Rosemount 5408 Operating Manual
Rosemount™ 5408 and 5408:SIS Level
Transmitters
Non-Contacting Radar
Reference Manual
00809-0100-4408, Rev BB
April 2018
Rosemount 5408 and 5408:SIS Level Transmitters – Non-Contacting Radar
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 technical assistance, contacts are listed below:
Customer Central
Technical support, quoting, and order-related questions.
• United States - 1-800-999-9307 (7:00 am to 7:00 pm CST)
• Asia Pacific- 65 777 8211
North American Response Center
Equipment service needs.
• 1-800-654-7768 (24 hours a day — includes Canada)
• Outside of these areas, contact your local Emerson representative.
WARNING!
Failure to follow safe installation and servicing guidelines could result in death or serious injury.
• Make sure the transmitter is installed by qualified personnel and in accordance with applicable code of practice.
• Use the equipment only as specified in this manual. Failure to do so may impair the protection provided by the equipment.
• For installations in hazardous locations, the transmitter must be installed according to the Rosemount 5408 and 5408:SIS
Product Certifications document and System Control Drawing (D7000002-885).
Explosions could result in death or serious injury.
• Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations
certifications.
• Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments are installed in accordance
with intrinsically safe or non-incendive field wiring practices.
• In Explosion-proof/Flameproof and Non-Incendive/Type n installations, do not remove the transmitter covers when power is
applied to the unit.
• Both transmitter covers must be fully engaged to meet Explosion-proof/Flameproof requirements.
Electrical shock could cause death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock.
• Make sure the mains power to the transmitter is off and the lines to any other external power source are disconnected or not
powered while wiring the transmitter.
Process leaks could result in death or serious injury.
• Make sure that the transmitter is handled carefully. If the process seal is damaged, gas might escape from the tank.
Any substitution of non-recognized parts may jeopardize safety. Repair, e.g. substitution of components etc., may also jeopardize
safety and is under no circumstances allowed.
• Unauthorized changes to the product are strictly prohibited as they may unintentionally and unpredictably alter
performance and jeopardize safety. Unauthorized changes that interfere with the integrity of the welds or flanges, such as
making additional perforations, compromise product integrity and safety. Equipment ratings and certifications are no
longer valid on any products that have been damaged or modified without the prior written permission of Emerson. Any
continued use of product that has been damaged or modified without the written authorization is at the customer’s sole risk
and expense.
CAUTION!
Hot surfaces
The flange and process seal may be hot at high process temperatures. Allow to cool before servicing.
CAUTION!
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.
Contents
Contents
Chapter 1 Introduction .....................................................................................................................1
1.1 Using this manual ...........................................................................................................................1
1.2 Product recycling/disposal ............................................................................................................. 1
Chapter 2 Transmitter Overview ...................................................................................................... 3
2.1 Measurement principle .................................................................................................................. 3
2.2 Process characteristics ................................................................................................................... 4
2.2.1 Dielectric constant ...........................................................................................................4
2.2.2 Foam and turbulence .......................................................................................................4
2.2.3 Dust .................................................................................................................................5
2.2.4 Solid surface .................................................................................................................... 5
2.3 Vessel characteristics ..................................................................................................................... 6
2.3.1 In-tank obstructions ........................................................................................................ 6
2.3.2 Tank shape ...................................................................................................................... 6
2.4 Application examples ..................................................................................................................... 6
2.5 Components of the transmitter ......................................................................................................8
2.6 System integration .......................................................................................................................10
Chapter 3 Mechanical Installation .................................................................................................. 13
3.1 Safety messages ...........................................................................................................................13
3.2 Confirm approval type ..................................................................................................................13
3.3 Installation considerations ........................................................................................................... 14
3.3.1 Mounting position .........................................................................................................14
3.3.2 Free space requirements ............................................................................................... 15
3.3.3 Antenna size ..................................................................................................................16
3.3.4 Antenna inclination ....................................................................................................... 16
3.3.5 Non-metallic tanks ........................................................................................................ 17
3.3.6 Beam width and beam angle ..........................................................................................17
3.3.7 Nozzle requirements ..................................................................................................... 19
3.3.8 Still pipe/chamber installations ......................................................................................21
3.3.9 Ball valve installation ..................................................................................................... 24
3.4 Mounting preparations ................................................................................................................ 25
3.4.1 Assemble the segmented cone antenna ........................................................................ 25
3.4.2 Shorten the extended cone antenna ..............................................................................26
3.5 Mount the cone antenna .............................................................................................................. 28
3.5.1 Protective cap ................................................................................................................28
3.5.2 Flanged version ............................................................................................................. 29
3.5.3 Flanged version with air purge ring (option code PC1) ................................................... 30
3.5.4 Threaded version, antenna diameter (D) < Thread diameter (d) .....................................31
3.5.5 Threaded version, antenna diameter (D) > Thread diameter (d) .....................................34
3.5.6 Bracket mounting ..........................................................................................................36
3.5.7 Align transmitter head ...................................................................................................38
3.6 Mount the process seal antenna ...................................................................................................40
3.6.1 Flanged version ............................................................................................................. 40
3.6.2 Tri-Clamp version .......................................................................................................... 42
3.7 Mount the parabolic antenna ....................................................................................................... 43
3.7.1 Flanged version ............................................................................................................. 43
