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.
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
Process Management Sales Representative.
Title Page
May 2016
™
This product is intended to be used as a flowmeter for liquid, gas, or steam applications.
Any use other than for which it was intended may result in serious injury or death.
Title Page
i
Title Page
May 2016
Reference Manual
00809-0100-4004, Rev DC
ii
Title Page
Reference Manual
00809-0100-4004, Rev DC
Section 1Introduction
1.1How to use this manual
This manual provides installation, configuration, operation, troubleshooting, and other
procedures for the use of the Rosemount
ordering information, see the Rosemount 8800D Series Vortex Flowmeter Product Data
Sheet.
Section 2: Configuration contains information on entering and verifying basic configuration
parameters.
Section 3: Installation contains mechanical and electrical installation instructions.
Section 4: Operation contains information on advanced configuration parameters and
Appendix A: Specifications and Reference Data provides reference and specification data.
Appendix B: Product Certifications provides specific information for approval codes.
Appendix C: Electronics Verification provides a short procedure for verification of electronic
output to assist in meeting the quality standards for ISO 9001 certified manufacturing
processes.
Appendix D: HART® Fast Keys provides command tree, and Fast Key Sequence tables for the
Field Communicator when used in conjunction with the Rosemount 8800D.
1.2Safety messages
Procedures and instructions in this manual may require special precautions to ensure the
safety of the personnel performing the operations. Refer to the safety messages, listed at
the beginning of each section, before performing any operations.
1.3System description
The Rosemount 8800D Vortex Flowmeter consists of a meter body and transmitter, and
measures volumetric flow rate by detecting the vortices created by a fluid passing by the
shedder bar.
The meter body is installed in-line with process piping. A sensor is located at the end of the
shedder bar which creates a sine wave signal due to the passing vortices. The transmitter
measures the frequency of the sine wave and converts it into a flowrate.
Process Variables for the Rosemount™ 8800D provides the flowmeter output. When
commissioning a flowmeter, review each process variable, its function and output, and take
corrective action if necessary before using the flowmeter in a process application.
3, 2, 1
2.1.1Primary Variable (PV)
FastKeys
The measured value of the variable mapped to the primary variable. This can be either
Process Temperature (MTA option only) or Flow. Flow variables are available as mass,
volume, corrected volume, or velocity. When bench commissioning, the flow values for
each variable should be zero and the temperature value should be the ambient
temperature.
If the units for the flow or temperature variables are not correct, refer to “Process Variable
Units” on page 4. Use the Process Variable Units function to select the units for your
application.
2, 2, 2, 1
2.1.2Percent of Range
FastKeys
3, 4, 3, 2
The primary variable as a percentage of range provides a gauge as to where the measured
flow rate of the meter is within the configured range of the meter. For example, the range
may be defined as 0 gal/min to 20 gal/min. If the measured flow rate is 10 gal/min, the
percent of range is 50 percent.
2.1.3Analog Output
FastKeys
The analog output variable provides the analog value for the primary variable. The analog
output refers to the industry standard output in the 4–20 mA range. Check the analog
output value against the actual loop reading given by a multi-meter. If it does not match, a
4–20 mA trim is required. See “Analog Trim” on page 51.
Configuration
3, 4, 3, 1
3
Configuration
May 2016
2.1.4Process Variable Units
Reference Manual
00809-0100-4004, Rev DC
FastKeys
Allows for the viewing and configuration of Process Variable Units such as Volume, Velocity,
Mass Flow, Electronics Temperature, Process Density, and Corrected Volume units,
including corrected volume Special Units configuration.
2, 2, 2, 6
Volume Flow
FastKeys
Allows the user to view the volumetric flow rate value.
3, 2, 1
Volume Flow Units
FastKeys
Allows the user to select the volumetric flow units from the available list.
gallons per secondimperial gallons per minute
gallons per minuteimperial gallons per hour
gallons per hourimperial gallons per day
gallons per dayliters per second
cubic feet per secondliters per minute
2, 2, 2, 6, 1
cubic feet per minuteliters per hour
cubic feet per hourliters per day
cubic feet per daycubic meters per second
barrels per secondcubic meters per minute
barrels per minutecubic meters per hour
barrels per hourcubic meters per day
barrels per daymega cubic meters per day
imperial gallons per secondspecial units
4
Configuration
Reference Manual
00809-0100-4004, Rev DC
Corrected Volumetric Flow Units
Configuration
May 2016
FastKeys
Allows the user to select the corrected volumetric flow units from the available list.
gallons per secondimperial gallons per hour
gallons per minuteimperial gallons per day
gallons per hourliters per second
gallons per dayliters per minute
cubic feet per secondliters per hour
standard cubic feet per minuteliters per day
standard cubic feet per hournormal cubic meters per minute
cubic feet per daynormal cubic meters per hour
barrels per secondnormal cubic meters per day
barrels per minutecubic meters per second
barrels per hourcubic meters per minute
barrels per daycubic meters per hour
imperial gallons per secondcubic meters per day
imperial gallons per minutespecial units
2,2,2,6,2
Note
When measuring corrected volumetric flow, a base density and process density must be
provided.
Mass Flow
FastKeys
Allows the user to view the mass flow rate value and units.
3, 2, 1
Configuration
5
Configuration
May 2016
Reference Manual
00809-0100-4004, Rev DC
Mass Flow Units
FastKeys
Allows the user to select the mass flow units from the available list. (1 STon = 2000 lb; 1
MetTon = 1000 kg)
grams per hourpounds per day
grams per minutespecial units
grams per secondshort tons per day
kilograms per dayshort tons per hour
kilograms per hourshort tons per minute
kilograms per minutepounds per second
kilograms per secondtons (metric) per day
pounds per minutetons (metric) per hour
pounds per hourtons (metric) per minute
Note
If you select a Mass Flow Units option, you must enter process density in your configuration.
2, 2, 2, 6, 5
Velocity Flow
FastKeys
Allows the user to view the velocity flow rate value and units.
3, 2, 1
Velocity Flow Units
FastKeys
Allows the user to select the Velocity Flow Units from the available list.
feet per second
meters per second
2, 2, 2, 6, 3
Velocity Measurement Base
FastKeys
Determines if the velocity measurement is based on the mating pipe ID or the meter body
ID. This is important for Reducer
Allows the user to create flow rate units that are not among the standard options.
Configuration of a special unit involves entry of these values: base flow unit, base time unit,
user defined unit and conversion number. Suppose the user wants the Rosemount 8800D to
display flow in beer barrels per minute instead of gallons per minute, and one beer barrel is
equal to 31 gallons.
Base volume unit: gal
Base time unit: min
User defined unit: br
Conversion number:
1
/31.0
See the specific variables listed below for more information on setting special units.
Base Flow Unit
FastKeys
The unit from which the conversion is made. Select one of the Field Communicator defined
unit options:
Provides the time unit from which to calculate the special units. For example, if the special
unit is a volume per minute, select minutes. Choose from the following units:
A user created custom flow unit. The special unit is limited to four characters. The Field
Communicator indicates the special unit with SPCL. The LCD display will display the actual
four character user defined special unit.
Used to relate base units to special units. For a straight conversion of volume units from one
to another, the conversion number is the number of base units in the new unit.
For example, if it is desired to convert from gallons to beer barrels there are 31 gallons in a
beer barrel. The conversion equation is as follows (where beer barrels is the new volume
unit):
Provides the output reading of the totalizer. Its value is the amount of liquid or gas that has
passed through the flowmeter since the totalizer was last reset.
Totalizer Control
FastKeys
Allows the totalizer to be started, stopped, or reset.
Start—Starts the totalizer counting from its current value.
Stop—Interrupts the totalizer count until it is restarted again. This feature is often used
during pipe cleaning or other maintenance operations.
Reset—Returns the totalizer value to zero. If the totalizer was running, it will continue to run
starting at zero.
2, 2, 4, 3, 2
8
Configuration
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00809-0100-4004, Rev DC
Totalizer Config
Configuration
May 2016
FastKeys
Used to configure the flow parameter (volume, mass, velocity, or corrected volume flow)
that will be totaled.
Note
The totalizer value is saved in the non-volatile memory of the electronics every three
seconds. Should power to the transmitter be interrupted, the totalizer value will start at the
last saved value when the power is re-applied.
Note
Changes that affect the density, density ratio, or compensated K-Factor will affect the
totalizer value being calculated. These changes will not cause the existing totalizer value to
be recalculated.
Note
In order to totalize in compensated mass flow or compensated corrected volume flow, for
units with the MTA option only, set pulse output to match the totalizer configuration even if
the pulse output was not ordered.
2, 2, 4, 3, 3
Pulse Frequency
FastKeys
Allows the user to view the pulse output frequency value. To configure the pulse output,
refer to the section on pulse output found on page 54.
3, 2, 5, 3
Shedding Frequency
FastKeys
Allows the user to view the shedding frequency directly off of the sensor.
3, 2, 5, 1
Electronics Temperature
FastKeys
Allows the user to view the Electronics Temperature value and units.
3, 2, 6, 2
Electronics Temperature Units
FastKeys
Allows the user to select the Electronics Temperature Units from the available list.
Allows the user to view the calculated process density value when the transmitter is
configured for temperature compensated steam or temperature compensated liquid
applications.
Process Density Units
FastKeys
Allows the user to configure the Process Density Units from the available list.
Allows the user to view the Process Temperature value when the transmitter has the
temperature sensor option, MTA.
3, 2, 1
Process Temperature Units
FastKeys
Allows the user to configure the units for the process temperature from the available list.
deg C
deg F
deg R
Kelvin
2, 2, 2, 6, 6 (only with MTA)
Temperature Sensor Failure Mode
FastKeys
Allows the user to configure the temperature sensor failure mode. In the event that the
temperature sensor fails, the vortex can go either into an alarm output mode, or continue
to operate normally using the Fixed Process Temperature value. See Fixed Process
Temperature on page 12. This mode is only relevant with the MTA option.
Note
If the Primary Variable is set to Process Temperature and there is an error, the output will
always go to alarm and this setting will be ignored.
2, 2, 1, 3, 1
10
Configuration
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2.2Basic setup
Configuration
May 2016
FastKeys
The Rosemount 8800D must be configured for certain basic variables in order to be
operational. In most cases, all of these variables are pre-configured at the factory.
Configuration may be required if your Rosemount 8800D is not configured or if the
configuration variables need revision. The basic setup wizard will take you through all the
steps required to set up the Rosemount Vortex meter for basic operation.
The remainder of this section contains details about how to enter basic configuration
parameters in order to manually configure the Rosemount 8800D.
2.2.1Tag
FastKeys
The quickest way to identify and distinguish between flowmeters. Flowmeters can be
tagged according to the requirements of your application. The tag may be up to eight
characters long. Long Tag is available for HART
2.2.2Long Tag
FastKeys
Available for HART 7 and allows for up to 32 characters.
