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 or support needs, contact your local Emerson Automation Solutions
/Rosemount Tank Gauging representative.
Spare Parts
Any substitution of non-recognized spare parts may jeopardize safety. Repair, e.g. substitution of
components etc, may also jeopardize safety and is under no circumstances allowed.
Rosemount Tank Radar AB will not take any responsibility for faults, accidents, etc caused by
non-recognized spare parts or any repair which is not made by Rosemount Tank Radar AB.
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 Rosemount Sales
Representative.
Procedures and instructions in this manual may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
warning symbol (). Refer to the safety messages listed at the beginning of each section before
performing an operation preceded by this symbol.
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Use the equipment only as specified in this manual. Failure to do so may impair the protection
provided by the equipment.
Explosions could result in death or serious injury.
Verify that the operating environment of the transmitter is consistent with the appropriate
hazardous locations certifications.
Before connecting a hand held communicator in an explosive atmosphere, make sure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive field
wiring practices.
Do not remove the gauge cover in explosive atmospheres when the circuit is alive.
Electrical shock could cause death or serious injury.
Use extreme caution when making contact with the leads and terminals.
Introduction
May 2020
Introduction
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of
end user’s 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 user’s assets. This is true
for all systems used within the facility.
1
Page 8
Introduction
May 2020
1.2Manual overview
This manual provides installation, configuration, and maintenance information for a Rosemount™
TankMaster
Gauging system with a Rosemount 2410 Tank Hub connected to supported level and temperature
measuring devices.
Typically, a Rosemount Tank Gauging Floating Roof Monitoring system is based on using Rosemount
3308 or Rosemount 5408 level transmitters for roof tilt monitoring. Rosemount 5900C radar gauges is
also an option. In addition to that, level gauges and temperature transmitters are used for standard level
measurements and inventory calculations.
Section 2: Overview provides a brief description of the Rosemount Tank Gauging floating roof
monitoring system and recommended installation procedure.
Section 3: Installation covers installation considerations and mechanical installation.
Section 4: Configuration describes how to configure a Rosemount Tank Gauging floating roof monitoring
system by using the Rosemount TankMaster software package.
Section 5: Operation describes how to operate the floating roof system by using various tank view
functions in the Rosemount TankMaster WinOpi program.
™
Floating Roof Monitoring system. The manual is based on a typical Rosemount Tank
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00809-0500-5100, Rev AC
Section 6: Service and Troubleshooting covers troubleshooting a Rosemount Tank Gauging floating roof
system.
Appendix A: Commissioning Checklist provides a list of installation and configuration actions to check
The floating roof monitoring function in Rosemount™ TankMaster detects whether a roof in a storage
tank is stuck, sinking, floating higher or lower than normal, covered by water or product, or is tilted.
TankMaster uses three to six tilt gauges to track inclination of a floating tank roof. Roof floating high/low
status may be monitored as well. The monitoring function is based on using Rosemount 3308 wireless
level transmitters mounted on the tank roof, or shell mounted free propagation radar level gauges
measuring distance to the tank roof.
Overview
May 2020
If roof inclination exceeds a maximum alarm limit, TankMaster triggers an alarm. Also, if the tank roof
floats higher or lower than normal, it may indicate that the roof is stuck or is about to sink. An alarm is
triggered in TankMaster if the floating roof passes high or low alarm limits.
One or two extra transmitters can be used to detect if the roof drain gets plugged or if there is any
hydrocarbons (product) present on the tank roof. The drain gauge can be either a Rosemount 3308
wireless transmitter providing an online level value of tank roof drain sump, or a wireless vibrating fork
which will act as a high level alarm switch.
Hydrocarbons may be detected by any hydrocarbon detection system which can provide a digital output
signal to be connected with a Rosemount 702 Wireless Discrete Transmitter.
The roof monitoring function is enabled by an option in the Rosemount TankMaster hardware key. Also,
in TankMaster WinSetup a tank must be configured as a Floating Roof Tank in order to be able to use the
floating roof monitoring function.
Level radars are installed at multiple points, spaced evenly around the perimeter of the roof. The
following installation options are available:
2.1.1Drain sump monitoring and hydrocarbon detection
A drain gauge and/or a hydrocarbon gauge can be added to the floating roof monitoring system. The
drain gauge is installed in the drain sump and detects if the drain clogs and water does not run off.
Rosemount 3308 Wireless Guided Wave Radar or Rosemount 2160 Wireless Vibrating Fork can be used
for drain sump monitoring.
Overview
Installed at the floating roof, the hydrocarbon gauge detects potential hydrocarbons on the roof.
Typically, a Rosemount 702 Wireless Discrete Transmitter with Liquid Hydrocarbon Detection is used.
3
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Overview
A
B
C
D
A
A
May 2020
2.2System overview
The floating roof monitoring function is based on using one of two tilt gauge installation options:
shell mounted at the top of the tank
on the tank roof
The shell mounted version is also suitable for fixed roof tanks with inner floating roof.
2.2.1Shell mounted installation at top of tank
Three to six non-contacting level gauges are installed at the top of the tank. The gauges are mounted on
brackets and measure distance to reflector plate on top of the tank roof.
