Rosemount DP Level Transmitters and Diaphragm Seal Systems Quick Start Guide

Quick Start Guide

00825-0100-4016, Rev DA

June 2022

Rosemount™ DP Level Transmitters and
Diaphragm Seal Systems

Quick Start Guide June 2022

NOTICE

This guide provides basic guidelines for the Rosemount DP Level Transmitters and Diaphragm Seal
Systems Reference Manual. It does not provide instructions for configuration, diagnostics,
maintenance, service, or troubleshooting. Refer to the appropriate reference manual for more
instruction. This guide are also available electronically on Emerson.com/Rosemount.

WARNING

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 your local Emerson Sales
Representative.

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.

Contents

Introduction.................................................................................................................................3

Preface.........................................................................................................................................4

General handling overview........................................................................................................... 5

Mechanical installation ................................................................................................................ 6

Ranging the transmitter............................................................................................................. 12

Rosemount 1199 seal types....................................................................................................... 13

Rosemount 1299 Seal Types...................................................................................................... 14

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June 2022 Quick Start Guide

1 Introduction

A remote seal system consists of a pressure transmitter, a remote seal, and
either a direct mount or capillary style connection filled with a secondary fill
fluid. During operation, the thin, flexible diaphragm and fill fluid separate
the pressure sensor of the transmitter from the process medium. The
capillary tubing or direct mount flange connects the diaphragm to the
transmitter. When process pressure is applied, the diaphragm is displaced,
transferring the measured pressure through the filled system, by way of the
capillary tubing, to the transmitter. This transferred pressure displaces the
sensing diaphragm in the pressure sensor of the transmitter. This
displacement is proportional to the process pressure and is converted
electronically to an appropriate output current and/or digital protocol.

Figure 1-1: Path of Pressure in a Standard DP Level Seal System

A. Pressure
B. Process isolating diaphragm
C. Transmitter diaphragm

D. Fill fluid

E. Transmitter pressure sensor

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2 Preface

This guide is designed to assist with general handling and installation
instructions for the Rosemount DP Level Transmitters and both 1199 and
1299 Diaphragm Seal Systems. The Rosemount DP Level Transmitters and
Diaphragm Seal Systems Reference Manual contains supplemental
information about the seal system assemblies that are not covered in the
corresponding transmitter manuals.

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3 General handling overview

Check if equipment received conforms to the order. If any issues, contact
your local Emerson sales representative immediately.

When unpacking or handling seal system assemblies, do not lift the seal or
transmitter by gripping the capillaries, doing so could result in disconnecting
the seal and/or capillary from the transmitter, which will void the warranty.

The material of a remote seal is designed to withstand pressure and wear
from process material, but outside of process connection conditions,
remote seals are delicate and should be handled with care.

The protective cover should remain on the seal until the moment before
installation. Try to avoid touching the diaphragm with fingers or objects and
refrain from setting the diaphragm side of the seal down on a hard surface.
Even minor dents or scratches in the diaphragm material may impair the
performance of the seal system assembly.

Avoid sharply bending or crimping the capillary tubing. The minimum
bending radius of the capillary tubing is 3-in. (8 cm).

When using heat or steam tracing, exercise caution if PVC coating is added
onto capillary. The PVC coating on the armor will break down at
temperatures around 212 °F (100 °C). Best practice for heat and steam
tracing is to regulate the temperature above the maximum ambient
temperature for a consistent result. To avoid accuracy effects and thermal
stress, the capillary should not be partially heated.

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4 Mechanical installation

NOTICE

Never attempt to disconnect the seals or capillaries from the transmitter or
loosen bolts. Doing so will result in loss of fill fluid and will void the product
warranty.

4.1 Mounting the seal system in vacuum applications

Mounting the pressure transmitter at or below the bottom vessel tap is an
important factor to ensure a stable measurement with vacuum applications.
The static pressure limit for a differential pressure transmitter is 0.5 psia (25
mmHgA), which ensures the transmitter sensor module fill fluid remains
within the liquid phase of the vapor pressure curve.

If the vessel static limit is below 0.5 psia, mounting the transmitter below
the bottom tap provides a capillary fill fluid head pressure on the module. A
general rule in vacuum applications is to mount the transmitter
approximately 3 ft. (1 m) below the bottom tap of the vessel.

Capillaries are to be securely fastened in order to avoid false readings.