2, 1, 1, 1
2, 2, Device Information, 1, 1
2,2,Device Information,1,2
®
7 and allows for up to 32 characters.
2.2.3Process configuration
The flowmeter can be used for liquid or gas/steam applications, but it must be configured
specifically for the application. If the flowmeter is not configured for the proper process,
readings will be inaccurate. Select the appropriate process configuration parameters for
your application:
Transmitter Mode
FastKeys
For units with an integral temperature sensor, the temperature sensor can be activated
here.
Without Temperature Sensor
With Temperature Sensor
Set Process Fluid
FastKeys
Select the fluid type—either Liquid, Gas/Steam, Tcomp Sat Steam, or Tcomp Liquids. Tcomp
Sat Steam and Tcomp Liquids require the MTA Option and provide dynamic density
compensation based on the process temperature reading.
Needed for the electronics to compensate for thermal expansion of the flowmeter as the
process temperature differs from the reference temperature. Process temperature is the
temperature of the liquid or gas in the line during flowmeter operation.
May also be used as a back-up temperature value in the event of a temperature sensor
failure if the MTA option is installed.
2, 2, 1, 1, 4
Fixed Process Density
FastKeys
A Fixed Process Density must be accurately configured if mass flow or corrected volume
flow measurements are used. In mass flow it is used to convert volume flow to mass flow. In
corrected volume flow it is used with the base process density to derive a density ratio
which in turn is used to convert volume flow to corrected volume flow. In temperature
compensated fluids the fixed process density is still required as it is used to convert volume
flow sensor limits to sensor limits for temperature compensated fluids.
Note
If mass or corrected volume units are chosen, you must enter the density of your process
fluid into the software. Be careful to enter the correct density. The mass flow rate and
density ratio are calculated using this user-entered density, and unless the transmitter is in
TComp Sat Steam or TComp Liquids mode where changes in density are automatically
being compensated for, any error in this number will cause error in the measurement.
2, 2, 3, 1
Base Process Density
FastKeys
The density of the fluid at base conditions. This density is used in corrected volume flow
measurement. It is not required for volume flow, mass flow, or velocity flow. The Base
Process Density is used with the Process Density to calculate the Density Ratio. In
temperature compensated fluids, the Process Density is calculated by the transmitter. In
non-temperature compensated fluids the Fixed Process Density is used to calculate a fixed
Density Ratio. Density Ratio is used to convert actual volumetric flow to standard
volumetric flow rates based on the following equation:
2, 2, 3, 2, 1
2.2.4Reference K-factor
FastKeys
A factory calibration number relating the flow through the meter to the shedding frequency
measured by the electronics. Every 8800 meter manufactured by Emerson is run through a
water calibration to determine this value.
2, 2, 1, 2, 1
12
Configuration
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00809-0100-4004, Rev DC
2.2.5Flange Type
Configuration
May 2016
FastKeys
2, 2, 1, 4, 2
Enables the user to specify the type of flange on the flowmeter for later reference. This
variable is preset at the factory but can be changed if necessary.
The pipe ID (inside diameter) of the pipe adjacent to the flowmeter can cause entrance
effects that may alter flowmeter readings. Configuring the actual mating pipe inside
diameter will correct for theses effects. Enter the appropriate value for this variable.
Pipe ID values for schedule 10, 40, and 80 piping are given in Ta bl e 2 - 1 . If the mating pipe ID
is not listed in the table, confirm pipe ID with manufacturer or measure the pipe ID.
Table 2-1. Pipe IDs for Schedule 10, 40, and 80 Piping
Allows the user to select which variables the 8800D will output.
Primary Variable
FastKeys
The variable mapped to the analog output. Selections for the primary variable are Mass
Flow, Volumetric Flow, Corrected Volume Flow, Velocity Flow, and Process Temperature.
Secondary Variable
FastKeys
2, 2, 2, 5
2, 2, 2, 1
2, 2, 2, 2
Schedule 40
inches (mm)
Schedule 80
inches (mm)
Selections for the secondary variable include all variables that can be mapped to the
Primary Variable, and also Shedding Frequency, Pulse Frequency, Calculated Process
Density, and Electronics Temperature. The full list is given below:
Mass Flow
Volumetric Flow
Corrected Volumetric Flow
Direct Shedding Frequency
Pulse Output Frequency
Tot a li ze r
Veloc ity
Process Temperature (MTA only)
Calculated Process Density (MTA only)
Thermocouple Cold Junction Temperature (MTA only)
Electronics Temperature
Signal Strength
Third Variable
FastKeys
2, 2, 2, 3
14
Selections for the Third Variable are identical to those of the Secondary Variable.
Configuration
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00809-0100-4004, Rev DC
Fourth Variable
Configuration
May 2016
FastKeys
Selections for the Fourth Variable are identical to those of the Secondary Variable.
2, 2, 2, 4
2.2.8Process Variable Units
FastKeys
This selection allows the user to set the units of measure for all available process variables.
2, 2, 2, 6
2.2.9Analog Output
FastKeys
Enables you to set the upper and lower range values in order to maximize the resolution of
the analog output. The meter is most accurate when operated within the expected flow
ranges for your application. Setting the range to the limits of expected readings will
maximize flowmeter performance.
The range of expected readings is defined by the Lower Range Value (LRV) and Upper Range
Value (URV). Set the LRV and URV within the limits of flowmeter operation as defined by the
line size and process material for your application. Values set outside that range will not be
accepted.
Primary Variable Upper Range Value (PV URV)
3, 4, 3, 1
FastKeys
This is the 20 mA set point for the meter.
2, 2, 4, 1, 3
Primary Variable Lower Range Value (PV LRV)
FastKeys
This is the 4 mA set point for the meter, and is typically set to 0 when the primary variable is
a flow variable.
2, 2, 4, 1, 4
Configuration
15
Configuration
May 2016
2.2.10Damping
Reference Manual
00809-0100-4004, Rev DC
FastKeys
Damping changes the response time of the flowmeter to smooth variations in output
readings caused by rapid changes in input. Damping is applied to the Analog Output, Primary Varia ble, Percent of Range, and Vortex Frequency.
The default damping value is 2.0 seconds. This can be configured to any value between 0.2
to 255 seconds when PV is a flow variable or 0.4 to 32 seconds when PV is Process
Temperature. Determine the appropriate damping setting based on the necessary response
time, signal stability, and other requirements of the loop dynamics in your system.
Note
If the vortex shedding frequency is slower than the damping value selected, no damping is
applied. Process Temperature damping can be modified when PV is set to Process
Tem p er at ur e.
2, 1, 4, 1
2.2.11Optimize DSP (Digital Signal Processing)
FastKeys
A function that can be used to optimize the range of the flowmeter based on the density of
the fluid. The electronics uses process density to calculate the minimum measurable flow
rate, while retaining at least a 4:1 signal to the trigger level ratio. This function will also reset
all of the filters to optimize the flowmeter performance over the new range. If the
configuration of the device has changed, this method should be executed to ensure the
signal processing parameters are set to their optimum settings. For dynamic process
densities, select a density value that is lower than the lowest expected flowing density.
This section provides installation instructions for the Rosemount
Flowmeter. Dimensional drawings for each Rosemount 8800D variation and mounting
configuration are included in Appendix A: Specifications and Reference Data.
The options available for the Rosemount 8800D Flowmeter are also described in this
section. The numbers in parentheses refer to the codes used to order each option.
3.1Safety messages
Instructions and procedures in this section may require special precautions to ensure the
safety of the personnel performing the operations. Please refer to the following safety
messages before performing any operation in this section.
Explosions could result in death or serious injury.
Do not remove the transmitter cover in explosive atmospheres when the circuit is
alive.
Before connecting a HART
sure the instruments in the loop are installed in accordance with intrinsically safe or
non-incendive field wiring practices.
Verify the operating atmosphere of the transmitter is consistent with the appropriate
hazardous locations certifications.
Both transmitter covers must be fully engaged to meet explosion-proof requirements.
™
8800D Vortex
®
-based communicator in an explosive atmosphere, make
Installation
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
21
Installation
Is
Configuration
OK?
Mount
Flowmeter
Wire
Flowmeter
Power
Flowmeter
DONE
Mount
Conduit
START HERE
FIELD
INSTALL
CONFIGURE
Ta g
Process Config
Transmitter Mode
Process Fluid
Fixed Process Temp.
Base Density
(Std. or Normal Volumetric
Flow Units Only)
Fixed Process Density
(Mass or Corrected Volume
Flow Units Only)
No
Bench
Commissioning?
Review
Configuration
Yes
No
Yes
Did you
Configure on
Bench?
No
Yes
Configure if
Necessary
Go to
Review
Configuration
A
A
A
Go to
B
Go to
B
Reference
K-Factor
Mating Pipe ID
Variable Mapping
Flange Type
PV Unit
Range Values
PV Damping
Auto Adjust Filter
Using
LCD Display?
Yes
Configure
Local
Display
Using Pulse
Output?
No
Using
Tot a li ze r ?
Meter
Installed?
Configure
Pulse
Output
Yes
No
Configure
Tot a li ze r
Yes
No
Yes
No
DONE
May 2016
Figure 3-1. Installation Flowchart
Reference Manual
00809-0100-4004, Rev DC
22
Installation
Reference Manual
00809-0100-4004, Rev DC
3.2Commissioning
Commission the Rosemount 8800D before putting it into operation. This ensures proper
configuration and operation of the meter. It also enables you to check hardware settings,
test the flowmeter electronics, verify flowmeter configuration data, and check output
variables. Any problems can be corrected – or configuration settings changed – before
going out into the installation environment. To commission on the bench, connect the Field
Communicator or AMS
loop in accordance with the specifications for your device.
Before you install a flowmeter in any application, you must consider flowmeter sizing (the
line size) and location. Choose the correct flowmeter size for an application to increase
rangeability and minimize pressure drop and cavitation. Proper location of the flowmeter
can ensure a clean and accurate signal. Follow the installation instructions carefully to
reduce start-up delays, ensure ease of maintenance, and ensure optimum performance.
3.2.1Flowmeter sizing
Correct meter sizing is important for flowmeter performance. The Rosemount 8800D is
capable of measuring flow within the limitations described in Appendix A: Specifications
and Reference Data.
™
Device Manager (or other communications device) to the signal
Installation
May 2016
To determine the correct flowmeter size for an application, process conditions must be
within the stated requirements for Reynolds number and velocity. See Appendix A:
Specifications and Reference Data for sizing data.
Contact your local Rosemount Inc. sales representative to obtain a copy of Instrument
™
To ol ki t
vortex sizing module will calculate valid flowmeter sizes based on user-supplied application
information.
which contains a sizing module for the Rosemount 8800D Vortex Flowmeter. The
3.2.2Flowmeter orientation
Design process piping so the meter body will remain full, with no entrapped air. Allow
enough straight pipe both upstream and downstream of the meter body to ensure a
nonskewed, symmetrical flow profile. Install valves downstream of the meter when
possible.
