Emerson Rosemount 1154DH, Rosemount 1154HH, Rosemount 1154SH Reference Manual

Reference Manual

Product Discontinued

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Alphaline® Nuclear Pressure Transmitter

www.emersonprocess.com/rosemount/nuclear

IMPORTANT NOTICE – ERRATA

Affected

Pages

Effect.

Date

1

6-6

Process Flagel – CF3M (Cast version of 316L SST)

optional)

10/21/09

2

3-6

Change the first paragraph on the page to read as follows:

1154DH, 1154HH, and 1154SH) for the applicable part numbers.”

4/13/12

3

6-1

Steam Pressure/Temperature specification is updated as follows:

specification is ±2% of upper range limit.

4/13/12

4

6-8

Table 6-2, “Parts List Rosemount 1154DH, 1154HH, and 1154SH”, is updated as

In all locations, replaced “01154-0001-000 6” wit h “01154-0153-0002”

4/13/12

5

6-11

Table 6-2, “Parts List Rosemount 1154DH, 1154HH, and 1154SH”, in all locations the

“01154-0153-0002” is replaced by “01154-0263-0002”

6/9/17

Model 1153 Series H Product Manual 00809-0100-4631 Rev BA (April 2007)

No.

Description of Change

Drain/Vent Valves – 316L SST
Process Connections – 3/8-inch Swagelok compression fitting, 316L SST (1/4-18 NPT

“Damping electronics are available as an option. Transmitters with standard electronics
can be retrofitted with the adjustable damping feature by changing out both the amplifier
board and the calibration board. Please reference Table 6-2 (Parts List Rosemount

Steam Pressure/Temperature
Accuracy as specified below, during and after sequential exposure to steam at the

following temperatures and pressures, concurrent with chemical spray for the first 24
hours.

420 °F (215.6 °C), 85 psig for 3 minutes
350 °F (176.6 °C), 85 psig for 7 minutes
320 °F (160 °C), 75 psig for 8 hours
265 °F (129.4 °C), 24 psig for 56 hours

Range codes 4-8: Accur ac y within ±(1.0% of upper range limit + 1.0% of span)

(1)

Range code 9: Accur acy within ±(2.0% of upper range limit + 0.5% of span)

Note
(1) For Range codes 4-8, if pressure applied at the 4mA point is greater than 50% of the upper range limit, the

follows:
Amplifier Circuit Board, Output Code R:

In all locations, replaced “01154-0001-000 5” with “01154-0153-0001”
Amplifier Circuit Board with Damping, Output Code R:

In all locations, replaced “01154-0021-000 4” with “01154-0156-0001”
Amplifier Circuit Board, Output Code R, N0026:

following part numbers are updated:
Amplifier Circuit Board, Output Code R:

“01154-0153-0001” is replaced by “01154-0263-0001”
Amplifier Circuit Board with Damping, Output Code R:

“01154-0156-0001” is replaced by “01154-0266-0001”
Amplifier Circuit Board, Output Code R, N0026:

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Rosemount 1154 Series H
Alphaline

®

Pressure

Transmitters

NOTICE

Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure you thoroughly understand the contents before
installing, using, or maintaining this product.

For equipment service needs outside the United States, contact the nearest Rosemount
representative.

Within the United States, the North American Response Center is at your service 24 hours a
day, and is a single-point contact for all Rosemount equipment service needs. If at any time
you are not sure what to do, you have a question about using the product, or you have a
service or support request, call the center toll free at 1-800-654-RSMT (7768). This contact
is your fastest link to quick and complete answers about any Rosemount group, product, or
service.

Alphaline, Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc.
-Cell is a trademark of Rosemount Inc.
D.C. 55 is a registered trademarks of Dow Corning.
Loctite is a registered trademark of Henkel KGaA Corporation.
Grafoil is a trademark of Union Carbide Corp.
Swagelok is a registered trademark of Crawford Fitting Company.
Lubri-Bond is a registered trademark of E/M Corporation.

