the user has
the option of specifying either the stamped carbon steel panel bracket
or the stainless steel panel bracket.
Refer to Figure 2-5 for qualified mounting configurations for both the
panel and pipe mount options.
Orientation with respect to gravity is not critical to qualification. For
maximum accuracy, zero the transmitter after installation to cancel any
zero shift that may occur due to liquid head effect caused by mounting
position.
NOTE
The transmitter is calibrated in an upright position at the factory.
Mounting the transmitter in another position may cause the zero point to
shift by an amount equivalent to the internal liquid head within the
sensor module induced by the varied mounting position. For maximum
accuracy, zero the transmitter to cancel this effect per Section 3:
Calibration.

Rosemount 3150 Series
Reference Manual
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July 2016
2-4
Process Connections and
Interfaces
Mount the process flanges with sufficient clearance for process
connections. For safety reasons, place the drain/vent valves so the
process fluid is directed away from possible human contact when the
vents are used. Also consider that access to the vent/drain valve(s)
and process connection(s) may be required for plant specific
operations (i.e. calibration, draining, etc.)
Process tubing must be installed to prevent any added mechanical
stress on the transmitter under seismic conditions. Use stress-relief
loops in the process tubing or separately support the process tubing
close to the transmitter.
Typical connections on the transmitter flanges are ¼ - 18 NPT or 3/8
inch Swagelok ™. Use your plant-approved, qualified thread sealant
when making threaded connections. The end-user is responsible for
the qualification of the threaded seal interface on all ¼ - 18 NPT
interfaces.
Transmitters with options including 3/8 inch Swagelok™ are shipped
with front ferrule, rear ferrule and nut. Place these fittings on the
tubing with the orientation and relative position shown in Figure 2-1.
Use process tubing with 3/8 inch outside diameter and of suitable
thickness for the pressure involved.

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Rosemount 3150 Series
2-5
Figure 2-1 – Swagelok™
Compression Fitting Detail
Impulse Piping
The Swagelok™ tube fittings come completely assembled and are
ready for immediate use.
Do not disassemble them before use
because dirt or foreign materials may get into the fitting and cause
le
aks. Insert the tubing into the Swagelok™ tube fitting, make sure the
tubing rests firmly on the shoulder of the fitting and the nut is finger
tight. Tighten the nut one
-and-one-quarter turns. Do not over-tighten.
To reconnect, insert the tubing with p
re-swaged ferrules into the fitting
until the front ferrule sits in the fitting. Tighten the nut by hand, then
rotate one
-quarter turn more or to the original one-and-one-quarter tight
position. Then snug it slightly with a wrench.
For more detailed i
nformation regarding the specifications and use of
Swagelok™ tube fittings, refer to:
Fittings Catalog MS-01-140
“Gaugeable Tube Fittings and Adapter Fittings”
www.swagelok.com
If drain/vent valves are opened to
bleed process lines, torque stems to
the value in Table 5
-2 in Section 5 Maintenance and Troubleshooting
when closing.
The piping between the process and the transmitter must accurately
transfer the pressure to obtain accurate measurements. There are fi
ve
possible sources of error: pressure transfer (such as obstruction), leaks,
friction loss (particularly if purging is used), trapped gas in a liquid line
or liquid in a gas line and density variations between the legs.
The best location for the transmit
ter in relation to the process pipe
depends on the process itself. Use the following guidelines to
determine transmitter location and placement of impulse piping:
•Keep impulse piping as short as possible
•For liquid service, slope the impulse piping at least 1 inch per
foot (8 cm per m) upward from the transmitter toward the
process connection
•For gas service, slope the impulse piping at least 1 inch per foot
(8 cm per m) downward from the transmitter toward the process
connection
•Avoid high points in liquid lines and low points in gas lines
•Make sure both impulse legs are the same temperature
Dimensions are nominal in inches (mm)

Rosemount 3150 Series
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2-6
Mounting Configurations
•Use impulse piping of large enough diameter to avoid friction
effects and blockage
•Vent all gas from liquid piping legs
•Vent all liquid from gas piping legs
•When using a sealing fluid, fill both piping legs to the same level
•When purging, make the purge connection close to the process
taps and purge through equal lengths of the same size pipe –
avoid purging through the transmitter
•Keep corrosive or hot process materia
l out of direct contact with
the transmitter
•Prevent sediment deposits in the impulse piping
•Keep the liquid balanced on both legs of the impulse piping
•Avoid conditions that might allow process fluid to freeze within
the process flange
•Make sure the impulse piping is of adequate strength to be
compatible with anticipated pressure.
Refer to Figure 2
-2 for examples of the following mounting
configurations:
Liquid Flow Measurement
•Place taps to the side of the line to prevent sediment deposits
on the process isolators.
•Mount the transmitter beside or below the taps so gases vent
into the process lines.
Gas Flow Measurement
•Place taps in the top or side of the line.
•Mount the transmitter beside or above the taps to drain liquid
into the process line.
Stea
m Flow Measurement
•Place taps to the side of the line.
•Mount the transmitter below the taps to ensure that impulse
piping will remain filled with condensate.
•Fill impulse lines with water to prevent steam from contacting
the transmitter directly and to ensure accurate measurement
start-up. Condensate chambers are not typically necessary
since the volumetric displacement of the transmitter is
negligible.
NOTE
The mounting configurations described above and depicted in Figure 2-
2 are based on general
industry “best practice” recommendations.
Where applicable, specific plant approved installation practices should
be used.
NOTE
In steam or other elevated temperature services, it is important that
temperatures at the process flanges not exceed 25
0oF (121oC). In
vacuum service, these limits are reduced to 220
o
F (104
o
C).