Vertical installation
Vertical, upward, installation allows upward process liquid flow and is generally preferred.
Upward flow ensures that the meter body always remains full and that any solids in the fluid
are evenly distributed.
The vortex meter can be mounted in the vertical down position when measuring gas or
steam flows. This type of application should be strongly discouraged for liquid flows,
although it can be done with proper piping design.
Installation
Note
To ensure the meter body remains full, avoid downward vertical liquid flows where back
pressure is inadequate.
23
Installation
A
B
May 2016
Reference Manual
00809-0100-4004, Rev DC
Horizontal installation
For horizontal installation, the preferred orientation is to have the electronics installed to
the side of the pipe. In liquid applications, this ensures any entrained air or solids do not
strike the shedder bar and disrupt the shedding frequency. In gas or steam applications, this
ensures any entrained liquid (such as condensate) or solids do not strike the shedder bar
and disrupt the shedding frequency.
High-temperature installations
Install the meter body so the electronics are positioned to the side of the pipe or below the
pipe as shown in Figure 3-2. Insulation may be required around the pipe to maintain an
electronics temperature below 185 °F (85 °C). See Figure 3-10 on page 34for special
insulation considerations.
Figure 3-2. Examples of High-Temperature Installations
A. Preferred installation—The meter body installed with the electronics to the side of the pipe.
B. Acceptable installation—The meter body installed with the electronics below the pipe.
Steam installations
For steam applications, avoid installations such as the one shown in Figure 3-3. Such
installations may cause a water-hammer condition at start-up due to trapped condensate.
The high force from the water hammer can over stress the sensing mechanism and cause
permanent damage to the sensor.
Figure 3-3. Avoid this Type of Installation for Steam Applications
24
Installation
Reference Manual
A
C
B
D
00809-0100-4004, Rev DC
Upstream/downstream piping
The vortex meter may be installed with a minimum of ten diameters (D) of straight pipe
length upstream and five diameters (D) of straight pipe length downstream.
To achieve reference accuracy, straight pipe lengths of 35D upstream and 5D downstream
are required. The value of the K-factor may shift up to 0.5% when the upstream straight
pipe length is between 10D and 35D. Please see Technical Data Sheet (00816-0100-3250)
on Installation Effects for optional K-factor corrections. This effect can be corrected for
using the “Meter Factor” on page 53.
Pressure and temperature transmitter location
When using pressure and temperature transmitters in conjunction with the Rosemount
8800D for compensated mass flows, install the transmitter(s) downstream of the Vortex
Flowmeter. See Figure 3-4.
Figure 3-4. Pressure and Temperature Transmitter Location
Installation
May 2016
A. Pressure transmitter
B. Four straight pipe diameters downstream
C. Temperature transmitter
D. Six straight pipe diameters downstream
Note
The MTA option can be purchased for an integral temperature measurement and mass flow
temperature compensation for saturated steam and liquids.
3.2.3Wetted material selection
Ensure that the process fluid is compatible with the meter body wetted materials when
specifying the Rosemount 8800D. Corrosion will shorten the life of the meter body. Consult
recognized sources of corrosion data or contact your Emerson Flow Sales Representative for
more information.
Note
If Positive Material Identification (PMI) is required, perform test on a machined surface.
Installation
25
Installation
May 2016
3.2.4Environmental considerations
Avoid excessive heat and vibration to ensure maximum flowmeter life. Typical problem
areas include high-vibration lines with integrally mounted electronics, warm-climate
installations in direct sunlight, and outdoor installations in cold climates.
Although the signal conditioning functions reduce susceptibility to extraneous noise, some
environments are more suitable than others. Avoid placing the flowmeter or its wiring close to
devices that produce high intensity electromagnetic and electrostatic fields. Such devices
include electric welding equipment, large electric motors and transformers, and
communication transmitters.
3.3Hazardous locations
The Rosemount 8800D has an explosion-proof housing and circuitry suitable for intrinsically
safe and non-incendive operation. Individual transmitters are clearly marked with a tag
indicating the certifications they carry. See Appendix B: Product Certifications for specific
approval categories.
Reference Manual
00809-0100-4004, Rev DC
3.4Hardware configuration
The hardware jumpers on the Rosemount 8800D enable you to set the alarm and security.
(See Figure 3-5.) To access the jumpers, remove the electronics housing cover from the
electronics end (opposite of the terminal blocks) of the Rosemount 8800D. If your
Rosemount 8800D includes an LCD option, the alarm and security jumpers are found on the
face of the LCD indicator. (See Figure 3-6 on page 28.)
Note
If you will be changing configuration variables frequently, it may be useful to leave the
security lockout jumper in the OFF position to avoid exposing the flowmeter electronics to
the plant environment.
Set these jumpers during the commissioning stage to avoid exposing the electronics to the
plant environment.
26
Installation
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00809-0100-4004, Rev DC
Figure 3-5. Alarm and Security Jumpers
Alarm
Installation
May 2016
As part of normal operations, the Rosemount 8800D continuously runs a self-diagnostic
routine. If the routine detects an internal failure in the electronics, flowmeter output is
driven to a low or high alarm level, depending on the position of the failure mode jumper.
The failure mode jumper is labeled ALARM and is set at the factory per the CDS
(Configuration Data Sheet); the default setting is HI.
Security
You can protect the configuration data with the security lockout jumper. With the security
lockout jumper ON, any configuration changes attempted on the electronics are
disallowed. You can still access and review any of the operating parameters and scroll
through the available parameters, but no actual changes will be permitted. The security
lockout jumper is labeled SECURITY and is set at the factory per the CDS; the default setting
is OFF.
3.4.1Failure mode vs. saturation output values
The failure mode alarm output levels differ from the output values that occur when the
operating flow is outside the range points. When the operating flow is outside the range
points, the analog output continues to track the operating flow until reaching the
saturation value listed below; the output does not exceed the listed saturation value
regardless of the operating flow. For example, with standard alarm and saturation levels and
flows outside the 4—20 mA range points, the output saturates at 3.9 mA or 20.8 mA. When
the transmitter diagnostics detect a failure, the analog output is set to a specific alarm value
that differs from the saturation value to allow for proper troubleshooting. The saturation
and alarm levels are software selectable between Rosemount Standard and NAMUR levels.
Installation
27
Installation
ALARM
LO
HI
OFF
ON
SECURITY
May 2016
Table 3-1. Analog Output: Standard alarm values vs. Saturation Values
Level4—20 mA saturation value4—20 mA alarm value
Low 3.9 mA< 3.75 mA
High20.8 mA≥ 21.75 mA
Table 3-2. Analog Output: NAMUR-Compliant Alarm Values vs. Saturation Values
Level4—20 mA saturation value4—20 mA alarm value
Low 3.8 mA< 3.6 mA
High20.5 mA≥ 22.6 mA
3.4.2LCD indicator option
If your electronics are equipped with the LCD indicator (Option M5), the ALARM and
SECURITY jumpers are located on the face of the indicator as shown in Figure 3-6.
Figure 3-6. LCD Indicator Alarm and Security Jumpers
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3.5Meter body installation tasks
The installation tasks include detailed mechanical and electrical installation procedures.
3.5.1Handling
28
Handle all parts carefully to prevent damage. Whenever possible, transport the system to
the installation site in the original shipping containers. Keep the shipping plugs in the
conduit connections until you are ready to connect and seal them.
Note
Do not lift the flowmeter by the transmitter. Lift the meter by the meter body. Lifting
supports can be tied around the meter body as shown in Figure 3-7.
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Figure 3-7. Lifting Supports
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May 2016
3.5.2Flow direction
Mount the meter body so the FORWARD end of the flow arrow, shown on the meter body,
points in the direction of the flow in the pipe.
3.5.3Gaskets
The Rosemount 8800D requires gaskets supplied by the user. Be sure to select gasket
material that is compatible with the process fluid and pressure ratings of the specific
installation.
Note
Ensure the inside diameter of the gasket is larger than the inside diameter of the flowmeter
and adjacent piping. If gasket material extends into the flow stream, it will disturb the flow
and cause inaccurate measurements.
3.5.4Flange bolts
Install the Rosemount 8800D Flowmeter between two conventional pipe flanges, as shown
in Figure 3-8 on page 32 and Figure 3-9 on page 32. Tab le 3 - 3, 3-4, and 3-5 list the
recommended minimum stud bolt lengths for wafer-style meter body size and different
flange ratings.
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29
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00809-0100-4004, Rev DC
Table 3-3. Minimum Recommended Stud Bolt Lengths for Wafer Installation with
Center the wafer-style meter body inside diameter with respect to the inside diameter of
the adjoining upstream and downstream piping. This will ensure the flowmeter achieves its
specified accuracy.
Alignment rings are provided with each wafer-style meter body for centering purposes.
Follow these steps to align the meter body for installation. Refer to Figure 3-8 on page 32.
1.Place the alignment rings over each end of the meter body.
2.Insert the studs for the bottom side of the meter body between the pipe flanges.
3.Place the meter body (with alignment rings) between the flanges. Make sure the
alignment rings are properly placed onto the studs. Align the studs with the
markings on the ring that correspond to the flange you are using. If a spacer is used,
see Spacers and Ta bl e 3 - 6 below.
Note
Be sure to align the flowmeter so the electronics are accessible, the conduits drain, and the
flowmeter is not subject to direct heat.
Installation
May 2016
4.Place the remaining studs between the pipe flanges.
5.Tighten the nuts in the sequence shown in Figure 3-11 on page 35.
6.Check for leaks at the flanges after tightening the flange bolts.
Note
The required bolt load for sealing the gasket joint is affected by several factors, including
operating pressure and gasket material, width, and condition. A number of factors also
affect the actual bolt load resulting from a measured torque, including condition of bolt
threads, friction between the nut head and the flange, and parallelism of the flanges. Due to
these application-dependent factors, the required torque for each application may be
different. Follow the guidelines outlined in ASME PCC-1 for proper bolt tightening. Make
sure the flowmeter is centered between flanges of the same nominal size as the flowmeter.
Spacers
Spacers are available with the Rosemount 8800D to maintain the Rosemount 8800A
dimensions. If a spacer is used, it should be downstream of the meter body. The spacer kit
comes with an alignment ring for ease of installation. Gaskets should be placed on each side
of the spacer.
Figure 3-8. Wafer-Style Flowmeter Installation with Alignment Rings
A. Installation studs and nuts (supplied by customer)
B. Alignment rings
C. Spacer (for Rosemount 8800D to maintain Rosemount 8800A dimensions)
D. Gaskets (supplied by customer)
Figure 3-9. Flanged-Style Flowmeter Installation
A. Installation bolts and nuts (supplied by customer)
B. Gaskets (supplied by customer)
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3.5.6Flanged-style flowmeter mounting
Physical mounting of a flanged-style flowmeter is similar to installing a typical section of
pipe. Conventional tools, equipment, and accessories (such as bolts and gaskets) are
required. Tighten the nuts following the sequence shown in Figure 3-11.