Roof tilt is monitored by comparing distance to the tank roof measured by the different tilt level gauges.
Tank roof floating high/low calculations can be done by comparing distance to floating roof with
distance to the product surface measured by a reference level gauge in a still-pipe.
Figure 2-1. Shell Mounted Tilt Gauges Installed at the Top of the Tank
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00809-0500-5100, Rev AC
A. Tilt gauge mounted on top of tank
B. Reflector
4
C. Reference gauge for product level measurements
D. Floating roof
Overview
Page 11
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A
B
C
D
A
A
00809-0500-5100, Rev AC
2.2.2Installation on tank roof
Three to six tilt gauges are installed on the tank roof. Probes penetrate the tank roof measuring distance
from roof to product surface.
By comparing the distance to the product surface measured by each tilt gauge, both roof tilt and
buoyancy can be monitored.
Wireless Rosemount 3308 tilt gauges communicate with the host system via a repeater at the top of the
tank.
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
warning symbol (). Please refer to the following safety messages before performing an operation
preceded by this symbol.
Installation
May 2020
Failure to follow safe installation and servicing guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Use the equipment only as specified in this manual. Failure to do so may impair the protection provided
by the equipment.
Do not perform any service other than those contained in this manual unless you are qualified.
To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.
Substitution of components may impair Intrinsic Safety.
Installation
9
Page 16
Installation
May 2020
3.2Installation considerations
Verify that the tank roof is designed to allow tilt gauge installation according to requirements.
Ensure that roof mounted tilt gauges are installed properly to allow reliable measurements when the
roof tilts or sinks.
Ensure that shell mounted tilt gauges are installed at a sufficient distance from the highest roof
position.
See “Mechanical installation” on page 11 for instructions on how to install tilt gauges in a Rosemount
Tank Gauging system.
Note
Local site license may be required for compliance to frequency spectrum approval.
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Installation
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A
B
C
A
A
B
D
00809-0500-5100, Rev AC
3.3Mechanical installation
The Floating Roof Monitoring system is based on using a number of tilt gauges which measure the
distance to the tank roof. There is also an option which is based on installing level gauges on the tank
roof in order to monitor the distance between tank roof and product surface. Throughout this manual
we will refer to these two versions:
Shell mounted
Roof mounted
3.3.1Installation on tank shell
This option uses three to six tilt gauges mounted on brackets. It is recommended that tilt gauges are
mounted on a bracket arm and not a wide plate.
In case there is a level gauge for product level measurements as well, it can be used as a reference for tank
roof floating high/low calculations.
Figure 3-1. Floating Roof With Tilt Gauges on Top of Tank
Installation
May 2020
Installation
A. Tilt gauge mounted on top of tank
B. Reflector
C. Reference level gauge
D. Temperature transmitter
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Installation
A
B
D
C
E
E
May 2020
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00809-0500-5100, Rev AC
It is important that each tilt gauge is installed at a position where the roof and reflector can not come
into contact with the antenna.
Ensure that the bracket is long enough to fulfill minimum recommendations for distance from wall to tilt
gauge.
The tilt gauge should be installed at zero degrees vertical inclination as shown in “Inclination” on
page 15.
Figure 3-2. Installation Recommendations
12
A. Tilt gauge
B. Reflector (see “Reflector design” on page 13)
C. Antenna (see “Antenna orientation” on page 14)
D. Minimum distance 800 mm (31.5 in.)
E. Recommended free space 800 mm (31.5 in.). Minimum distance 500 mm (19.7 in.)
Installation
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B
A
C
E
D
F
G
00809-0500-5100, Rev AC
Reflector design
Installation
May 2020
Shell mounted tilt gauges measure the distance to a reflector
(1)
placed on the tank roof. Ensure that the
reflector meets recommended design specifications in order to prevent contamination build-up. The
gap (B) between ridges will ensure that water and snow can drip off the reflector.
Note
It is recommended to regularly make visual inspections to verify that each reflector is placed in the right
position.
Figure 3-3. Reflector for Measuring Distance to Tank Roof
A. 130 mm (5.12 in.)E. 500 mm (19.7 in.)
B. 35 mm (1.4 in.)F. 1200 mm (47.2 in.)
C. 260 mm (10.2 in.)G. 780 mm (30.7 in.)
D. 40 mm (1.6 in.)
1. The reflector is designed for radar gauge using FMCW 10 GHz technology.
Installation
13
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Installation
B
A
C
Center of tank
Min 800 mm
(31.5 in.)
May 2020
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00809-0500-5100, Rev AC
Antenna orientation
Figure 3-4. Antenna Orientation with Rosemount 5900C Transmitter Head as Reference
A. Tilt gauge
B. Reflector (see “Reflector design” on page 13)
C. Tank wall
Figure 3-5. Antenna orientation for Rosemount 5408
90°
External ground screw
Tank wall
Tank wall
14
Installation
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90°
B
A
90°
00809-0500-5100, Rev AC
Inclination
Make sure that the tilt gauge is vertically aligned with the reflector. This will ensure that maximum signal
strength is reflected back to the gauge.