Rosemount 5408 and 5408:SIS Level Transmitters i
Contents
3.7.2 Threaded version ...........................................................................................................45
3.7.3 Welded version ..............................................................................................................49
3.7.4 Adjust the inclination of the antenna ............................................................................. 53
3.7.5 Connect the air purging .................................................................................................56
3.8 Adjust display orientation (optional) ............................................................................................ 57
Chapter 4 Electrical Installation ......................................................................................................59
4.1 Safety messages ...........................................................................................................................59
4.2 Cable selection .............................................................................................................................59
4.3 Cable gland/conduit .....................................................................................................................60
4.4 Power supply ................................................................................................................................60
4.5 Load limitations ............................................................................................................................60
4.6 Hazardous areas ...........................................................................................................................60
4.7 Wiring diagram ............................................................................................................................ 61
4.8 Grounding ....................................................................................................................................62
4.9 Connect wiring and power up .......................................................................................................63
4.10 Optional devices .......................................................................................................................... 66
4.10.1 Rosemount™ 333 HART Tri-Loop™
................................................................................. 66
Chapter 5
Configuration .................................................................................................................69
5.1 Safety messages ...........................................................................................................................69
5.2 Overview ......................................................................................................................................69
5.3 System readiness ......................................................................................................................... 69
5.3.1 Confirm correct device driver ........................................................................................ 69
5.4 Get started with your preferred configuration tool ....................................................................... 70
5.4.1 Configuration tools ........................................................................................................70
5.4.2 Rosemount Radar Master Plus ....................................................................................... 71
5.4.3 AMS Device Manager .....................................................................................................71
5.4.4 Field Communicator ......................................................................................................72
5.5 Confirm HART revision capability ................................................................................................. 72
5.5.1 Switch HART revision mode ...........................................................................................72
5.6 Configure device using Guided Setup ...........................................................................................73
5.6.1 Configure using Rosemount Radar Master Plus ..............................................................73
5.6.2 Configure using AMS Device Manager ........................................................................... 73
5.6.3 Configure using Field Communicator .............................................................................73
5.7 Verify level ................................................................................................................................... 73
5.7.1 Use Rosemount Radar Master Plus .................................................................................74
5.7.2 Use AMS Device Manager and Field Communicator .......................................................74
5.8 Establish multidrop communication .............................................................................................75
5.8.1 Use Rosemount Radar Master Plus .................................................................................75
5.8.2 Use AMS Device Manager .............................................................................................. 75
5.8.3 Use Field Communicator ............................................................................................... 75
5.9 Use with the Rosemount 333 HART Tri-Loop ................................................................................ 75
Chapter 6 Operation ...................................................................................................................... 77
6.1 LCD display screen messages ....................................................................................................... 77
6.1.1 Startup screen sequence ............................................................................................... 77
6.1.2 Variable screens .............................................................................................................78
6.2 Set up the LCD display ..................................................................................................................79
6.2.1 Use Rosemount Radar Master Plus ................................................................................. 79
6.2.2 Use AMS Device Manager and Field Communicator ....................................................... 79
6.3 View measurement data .............................................................................................................. 79
6.3.1 Use Rosemount Radar Master Plus ................................................................................. 79
ii Reference Manual
Contents
6.3.2 Use AMS Device Manager and Field Communicator ....................................................... 80
6.3.3 Interpret measurement status ....................................................................................... 80
6.4 Device status ................................................................................................................................81
6.4.1 Check device status ....................................................................................................... 81
Chapter 7 Service and Troubleshooting .......................................................................................... 85
7.1 Safety messages ...........................................................................................................................85
7.2 Diagnostic messages ....................................................................................................................85
7.3 Troubleshooting guide .................................................................................................................91
7.4 Service and troubleshooting tools ................................................................................................ 97
7.4.1 Using the echo curve ..................................................................................................... 97
7.4.2 Managing disturbance echoes ..................................................................................... 101
7.4.3 Perform an analog loop test .........................................................................................107
7.4.4 Use the TEST terminal .................................................................................................. 108
7.4.5 Calibrate analog out .................................................................................................... 110
7.4.6 Save a backup file of the device configuration ..............................................................110
7.4.7 Download configuration from file to device ................................................................. 111
7.4.8 Restore to default settings ...........................................................................................111
7.4.9 Use the simulation mode ............................................................................................. 111
7.4.10 View input registers ..................................................................................................... 112