Cover Photo: 1153-001AB

Rosemount Nuclear Instruments, Inc. satisfies all obligations coming
from legislation to harmonize product requirements in the European
Union.

www.emersonprocess.com/rosemount/nuclear

Reference Manual

00809-0100-4631, Rev BA

Rosemount 1154 Series H

April 2007

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 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 Returned 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 Blvd.
Chanhassen, MN 55317
USA

IMPORTANT

The Rosemount 1154 Series H Pressure Transmitter is designed for Nuclear Class IE usage, has been tested per IEEE Std 323-1974,
IEEE 344-1975 as defined in the Rosemount Report D8700096 and is manufactured to the requirements of NQA-1; 10CFR50, Appendix
B quality assurance programs; and 10CFR Part 21. During qualification testing, interfaces were defined between the transmitter and its
environment that are essential to meeting IEEE Std 323-1974 requirements. To ensure compliance with 10CFR Part 21, the transmitter
must comply with the requirements herein and in Report D8700096 throughout its installation, operation, and maintenance. It is incumbent
upon the user to ensure that the Rosemount Nuclear Instruments, Inc. component traceability program where applicable is continued
throughout the qualified 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 requirements, 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.

www.emersonprocess.com/rosemount/nuclear

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Revisions

Changes From June 1999 to April 2007

Page (Old) Page (New) Changes

Cover Cover Document revision date change from June 1999 to April 2007, rev. from AA to BA.

Inside cover

i, ii, 5-7 and
back cover

3-6, and 6-8 3-6, and 6-8 Include errata sheet information on circuit board number changes:

Throughout Throughout References to Fisher-Rosemount were changed to Emerson Process Management.

i, back

cover

-- Cover, i,

2-1, 3-1,

4-1, 5-1, 6-1

2-2, 6-7 2-2, 6-7 Removed word “process” from sentence indicating user assumes responsibility for qualifying the connection

2-2 2-3 Updated reference to Swagelok catalog and added web address, removed street address.
2-4 2-4 Removed reference to Model 353C.
2-4 2-5 Rearranged wording on shielded cable.

2-6 and 2-7 2-7 and 2-8 Added word ‘nominal’ to Notes in drawings. Changed significant digits to conform to standard.

2-7 2-8 Changed height from 9.0 max (229) to 9.3 max (236). Changed shroud width from 3.40 (86.4) to 3.48 (88.3).
6-1 6-1 Changed ISO 9001 to ISO 9001:2000.

-- Back cover Added trademark and registration information.

ii, 5-7 and

back cover

Cover, i, ii

and back

cover

and back

page

2-1, 3-1,

4-1, 5-1, 6-1

Include errata sheet information on address and phone number.

Replaced amplifier circuit board, output code R P/N 01154-0001-0001 with 01154-0001-0005.
Replaced amplifier circuit board with damping, output code R P/N 01154-0021-0002 with 01154-0021-0004.
Replaced amplifier circuit board for N0026, output code R P/N 01154-0001-0002 with 01154-0001-0006.

Web address changed from www.rosemount.com to www.emersonprocess.com/rosemount/nuclear.

Added reference to European Union product requirement (CE).

Added table of contents to each section.

interface.

NOTE

The above Revision Status list summarizes the changes made. Please refer to both manuals for complete
comparison details.

www.emersonprocess.com/rosemount/nuclear

Rosemount 1154 Series H

Reference Manual

00809-0100-4631, Rev BA

April 2007

1-2

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Table of Contents

SECTION 1 Introduction

SECTION 2 Installation

SECTION 3 Calibration

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

About the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Mechanical Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Process Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Conduit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Span Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Zero Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Zero and Span Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Linearity Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Damping Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Correction For High Line Pressure

(Rosemount 1154DH and 1154HH only). . . . . . . . . . . . . . . . . . . . 3-6

Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

SECTION 4 Operations

SECTION 5 Maintenance and Troubleshooting

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Transmitter Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