Note
The required bolt load for sealing the gasket joint is affected by several factors, including
operating pressure and gasket material, width, and condition. A number of factors also
affect the actual bolt load resulting from a measured torque, including condition of bolt
threads, friction between the nut head and the flange, and parallelism of the flanges. Due to
these application-dependent factors, the required torque for each application may be
different. Follow the guidelines outlined in ASME PCC-1 for proper bolt tightening. Make
sure the flowmeter is centered between flanges of the same nominal size as the flowmeter.
Insert integral temperature sensor (MTA option only)
The MTA option equips the vortex meter with a Type N Thermocouple. The transmitter uses
the process temperature measurement to compensate for changes in fluid density.
Saturated steam mass flow rate, liquid mass flow, and corrected volumetric flow can all take
advantage of the dynamic density corrections for increased accuracy.
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May 2016
The temperature sensor is coiled and attached to the electronics bracket. Remove the
Styrofoam around sensor and insert temperature sensor into the hole at the bottom of the
meter body. There is no need to remove the opposite end from the electronics. Insert
temperature sensor into the hole in the bottom of meter body until it reaches the bottom of
the hole. Hold it in place and tighten bolt with
turns past finger tight.
The meter body should be insulated to achieve stated temperature accuracy. Insulation
should extend to the end of the bolt on the bottom of the meter body and should leave at
least 1-in. (25 mm) of clearance around the electronics bracket. The electronics bracket and
electronics housing should not be insulated. See Figure 3-10.
Do not loosen or remove the temperature connection at the electronics when the housing
integrity needs to be maintained.
1
/2 inch open end wrench until it reaches 3/4
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33
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B
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00809-0100-4004, Rev DC
Figure 3-10. RED Area for Both Integral and Remote Electronics Connection Types
A. Do not insulate within the RED area for both integral and remote electronics connection types.
B. 1 in. (25 mm) minimum
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Figure 3-11. Flange Bolt Torquing Sequence
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May 2016
3.5.7Flowmeter grounding
Grounding is not required in typical vortex applications; however, a proper ground will
eliminate possible noise pickup by the electronics. Grounding straps may be used to ensure
that the meter is grounded to the process piping. If you are using the transient protection
option (T1), grounding straps are required to provide a proper low impedance ground.
Note
Properly ground flow meter body and transmitter per the local code.
To use grounding straps, secure one end of the grounding strap to the bolt extending from
the side of the meter body and attach the other end of each grounding strap to a suitable
ground.
3.6Electronics considerations
Both integral and remote mounted electronics require input power at the electronics. For
remote mount installations, mount the electronics against a flat surface or on a pipe that is
up to two inches in diameter.
Remote mounting hardware includes an L bracket that is stainless steel and one stainless
steel u-bolt. See Appendix A: Specifications and Reference Data for dimensional
information.
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35
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A
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3.6.1High-temperature installations
Install the meter body so the electronics are positioned to the side of or below the pipe as
shown in Figure 3-2 on page 24. Insulation may be required around the pipe to maintain an
ambient transmitter temperature below 185 °F (85 °C) or the more restrictive temperature
ratings marked on hazardous locations tags.
3.6.2Conduit connections
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00809-0100-4004, Rev DC
The electronics housing has two ports for
Unless marked otherwise conduit entries in the housing are
made in a conventional manner in accordance with local or plant electrical codes. Be sure to
properly seal unused ports to prevent moisture or other contamination from entering the
terminal block compartment of the electronics housing. Additional conduit entry types are
available via adapters.
Note
In some applications it may be necessary to install conduit seals and arrange for conduits to
drain to prevent moisture from entering the wiring compartment. Conduit plugs should not
be removed when circuit is live or in explosive atmosphere.
3.6.3High-point installation
Prevent condensation in any conduit from flowing into the housing by mounting the
flowmeter at a high point in the conduit run. If the flowmeter is mounted at a low point in
the conduit run, the terminal compartment could fill with fluid.
If the conduit originates above the flowmeter, route conduit below the flowmeter before
entry. In some cases a drain seal may need to be installed.
Figure 3-12. Proper Conduit Installation with Rosemount 8800D
1
/2–14 NPT or M20×1.5 conduit connections.
1
/2 NPT. These connections are
A. Conduit line
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3.6.4Cable gland
If you are using cable glands instead of conduit, follow the cable gland manufacturer’s
instructions for preparation and make the connections in a conventional manner in accordance
with local or plant electrical codes. Be sure to properly seal unused ports to prevent moisture or
other contamination from entering the terminal block compartment of the electronics housing.
3.6.5Grounding the transmitter case
The transmitter case should always be grounded in accordance with national and local
electrical codes. The most effective transmitter case grounding method is direct
connection to earth ground with minimal impedance. Methods for grounding the
transmitter case include:
Internal Ground Connection: The Internal Ground Connection screw is inside the
FIELD TERMINALS side of the electronics housing. This screw is identified by a
ground symbol (), and is standard on all Rosemount 8800D transmitters.
External Ground Assembly: This assembly is located on the outside of the
electronics housing and is included with the optional transient protection terminal
block (Option Code T1). The External Ground Assembly can also be ordered with
the transmitter (Option Code V5) and is automatically included with certain
hazardous area approvals.
Installation
May 2016
Note
Grounding the transmitter case using the threaded conduit connection may not provide a
sufficient ground. The transient protection terminal block (Option Code T1) does not
provide transient protection unless the transmitter case is properly grounded. See
“Transient protection” on page 46 for transient terminal block grounding. Use the above
guidelines to ground the transmitter case. Do not run the transient protection ground wire
with signal wiring as the ground wire may carry excessive electric current if a lightning strike
occurs.
3.6.6Wiring procedure
The signal terminals are located in a compartment of the electronics housing separate from
the flowmeter electronics. Connections for a HART-based communicator and an electric
current test connection are above the signal terminals. Figure 3-13 on page 38 illustrates
the power supply load limitations for the flowmeter.
Note
A power disconnect is required to remove power from the transmitter for maintenance,
removal, and replacement.
Power supply
The DC power supply should provide power with less than two percent ripple. The total
resistance load is the sum of the resistance of the signal wiring and the load resistance of
the controller, indicator, and related pieces. Note that the resistance of intrinsic safety
barriers, if used, must be included.
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37
Installation
1500
1000
500
0
42
10.8
R
max
= 41.7(Vps – 10.8)
V
ps
= power supply voltage (volts)
R
max
= maximum loop resistance (ohms)
Power Supply (volts)
Load (Ohms)
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00809-0100-4004, Rev DC
Note
A minimum loop resistance of 250 ohms is required to exchange information with a
HART-based communicator. With 250 ohms of loop resistance, the flowmeter will require a
minimum power supply voltage (Vps) of 16.8 volts to output 24 mA.
Note
If a Smart Wireless THUM
exchange information via IEC 62591 (WirelessHART
resistance of 250 ohms is required. In addition, a minimum power supply voltage (V
™
Adapter is being used with the Rosemount 8800D flowmeter to
®
Protocol) technology, a minimum loop
) of
ps
19.3 volts will be required to output 24 mA.
Note
If a single power supply is used to power more than one Rosemount 8800D Flowmeter, the
power supply used and circuitry common to the flowmeters should not have more than 20
ohms of impedance at 1200 Hz. See Figure 3-13 and Tabl e 3-7 .
Figure 3-13. Power Supply Load Limitations
38
Table 3-7. Resistance Based on Wire Gauge
Gauge number
A.W.G.
142.5
164.0
186.4
2010
2216
2426
Ohms per 1,000 ft (305 m) at 68°F (20°C) equivalent
Analog output
The flowmeter provides a 4–20 mA dc isolated electric current output, linear with the flow
rate.
To make connections, remove the FIELD TERMINALS side cover of the electronics housing.
All power to the electronics is supplied over the 4–20 mA signal wiring. Connect the wires as
shown in Figure 3-16 on page 41.
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00809-0100-4004, Rev DC
Note
Twisted pairs are required to minimize noise pickup in the 4–20 mA signal and digital
communication signal. For high EMI/RFI environments, shielded signal wire is required and
recommended in all other installations. To ensure communication, wiring should be 24
AWG or larger and not exceed 5,000 ft (1500 m).
Pulse output
Note
Remember when using the pulse output, all power to the electronics is still supplied over
the 4–20 mA signal wiring.
The flowmeter provides an isolated transistor switch-closure frequency output signal
proportional to flow, as shown in Figure 3-14 on page 39. The frequency limits are as
follows:
Maximum Frequency = 10000 Hz
Minimum Frequency = 0.0000035 Hz (1 pulse/79 hours)
Duty Cycle = 50%
External Supply Voltage (V
Load Resistance (R
Max Switching Current = 75 mA >= V
Switch Closure: Transistor, open collector
Open contact < 50
Close contact < 20
): 5 to 30 V dc
s
): 100 Ω to 100 kΩ
L
μA leakage
Ω
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May 2016
S/RL
The output may drive an externally powered electromechanical or electronic totalizer, or
may serve as a direct input to a control element.
To connect the wires, remove the FIELD TERMINALS side cover of the electronics housing.
Connect the wires as shown in Figure 3-17 on page 41.
Figure 3-14. Example: The Pulse Output will Maintain a 50 Percent Duty Cycle for all
Frequencies
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B
C
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Note
When using pulse output, be sure to follow these precautions:
Shielded twisted pair is required when the pulse output and 4–20 mA output are
run in the same conduit or cable trays. Shielded wire will also reduce false
triggering caused by noise pickup. Wiring should be 24 AWG or larger and not
exceed 5,000 ft. (1500 m).
Do not connect the powered signal wiring to the test terminals. Power could
damage the test diode in the test connection.
Do not run signal wiring in conduit or open trays with power wiring, or near heavy
electrical equipment. If needed, ground signal wiring at any one point on the signal
loop, such as the negative terminal of the power supply. The electronics housing is
grounded to the meter body.
If the flowmeter is protected by the optional transient protector, you must provide
a high-current ground connection from the electronics housing to earth ground.
Also, tighten the housing ground screw in the bottom of the terminal block to
provide a good ground connection.
Figure 3-15. Transient Terminal Block
A. Housing ground screw
B. Captive screws
C. Transient terminal block ground tab
Plug and seal all unused conduit connections on the electronics housing to avoid
moisture accumulation in the terminal side of the housing.
If the connections are not sealed, mount the flowmeter with the conduit entry
positioned downward for drainage. Install wiring with a drip loop, making sure the
bottom of the drip loop is lower than the conduit connections or the electronics
housing.