7.4.11 View/edit holding registers ..........................................................................................112
7.4.12 Write protect a transmitter ..........................................................................................113
7.5 Application challenges ............................................................................................................... 114
7.5.1 Handling disturbances at top of tank ........................................................................... 114
7.5.2 Tracking of weak surface echoes close to tank bottom ................................................ 116
7.5.3 Handling ghost echoes in still pipes ............................................................................. 119
7.5.4 Handling strong double bounce echoes .......................................................................120
7.6 Replace the transmitter head ..................................................................................................... 122
7.7 Cleaning or replacing the PTFE sealing ....................................................................................... 124
7.7.1 Flanged version ........................................................................................................... 125
7.7.2 Tri Clamp version ......................................................................................................... 126
7.8 Service support .......................................................................................................................... 128
Chapter 8 Safety Instrumented Systems (4-20 mA only) ............................................................... 131
8.1 Safety messages .........................................................................................................................131
8.2 Terms and definitions .................................................................................................................131
8.3 Safety Instrumented System (SIS) certification ...........................................................................133
8.4 Safety certified identification ..................................................................................................... 134
8.5 Installation ................................................................................................................................. 135
8.5.1 Measuring range ..........................................................................................................136
8.6 Configuration .............................................................................................................................136
8.6.1 Prerequisites ................................................................................................................136
8.6.2 Configure device using Guided Setup .......................................................................... 136
8.6.3 Set operational mode .................................................................................................. 136
8.6.4 Enable safety mode ..................................................................................................... 137
8.6.5 Alarm and saturation levels ..........................................................................................137
8.7 Site acceptance ..........................................................................................................................138
8.8 Proof-testing ..............................................................................................................................138
8.8.1 Overview ..................................................................................................................... 138
8.8.2 Perform 1-point level and analog output verification ................................................... 139
8.8.3 Perfom 2-point level and analog output verification .................................................... 142
8.8.4 Perform analog output verification .............................................................................. 144
Rosemount 5408 and 5408:SIS Level Transmitters iii
Contents
8.8.5 Perform level deviation monitoring ............................................................................. 144
8.8.6 Product repair ..............................................................................................................145
8.9 Specifications .............................................................................................................................145
8.9.1 Failure rate data ...........................................................................................................145
8.9.2 Safety deviation ...........................................................................................................145
8.9.3 Transmitter response time .......................................................................................... 145
8.9.4 Diagnostic test interval ................................................................................................ 145
8.9.5 Turn-on time ............................................................................................................... 145
Appendices and reference
Appendix A Specifications and Reference Data ................................................................................ 147
A.1 Performance specifications ........................................................................................................ 147
A.1.1 General ........................................................................................................................147
A.1.2 Measuring range ..........................................................................................................148
A.1.3 Environment ................................................................................................................150
A.2 Functional specifications ............................................................................................................ 151
A.2.1 General ........................................................................................................................151
A.2.2 Display and configuration ............................................................................................151
A.2.3 4-20 mA HART .............................................................................................................153
A.2.4 Diagnostics ..................................................................................................................155
A.2.5 Process temperature and pressure rating .................................................................... 156
A.2.6 Temperature limits ......................................................................................................157
A.2.7 Flange rating ............................................................................................................... 158
A.2.8 Conditions used for flange strength calculations ......................................................... 159
A.2.9 Air purging .................................................................................................................. 161
A.2.10 System integration ...................................................................................................... 162
A.3 Physical specifications ................................................................................................................ 163
A.3.1 Material selection ........................................................................................................ 163
A.3.2 Engineered solutions ................................................................................................... 163
A.3.3 Housing and enclosure ................................................................................................ 163
A.3.4 Tank connection ..........................................................................................................164
A.3.5 Flange dimensions .......................................................................................................164
A.3.6 Antenna versions .........................................................................................................164
A.3.7 Material exposed to tank atmosphere ..........................................................................164
A.4 Ordering Information ................................................................................................................. 165
A.4.1 Rosemount 5408 Level Transmitter .............................................................................165
A.4.2 Rosemount 5408:SIS Level Transmitter ....................................................................... 170
A.5 Availability of process connections .............................................................................................176
A.6 Spare parts and accessories ........................................................................................................178
A.6.1 Accessories ..................................................................................................................185