The -Cell

Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Linearity Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Voltage Regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Zero and Span Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Current Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Test Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Board Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

™

Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

TOC-1

Rosemount 1154 Series H

Sensing Module Checkout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Disassembly Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Electrical Housing Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Removing Module Shroud From Electrical Housing. . . . . . . . . . . . 5-4

Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Preliminary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Connecting Electrical Housing to Module Shroud . . . . . . . . . . . . . 5-4

Electrical Housing Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Post-Assembly Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Reference Manual

00809-0100-4631, Rev BA

April 2007

SECTION 6 Specifications and Reference Data

Nuclear Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Radiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Seismic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Steam Pressure/Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Chemical Spray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Post DBE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Quality Assurance Program . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Nuclear Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Hydrostatic Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Traceability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Qualified Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Temperature Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Overpressure Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Static Pressure Zero Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Static Pressure Span Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Power Supply Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Load Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Mounting Position Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Span and Zero. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Zero Elevation and Suppression . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Temperature Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Humidity Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Volumetric Displacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Turn-on Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Pressure Ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Maximum Working Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Static Pressure and Overpressure Limits . . . . . . . . . . . . . . . . . 6-5

Overpressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

TOC-2

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Materials of Construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Process Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Spare Parts Shelf Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

TOC-3

Rosemount 1154 Series H

Reference Manual

00809-0100-4631, Rev BA

April 2007

TOC-4

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Section 1 Introduction

OVERVIEW This manual is designed to assist in installing, operating, and maintaining the

Rosemount 1154 Series H Alphaline® Nuclear Pressure Transmitter. The
manual is organized into the following sections:

Section 2: Installation

Provides general, mechanical, and electrical installation considerations to
guide you through a safe and effective transmitter installation.

Section 3: Calibration

Provides transmitter calibration procedures.

Section 4: Operation

Provides descriptions of how the transmitter operates.

Section 5: Maintenance and Troubleshooting

Provides basic hardware troubleshooting considerations including sensing
module checkout, disassembly and reassembly procedures, and
post-assembly tests.

ABOUT THE TRANSMITTER

Section 6: Specifications and Reference Data

Provides nuclear, performance, functional, and physical transmitter
specifications; also includes ordering information, and a list of spare parts.

Rosemount 1154 Series H Alphaline Pressure Transmitters are designed for
precise pressure measurements in nuclear applications requiring reliable
performance and safety over a specified qualified life. These transmitters
were generically tested to IEEE Std 323-1974 and IEEE Std 344-1975 per the
Qualification Test Report D8700096. The Rosemount 1154 Series H has been
qualification tested to environments typical of pressurized water reactors
(PWR) under accident conditions. Stringent quality control during the
manufacturing process includes traceability of pressure retaining parts,
special nuclear cleaning, and hydrostatic testing.

Rosemount 1154 Series H Transmitters are of a design unique to Class 1E
nuclear service while retaining the working concept and design parameters of
the Rosemount 1151 that has become a standard of reliable service. Units are
available in sealed reference (S), differential (D), and high-line differential (H)
configurations, with a variety of pressure range options (see Table 6-1 on
page 6-7). Figure 2-5 on page 2-8 shows dimensional drawings of the
transmitters.

www.emersonprocess.com/rosemount/nuclear

Rosemount 1154 Series H

Reference Manual

00809-0100-4631, Rev BA

April 2007

1-2

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Section 2 Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . page 2-2

Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-6

OVERVIEW This section contains information and instructions regarding the following

installation-related information:

• General Considerations

• Mechanical Considerations
Process Connections
Conduit

• Electrical Considerations
Mechanical
Electrical

GENERAL CONSIDERATIONS

The quality and accuracy of flow, level, or pressure measurement depends
largely on the proper installation of the transmitter and its associated impulse
piping and valves. For flow measurement, proper installation of the primary
measuring element is also critical to the accuracy of the measurement.
Transmitter installation should minimize the effects of temperature gradients
and temperature fluctuations, and avoid vibration and shock during normal
operation. Take care when designing the measurement to minimize the error
caused by incorrect installation. The temperature of the transmitter ambient
environment affects the qualified life of the transmitter. (See Figure 2-1.)

www.emersonprocess.com/rosemount/nuclear

Rosemount 1154 Series H

Figure 2-1. Qualified Life vs. Ambient Temperature.