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+
-
R
L
≥ 250 Ω
A
+
-
A
R
L
>250 Ω
−
B
+
-
100 Ω < R
L
< 100 kΩ
−−
00809-0100-4004, Rev DC
Figure 3-16. 4-20 mA Wiring
A. Power supply
Figure 3-17. 4–20 mA and Pulse Wiring with Electronic Totalizer/Counter
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May 2016
A. Power supply
B. Power supply with counter
3.6.7Remote electronics
If you order one of the remote electronics options (options R10, R20, R30, R33, R50, or
Rxx), the flowmeter assembly will be shipped in two parts:
1.The meter body with an adapter installed in the support tube and an
interconnecting coaxial cable attached to it.
2.The electronics housing installed on a mounting bracket.
If you order the armored remote electronics options, follow the same instructions as for the
standard remote cable connection with the exception that the cable may not need to be run
through conduit. Armored includes the glands.
Mounting
Mount the meter body in the process flow line as described earlier in this section. Mount the
bracket and electronics housing in the desired location. The housing can be repositioned on
the bracket to facilitate field wiring and conduit routing.
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41
Installation
Note: Consult factory for SST installation
O
M
L
J
K
N
I
I
H
G
F
E
C
A
D
B
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Cable connections
Refer to Figure 3-18 and the following instructions to connect the loose end of the coaxial
cable to the electronics housing. (See “Remote electronics procedure” on page 88 if connecting/disconnecting the meter adapter to the meter body.)
Figure 3-18. Remote Electronics Installation
42
A. Meter body
B. Support tube
C. Sensor cable nut
D. Nut
E. Washer
F. Unio n
G. Meter adapter
H. Coaxial cable
1.If you plan to run the coaxial cable in conduit, carefully cut the conduit to the
desired length to provide for proper assembly at the housing. A junction box may
be placed in the conduit run to provide a space for extra coaxial cable length.
I. ½ NPT conduit adapter or cable gland (supplied by customer)
J. Electronics housing
K. Coaxial cable nut
L. Housing adapter screws
M. Housing adapter
N. Housing base screw
O. Ground connection
2.Slide the conduit adapter or cable gland over the loose end of the coaxial cable and
fasten it to the adapter on the meter body support tube.
3.If using conduit, route the coaxial cable through the conduit.
4.Place a conduit adapter or cable gland over the end of the coaxial cable.
5.Remove the housing adapter from the electronics housing.
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6.Slide the housing adapter over the coaxial cable.
7.Remove one of the four housing base screws.
8.Attach the coaxial cable ground wire to the housing via the housing base ground
9.Attach and securely tighten the coaxial cable nut to the connection on the
10.Align the housing adapter with the housing and attach with two screws.
11.Tighten the conduit adapter or cable gland to the housing adapter.
Caution
To prevent moisture from entering the coaxial cable connections, install the interconnecting coaxial cable in a single dedicated conduit run or use sealed cable glands at both ends of
the cable.
In remote mount configurations when ordered with a hazardous area option code, the
remote sensor cable and the interconnecting thermocouple cable (MTA option) are
protected by separate intrinsic safety circuits, and must be segregated from each other,
other intrinsically safe circuits, and non-intrinsically safe circuits per local and national
wiring code.
Installation
May 2016
screw.
electronics housing.
3.6.8Calibration
Rosemount 8800D Flowmeters are wet-calibrated at the factory and need no further
calibration during installation. The calibration factor (K-factor) is indicated on each meter
body and is entered into the electronics. Verification can be accomplished with a Field
Communicator or AMS Device Manager.
3.7Software configuration
To complete the installation of the Rosemount 8800D Vortex Flowmeter, configure the
software to meet the requirements of your application. If the flowmeter was pre-configured
at the factory, it may be ready to install. If not, refer to Section 2: Configuration.
LCD display
The LCD display (option M5) provides local indication of the output and abbreviated
diagnostic messages governing operation of the flowmeter. The display is located on the
electronics side of the flowmeter electronics. An extended cover is required to
accommodate the display. Figure 3-19 on page 44 shows the flowmeter fitted with the LCD
display and extended cover.
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Figure 3-19. Rosemount 8800D with Optional Indicator
A. Electronics board
The indicator features an eight-character (and five alphanumeric) liquid crystal display that
gives a direct reading of the digital signal from the microprocessor. During normal
operation, the display can be configured to alternate between the following readings:
Primary variable in engineering units
Percent of range
Tot alized flow
4–20 mA electrical current output
Shedding Frequency
Electronics Temperature
Pulse Output Frequency
Process Temperature
(MTA Option Only)
Mass Flow
Volume Flow
Velocit y Flow
Calculated Process Density
(MTA Option Only)
Signal Strength
Corrected Volume Flow
Figure 3-20 on page 45 shows the indicator display with all segments lit.
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Figure 3-20. Optional Liquid Crystal Display
A HART-based communicator can be used to change the engineering units of the
parameters displayed on the indicator. (See Section 4: Operation for more information).
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May 2016
3.7.1Installing the indicator
For flowmeters ordered with the LCD indicator, the indicator is shipped installed. When
purchased separately from the Rosemount 8800D, you must install the indicator using a
small instrument screwdriver and the indicator kit. The indicator kit includes:
One LCD indicator assembly
One extended cover with o-ring installed
One connector
Two mounting screws
Two jumpers
Referring to Figure 3-19 on page 44, use the following steps to install the LCD indicator:
1.If the flowmeter is installed in a loop, secure the loop and disconnect the power.
2.Remove the flowmeter cover on the electronics side.
Note
The circuit board is electrostatically sensitive. Be sure to observe handling precautions for
static-sensitive components.
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3.Insert the mounting screws into the LCD indicator.
4.Remove the two jumpers on the circuit board that coincide with the Alarm and the
Security settings.
5.Insert the connector into the Alarm/Security junction.
6.Gently slide the LCD indicator onto the connector and tighten the screws into
place.
7.Insert jumpers into ALARM and SECURITY positions on the face of the LCD
indicator.
8.Attach the extended cover and tighten at least one-third turn past O-ring contact.
Note
The indicator may be installed in 90-degree increments for easy viewing. Mounting screws
may need to be installed in the alternative holes based on LCD display orientation. One of
the four connectors on the back of the indicator assembly must be positioned to fit into the
10-pin connector on the electronic board stack.
Note the following LCD display temperature limits:
Operating:–4 to 185°F(–20 to 85°C)
Storage:–50 to 185°F (–46 to 85°C)
3.8Transient protection
The optional transient terminal block prevents damage to the flowmeter from transients
induced by lightning, welding, heavy electrical equipment, or switch gears. The transient
protection electronics are located in the terminal block.
The transient terminal block was verified using test waveforms specified in the following
standard:
IEEE C62.41 - 2002 Category B3 kA crest (8 X 20 μs)
6 kV crest (1.2 X 50 μs)
6 kV/0.5 kA (0.5 μs, 100 kHz, ring wave)
Note
The ground screw inside the terminal housing must be tightened for the proper operation
of the transient protection. Also, a high-current ground connection to earth is required.
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3.8.1Installing the transient protector
For flowmeters ordered with the transient protector option (T1), the protector is shipped
installed. When purchased separately from the Rosemount 8800D, you must install the
protector on a Rosemount 8800D Flowmeter using a small instrument screwdriver, a pliers,
and the transient protection kit.
The transient protection kit includes the following:
One transient protection terminal block assembly
Three captive screws
Use the following steps to install the transient protector:
1.If the flowmeter is installed in a loop, secure the loop and disconnect power.
2.Remove the field terminal side flowmeter cover.
3.Remove the captive screws. Refer to Figure 3-21.
4.Remove the housing ground screw.
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5.Use pliers to pull the terminal block out of the housing.
6.Inspect the connector pins for straightness.
7.Place the new terminal block in position and carefully press it into place. The
terminal block may have to be moved back and forth to get the connector pins
started into the sockets.
This section contains information for advanced configuration parameters and diagnostics.
Operation
May 2016
The software configuration settings for the Rosemount
®
HART
-based communicator or through a control system. The software functions for the
Field Communicator are described in detail in this section of the manual. It provides an
overview and summary of communicator functions. For more complete instructions, see the
communicator manual.
Before operating the Rosemount 8800D in an actual installation, you should review all of
the factory set configuration data to ensure they reflect the current application.
4.1Diagnostics/service
Use the following functions to verify the flowmeter is functioning properly, or when you
suspect component failure or a problem with loop performance, or when instructed to do
so as part of a troubleshooting procedure. Initiate each test with the Field Communicator or
other HART-based communications device.
4.1.1Device Alerts
FastKeys
Shows any active device alerts and allows the user to reset alert status to verify that
corrected alerts have been cleared.
3, 1
™
8800D can be accessed through a
Operation
Density Test Calculation
FastKeys
Allows for the density test calculation for temperature compensated density. The vortex
meter will calculate the associated density at a user entered temperature value. Process
Fluid must be set to Tcomp Sat Steam or Tcomp Liquid in order to run this test.
3, 4, 1, 7
Minimum Electronics Temperature
FastKeys
Displays the lowest temperature that the electronics has been exposed to.
3, 2, 6, 5
Maximum Electronics Temperature
FastKeys
Displays the highest temperature that the electronics has been exposed to.
3, 2, 6, 4
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Self Test
FastKeys
Although the Rosemount 8800D performs continuous self-diagnostics, you can initiate an
immediate diagnostic to check for possible electronics failure.
Self test checks proper communications with the transmitter and provides diagnostic
capabilities for transmitter problems. Follow on-screen instructions if problems are
detected, or check the appropriate appendix for error messages relating to your
transmitter. Initiating a Self Test will suspend flow measurement for up to five seconds.
Reset Transmitter
FastKeys
Restarts the transmitter (same as cycling power). This function does not change or reset the
configuration parameters.
4.1.2Loop Test
FastKeys
Verifies the analog output of the flowmeter, the integrity of the loop, and the operation of
any recorders or similar devices. Conduct the loop test after the flowmeter is installed in the
field.
3, 4, 4, 1, 1
3, 4, 4, 1, 2
3, 5, 2, 7
If the meter is located in a loop with a control system, the loop will have to be set to manual
control before the loop test is performed.
Loop test allows the device to be set to any output between the 4 mA and 20 mA.
4.1.3Flow Simulation
FastKeys
Enables the operator to verify electronics functionality. The transmitter supports internal
and external flow simulation. The PV must be configured to Volume Flow, Velocity Flow,
Mass Flow, or Corrected Volume Flow before Flow Simulation can be enabled.
Primary Variable (PV)
FastKeys
Shows the primary variable value in engineering units for the flow simulation.
Shedding Frequency
FastKeys
Shows the shedding frequency for the flow simulation.
3, 5, 1
3, 5, 1, 3, 1
3, 5, 1, 3, 2
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Simulate Flow
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FastKeys
Allows flow simulation using either an internal or external sensor input signal.
3, 5, 1, 2, 1
Internal Flow Simulation
FastKeys
Disconnects the sensor signal from the electronics, and allows for configuration of the
internal flow simulation for fixed or ramped flow.