A.7 Dimensional drawings ................................................................................................................186
A.7.1 Standard flanges ..........................................................................................................190
Appendix B Product Certifications ...................................................................................................193
B.1 European directive information ..................................................................................................193
B.2 Safety Instrumented Systems (SIS) .............................................................................................193
B.3 Telecommunication compliance ................................................................................................ 193
B.4 FCC ............................................................................................................................................ 194
B.5 IC ............................................................................................................................................... 194
B.6 Radio Equipment Directive (RED) 2014/53/EU ........................................................................... 195
B.7 Installing equipment in North America .......................................................................................196
iv Reference Manual
Contents
B.8 U.S.A. ......................................................................................................................................... 196
B.8.1 E5 Explosionproof (XP), Dust-Ignitionproof (DIP) ......................................................... 196
B.8.2 I5 Intrinsic Safety (IS), Non-Incendive (NI) .................................................................... 198
B.9 Canada .......................................................................................................................................199
B.9.1 E6 Explosionproof, Dust-Ignitionproof ......................................................................... 199
B.9.2 I6 Intrinsically Safe and Non-Incendive Systems ........................................................... 201
B.10 Europe ....................................................................................................................................... 203
B.10.1 E1 ATEX Flameproof .................................................................................................... 203
B.10.2 I1 ATEX Intrinsic Safety ................................................................................................ 204
B.10.3 N1 ATEX Type N: Non-Sparking ....................................................................................206
B.11 International .............................................................................................................................. 206
B.11.1 E7 IECEx Flameproof .................................................................................................... 206
B.11.2 I7 IECEx Intrinsic Safety ................................................................................................ 207
B.11.3 N7 IECEx Type N: Non-Sparking ................................................................................... 209
B.12 Brazil .......................................................................................................................................... 209
B.12.1 E2 INMETRO Flameproof ..............................................................................................209
B.12.2 I2 INMETRO Intrinsic Safety ......................................................................................... 210
B.12.3 N2 INMETRO Type N: Non-Sparking ............................................................................. 210
B.13 China ..........................................................................................................................................211
B.13.1 E3 Flameproof ............................................................................................................. 211
B.13.2 I3 Intrinsic Safety ......................................................................................................... 211
B.13.3 N3 Type N: Non-Sparking .............................................................................................211
B.14 India ...........................................................................................................................................212
B.14.1 Intrinsic Safety ............................................................................................................. 212
B.14.2 Flameproof Safety ....................................................................................................... 212
B.14.3 Intrinsic Safety and Flameproof ................................................................................... 212
B.15 Republic of Korea ....................................................................................................................... 212
B.15.1 IP Intrinsic Safety ......................................................................................................... 212
B.16 Additional certifications ............................................................................................................. 213
B.16.1 QT Safety-certified to IEC 61508:2010 with certificate of FMEDA data ......................... 213
B.16.2 Suitable for intended use ............................................................................................. 213
B.16.3 U1 Overfill prevention ..................................................................................................213
B.16.4 QA 3-A ......................................................................................................................... 213
B.17 Installation drawings .................................................................................................................. 214
Appendix C Configuration Parameters ............................................................................................ 221
C.1 Menu tree .................................................................................................................................. 221
C.2 Device setup .............................................................................................................................. 223
C.2.1 HART protocol ............................................................................................................. 223
C.2.2 Units ............................................................................................................................224
C.2.3 Analog output ............................................................................................................. 224
C.2.4 Display .........................................................................................................................225
C.2.5 Security ....................................................................................................................... 225
C.2.6 Device Information ......................................................................................................226
C.3 Level setup ................................................................................................................................. 227
C.3.1 Geometry .................................................................................................................... 227
C.3.2 Environment ................................................................................................................235
C.3.3 Volume ........................................................................................................................236
C.3.4 Scaled variable .............................................................................................................236
C.3.5 Antenna .......................................................................................................................237
C.3.6 Advanced .................................................................................................................... 239
C.4 Alert setup ................................................................................................................................. 245
Rosemount 5408 and 5408:SIS Level Transmitters v
Contents
C.4.1 Measurement recovery ................................................................................................245
C.4.2 Signal quality alert ....................................................................................................... 245
C.4.3 High/low user defined alert ..........................................................................................246
vi Reference Manual
1 Introduction
1.1 Using this manual
The sections in this manual provide information on installing, operating, and maintaining
the Rosemount™ 5408 and 5408:SIS Level Transmitters – Non-Contacting Radar.
The sections are organized as follows:
Chapter 2 provides an introduction to theory of operation, a description of the transmitter,
information on typical applications, and process characteristics.