Figure 3-6. Antenna Inclination
Installation
May 2020
Installation
A. Tilt gauge
B. Reflector (see “Reflector design” on page 13)
15
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Installation
A
B
C
D
A
A
May 2020
3.3.2Installation on tank roof
Three to six tilt gauges can be installed on the tank roof allowing tilt and roof floating high/low
measurements. A repeater at the top of the tank ensures proper communication between the wireless
tilt gauges and the gateway.
Note
Make sure that battery power is regularly verified by, for example, using the gateway web interface.
Wireless network communication should be verified according to IEC 62591 (WirelessHART) standards
best practice.
Figure 3-7. Tilt gauges on Tank Roof
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00809-0500-5100, Rev AC
16
A. Tilt gauge mounted on tank roof; Rosemount 3308 Wireless Guided Wave Radar transmitter
B. Reference level gauge for product level measurements
C. Floating roof
D. Repeater
Installation
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D
E
G
C
H
FF
B
00809-0500-5100, Rev AC
Free space
Make sure that there is free space underneath the probe when the roof has landed at the bottom of the
tank.
It is recommended that the nozzle is ventilated for pressure equalization. This will ensure that pressure
build-up is released in case the roof sinks. A flushing ring connection can be used in case the nozzle is not
ventilated.
Figure 3-8. Rosemount 3308 Installation on Tank Roof
Installation
May 2020
Installation
A. Rosemount 3308 tilt gauge
B. Free space
C. Probe
D. Nozzle
E. Pontoon
F. Roof support
G. Liquid
H. Floating roof
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Installation
B
A
F
G
D
C
E
May 2020
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00809-0500-5100, Rev AC
Geometry
It is important that the nozzle is high enough to ensure that the product surface does not reach the level
transmitter’s Blind Zone in case the roof tilts or sinks. Make sure that there is sufficient measuring range
margin as illustrated in Figure 3-9.
See the Rosemount 3308 Series Reference Manual
for more information on Blind Zones.
Normal Distance is a configuration parameter that designates the distance between the upper
reference point and the product surface when the tank roof floats freely and is horizontal with no tilt. A
deviation from Normal Distance indicates that the roof is stuck or sinking.
Prior to putting the Floating Roof Monitoring system in operation, it is recommended to hand dip each
tilt gauge nozzle in order to find the exact Normal Distance. This value will be needed in the Floating
Roof Monitoring setup as described in “Roof mounted” on page 33. The hand dip value allows you to
verify that the tilt gauge is measuring on the actual product surface.
Note
Make sure all roof monitoring alarm limits are configured inside the measuring range.
Figure 3-9. Blind Zone and Measuring Range
18
A. Rosemount 3308 tilt gauge
B. Blind Zone
C. Measuring range
D. Normal distance. This parameter is configured in the Floating Roof Monitoring Setup window (see “Normal
distance” on page 34).
E. Minimum nozzle height=200 mm
F. Floating roof
G. Liquid
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B
MINIMUM 3 TILT GAUGESMAXIMUM 6 TILT GAUGES
00809-0500-5100, Rev AC
3.3.3Tilt gauge position
It is recommended that the tilt gauges are installed in such a way that they are spread out evenly around
the tank roof as illustrated below. You may use a minimum of three tilt gauges. Up to six tilt gauges may
be used if required.
Figure 3-10. Position on Tank Roof
Installation
May 2020
A. Distance to tank wall
B. Tilt gauge
Installation
19
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Installation
May 2020
3.3.4Drain sump monitoring
A Rosemount 3308 Wireless Guided Wave Radar or a Rosemount 2160 Wireless Vibrating Fork can be
used for drain sump monitoring.
Figure 3-11. Drain Sump Gauges
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00809-0500-5100, Rev AC
3.3.5Hydrocarbon detection
A Rosemount 702 Wireless Discrete Transmitter with Liquid Hydrocarbon Detection can be used for
detecting hydrocarbons on the roof.
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
warning symbol (). Please refer to the following safety messages before performing an operation
preceded by this symbol.
Configuration
May 2020
Failure to follow safe installation and servicing guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Use the equipment only as specified in this manual. Failure to do so may impair the protection provided
by the equipment.
Do not perform any service other than those contained in this manual unless you are qualified.
To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.
Substitution of components may impair Intrinsic Safety.
Configuration
21
Page 28
Configuration
May 2020
4.2Introduction
It is important that configuration is properly prepared by providing the appropriate information that is
needed for setting up a Rosemount Tank Gauging system. For example, you will need tank geometry
parameters, antenna type for level gauges, Unit Id and Modbus communication addresses.
Prior to setting up a Rosemount TankMaster Floating Roof Monitoring system, all devices need to
be installed, wired, and configured according to the standard procedure.
The purpose of tank configuration is to associate level gauges and other devices to specific tanks. In a
Floating Roof Monitoring system you will need to configure reference gauge for level measurements as
well as tilt gauges for floating roof monitoring. Drain and Hydrocarbon gauges may also be used and
therefore need to be installed prior to setting up the floating roof monitoring system. Tank configuration
is part of the standard installation procedure for a Rosemount Tank Gauging system.