3, 5, 1, 2, 1, 2
Fixed Flow
FastKeys
The fixed flow simulation signal can be entered as either a percent of range or flow rate in
engineering units. This simulation locks the input signal at the configured fixed flow rate.
3, 5, 1, 2, 1, 2, 1
Ramped Flow
FastKeys
The minimum and maximum flowrate can be entered as either percent of range or as a flow
rate in engineering units. The ramp time can be entered in seconds from a minimum of 0.6
seconds to a maximum of 34951 seconds. This simulation causes the output of the meter to
continuously ramp from the minimum entered rate to the maximum entered rate and back
over the ramp time.
3, 5, 1, 2, 1, 2, 2
External Flow Simulation (sensor offline)
FastKeys
With external flow simulation, the sensor connection must be removed from the
electronics such that an external frequency source can be used to test and verify the
electronics.
Enable Normal Flow
FastKeys
Exits the flow simulation mode (internal or external) and return to normal operation mode.
Enable Normal Flow must be activated after any simulation is run. Failure to enable normal
flow will leave the vortex in simulation mode.
3, 5, 1, 2, 1, 1
4.1.4Analog Trim
FastKeys
Trims and verifies the analog output in a single function. If the analog output is trimmed, it
will be scaled proportionally through the range of the output.
3, 4, 3, 7
3, 5, 1, 2, 1, 3
Operation
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To trim the digital-to-analog output, initiate the Analog Trim function and connect an
ammeter to the loop to measure the actual analog output of the meter. Follow the
on-screen functions to complete the task.
4.1.5Scaled Analog Trim
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FastKeys
Calibrates the flowmeter analog output using a different scale than the standard 4-20 mA
output scale. Non-scaled Analog Trim (described above), is typically performed using an
ammeter where calibration values are entered in units of milliamperes. Both non-scaled
Analog Trim and Scaled Analog Trim allow you to trim the 4-20 mA output to approximately
±5% of the nominal 4 mA end point and ±3% of the nominal 20 mA end point. Scaled Analog
Trim allows you to trim the flowmeter using a scale that may be more convenient based
upon your method of measurement.
For example, it may be more convenient for you to make electrical current measurements
by direct voltage readings across the loop resistor. If your loop resistor is 500 Ohms, and you
want to calibrate the meter using voltage measurements made across this resistor, you
could rescale (select CHANGE on the Field Communicator) your trim points from 4-20 mA
to 4-20 mA x 500 ohm or 2-10 VDC. Once your scaled trim points have been entered as 2
and 10, you can now calibrate your flowmeter by entering voltage measurements directly
from the voltmeter.
3, 4, 3, 8
4.1.6Shedding Frequency at URV
FastKeys
Gives the shedding frequency corresponding to the URV (Upper Range Value). If the
Primary Variable (PV) is Process Temperature, the Shedding Frequency at URV represents
the shedding frequency of the Volumetric Flow URV. This can be set by assigning Volumetric
Flow to PV and setting range values.
3, 4, 2, 1, 3
4.2Advanced functionality
The Rosemount 8800D enables the configuration of the flowmeter for a wider range of
applications and special situations. Advanced configuration items not detailed in Section 2:
Configuration are shown here.
Flow Sensor
FastKeys
Provides information on Reference and Compensated K-factor and displays values for the
Upper and Lower Sensor Limit.
Upper Sensor Limit—30 ft/s for liquids, 300 ft/s for gases, 800 °F for process temp.
Lower Sensor Limit—0 ft/s (liquid or gas), -58 °F for process temp.
The reference K-factor is factory set according to the actual K-factor for your application. It
should only be changed if you replace parts of the flowmeter. Contact your Rosemount
representative for details.
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The compensated K-factor is based on the reference K-factor as compensated for the given
process temperature, wetted materials, body number, and pipe ID. Compensated K-factor
is an informational variable that is calculated by the electronics of your flowmeter.
Meter Body
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FastKeys
Wetted Material is a factory set configuration variable that reflects the construction of your
flowmeter.
Flange Type is a factory set configuration value that reflects the flange type and rating.
Meter Body Serial Number is a factory set configuration value that identifies the meter body
number.
Body Number Suffix is a factory set configuration variable that stores the body number of
your particular flowmeter and the type of construction. The meter body number is found to
the right of the body number on the meter body tag, which is attached to the support tube
of the meter body.
The format of this variable is a number followed by an alpha character. The number
designates the body number. The alpha character designates the meter body type. There
are three options for the alpha character:
None—Indicates welded meter construction
A—Indicates welded meter construction
B—Indicates cast construction
2, 2, 1, 4
Meter Factor
FastKeys
Compensates the flowmeter for installation effects caused by less than ideal straight run
piping. See reference graphs located in the Rosemount 8800 Vortex Installation Effects
Technical Dat a Sheet
disturbances. This value is entered as a flow multiplication factor of the range of 0.8 to 1.2.
2, 2, 1, 1, 7
for the percent of K-factor shift based on entrance effects of upstream
Alarm/Saturation Levels
FastKeys
Displays the analog output settings for high and low saturation. You can also view the alarm
direction to determine if the alarm jumper on the device electronics is set to high or low.
The Alarm/Saturation Levels can also be set to either Rosemount Standard or NAMUR.
2, 2, Device Information, 3
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Restore Factory Calibration
FastKeys
Restores factory analog trim settings.
3, 4, 3, 9
4.2.1Pulse Output
FastKeys
Can be configured using the configuration tool guided setups.
Note
Configuration of the pulse features is allowed even if the pulse option (Option P) was not
ordered.
The Rosemount 8800D comes with an optional pulse output option (P). This enables the
flowmeter to output the pulse rate to an external control system, totalizer, or other device.
If the flowmeter was ordered with the pulse mode option, it may be configured for either
pulse scaling (based on rate or unit) or shedding frequency output.
There are several methods for configuring the pulse output:
Off
Direct (Shedding Frequency)
Scaled Volume
Scaled Velocity
Scaled Mass
2, 2, 4, 4, 2
Scaled Corrected Volumetric
Note
In order to totalize in compensated mass flow, for units with the MTA option only, set pulse
output to Scaled Mass even if the pulse output was not ordered or will not be used.
Direct (shedding)
This mode provides the vortex shedding frequency as output. In this mode, the software
does not compensate the K-factor for effects such as thermal expansion or differing mating
pipe inside diameters. Scaled pulse mode must be used to compensate the K-factor for
thermal expansion and mating pipe effects.
Scaled volumetric
This mode allows for configuration of the pulse output based on a volumetric flow rate. For
example, set 100 gallons per minute = 10,000 Hz. (The user enterable parameters are flow
rate and frequency.)
Scaled corrected volumetric
This mode allows for configuration of the pulse output based on a corrected volumetric
flow rate.
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Scaled velocity
This mode allows for configuration of the pulse output based on a velocity flow rate.
Scaled mass
This mode allows for configuration of the pulse output based on based on a mass flow rate.
If Process Fluid = Tcomp Sat Steam or Tcomp Liquid, this is a temperature compensated
mass flow.
Pulse scaling based on flow rate
Allows the user to set a certain flow rate to a desired frequency.
For example:
1000 lbs/hr = 1000HZ
1.Enter a flow rate of 1000 lbs/hr.
2.Enter a frequency of 1000Hz.
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Pulse scaling based on flow unit
Allows the user to set one pulse equal to a desired mass, volume or distance.
For example:
1 pulse = 1000lbs.
Enter 1000 for the mass.
Pulse Loop Test
FastKeys
Fixed frequency mode test that checks the integrity of the pulse loop. It tests that all
connections are good and that pulse output is running on the loop.
Note
The Pulse Loop Test will not check for valid pulse scaling configuration. It will set a frequency
without consideration of the pulse scaling configuration.
3, 5, 3, 4
4.2.2Temperature Compensation
When the vortex meter is ordered with the MTA option, the transmitter is capable of
dynamically compensating for changes in fluid density to provide accurate mass and
corrected volumetric flow measurement. Temperature Compensation is for use with the
Temperature Compensated Steam (TComp Sat Steam) or Temperature Compensated
Liquids (TComp Liquid) fluid types.
Operation
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Temperature Compensated Steam
FastKeys
To compensate for changes in saturated steam, select the Temperature Compensated
Steam (TComp Sat Steam) fluid type. Choosing this fluid type automatically enables
dynamic density compensation while measuring mass flow or corrected volumetric flow by
using the built-in steam tables.
2, 2, 1, 1, 3
Temperature Compensated Liquids
FastKeys
Setting the Process Fluid Type to Temperature Compensated Liquids (Tcomp Liquid) directs
the transmitter to dynamically compensate for changes in process density using either the
built-in water density calculations per IAPWS-IF97 or the user defined temperature and
density points.
Water
FastKeys
To compensate for density changes in water, first set the Temperature Compensated Liquid
(Temp Comp Liquid) fluid type to water. Then set the approximate process pressure. This
will enable dynamic density compensation while measuring mass flow or corrected
volumetric flow by using the built-in water density calculations.
2, 2, 1, 1, 3 (set Process Fluid Type)
2, 2, 8, 1 (set Temp Comp Liquid to Water)
2, 2, 8, 2 (set Process Pressure)
User Defined
FastKeys
To compensate for density changes in a liquid type other than water, navigate to the Temp
Comp Liquid screen using a Field Communicator and select User Defined. Next, configure
the appropriate temperature and density points. Enter between 2 and 5 temperature and
density points in order of ascending temperature. The transmitter will use these entered
values to interpolate between and calculate the process density. This enables dynamic
density compensation while measuring mass flow or corrected volumetric flow for a user
defined liquid.
2,2,8,1 (set Temp Comp Liquid to User Defined)
2,2,8,2 (set Temperature/Density Points)
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4.2.3SMART Fluid Diagnostic
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FastKeys
Due to unpredictable flow conditions and multiple potential failure modes
in a process piping system, the SMART Fluid Diagnostic should not be used
as a fail-safe alert when the transition from liquid to gas represents a safety
hazard.
Alerts users when the fluid flow changes from liquid flow to gas flow. This is useful in oil and
gas separator applications where stuck dump valves may allow gas to pass through the
water leg and eventually into storage tanks. The diagnostic will alert users when gas begins
flowing through the water leg. Additionally, the diagnostic can be used in blow down cycles
where air, nitrogen, or steam are used to clear pipes. Once the liquid has been cleared, the
meter will detect gas flow and the user can use that alert to properly time blow down cycles.
The SMART Fluid Diagnostic uses several application specific parameters to allow users to
fine-tune functionality to their installation. Additionally, the diagnostic is available as a trial
for 30 days on all equipped transmitters.
2, 2, 6
Control
FastKeys
2, 2, 6, 2, 1
Enables user to turn the SMART Fluid Diagnostic Functionality ON or OFF. Default is OFF
unless configured for SMART Fluid Diagnostic from the factory.