Chapter 3 contains mechanical installation instructions.
Chapter 4 contains electrical installation instructions.
Chapter 5 provides instructions on configuration of the transmitter.
Introduction
Chapter 6 contains operation and maintenance techniques.
Chapter 7 provides troubleshooting techniques for the most common operating problems.
Chapter 8 contains identification, commissioning, maintenance, and operations
information for safety-certified transmitter used in Safety Instrumented Systems (SIS)
applications.
Appendix A supplies reference and specification data, as well as ordering information.
Appendix B contains safety approval information and approval drawings.
Appendix C provides extended information about the configuration parameters.
1.2 Product recycling/disposal
Recycling of equipment and packaging should be taken into consideration and disposed of
in accordance with local and national legislation/regulations.
Rosemount 5408 and 5408:SIS Level Transmitters 1
Introduction
2 Reference Manual
2 Transmitter Overview
G
I
LQ
I
PD[
I
PLQ
I
RXW
I
LQ
I
RXW
W
I
$
&
'
%
2.1 Measurement principle
The Rosemount™ 5408 and 5408:SIS are two-wire transmitters for continuous level
measurements over a broad range of liquids, slurries, and solids. The measurement
principle is fast-sweep Frequency Modulated Continuous Wave (FMCW).
The transmitter continuously emits signal sweeps with a constantly varying frequency
towards the product surface. Since the transmitter continuously changes the frequency of
the transmitted signal, there will be a difference in frequency between the transmitted and
the reflected signals (see Figure 2-1).
The frequency of the reflected signal is subtracted from the frequency of the signal
transmitted at that moment, resulting in a low frequency signal which is proportional to
the distance to the product surface. This signal is further processed to obtain fast, reliable,
and highly accurate level measurements. See Figure 2-2 for a schematic overview of the
signal processing.
Transmitter Overview
FMCW-methodFigure 2-1:
Δf≈d=distance
A. Frequency (GHz)
Time (s)
B.
C. Transmitted signal
D. Reflected signal
Rosemount 5408 and 5408:SIS Level Transmitters 3
Peak search
Fast Fourier transform
(FFT)
Peak interpolation
Echo tracker
Echo identifier
Distance filtering
Variable calculation
Aout handler LCD handler HART
Microwave module
A/D coverter
Transmitter Overview
Flowchart of the Signal ProcessingFigure 2-2:
2.2 Process characteristics
2.2.1 Dielectric constant
A key parameter for measurement performance is reflectivity. A high dielectric constant of
the media provides better reflection and enables a longer measuring range.
2.2.2 Foam and turbulence
Foaming liquids or turbulence may cause weak and varying surface echo amplitudes. The
effects of turbulence are usually minor, but in the most challenging conditions, the
transmitter may be mounted in a still pipe. In addition, measurement performance can be
optimized by configuring the appropriate process conditions settings, see
Process conditions.
4 Reference Manual
Measurement in foamy applications depends largely on the foam properties. When the
foam is light and airy, the actual product level is measured. For heavy and dense foam, the
transmitter may measure the level of the foam’s upper surface. The Double Surface
Handling function allows the user to select if the foam layer or product surface should be
used as output (see Double surface handling).
2.2.3 Dust
Dust is often present in solids applications, and even if the non-contacting radar is not
affected by the dust in the vapor space, dust can be sticky and create a layer on the
antenna. If this layer becomes too thick, it may affect the measurement. This is best
managed by using air purging.
2.2.4 Solid surface
Solids have some common characteristics which may cause weak and varying surface
reflections. The surface is rarely flat or horizontal, the angle of the sloping surface differs
during filling and emptying, and the dielectric constant of many solids is fairly
low.Table 2-1 presents common characteristics of some solids applications.
Transmitter Overview
The parabolic antenna is ideal for applications with weak surface reflections. A larger
diameter concentrates the radar beam and ensures maximum antenna gain. The parabolic
antenna comes with a swivel connection that adjusts for angled tank roofs.
Common Characteristics of Solids ApplicationsTable 2-1:
Common characteristics
Particle size Vapor space
Applications
Wood chip bins Yes Yes Yes Yes Possible
Grain silo - small kernel grains Yes Yes No Yes No
Grain silo - large kernel grains No Yes No No No
Lime stone silo No Yes Yes Possible No
Cement - raw mill silo Yes Yes No Yes No
Cement - finished product silo Yes Yes No Yes No
Coal bin Yes Yes Yes Yes Yes
Saw dust Yes Yes No Yes No
High consistency - pulp stock No No No No Yes
Alumina Yes Yes No Yes No
Salt No Yes Yes No No
Dust or powder Small (<1 in.) Larger (>1 in.) Dust Steam or condensation
Rosemount 5408 and 5408:SIS Level Transmitters 5
Transmitter Overview
2.3 Vessel characteristics
2.3.1 In-tank obstructions
The transmitter should be mounted so that objects such as heating coils, ladders, and
agitators are not in the radar signal path. These objects may cause false echoes resulting in
reduced measurement performance. However, the transmitter has built-in functions
designed to reduce the influence from disturbing objects where such objects cannot be
totally avoided.