4.2.1Inventory calculations
Note that for tilt gauge mounting type Shell mounted with Level Reference and Roof mounted you
will need to make sure that inventory calculations are setup. This is required for calculating floating roof
status such as Landed, Partially Landed, and Roof Floating High/Low.
For more information on setting up inventory calculations, see the Rosemount TankMaster WinOpi
Reference Manual
.
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22
Configuration
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A
B
B
00809-0500-5100, Rev AC
4.3Floating roof monitoring setup
Prior to setting up the Floating Roof Monitoring function, make sure that reference level gauge and tilt
gauges are configured according to the standard procedure for Rosemount radar level gauges. Also, in
case drain gauge and/or hydrocarbon gauge will be used, you will have to install these devices too and
ensure that proper communication is established with the host computer system.
It is important that the roof floats horisontally in its normal position when setting up the roof monitoring
function. The roof must float freely and may not be stuck at the tank wall.
4.3.1TankMaster WinSetup workspace
The WinSetup workspace shows installed tanks and devices. A Floating Roof tank with tilt gauges for roof
monitoring will appear as shown in Figure 4-1 below. Tilt gauges, as well as associated devices such as
level gauges and temperature transmitters, will be shown.
Figure 4-1. Associated devices and tilt gauges appear in the WinSetup workspace
Configuration
May 2020
Configuration
A. Tilt gauges
B. Level gauge and temperature transmitter associated with the tank
23
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Configuration
May 2020
4.3.2To enable floating roof monitoring
The Floating Roof Monitoring function requires hardware key option Roof Monitoring Setup.
To enable Floating Roof Monitoring:
1. Open the Rosemount TankMaster WinSetup program.
2. In the WinSetup workspace, select the desired tank icon.
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00809-0500-5100, Rev AC
3. Click the right mouse button on the tank icon and select Floating Roof Monitoring.
4. In the Floating Roof Monitoring Setup window (see Figure 4-2 on page 25), select the Enable... check
box in the upper left-hand corner.
5. Select the mounting type that corresponds to your installation. Available options are:
shell mounted with reference gauge
shell mounted without reference gauge
roof mounted
6. Configure tilt gauges, drain gauge, and hydrocarbon gauge if available.
24
Configuration
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Figure 4-2. Floating Roof Monitoring Setup
Configuration
May 2020
The Floating Roof Monitoring Setup window lets you enable and configure the monitoring system.
Table 4-1. Floating Roof Monitoring Setup
ItemDescription
Shell, with reference level gauge
Mounting type
Tilt gaugeNumber of tilt gauges, tilt gauge source device.
This option includes tilt gauges and a level reference gauge. Prior to setting up the Floating Roof
Monitoring system, the reference gauge needs to be installed and configured according to the standard
procedure for Rosemount radar level gauges.
In case reference gauge tank geometry needs to be adjusted at a later stage, make sure that the floating
roof monitoring setup is updated as well.
For the tilt gauges you should use the same Tank Reference Height (R) as the Reference Level gauge.
Start by using the following parameter settings for the tilt gauges prior to setting up the floating roof
monitoring function.
Table 4-2. Initial Tank Geometry Parameters for Tilt Gauges
ParameterValue
Tank Reference Height (R)Same as for the Level Reference Gauge.
Gauge Reference Distance (G)
Minimum Level Distance (C)0
0
This value will be changed later when setting up the floating roof
monitoring function.
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00809-0500-5100, Rev AC
Calibration Distance0
These parameters may be changed at a later stage.
Figure 4-3 shows geometry settings configuration for the Rosemount 5900C. Basically the same
geometry settings are used for a Rosemount 5408 transmitter.
Figure 4-3. Example of Tank Geometry Settings for Rosemount 5900C
26
Configuration
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Floating Roof Monitoring Setup
Ensure that Floating Roof Monitoring is enabled. Select the Shell-Mounted with Level Reference
option.
Figure 4-4. Mounting Type
Configuration
May 2020
You may use three to six tilt gauges. Prior to setting up the Floating Roof Monitoring function, make sure
that the tilt gauges are properly installed and configured. Check that all tilt gauges are available and
appear in the Source drop-down list.
Since the tilt gauges may be installed at slightly different heights on the tank shell, in most cases the
measured distance to the reflector on the tank roof will differ. Make sure that each tilt gauge is calibrated
to show Difference equal to zero (Reference Distance - Actual Distance = 0), see “Calibration” on
page 28.
Figure 4-5. Tilt Gauge Configuration for Shell Mounted with Level Reference Gauge
Configuration
Number of tilt gauges
Ensure that number of tilt gauges corresponds to the actual number of tilt gauges installed on the tank
roof. You may use up to six tilt gauges.
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Configuration
May 2020
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Source
For each tilt gauge, select the desired gauge from the Source drop-down list.
Verify that the selected tilt gauge corresponds to the actual gauge on the tank roof.
Calibration
Each tilt gauge needs to be calibrated prior to using the Floating Roof Monitoring function. This means
that Difference is set equal to zero (Reference Distance - Actual Distance = 0).