Alarm Type
FastKeys
Enables user to select the alarm type. The alarm types are Analog, Pulse, Analog and Pulse,
and Neither Analog or Pulse. This is the output that the transmitter will use to send the
alarm when the meter detects a change from liquid to gas flow. In order to use the pulse
output alarm, the transmitter must be equipped with the pulse output option. The default
setting is Neither Analog or Pulse.
2, 2, 6, 2, 2
Analog Alarm
FastKeys
If the output type selected includes Analog, then the output level chosen here will be used
for the alarm. The valid range is 3.5–22.65 mA. Default is 21.75 mA.
2, 2, 6, 2, 3
Pulse Alarm
FastKeys
If the output type selected includes pulse, then the output frequency you choose here will
be used for the alarm. The valid range is 1–10,000 Hz. Default is 1 Hz.
2, 2, 6, 2, 4
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Alarm Latch
FastKeys
Dictates the behavior of the alarm once gas flow is detected. If Alarm Latch is Enabled, the
alarm will continue until the user resets the alarm manually (using a HART communication
device such as AMS Device Manager, or handheld communicator). When Disabled, the
alarm will stop once liquid flow is detected by the transmitter, at which time the meter will
continue normal operation. The default is Disabled.
2, 2, 6, 2, 5
Optimize Gas Detection Filters
FastKeys
Once the gas density has been determined, optimize the gas detection filters. This consists
of two parts. The first is setting the gas density and second is setting the gas detection
window.
The gas density value must be selected from a list of densities. This will be used to set the
detection filters for the gas flow. Choose the value from the drop down that is the closest to
the process gas density without exceeding it. Default value is 0.15 lb/cu ft. After filter
optimization, it is best practice to verify that your gas detection low flow cutoff is above
your highest expected liquid flow rate frequency.
The Gas Detection Window specifies how long the meter will look for a gas flow event after
the meter stops detecting liquid flow. Under typical conditions, the transition takes place
quickly; however, if the transition is slow, then a longer window may be required. The
acceptable range of values is 1 to 9 seconds and the default value is 1 second.
2, 2, 6, 2, Next
SMART Fluid Diagnostic Trial
FastKeys
The SMART Fluid Diagnostic can be used on a trial basis for 30 days following activation of
the trial. The trial period can be activated by entering "8800" in the license field. To
permanently activate the diagnostic following the trial, contact Customer Support to
obtain an activation code.
Licensing
FastKeys
Enter the license key to enable SMART Fluid Diagnostics if it was not ordered from the
factory.
2, 2, 7, 1
2, 2, 7, 1, 5
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4.2.4Communications
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FastKeys
2, 2, HART
Multidrop configuration refers to the connection of several flowmeters to a single
communications transmission line. Communication occurs digitally between a HART-based
communicator or control system and the flowmeters. Multidrop mode automatically
deactivates the analog output of the flowmeters. Using the HART communications
protocol, up to 15 transmitters can be connected on a single twisted pair of wires or over
leased phone lines.
The use of a multidrop installation requires consideration of the update rate necessary from
each transmitter, the combination of transmitter models, and the length of the
transmission line. Multidrop installations are not recommended where intrinsic safety is a
requirement. Communication with the transmitters can be accomplished with
commercially available Bell 202 modems and a host implementing the HART protocol. Each
transmitter is identified by a unique address (1-15) and responds to the commands defined
in the HART protocol.
Figure 4-1 on page 59 shows a typical multidrop network. This figure is not intended as an
installation diagram. Contact Rosemount product support with specific requirements for
multidrop applications.
Figure 4-1. Typical Multi-drop Network
Operation
A. Bell 202 Modem
B. Power Supply
Note
The Rosemount 8800D is set to poll address zero at the factory, allowing it to operate in the
standard point-to-point manner with a 4–20 mA output signal. To activate multidrop
communication, the transmitter poll address must be changed to a number between 1 and
15. This change deactivates the 4–20 mA analog output, setting it to 4 mA, and disables the
failure mode alert signal.
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Poll address
FastKeys
Enables configuration of the poll address for a multi-dropped meter. The poll address is used
to identify each meter on the multi-drop line. Follow the on-screen instructions to set the
address at a number from 1 to 15. HART 7 allows an address range of 0 to 63. To set or
change the flowmeter address, establish communication with the selected Rosemount
8800D in the loop.
Auto poll
FastKeys
When a HART-based communicator is powered up and auto polling is on, the
communicator automatically polls the flowmeter addresses to which it is connected. If the
address is 0, the HART-based communicator enters its normal Online mode. If it detects an
address other than 0, the communicator finds each device in the loop and lists them by poll
address and tag. Scroll through the list and select the meter with which you need to
communicate.
If Auto Poll is off, the flowmeter must have the poll address set to 0 or the flowmeter will not
be found. Additionally, if a single connected device has an address other than zero and auto
polling is off, the device will not be found.
4.2.5Burst Mode
FastKeys
2, 2, HART, 2, 1
OFF LINE FCN
2, 2, HART, 3
Burst Mode configuration
The Rosemount 8800D includes a burst mode function that broadcasts the primary variable
or all dynamic variables approximately three to four times a second. The Burst Mode is a
specialized function used in very specific applications. The burst mode function enables you
to select the variables to broadcast while in the burst mode and to select the burst mode
option. HART 7 devices offer enhanced burst mode capabilities including the ability to
broadcast variable status, the ability to broadcast up to 8 variables, and the ability to trigger
messages based on variable events or at defined values.
The Burst Mode variable enables you to set the burst mode to the needs of your application.
Options for the burst mode setting include:
Off—Turns off the burst mode so that no data are broadcast on the loop.
On—Turns burst mode on so that the data selected under Burst Option are broadcast over
the loop.
Additional command options may appear that are reserved and do not apply to the
Rosemount 8800D.
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Burst Option
Enables you to select the variables to broadcast over the loop:
PV—Selects the primary variable for broadcast over the loop.
Percent Range/Current—Selects the primary variable as percent of range and analog output
current for broadcast over the loop.
Process vars/crnt—Selects the primary variables and analog outuput current for broadcast
over the loop.
Dynamic Vars—Burst all dynamic variables in the transmitter.
Xmtr Vars—Allows the user to define custom burst variables.
4.2.6Local Display
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FastKeys
2, 2, 9
Allows user to select which variables are shown on the optional (M5) local display:
Primary Variable
Percent of Range
Loop Current
To ta l
Shedding Frequency
Process Temperature (MTA Option
Only)
Signal Strength
4.2.7Signal Processing
FastKeys
The Rosemount 8800D and its HART-based communications feature enables the ability to
filter out noise and other frequencies from the vortex signal. The four user-alterable
parameters associated with the digital signal processing on the Rosemount 8800D include
low-pass filter corner frequency, low-flow cutoff, trigger level, and damping. These four
signal conditioning functions are configured at the factory for optimum filtering over the
range of flow for a given line size, service type (liquid or gas), and process density. For most
applications, leave these parameters at the factory settings. Some applications may require
adjustment of the signal processing parameters.
2, 2, 5
Mass Flow
Velocity Flow
Volume Flow
Pulse Frequency
Electronics Temperature
Calculated Process Density (MTA
Option Only)
Corrected Volume Flow
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Use signal processing only when recommended in the troubleshooting section of this
manual. Some of the problems that may require signal processing include:
High output (output saturation)
Erratic output with or without flow present
Incorrect output (with known flow rate)
No output or low output with flow present
Low total (missing pulses)
High total (extra pulses)
If one or more of these conditions exist, and you have checked other potential sources
(K-factor, service type, lower and upper range values, 4–20 mA trim, pulse scaling factor,
process temperature, pipe ID), refer to Section 5: Troubleshooting. If problems persist after
signal processing adjustments, consult the factory.
Optimize DSP (Digital Signal Processing
FastKeys
2, 2, 5, 5, 1
Used to optimize the range of the flowmeter based on the density of the fluid. The
electronics uses process density to calculate the minimum measurable flow rate, while
retaining at least a 4:1 signal to the trigger level ratio. This function will also reset all of the
filters to optimize the flowmeter performance over the new range. For a stronger signal,
select a density value that is lower than the actual flowing density. For dynamic process
densities, select a density value that is lower than the lowest expected flowing density.
Signal Strength
FastKeys
Variable that indicates the flow signal strength to trigger level ratio. This ratio indicates if
there is enough flow signal strength for the meter to work properly. For accurate flow
measurement, the value should be greater than 4. Values greater than 4 will allow increased
filtering for noisy applications. For values greater than 4, with sufficient density, the
Optimize DSP function can be utilized to optimize the measurable range of the flowmeter.
Values less than 4 may indicate applications with very low densities and/or applications with
excessive filtering.
3, 4, 2,1, 4
Manual Filter Adjust
FastKeys
2, 2, 5, 2
62
Allows for manual adjustment of the following settings: Low Flow Cutoff, Low Flow Cutoff
Response, Low Pass Corner Frequency, and Trigger Level, while monitoring flow and or
signal strength.
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Low Flow Cutoff
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FastKeys
2, 2, 5, 2, 2
Enables the adjustment of the filter for noise at no flow. It is set at the factory to handle
most applications, but certain applications may require adjustment either to expand
measurability or to reduce noise.
Low Flow Cutoff offers two modes for adjustment:
Decrease Low Flow Cutoff
Increase Low Flow Cutoff
It also includes a dead band such that once flow goes below the cutoff value, output does
not return to the normal flow range until flow goes above the dead band. The dead band
extends to approximately 20 percent above the low flow cutoff value. The dead band
prevents the output from bouncing between 4 mA and normal flow range if the flow rate is
near the low flow cutoff value.
LFC Response
FastKeys
Defines how the output of the Vortex meter will behave entering into and coming out of the
Low Flow Cutoff. Options are stepped or damped. (See Technical Note 00840-0200-4004
for more information regarding Low Flow Measurement).
2, 2, 5, 2, 3
Low Pass Corner Frequency
FastKeys
Sets the low-pass filter corner frequency to minimize the effects of high frequency noise. It
is factory set based on line size and service type. Adjustments may be required only if you
are experiencing problems. See Section 5: Troubleshooting.
The Low Pass Filter corner frequency variable offers two modes for adjustment:
Decrease Low Pass Corner Frequency
Increase Low Pass Corner Frequency
2, 2, 5, 2, 4
Trigger Level
FastKeys
Configured to reject noise within the flow range while allowing normal amplitude variation
of the vortex signal. Signals of amplitude lower than the Trigger Level setting are filtered
out. The factory setting optimizes noise rejection in most applications. Trigger Level offers
two modes for adjustment:
Increase Trigger Level
Decrease Trigger Level
2, 2, 5, 2, 5
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Note
Do not adjust this parameter unless directed to do so by a Rosemount Technical Support
Representative.