Vertical and inclined structures cause minimal effect since the radar signal is scattered
rather than directed back to the antenna.
2.3.2 Tank shape
The shape of the tank bottom affects the measurement signal when the product surface is
close to the tank bottom. The transmitter has built-in functions which optimize
measurement performance for various bottom shapes.
2.4 Application examples
The Rosemount 5408 and 5408:SIS are ideal for level measurements over a broad range of
liquid and solids applications. The transmitters are virtually unaffected by changing
density, temperature, pressure, media dielectric, pH, and viscosity. Non-contacting radar
level is ideal for harsh conditions such as corrosive and sticky media, or when internal tank
obstructions are a limiting factor.
Storage and buffer tanks
The Rosemount 5408 provides accurate and reliable level measurement for both metallic
or non-metallic vessels containing almost any liquid (e.g. oil, gas condensate, water,
chemicals).
Reactors
The Rosemount 5408 is ideal for the most challenging applications, including reactors
where there can be agitation, foaming, condensation as well as high temperatures and
pressures.
6 Reference Manual
Transmitter Overview
Blenders and mixers
The Rosemount 5408 can help you withstand the rigors of blenders and mixing tanks. Easy
to install and commission, it is also unaffected by virtually any fluid property change.
Open atmospheric applications
The Rosemount 5408 measures reliably in open applications, from short range sumps or
ponds to long range dams.
Still pipe and chamber installations
The Rosemount 5408 is an excellent choice for level measurement in tanks with still pipes.
It may also be used in chambers, but guided wave radar is generally the best fit for these
applications. See Section 3.3.8 for installation guidelines.
Rosemount 5408 and 5408:SIS Level Transmitters 7
SI
L 2
Transmitter Overview
Bulk solids
The Rosemount 5408 is the ideal solution for small to medium sized silos with rapid level
changes. The narrow beam avoids internal obstructions while still keeping good level
measurement.
Safety applications
The Rosemount 5408:SIS is the ideal choice for safety functions such as overfill prevention,
level deviation monitoring or dry-run prevention.
2.5 Components of the transmitter
Figure 2-3 shows the different components of the transmitter. There are different antenna
types and sizes available for various applications.
8 Reference Manual
$
%
&
'
(
*
.
*
-
,
)
/
0
+
1
sr
2
3
Transmitter Overview
ComponentsFigure 2-3:
A. Terminal compartment I. Alignment marker (one per side)
B. Transmitter housing (aluminum or stainless steel) J. Threaded process connection (NPT or BSPP
C. Sensor module with signal processing electronics K. Air purge ring (option code PC1 for cone an-
(G))
tenna)
D. External ground screw L. Integrated air purge connection
E. Flanged process connection M. Parabolic antenna
F. Cone antenna N. Parabolic antenna with swivel mount
G. Two cable/conduit entries (½-14 NPT, M20 x 1.5,
or G½)
Optional adapters: eurofast™ and minifast
™
O. Process seal antenna
H. LCD display (optional) P. Tri-Clamp process connection
Rosemount 5408 and 5408:SIS Level Transmitters 9
Transmitter Overview
2.6 System integration
The transmitter is loop-powered, and uses the same two wires for power supply and
output signal. The output is a 4-20 mA analog signal superimposed with a digital HART
signal. The transmitter can be configured for either HART Revision 6 (default) or 7 (option
code HR7). The HART Revision can be switched in field.
By using the optional Rosemount 333 HART Tri-Loop™, the digital HART signal can be
converted into three additional 4-20 mA analog signals. With the HART protocol,
multidrop configuration is possible. In this case, communication is restricted to digital,
since current is fixed to the 4 mA minimum value.
The transmitter can be combined with the Emerson™ Wireless 775 THUM™ Adapter to
wirelessly communicate HART data with IEC 62591 (WirelessHART®) technology. In
addition, the transmitter can be connected to a Rosemount 751 Field Signal Indicator, or it
can be equipped with an LCD display.