Reference Manual

00809-0100-4631, Rev BA

April 2007

Module
Qualified Life

Electronics

Qualified Life

Time (Years)

MECHANICAL CONSIDERATIONS

Ambient Temperature (°F)

This section contains information you should consider when preparing to
mount the transmitter. Read this section carefully before proceeding to the

1154-0293A

mechanical installation procedure.

Mount the Rosemount 1154 Series H transmitter to a rigid support (i.e., one
with a fundamental mechanical resonant frequency of 40 Hz or greater). A
mounting bracket included with the transmitter facilitates panel mounting.
Figure 2-4 on page 2-7 shows the qualified mounting configurations. The
transmitter was seismic tested and qualified with the bracket mounted with

3

/8 in. diameter bolts. Orientation with respect to gravity is not critical to

four
qualification. However, if the transmitter is mounted with the flanges in a
horizontal position, zero the transmitter to cancel the liquid head effect caused
by the difference in height of the process connections.

If the transmitter is mounted to a non rigid panel, ensure that seismic input to
the mounting bracket does not exceed qualification levels given in Rosemount
Report D8700096.

Process Connections Process tubing installation must prevent any added mechanical stress on the

transmitter under seismic disturbances. This may be done by using
stress-relief loops in the process tubing or by separately supporting the
process tubing near the transmitter.

3

The process connections to the transmitter flanges were qualified with
tubing using Swagelok

®

compression fittings. For options using 1/4–18 NPT

connections, the user assumes responsibility for qualifying the interface.

/8 in.

2-2

Transmitters with Flange Options A or H are shipped with Swagelok fittings for
process connections. Included are front ferrule, rear ferrule, and nut. Ensure
the fittings are placed on the tubing with the orientation and relative position
shown in Detail A in Figure 2-5 on page 2-8.

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Process tubing used is 3/8 in. outside diameter, and of suitable thickness for
the pressure involved.

The Swagelok tube fittings are shipped completely assembled for immediate
use. Do not disassemble them before use; doing so may contaminate the
fittings and result in leaks. Insert the tubing into the Swagelok tube fitting,
making sure that the tubing rests firmly on the shoulder of the fitting and that
the nut is finger tight. Tighten the nut one-and-one-quarter turns past finger
tight to prepare the transmitter for use. Do not overtighten.

The connections can be loosened and re-tightened 20–30 times without
compromising the leak-proof seal. To reconnect, insert the tubing with
pre-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 information regarding the use of Swagelok tube fittings, refer to:

Fittings Catalog MS-01-140
“Gaugeable Tube Fittings and Adapter Fittings”
www.swagelok.com

If the drain/vent valves must be opened to bleed process lines, torque them to

1

/2 ft-lb (10 N-m) when closing.

7

Proper location of the transmitter with respect to the process tubing depends
on various process parameters. When determining the best location, consider
the following:

• Keep hot or corrosive fluids from contacting the transmitter.

• Prevent sediment from depositing in the impulse tubing.

• Ambient temperature gradients and fluctuations can result in erroneous
transmitter readings.

• Keep impulse tubing as short as possible.

• For differential transmitters, balance the liquid head on both legs of the
impulse tubing.

• For liquid flow or pressure measurements, make taps on the side of the
line to avoid sediment deposits and mount the transmitter beside or
below the taps so gases vent into the process line (see Figure 2-6 on
page 2-9).

• For gas flow or pressure measurements, make taps on the top or side
of the line and mount the transmitter beside or above the taps so liquid
drains into the process line (see Figure 2-6 on page 2-9).

• For steam flow or pressure measurements, make taps on the side of
the line and mount the transmitter below the taps so the impulse tubing
stays filled with condensate (see Figure 2-6 on page 2-9).