4.2 Insulation considerations with a Thermal Range Expander seal system

The Thermal Range Expander System uses the heat from the process in order
to keep both fluids within the system functioning properly, therefore
insulation is not always required. However, it is always best practice to
insulate systems to keep them functioning with optimum performance. The
Thermal Range Expander should never be insulated above the line marked
on the seal itself, see the figure below for reference.

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June 2022 Quick Start Guide

Figure 4-1: Thermal Range Expander System Insulation Considerations

4.3 Flanged type seals

Gaskets

When installing remote seal systems which employ a gasket or a gasket and
flushing connection ring, make sure the gasket is aligned properly on the
gasket sealing surface. Failure to properly install the gasket may cause
process leaks, which can result in death or serious injury. In addition, make
sure the gasket does not press down upon the diaphragm face. Anything
pressing on the diaphragm will be read by the transmitter as pressure. A
misaligned gasket may cause a false reading or damage the diaphragm.

The diaphragm gasket is supplied when a lower housing or flushing
connection is provided. The default gaskets are listed below, based on seal
type. The process gasket must be supplied by the end user. Tantalum
diaphragms are not supplied with default gasket, so a gasket option must be
selected when applicable.

Table 4-1: Gasket Materials

Seal type Gaskets

Flanged seals assemblies

FFW Klinger C-4401

RFW Klinger C-4401

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Table 4-1: Gasket Materials (continued)

Seal type Gaskets

EFW No gasket is supplied

PFW Klinger C-4401

FCW No gasket is supplied

RCW Klinger C-4401

FUW/FVW No gasket is supplied

Threaded seal assemblies

RTW Klinger C-4401

HTS No gasket is supplied

Hygienic seal assemblies

(1)

SCW

SSW Ethylene propylene O-ring

STW Ethylene propylene O-ring

EES No gasket is supplied

(1)

VCS

(1)

SVS

SHP No gasket is supplied

(1)

SLS

(1)

MLS

Specialty seals

WSP Klinger C-4401

UCP Barium-Sulfate filled PTFE O-ring

CTW No gasket is supplied

TFW No gasket is supplied

WFW Klinger C-4401

No gasket is supplied

No gasket is supplied

No gasket is supplied

No gasket is supplied

No gasket is supplied

(1) Ensure to use EHEDG approved gasket for EHEDG conformity.

1299 does not come with a default gasket, it must be specified in the model
number or ordered as a spare.

Maximum working pressure (MWP)

Verify the MWP as marked on the transmitter neck label meets or exceeds
the expected maximum process pressure the transmitter/seal assembly

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could experience once installed. If a flushing ring is used, its MWP should
also be verified.

Bolt torquing

When connecting the process and mating flange, the bolts should be
torqued to the applicable flange requirements. Required torque is a function
of the gasket material and surface treatment of the bolts and nuts which are
customer supplied.

4.4 Pancake type seal options

Capillary support tube

A common option for the pancake type seal (PFW) is the capillary support
tube. Due to the side capillary-to-seal connection, the support tube provides
a handle for aligning the pancake seal during installation. The support tube
should not be used for supporting any weight above that of the remote seal.

Process flange

Emerson offers the option of supplying the process flange, otherwise the
process flange is furnished by the customer. For certain pancake seal
assemblies, the Emerson supplied process flange has a machined hole
through the center of the flange. This hole corresponds to a threaded
connection in the back of the pancake seal upper housing. The flange can,
therefore be connected to the seal prior to installation to make handling
easier.

4.5

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Threaded type seals

Lower housing installation procedure

The lower housing of the remote seal has either a male or female thread
connection for attachment to a process pipe nipple. When threading the
lower housing to the process pipe, care should be taken not to overtighten.
The applied torque should comply to ANSI B1.20.1 for NPT connections or
applicable torque requirements for pipe connections.

Upper housing installation procedure

The threaded seal is supplied with carbon steel, bolts, and nuts. 304 SST or
316 SST bolts and nuts can be ordered as options. The torque specifications
for the RTW seal can be found in the table below.

Gasket installation

Threaded seals with flushing connection rings come with a sealing gasket.
When connecting the remote seal, gasket, and flushing connection ring
make sure the gasket is properly aligned on the gasket sealing surface.