The transmitter can easily be configured by using a PC with the Rosemount Radar Master
Plus software (running in the Instrument Inspector™ Application), a Field Communicator,
the AMS Device Manager, or any other Device Descriptor (DD) or Field Device Integration
(FDI) compatible host system.
The Rosemount 5408 and 5408:SIS are compliant with NAMUR NE 107 Field Diagnostics
for standardized device diagnostic information.
10 Reference Manual
$%&
(
)
*
+
'
,
Transmitter Overview
System ArchitectureFigure 2-4:
A. Emerson Wireless 775 THUM Adapter
B. Rosemount 5408
C.
Rosemount 751
D. Field Communicator
E. Approved IS barrier (for Intrinsically Safe installations only)
F. Rosemount 333
G. Host/DCS system
H. HART modem
I. Rosemount Radar Master Plus or AMS Device Manager
Rosemount 5408 and 5408:SIS Level Transmitters 11
Transmitter Overview
12 Reference Manual
3 Mechanical Installation
3.1 Safety messages
Instructions and procedures in this section may require special precautions to ensure the
safety of the personnel performing the operations. Information that potentially raises
safety issues is indicated by a warning symbol ( ). Refer to the following safety messages
before performing an operation preceded by this symbol.
WARNING!
Failure to follow safe installation and servicing guidelines could result in death or serious
injury.
• Make sure the transmitter is installed by qualified personnel and in accordance with
applicable code of practice.
• Use the equipment only as specified in this manual. Failure to do so may impair the
protection provided by the equipment.
• For installations in hazardous locations, the transmitter must be installed according to
the Rosemount 5408 and 5408:SIS Product Certifications document and System Control
Drawing (D7000002-885).
Mechanical Installation
Process leaks could result in death or serious injury.
• Make sure that the transmitter is handled carefully. If the process seal is damaged, gas
might escape from the tank.
Explosions could result in death or serious injury.
• Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
3.2 Confirm approval type
For hazardous locations transmitters labeled with multiple approval types:
Permanently mark the checkbox of the selected approval type(s).
Rosemount 5408 and 5408:SIS Level Transmitters 13
Mechanical Installation
Label with Multiple Approval TypesFigure 3-1:
3.3 Installation considerations
Before installing the transmitter, follow recommendations for mounting position,
sufficient free space, nozzle requirements, etc.
3.3.1 Mounting position
When finding an appropriate location on the tank for the transmitter, the conditions of the
tank must be carefully considered.
Consider the following guidelines when mounting the transmitter:
• For optimal performance, the transmitter should be installed in locations with a
clear and unobstructed view of the product surface.
• The transmitter should be mounted with as few internal structures as possible
within the signal beam, see Section 3.3.6.
• Do not install the transmitter in the center of the tank.
• Do not mount close to or above the inlet stream.
• Multiple Rosemount 5408 and 5408:SIS Level Transmitters can be used in the same
tank without interfering with each other.
14 Reference Manual
/
$
/
%
Mechanical Installation
Recommended Mounting PositionFigure 3-2:
3.3.2 Free space requirements
If the transmitter is mounted close to a wall or other tank obstructions such as heating
coils and ladders, noise might appear in the measurement signal. Therefore the following
minimum clearance, according to Table 3-1, must be maintained.
For easy access to the transmitter, mount it with sufficient service space (see Table 3-2).
Free Space RequirementsFigure 3-3:
Rosemount 5408 and 5408:SIS Level Transmitters 15
Mechanical Installation
Distance to Tank Wall (L)Table 3-1:
Application Minimum Recommended
Liquids 8 in. (200 mm) ½ of tank radius
Solids 8 in. (200 mm) ⅔ of tank radius
Free Space RequirementsTable 3-2:
Description Distance
Service space width (A) 20 in. (500 mm)
Service space height (B) 24 in. (600 mm)
3.3.3 Antenna size
Choose as large antenna diameter as possible. A larger antenna diameter concentrates the
radar beam and ensures maximum antenna gain. Increased antenna gain permits greater
margin for weak surface echoes.
In addition, a larger antenna diameter results in a smaller beam angle and thereby, less
interference from any internal structures in the tank.
3.3.4 Antenna inclination
Ensure the antenna is aligned perpendicular to the product surface (see Figure 3-4). The
parabolic antenna comes with a swivel connection that adjusts for angled tank roofs.
Note that if the surface echo is weak in solids applications, then a small inclination of the
parabolic antenna toward the surface slope may improve the performance.
16 Reference Manual
Max. 1.5°
90°
A
B
90°
Max. 3°
Mechanical Installation
InclinationFigure 3-4:
A. Cone antenna/process seal antenna
Parabolic antenna
B.