The Reference Level gauge measures distance to the product surface. Each shell-mounted tilt gauge
measures the distance to a reflector placed on the tank roof. Tilt gauges and reference level gauge may
be installed at different heights, in most cases the Actual Distance measured by a tilt gauge will differ
from the Reference Distance measured by the reference gauge. Roof floating and tilt calculations are
based on monitoring the difference between Actual Distance and Reference Distance. As long as the roof
floats horisontally in its normal position, the difference between Actual Distance and Reference Distance
will remain constant. If the roof gets stuck, sinks, or tilts, the difference will change.
Note
Prior to calibrating, ensure that the roof is floating in its normal stable position in the product liquid.
Ensure that it is not stuck on the tank wall. No filling or emptying may occur during the calibration
procedure.
Ensure that all gauges that will be used as tilt gauges are installed and available in the Source drop-down
list. For each tilt gauge, select the desired source device as illustrated in Figure 4-5 on page 27.
Reference distance is the distance from the Gauge Reference Point of the Reference Level Gauge to the
product surface.
Actual distance is the distance from the Tilt Gauge Reference Point to the reflector.
Difference is equal to the difference between Reference distance and Actual distance.
See Figure 4-7 on page 30 for more information on tank geometry.
Tilt gauge configuration
Configure the tilt gauges so that Difference = 0 when the floating roof is horizontal and floats at its
normal position:
1. In the Floating Roof setup window, check the Difference parameter. This value is equal to Reference
Distance - Actual Distance.
2. Click the right mouse button on the tilt gauge icon, and select Properties.
3. Select the Geometry tab.
4. In the Gauge Reference Distance (G) input field, enter the current value for the Difference parameter
which appears in the Floating Roof Monitoring Setup window.
5. Click the Apply button.
6. Wait a couple of minutes to allow the level gauge to settle.
28
7. In the Floating Roof Monitoring Setup window, check that Difference=0. If it is not you may need to
slightly adjust the Reference Distance (G) again.
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An example of how to perform a calibration is illustrated in Figure 4-6.
The Gauge Reference Distance (G) parameter is used as a calibration offset in order to ensure that the
distance to the reflector (C) measured by the tilt gauge equals the distance to the product surface (L)
measured by the reference level gauge. This will compensate for different mounting positions of tilt and
reference level gauges, and for different position of reflector and product surface.
Figure 4-6. Reference Distance (G) Calibration for Tilt Gauge.
Configuration parametersDescription
Configuration
May 2020
Example
Difference= 0.218
Difference= Reference Distance - Actual Distance
Reference Distance (G)
In TankMaster WinSetup, open the Properties/Geometry
tab for the tilt gauge and enter 0.218 for Reference
Distance (G).
Click Apply.
Difference = 0
After a short settling time, the Reference Distance and
Actual Distance should be equal, i.e. Difference = 0.
Configuration
29
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Configuration
G
C
A
R
L
B
H
D
May 2020
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Figure 4-7. Tank Geometry for Tilt Gauge and Reference Level Gauge
A. Tilt gauge.
B. Reference level gauge.
C. Actual distance; distance from tilt gauge to reflector + Reference Distance (G)
D. Reference distance; distance from reference level gauge to product surface.
G. Gauge Reference Distance (G).
H. Gauge Reference Point for the level reference gauge.
L. Reflector.
R. Tank Reference Height (R).
Alarm Setup
See “Alarm setup” on page 37 for information on how to configure alarm limits for roof tilt, roof floating
high/low, and drain sump.
30
Configuration
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4.3.4Shell mounted without level reference
With this option, TankMaster WinSetup supports roof tilt monitoring only. Roof floating high/low can
not be calculated since no reference level gauge is available.
Prior to setting up the Floating Roof Monitoring system, the tilt gauges have to be installed and
configured according to the standard procedure for Rosemount radar level gauges.
Figure 4-8. Mounting Type
Configuration
May 2020
Tilt gauge configuration
You may use three to six tilt gauges. Prior to setting up the Floating Roof Monitoring function, make sure
that the tilt gauges are properly installed and configured. Check that all tilt gauges are available and
appear in the Source drop-down list.
Since the tilt gauges may be installed at slightly different heights on the tank shell, the measured
distance to the reflector on the tank roof will differ.
Figure 4-9. Tilt Gauge Configuration for Shell Mounted without Level Reference
Number of tilt gauges
Ensure that number of tilt gauges corresponds to the actual number of tilt gauges installed on the tank
roof. You may use up to six tilt gauges.
Source
Configuration
For each tilt gauge, select a gauge from the Source drop-down list.
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Configuration
May 2020
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Calibration
Make sure that the tilt gauges are calibrated to show the same distance to the reflector in the Floating
Roof Monitoring Setup window. This distance is presented as the Actual distance.
1. In TankMaster WinSetup, open the Floating Roof Monitoring Setup window.
2. Check that all tilt gauges are up and running and present an Actual Distance.
3. Note Actual Distance for one of the tilt gauges as a reference.
4. In the TankMaster WinSetup workspace, right-click the device icon for the next tilt gauge.
5. Click Properties and select the Geometry tab.
6. Adjust Reference Distance (G) so the tilt gauge presents the same Actual Distance as the first one.
7. Repeat this procedure until all tilt gauges are configured.
Alarm Setup
See “Alarm setup” on page 37 for information on how to configure alarm limits for roof tilt.