• For steam service, fill the lines with water to prevent steam from
contacting the transmitter. Condensate chambers are not necessary
since the volumetric displacement of the transmitter is negligible.

2-3

Rosemount 1154 Series H

The piping between the process and the transmitter must transfer the
pressure measured at the process taps to the transmitter. Possible sources of
error in this pressure transfer are:

•Leaks

• Friction loss (particularly if purging is used)

• Trapped gas in a liquid line or trapped liquid in a gas line (head error)

• Temperature-induced density variation between legs (head error) for
differential transmitters

To minimize the possibility of errors, take the following precautions:

• Make impulse tubing as short as possible.

• Slope tubing at least one inch per foot up toward the process
connections for liquid and steam.

• Slope tubing at least one inch per foot down toward the process
connections for gas.

• Avoid high points in liquid lines and low points in gas lines.

• Use impulse tubing of sufficient diameter to avoid friction effects.

• Ensure that all gas is vented from liquid tubing legs.

• Ensure that impulse tubing is of adequate strength to be compatible
with anticipated pressures.

Reference Manual

00809-0100-4631, Rev BA

April 2007

For differential transmitters, also consider the following:

• Keep both impulse legs at the same temperature.

• When using 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 tubing. Avoid purging
through the transmitter.

Conduit The conduit connection to the transmitter is

conduit seal at the conduit entry to prevent moisture from accumulating in the
terminal side of the housing during accident conditions. 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 on page 2-9.

ELECTRICAL CONSIDERATIONS

This section contains information that you should consider when preparing to
make electrical connections to the transmitter. Read this section carefully
before proceeding to the electrical installation procedures.

The Rosemount 1154 Series H Pressure Transmitter provides a 4–20 mA
signal when connected to a suitable dc power source. Figure 2-2 on page 2-5
shows a typical signal loop consisting of transmitter, power supply, and
various receivers (controller, indicator, computer, etc.). The power supply
must supply 12 volts minimum to the transmitter terminals at 30 mA
(overscale) signal, or the maximum output current required for proper system
operation. Any power supply ripple will be seen in the output load. The supply
voltage versus load limitation relationship is shown in Figure 2-3 on page 2-5.
See qualification report D8700096 for details. The load is the sum of the
resistance of the signal leads and the load resistance of the receivers.

1

/2–14 NPT. Use a qualified

2-4

Reference Manual

00809-0100-4631, Rev BA
April 2007

Rosemount 1154 Series H

Signal wiring need not be shielded, but twisted pairs should be used for best
results. In electrically noisy environments, shielded cable should be used for
best results. Do not run signal wiring in conduit or open trays with power
wiring, nor near heavy electrical equipment. Signal wiring may be ungrounded
(floating) or grounded at any place in the signal loop. The transmitter case
may be grounded or ungrounded.

The capacitance sensing element uses alternating current to generate a
capacitance signal. This alternating current is developed in an oscillator circuit
with a frequency of 32,000 ±10,000 Hz. This 32,000 Hz signal is capacitor
coupled to transmitter case ground through the sensing element. Because of
this coupling, a voltage may be imposed across the load, depending on
choice of grounding.

This impressed voltage, which is seen as high frequency noise, will have no
effect on most instruments. Computers with short sampling times in a circuit
where the negative transmitter terminal is grounded, will detect a significant
noise signal. Filter this noise with a large capacitor (1 µf) or by using a 32,000
Hz LC filter across the load. Signal loops grounded at any other point are
negligibly affected by this noise and do not need filtering.

Figure 2-2. Transmitter Wiring Connections.

Figure 2-3. Transmitter Load Limits.

Terminal Side
(cover removed)

1825

1575

1500

1000

Power

Supply

1154-G05A

4–20 mA dc

Qualified
Region

45

Design
Region

50

2-5

500

0

Load Resistance ()

0

12

13.5

Power Supply (V dc)

35

40