3.3.5 Non-metallic tanks
The walls in non-metallic tanks can be invisible to the radar signal, so nearby objects
outside the tank may cause disturbing radar echoes. Wherever possible, the transmitter
should be positioned so that objects close to the tank are kept outside the signal beam.
3.3.6 Beam width and beam angle
The transmitter should be mounted with as few internal structures as possible within the
signal beam. Refer to Table 3-3 for beam angle and Table 3-4 for beam width at different
distances.
Rosemount 5408 and 5408:SIS Level Transmitters 17
'
:
Mechanical Installation
Beam Angle and Beam WidthFigure 3-5:
Beam AngleTable 3-3:
Antenna size Beam angle (α)
2-in. (DN50) cone/process seal 18°
3-in. (DN80) cone/process seal 14°
4-in. (DN100) cone/process seal 10°
8-in. (DN200) parabolic 4.5°
Beam Width, ft. (m)Table 3-4:
Beam width (W)
2-in. cone/ process
Distance (D)
16 (5) 5.2 (1.6) 4.0 (1.2) 2.9 (0.9) 1.3 (0.4)
33 (10) 10.4 (3.2) 8.1 (2.5) 5.7 (1.8) 2.6 (0.8)
49 (15) 15.6 (4.8) 12.1 (3.7) 8.6 (2.6) 3.9 (1.2)
66 (20) 20.8 (6.3) 16.1 (4.9) 11.5 (3.5) 5.2 (1.6)
82 (25) 26.0 (7.9) 20.1 (6.1) 14.3 (4.4) 6.4 (2.0)
98 (30) 31.2 (9.5) 24.2 (7.4) 17.2 (5.3) 7.7 (2.4)
131 (40) 41.6 (12.7) 32.2 (9.8) 23.0 (7.0) 10.3 (3.1)
seal
3-in. cone/ process
seal
4-in. cone/ process
seal Parabolic
18 Reference Manual
3.3.7 Nozzle requirements
H
> 0.4 in. (10 mm)
D
In order to allow the microwaves to propagate undisturbed, the nozzle dimensions should
be kept within the specified limits as given in Table 3-5, Table 3-6, and Table 3-7.
Nozzle requirements for cone antenna
For best performance, the cone antenna should extend at least 0.4 in. (10 mm) below the
nozzle. If required, use the extended cone antenna versions (option code S1 or S2).
However, the antenna can be recessed in smooth nozzles up to 4 ft. (1.2 m). Note that if
the inside of the nozzle has irregularities (e.g. due to bad welding, rust, or deposit), then
use the extend cone antenna.
Mounting of the Cone AntennaFigure 3-6:
Mechanical Installation
Nozzle Requirements for Cone Antenna, in Inches (Millimeters)Table 3-5:
Recommended maximum nozzle height (H)
Antenna size Minimum nozzle diameter (D)
2-in. (DN50) 1.94 (49.3) 5.71 (145) 4.69 (119)
3-in. (DN80) 2.80 (71.0) 5.63 (143) 4.61 (117)
4-in. (DN100) 3.78 (96.0) 6.54 (166) 5.51 (140)
(1) The antennas are sized to fit within schedule 80 or lower schedules.
(2) The values are valid for cone antennas without antenna extension.
(3)
For liquid applications, the cone antenna can be recessed in smooth nozzles up to 4 ft. (1.2 m), but note that the accuracy may be
reduced in the region close to the nozzle.
(1)
Antenna Antenna with air purge ring (code PC1)
(2)(3)
Nozzle requirements for process seal antenna
The antenna can be used on nozzles up to 4 ft. (1.2 m). Disturbing objects inside the nozzle
may impact the measurement, and should therefore be avoided.
Rosemount 5408 and 5408:SIS Level Transmitters 19
+
'
+
'
Mechanical Installation
Mounting of the Process Seal AntennaFigure 3-7:
Nozzle Requirements for Process Seal AntennaTable 3-6:
Recommended maximum nozzle height
(1)
Antenna size Minimum nozzle diameter (D)
(H)
(2)
2-in. (DN50) 1.77 in. (45 mm) 4 ft. (1.2 m)
3-in. (DN80) 2.76 in. (70 mm) 4 ft. (1.2 m)
4-in. (DN100) 2.76 in. (70 mm) 4 ft. (1.2 m)
(1) The antennas are sized to fit within schedule 120 or lower schedules.
For hygienic applications, the nozzle height (H) must not exceed 2
(2)
cleanability. Maximum nozzle height is 5 in. (127 mm).
× nozzle diameter (D) to ensure
Nozzle requirements for parabolic antenna
See Table 3-7 for nozzle height recommendations at different inclination angle.
20 Reference Manual
Loading...