32
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4.3.5Roof mounted
Rosemount 3308 transmitters are used as tilt gauges for mounting type Roof Mounted.
Prior to setting up the Floating Roof Monitoring system, the tilt gauges have to be installed and
configured according to the standard procedure for Rosemount radar level gauges.
Note
Ensure that Primary Variable (PV)=Distance for all Rosemount 3308 tilt gauges.
Figure 4-10. Configuration of Roof Mounted Tilt Gauges
Configuration
May 2020
Tilt gauge configuration
You may use three to six tilt gauges. Prior to setting up the Floating Roof Monitoring function, make sure
that the tilt gauges are properly installed and configured. Check that all tilt gauges are available and
appear in the Source drop-down list.
Figure 4-11. Configuration of roof mounted tilt gauges
Number of tilt gauges
Ensure that number of tilt gauges corresponds to the actual number of tilt gauges installed on the tank
roof. You may use up to six tilt gauges.
Source
For each tilt gauge, select a gauge from the Source drop-down list. Tilt gauges appear in the TankMaster
WinSetup workspace as shown in Figure 4-12 below.
Configuration
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Configuration
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00809-0500-5100, Rev AC
Figure 4-12. Floating Roof Tank With Tilt Gauges
Normal distance
In the Normal Distance field, enter the actual distance value shown when the tank roof floats
horizontally in its normal position. This value will be used as a reference value for roof buoyancy
calculations. The Normal Distance value is the actual distance the tilt gauge measures to the product
surface when the roof floats horizontally in its normal position and without being tilted.
Figure 4-13. Calibrating Normal Distance for Roof Mounted Tilt Gauges
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Alarm Setup
See “Alarm setup” on page 37 for information on how to configure alarm limits for roof tilt, roof floating
high/low, and drain sump.
Configuration
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4.3.6Drain gauge
A drain gauge can be configured in the Floating Roof Monitoring system. Typically, a Rosemount 3308
transmitter or a wireless vibrating fork is used. Other suitable devices may be used as well and installed as
generic device in TankMaster WinSetup.
Click the check box to enable drain sump measurements. You may choose one of two types of drain
gauge as source device:
level gauge
On/Off switch
Figure 4-14. Enabling Drain Gauge
Configuration
May 2020
Figure 4-15. Drain Gauge Options
Table 4-3. Drain Gauge Configuration
ParameterDescription
SourceLevel gauge or On/Off switch
InputPV, SV, TV, QV
TypeLevel or On/Off
Configuration
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Configuration
Enable Hydrocarbon Gauge
May 2020
4.3.7Hydrocarbon gauge
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A hydrocarbon detecting transmitter can be configured to detect possible product leakage into the
®
sump water from the tank roof drain. The transmitter must support WirelessHART
in order to be used in
the Floating Roof Monitoring system. Typically, a Rosemount 702 Wireless Discrete Transmitter with
Liquid Hydrocarbon Detection may be used.
1. In the Floating Roof Monitoring Setup window, click the Alarm Settings button:
2. Enter the desired alarm limits. Available options may vary depending on mounting type and whether
drain and hydrocarbon gauges are installed or not.
Configuration
May 2020
Note
When using roof mounted Rosemount 3308 transmitters, ensure that Blind Zones are considered when
specifying alarm limits (see Figure 4-18 on page 38).
Roof Tilt
This alarms is used for setting the maximum roof tilt that may be allowed. Hysteresis and delay can be
used to handle temporary movements that may exceed alarm limit for short periods of time.
Roof Floating
This option is available for Shell-mounted with Level Reference and for Roof Mounted installations.
Drain Sump
For drain gauge of level type, such as the Rosemount 3308 level transmitter, you may specify High alarm,
Hysteresis, and Delay time.
For drain gauge of On/Off type you may specify Delay time.
Alarm limits
The detailed view of the Roof Monitoring window (see “Tank view” on page 39) may be helpful as a tool to
find out how to set proper alarm limits for roof tilt and roof floating.
As the product level moves up and down, the History pane shows data of maximum roof tilt as well as
minimum and maximum deviation of roof floating position. This may give you an idea of the range of
roof tilt and floating positions, and provides useful input for specifying appropriate alarm limits.
Configuration
1. See “Floating roof alarm limits” on page 43 for a description of how to use the detailed view of the
Roof Monitoring window to find proper alarm limits.
2. Ensure that floating roof monitoring alarm limits are within the transmitter’s measuring range as
This chapter provides information about operating a Rosemount™ TankMaster™ Floating Roof Monitoring
system.
Operation
May 2020
5.2Tank view
Tanks setup for Floating Roof Monitoring can be monitored in Rosemount TankMaster WinOpi. The
current roof status is easily accessible:
1. Ensure that Rosemount TankMaster WinOpi is up and running.
2. In the WinOpi workspace, click the right mouse button on the desired tank and select the Floating
Roof Monitoring option.
Operation
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Operation
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Figure 5-1. Floating Roof Monitoring Menu Option
The Floating Roof Monitoring window presents the current status and measurement data. Various status
options are presented in “Roof status” on page 51.