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Rosemount 3150 Series
2-7
Figure 2-2 Transmitter Installation
Examples (liquid, gas or steam)
Please note that transmitters depicted in Figure 2-2 are intended for reference only.
Conduit
Electrical Housing
The conduit connections to the transmitter are threaded. Options
available are ½ -14 ANPT, M20, PG 13.5 and G1/2. Two openings are
available on the 3152 and 3153 transmitter housings for convenient
installation. Close of
f the unused opening with a compatible thread type
stainless steel pipe plug. Use your plant-approved, qualified thread
sealant on the conduit connection threads.
IMPORTANT
For all 3152 and 3153 transmitters, install the conduit plug (provided
with
the transmitter) in the unused conduit opening per the torque
values outlined in
Section 5: Maintenance and Troubleshooting,
Table 5-2.
The 3154 has one conduit connection.
Use a qualified conduit seal at the conduit entry to prevent moisture
from accumulating in the terminal side of the housing during accident
conditions. Certain option codes provide a qualified connector with the
connector factory assembled to the transmitter. To prevent the conduit
from adding mechanical stress to the transmitter during seismic
disturbances, use flexible conduit or support the conduit near the
transmitter. Install the conduit seal in accordance with the
manufacturer’s instructions or use the procedure in this section.
The standard transmitter orientation is shown in dimensional drawings
found in this manual (see Figure 2-6). The electronics housing
cannot be rotated in the field. For more information, please contact
Rosemount Nuclear Instruments, Inc.

Rosemount 3150 Series
Reference Manual
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July 2016
2-8
ELECTRICAL
CONSIDERATIONS
This section contains information you should consider when preparing
to make electrical connections to the transmitter. Read this section
carefully before proceeding to the electrical installation procedure.
Rosemount 3150 Series transmitters provide a 4-20 mA signal when
connected to a suitable dc power source. Figure 2-3 illustrates a typical
signal loop consisting of a transmitter, power supply, and various
receivers (controller, indicator, computer).
Figure 2-3 – Typical transmitter
Wiring connection
The power supply must supply at least 12 volts to the transmitter
terminals at 20 mA signal, or the maximum output current required for
proper system operation. Any power supply ripple appears in the
output load. The power supply versus load limitation relationship is
shown in Figure 2-4. See qualification reports for additional details.
The loop load is the sum of the resistance of the signal leads and the
load resistance of the receivers.
Terminal Side (cover removed)
-
+
+
+
+
-
Power
Supply
-

Reference Manual
00809-0100-4835 Rev BD
July 2016
Rosemount 3150 Series
2-9
Figure 2-4 – Transmitter Supply
Voltage vs. Load
Figure 2-4a – IEEE Qualified and Design Regions
(applicable to 3152N, 3153N and 3154N models only)
Figure 2-4b – KTA Qualified and Design Regions
(applicable to 3152K and 3154K models only)
POWER SUPPLY (VDC)
2500
1500
2000
500
1000
12
20
25
30
35
40
45
50
48
13.5
15
38
55
IEEE
QUALIFIED
REGION
DESIGN
REGION
LOAD (OHMS)
53
2150
1725
60
43
0
2150
POWER SUPPLY (VDC)
2500
1500
500
12
1000
20
25
30
35
40
45
50
15
55
KTA
QUALIFIED
REGION
DESIGN
REGION
LOAD (OHMS)
53
60
43
0
1900
2000

Rosemount 3150 Series
Reference Manual
00809-0100-4835 Rev BD
July 2016
2-10
Figure 2-4c – RCC-E Qualified and Design Regions
(applicable to 3153K and 3154K models only)
Signal wiring need not be shielded, but twisted pairs yield the best
results. Shielded cable should be used for best results in electrically
noisy environments. Do not run signal wiring in conduit or open trays
with AC power wiring, or near heavy electrical equipment. Signal wiring
may be ungrounded (floating) or grounded at any one point
in the signal
loop.
For installations with EMC performance requirements, consult the
Rosemount Nuclear Instruments, Inc. EMC test reports for additional
details regarding recommended practices for electrical wiring per
various national and international codes and regulations.
The transmitter case may be grounded or ungrounded. Grounding
should be completed in accordance with national and local electrical
codes. Transmitter case can be grounded using either the internal or
external ground connection.
•Internal Ground Connection: The Internal Ground
Connection screw is inside the terminal side of the electronics
housing. The screw is identified by a ground symbol (
), and
is standard on all 3150 Series transmitters.
•External Ground Assembly: The External Ground location is
indicated by the ground symbol ( ) on the module. An
External Ground Assembly kit can be ordered as an option on
the 3150 Series transmitter. This kit can also be ordered as a
spare part. Please contact RNII for ordering information.
45
43
POWER SUPPLY (VDC)
2500
2000
1500
500
12
1000
20
25
30
35
40
50
15
55
RCC
QUALIFIED
REGION
DESIGN
REGION
LOAD (OHMS)
53
2150
2050
60
0
38
750