Quick Start Guide June 2022

Table 4-2: Torque Specifications

PSIG rating Bolt material Torque specification

800 CS 20 ft-lbs

500 SST 15 ft-lbs

2500 CS 53 ft-lbs

2500 SST 50 ft-lbs

5000 CS 105 ft-lbs

5000 SST 120 ft-lbs

10000 CS (SST N/A) 180 ft-lbs

Alternative system installation procedure

An alternative to threading the entire seal system assembly to the process
piping is to unbolt the seal upper and lower housing and thread the lower
housing to the hard piping separately. Bolt the upper and lower housings
together to the required torque specification. Note that gaskets need to be
replaced once they have been torqued. Thus this alternative system
installation procedure requires gasket replacement.

4.6 Hygienic type seals

Hygienic approvals

Supplied 3-A approved hygienic seals are marked with a 3-A symbol.

Supplied EHEDG approved hygienic seals are marked with a EHEDG symbol.

Clamp style tank spud

For clamp style tank spud seals the procedures for welding the tank spud to
the tank vessel are shipped with the tank spud. For the welding procedure
refer to Rosemount DP Level Transmitters and Diaphragm Seal Systems

Reference Manual for proper welding tank spud guidelines.

The clamp and gasket are furnished by the user. Maximum pressure rating of
the system is dependent upon the clamp device. The clamp and O-ring are
provided with the tank spud seal. Attach the clamp and hand-tighten the
connection.

Flange style tank spud

When connecting the process and mating flange, the bolts should be
torqued to the specifications outlined by ANSI B16.5 or applicable flange
requirements.

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4.7 Saddle type seals

Lower housing installation procedure

For 4-in. line size, the lower housing is welded directly into the process pipe.
For 2- and 3-in. line sizes, the lower housing is welded onto the process pipe.
The upper housing must be removed from the system when welding the
lower housing into the process pipe. Allow the pipe connection to cool
before installing the seal upper housing.

Upper housing installation procedure

The torque specifications for the saddle seal upper housings is 180 in-lb. (20
N-m) for all bolting material. As it is necessary for the customer to torque the
upper housing bolts during installation, each saddle seal includes a torque
label with the specified torque.

Gasket installation

The saddle type seal comes standard with a sealing gasket. When
connecting the upper and lower housings make sure the gasket is aligned
properly on the gasket sealing surface.

4.8 TFS wafer style in-line seal

Connection styles

The in-line flow-through seal is attached to the process piping by flange,
clamp, or male threaded connections.

Flanged type connection

The flow-through seal comes between the two process flanges due to the
flanged process connection. The bolts should be torqued to the
specifications outlined by ANSI B16.5 or EN 1092-1, JIS B 2210 flange torque
requirements. Required torque is a function of the gasket material and
surface treatment of the bolts and nuts, which are customer supplied.

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5 Ranging the transmitter

Rosemount DP Level Transmitters and Diaphragm Seal Systems Reference

Manual for proper ranging guidelines for open tank-single seal and

pressurized tank-two seals.

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6 Rosemount 1199 seal types

6.1 Flanged seal assemblies

FFW Flush Flanged Seal

RFW Flanged Seal

EFW Extended Flanged Seal

PFW Pancake Seal

FCW Flush Flanged Seal - Ring Type Joint (RTJ) Gasket Surface

RCW Ring Type Joint (RTJ) Flanged Seal

FUW and FVW Flush Flanged Type Seals

6.2 Threaded seal assemblies

RTW Threaded Seal

HTS Male Threaded Seal

6.3 Hygienic seal assemblies

SCW Hygienic Tri-Clover Style Tri Clamp Seal

SSW Hygienic Tank Spud Seal

STW Hygienic Thin Wall Tank Spud Seal

EES Hygienic Flanged Tank Spud Extension Seal

VCS Tri Clamp In-Line Seal

SVS VARIVENT® Compatible Hygienic Connection Seal

SHP Hygienic Cherry-Burrell “I” Line Seal

SLS Dairy Process Connection - Female Thread Seal per DIN 11851

6.4

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Specialty seal assemblies

WSP Saddle Seal

UCP Male Threaded Pipe Mount Seals and PMW Paper Mill Sleeve Seals

CTW Chemical Tee Seal

TFS Wafer Style In-Line Seal

WFW Flow-Thru Flanged Seal

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7 Rosemount 1299 Seal Types

7.1 Flanged seal assemblies

Offline Flanged Seal

Flush Flanged Seal

Pancake Seal

Extended Flange Seal

Flush Flanged with RTJ Surface Seal

7.2 Threaded Seal

Offline Threaded Seal

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Quick Start Guide 15

*00825-0100-4016*

00825-0100-4016, Rev. DA

Quick Start Guide

June 2022

For more information:

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