Figure 5-2. Floating Roof Monitoring
40
Pressing the More Details button shows tilt gauge data and historical data in the Roof Monitoring view.
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Figure 5-3. Roof Monitoring Detailed View
Operation
May 2020
Operation
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Operation
Roof Monitoring Alarm Limits
May 2020
5.3Alarm limits
To configure alarm limits for a Rosemount Tank Gauging floating roof monitoring system:
1. Ensure that Rosemount TankMaster WinOpi program is up and running.
2. In the WinOpi workspace, select the desired tank.
3. Click the right mouse button and select Alarm Entry > Alarm Limits.
4. Click the Roof Monitoring Alarm Limits button to configure alarms for tilt, drain, and hydrocarbon
gauges. See Figure 5-5 and “Floating roof alarm limits” on page 43.
Figure 5-4. Alarm Limits Window in TankMaster WinOpi
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Figure 5-5. Alarm Limits for Floating Roof Monitoring
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B
C
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5.3.1Floating roof alarm limits
Since each tank is unique, you will need to find proper floating roof alarm limits individually for each tank
roof. The detailed view of the Roof Monitoring window (see Figure 5-3 on page 41) may be helpful as a
tool to find out how to set proper alarm limits for roof tilt and roof floating.
As the product level moves up and down, the History pane shows maximum roof tilt as well as minimum
and maximum deviation of floating position. This may give you an idea of the range of roof tilt and roof
floating which can serve as useful input for specifying appropriate alarm limits.
Make sure that alarm limits are configured within the transmitter’s measuring range and that the
product surface does not reach the Blind Zone (see “Installation on tank roof” on page 16).
Figure 5-6. Detailed View in Roof Monitoring Window
Operation
May 2020
Operation
A. Graphical view of tank and tilt gauge positions
B. Current tilt gauge data. Value=distance to product surface. Difference=deviation from Normal Distance.
C. Historical tilt data
The Value column shows the current tilt value.
The Difference column shows the deviation between current tilt value and the calibrated value as
specified in the Floating Roof Setup window (see “Floating roof monitoring setup” on page 23).
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Operation
Roof Monitoring Alarm disconnect
May 2020
5.4Alarm disconnect
The Alarm Disconnect window lets you disconnect various tank variable alarms as well as Floating Roof
Monitoring alarms such as Roof Tilt, Roof Floating, Drain Sump, and Hydrocarbon Detection alarms:
1. In the WinOpi workspace, select the desired tank.
2. Click the right mouse button and select Alarm Entry > Alarm Disconnect.
3. Check the alarms to be disconnected.
4. Click Apply to activate the disconnect function. Click OK to close the window.
Figure 5-7. Alarm Limits Window in TankMaster WinOpi
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5.5Roof monitoring group view
In TankMaster WinOpi it is possible to create a specific group view for all tanks with roof monitoring
function enabled. You can design the group view to include any particular floating roof parameters that
you are interested in.
Figure 5-8. Group View for Floating Roof Monitoring
Operation
May 2020
Operation
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Operation
May 2020
5.5.1To create a group view
1. Open the Rosemount TankMaster WinOpi program.
2. Open Tools>Options.
3. Select the Group Templates tab.
4. In the left-hand column, select View Group and click the Clone button.
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46
5. Select the duplicated group template.
6. Click the Edit button. Now the Edit Group Template window appears.
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7. Under Menu Item you may enter a title to appear under the View>Group menu. Under View Title
you may type a title for the new group view.
Operation
May 2020
8. In the Available Parameters pane on the left-hand side, select the desired parameters to add to the
new group view. In the above example Roof Tilt, Roof Floating, Roof Drain, and Hydrocarbons are
selected. You may select several parameters at the same time by using the Shift or the Ctrl button
and clicking the left mouse button. Available parameters for floating roof monitoring are:
9. Click the Select button to move the parameters to the Selected Parameters pane.
Operation
10.Click OK to close the Edit Group Template window.
11.Click OK to close the Options/Group Templates window.
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Operation
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5.6Roof monitoring historical data
The Historical View window lets you view roof floating and roof tilt history.
Prior to viewing historical data you will have to specify which parameters and tanks to sample and start
the actual data sampling (Sample Setup). You will also have to configure how historical data is presented
(View Setup).
Figure 5-9. Historical View
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The Sample Setup button lets you configure what tanks and parameters to be sampled.
The View Setup button lets you configure how tank parameters are displayed in the Historical View
window.
Operation
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A
B
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5.6.1Sample setup
The Sample Setup window lets you specify which parameters to sample for the Historical View. This is a
brief overview of sample setup. See the Rosemount TankMaster WinOpi reference manual
information.
Figure 5-10. Historical View Sample Setup
Operation
May 2020
for more
A. Server Setup
B. All Tanks
C. Tank Setup
Server setup
Allows you to select a TankMaster server.
All tanks
Allows you to select blocks and to configure sample interval and start time for all tanks.
Tank setup
Lets you select tank and blocks to be monitored, and to configure sample interval and start time for
individual tanks. In addition to the standard blocks, the following blocks are available for floating roof
monitoring:
Roof Floating
Roof Tilt
Roof Drain
Operation
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Starting and stopping data sampling
You may start sampling all tanks at once by pressing the Start All button. In case you would like to start
the current tank only, press the Start Tank button.
Figure 5-11. Sampling Started
5.6.2View setup
The View Setup window lets you configure how tank parameters are displayed in the Historical View
window. See the Rosemount TankMaster WinOpi reference manual
up presentation of historical data.
for more information on how to set
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5.7Roof status
The Roof Monitoring window shows the current status of the floating tank roof. Each condition is
presented with an image and text that presents tilt, roof floating high/low, hydrocarbon, and drain
sump.
Table 5-1. Roof Status in Roof Monitoring Window
Operation
May 2020
Roof status
Good. Status OK.
Roof tilt exceeds alarm limits.
Roof might be stuck or one or several pontoons may be
damaged.
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Roof status
Roof is floating lower than configured alarm limit.
There may be product or water on top of the roof, or pontoons
may be damaged.
52
Roof is floating higher than configured alarm limit. The roof
might be stuck.
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Operation
May 2020
Roof status
Product may have leaked to tank roof.
Operation
Drain Sump may be clogged.
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Roof status
Incorrect configuration or invalid data from one or several
transmitters.
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Roof partially landed.
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Operation
May 2020
Roof status
Roof landed.
Operation
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Operation
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5.8Alarm priority
The various status options are displayed in an order that depends on their respective priority as listed in
Table 5-2.
Table 5-2. Alarm Priority for Floating Roof Status
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
warning symbol (). Please refer to the following safety messages before performing an operation
preceded by this symbol.
Failure to follow safe installation and servicing guidelines could result in death or serious injury:
Make sure only qualified personnel perform the installation.
Use the equipment only as specified in this manual. Failure to do so may impair the protection provided
by the equipment.
Do not perform any service other than those contained in this manual unless you are qualified.
May 2020
Explosions could result in death or serious injury:
Verify that the operating environment of the transmitter is consistent with the appropriate hazardous
locations certifications.
Before connecting a Field Communicator in an explosive atmosphere, make sure the instruments in the
loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.
Do not remove the gauge cover in explosive atmospheres when the circuit is alive.
Service and Troubleshooting
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Service and Troubleshooting
May 2020
6.2Troubleshooting
This troubleshooting chart covers issues related to floating roof monitoring. For other issues see the
reference manual for the respective device.
Table 6-1. Troubleshooting Chart
SymptomPossible causeAction
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Alarm is not triggered as
expected
Roof floating low/high
reversed sign
Status “Unknown”
False High/Low alarms for
floating roof
Wireless network is slow and
unstable
Incorrect alarm limit configurationMake sure that alarm limits are properly set. You may
use detailed view in the Roof Monitoring window to use
historical data as input to find the appropriate alarm
limits.
Primary variable (PV) configured as
Level for the Rosemount 3308
Configure Primary Variable to Distance (PV=Distance).
transmitter
Incorrect inventory setup
Communication failure
Invalid level
Configuration error
Incorrect configuration or invalid data
from one or several transmitters.
Check gauge status for tilt gauge, drain gauge, and
hydrocarbon gauge
Check floating roof status in Tank Inventory window
Check Tank Capacity Table (TCT)
Check Average Temperature
Check inventory configuration in Tank Inventory
window
Incorrect tank geometry configuration
for reference level gauge
Measurement updates from tilt gauges
out of sync
A reflector is moved out of correct
position
Make sure that tank geometry is configured with
correct values.
Add alarm delay time
Change alarm limit
Increase update time for tilt gauges
Make sure that each reflector is properly placed under
the tilt gauge.
Normal function. TankMaster does not automatically
Tank roof has landed on its support legs
disable floating roof high alarm when tank roof has
landed.
Hardware error. Wrong transmitter
head is mounted on probe after
maintenance.
Low battery in one or several wireless
devices
One or several wireless devices off line
Wireless field network does not
comply with IEC 62591 (WirelessHART)
best practice
Make sure that the transmitter head is mounted on the
correct probe and roof position.
Verify battery status by e.g. using the gateway web
interface
Verify that all wireless devices (including repeaters) are
online
Verify wireless network communication according to
IEC 62591 (WirelessHART) standards best practice.
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Commissioning Checklist
May 2020
Appendix ACommissioning Checklist
This check list may be used as a tool to ensure that you have walked through all steps of the Floating Roof Monitoring setup.
Table A-1. Checklist
Item
1Verify all mechanical requirements.
2
3
4
5
DescriptionSee section
Make sure that all transmitters are configured:
Communication
Tank geometry
Device specific data
Verify tilt gauge and reference level gauge measurements. Hand dipping is
recommended to ensure that level readings are correct.
Configure alarm limits for floating roof monitoring.
Verify that alarm limits are properly setup relating to maximum roof tilt and
roof floating high/low.
Make sure that maintenance schedule includes verifying wireless network
regularly.
Standard Terms and Conditions of Sale can be found on the Terms and Conditions of
Sale page.
The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount
is a mark of one of the Emerson family of companies. All other marks are the property
of their respective owners.