Restore Default Filter
FastKeys
Restores all of the signal conditioning variables to default values. Default values for signal
conditioning variables will be set automatically depending on fluid type using the Optimize
DSP function with a density setting of 40 lb/ft
2, 2, 5, 5, 2
Flow Damping
FastKeys
The default damping value is 2.0 seconds. Flow Damping can be reset to any value between
0.2 and 255 seconds.
2, 2, 5, 4
Temperature Damping
FastKeys
The default damping value is 2.0 seconds. Temperature Damping can be reset to any value
between 0.4 and 32 seconds. Temperature Damping can only be configured if Temperature
is assigned to be PV.
2, 2, 5, 4 (MTA Option Only)
4.2.8Device Information
FastKeys
2, 2, Device Information
3
for liquid or 0.15 lb/ft3 for gas.
64
Used for identification of flowmeters in the field and to store information that may be useful
in service situations. Information variables have no effect on flowmeter output or
process variables.
Tag
FastKeys
The quickest variable to identify and distinguish between flowmeters. Flowmeters can be
tagged according to the requirements of your application. The tag may be up to eight
characters long. HART 7 supports Long Tag, which allows up to 32 characters.
2, 2, Device Information, 1, 1
Long Tag
FastKeys
Available for HART® 7 and allows for up to 32 characters
2, 2, Device Information, 1, 2
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Descriptor
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FastKeys
Longer user-defined variable to assist with more specific identification of the particular
flowmeter. It is usually used in multi-flowmeter environments and provides 16 characters.
2, 2, Device Information, 1, 6
Message
FastKeys
Provides an even longer user-defined variable for identification and other purposes. It
provides 32 characters of information and is stored with the other configuration data.
2, 2, Device Information, 1, 7
Date
FastKeys
User-defined variable that provides a place to save a date, typically used to store the last
date that the transmitter configuration was changed.
2, 2, Device Information, 1, 5
Write Protect
FastKeys
Read-only informational variable that reflects the setting of the hardware security switch. If
Write Protect is ON, configuration data are protected and cannot be changed from a
HART-based communicator or control system. If Write Protect is OFF, configuration data
may be changed using the communicator or control system. For HART 7 devices, a software
lock is also available.
2, 2, Device Information, 4, 1
Revision Numbers
FastKeys
Fixed informational variables that provide the revision number for different elements of
your Field Communicator and Rosemount 8800D. These revision numbers may be required
when calling the factory for support. Revision numbers can only be changed at the factory
and are provided for the following elements:
Universal Revision
FastKeys
Designates the HART Universal Command specification to which the transmitter is
designed to conform.
Transmitter Revision
FastKeys
Designates the revision for Rosemount 8800D specific command identification for HART
compatibility.
2, 2, Device Information, 2
2, 2, Device Information, 2, 1
2, 2, Device Information, 2, 2
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Software Revision
FastKeys
Designates the internal software revision level for the Rosemount 8800D.
2, 2, Device Information, 2, 3
Hardware Revision
FastKeys
Designates the revision level for the Rosemount
8800D hardware.
2, 2, Device Information, 2, 4
DD Revision
FastKeys
Factory-defined unique identifier for device descriptor revision identification in the
software.
2, 2, Device Information, 2, 5
4.2.9Change HART Revisions
FastKeys
On enabled devices, change between HART revision 5 and 7. Configuration will be saved
while switching between revisions.
2, 2, HART, 2, Change HART Rev
4.2.10Locate Device
FastKeys
For HART 7 devices with LCD displays, enabling Locate Device displays the characters
"0-0-0-0" on the LCD display. This allows for easy field identification of the device during
commissioning or service.
“Troubleshooting tables” on page 68 provides summarized troubleshooting suggestions for
the most common problems that occur during operation. The symptoms of metering
problems include:
Communications problems with a HART
Incorrect 4–20 mA output
®
-based communicator
Troubleshooting
May 2016
Incorrect pulse output
Error messages on HART-based communicator
Flow in pipe but no transmitter output
Flow in pipe with incorrect transmitter output
Output with no actual flow
Note
The Rosemount
™
8800D Sensor is extremely reliable and should not have to be replaced.
Please consult the factory before removing the sensor.
Troubleshooting
67
Troubleshooting
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5.1Safety messages
Instructions and procedures in this section may require special precautions to ensure the
safety of the personnel performing the operations. Refer to the following safety messages
before performing any in this section.
Explosions could result in death or serious injury.
Do not remove the transmitter cover or thermocouple (MTA option only) from
the electronics housing in explosive atmospheres when the circuit is alive.
Before connecting a HART-based 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.
Verify the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Both transmitter covers must be fully engaged to meet explosion-proof
requirements.
Failure to follow these installation guidelines could result in death or serious
injury.
Make sure only qualified personnel perform the installation.
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The sensor cavity could contain line pressure if an abnormal failure has occurred inside
the meter body. De-pressurize flow line before removing sensor nut.
5.2Troubleshooting tables
The most common problems experienced by users of the Rosemount 8800D are listed in
Table 5 -1 along with potential causes of the problem and suggested corrective actions. If
the problem you are experiencing is not listed here, see the Advanced Troubleshooting
section.
Table 5-1. Troubleshooting Table
SymptomCorrective action
Communication
problems with
HART-based
Communicator
• Check for a minimum of 10.8 Vdc at transmitter
terminals.
• Check communications loop with HART-based
communicator.
• Check for loop resistor (250 to 1000 ohms).
• Measure loop resistor value (R
power supply voltage (V
(R
x 0.024)] > 10.8 Vdc.
loop
ps
) and source
loop
). Check that [Vps -
• Check for transmitter in multidrop mode.
• Check for transmitter in burst mode.
• Remove pulse connection if you have a three
wire pulse installation.
• Replace electronics.
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SymptomCorrective action
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May 2016
Incorrect 4–20 mA
Output
Incorrect Pulse Output
Error Messages on
HART-based
Communicator
• Check for minimum 10.8 Vdc at transmitter
terminals.
• C hec k UR V, LRV, Densi ty, Spe cial Un its , LFC –
compare these inputs with the sizing program
results. Correct configuration.
• Perform 4–20 mA loop test.
• Check that 4–20 mA output is correct.
• Check pulse counter specifications.
• Check pulse mode and scaling factor. (Make sure
scaling factor is not inverted).
• See alphabetical listing in the Error Messages
Table for the communicator starting at Diagnostic
messages .
Flow in Pipe, No OutputBasics
• Check to make sure the meter is installed with
the arrow in the direction of process flow.
• Perform basic checks for Incorrect 4–20 mA
Output Problem (see Incorrect 4–20 mA
Output).
• Check and correct configuration parameters in
this order:
• Check sizing. Make sure flow is within
measurable flow limits. Use Instrument Toolkit
for best sizing results.
• Refer to Advanced troubleshooting .
• See Appendix C: Electronics Verification for
electronics verification procedure.
Electronics
• Run a self test with a HART-based interface tool.
• Using sensor simulator, apply test signal.
• Check configuration, LFC, trigger level, STD vs.
actual flow units.
• Replace electronics.
Process Config - transmitter mode,
process fluid, fixed process temperature,
density, reference K-factor, flange type,
mating pipe ID, variable mapping, PV unit,
range values - (URV, LRV), PV damping,
auto filter adjust, pulse mode and scaling
(if used).
• Check for corrosion on terminal block.
• Replace electronics if necessary.
• Refer to Advanced troubleshooting .
•See Appendix C: Electronics Verification for
electronics verification procedure.
•Perform pulse test.
• Select pulse scaling so that pulse output is
less than 10,000Hz at URV.
Application Problems
• Calculate expected frequency (see
Appendix C: Electronics Verification). If
actual frequency is the same, check
configuration.
• Check that application meets viscosity and
specific gravity requirements for the line
size.
• Recalculate back pressure requirement. If
necessary and possible, increase back
pressure, flow rate, or operating pressure.
Sensor
• Inspect coaxial sensor cable for cracks.
Replace if necessary.
• Check that sensor impedance at process
temperature is > 1 Mega-Ohm (will
function down to 0.5 Mega-Ohms).
Replace sensor if necessary (Replacing the
sensor ).
• Measure sensor capacitance at SMA
connector (115-700pF).
• Check torque on sensor nut (32 ft-lb). For
1-8 inch meter body with ANSI 1500
flanges torque on sensor nut should be 50
ft-lbs.
5.3Advanced troubleshooting
The Rosemount 8800D electronics provides several advanced troubleshooting features.
These features enhance your ability to look inside the electronics and can be helpful for
troubleshooting inaccurate readings. As shown in Figure 5-1, there are several test points
located on the electronics.
5.3.1Diagnostic messages
The Field Communicator diagnostic messages and their corresponding descriptions are
shown in Table 5 -2.
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Table 5-2. Field Communicator Diagnostic Messages
MessageDescription
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ROM CHECKSUM ERRORThe EPROM memory checksum test has failed. The transmitter will remain in ALARM
NV MEM CHECKSUM ERRORThe User Configuration area in Nonvolatile EEPROM memory has failed the
RAM TEST ERRORTransmitter RAM memory test has detected a failed RAM location. The transmitter
DIGITAL FILTER ERRORThe digital filter in the transmitter electronics is not reporting. The transmitter will
COPROCESSOR ERRORIf this occurs at power-up, the RAM/ROM test in the coprocessor has failed. If this
SOFTWARE DETECTED ERRORThe software has detected corrupted memory. One or more of the software tasks
ELECTRONICS FAILUREThis is a summary error indication. This error will be reported if any of the following
TRIGGER LEVEL OVERRANGEThe trigger level in the transmitter digital signal processing has been set beyond its
LOW PASS FILT OVERRANGEThe low pass filter in the transmitter digital signal processing has been set beyond its
ELECTRONICS TEMP OUT OF
LIMITS
INVALID CONFIGURATIONCertain configuration parameters are out of range. Either they have not been
FACTORY EEPROM
CONFIG ERROR
LOW FLOW CUTOFF
OVERRANGE
T/C A/D ERRORThe ASIC responsible for the analog to digital conversion of the process temperature
THERMOCOUPLE OPENThe thermocouple that is used to measure the process temperature has failed. Check
CJ RTD FAILUREThe RTD temperature sensing device for sensing the cold junction temperature has
until the ROM checksum test passes.
checksum test. It is possible to repair this checksum by verifying and reconfiguring
ALL transmitter parameters. The transmitter will remain in ALARM until the EEPROM
checksum test passes.
will remain in ALARM until the RAM test passes.
remain in ALARM until the digital signal processor resumes reporting flow data.
occurs during normal operations, the coprocessor has reported either a math error
or a negative flow. This is a FATAL error and the transmitter will remain in ALARM until
reset.
has corrupted memory. This is a FATAL error and the transmitter will remain in
ALARM until reset.
error conditions are present:
1. ROM Checksum Error
2. NV Memory Checksum Error
3. RAM Test Error
4. ASIC Interrupt Error
5. Digital Filter Error
6. Coprocessor Error
7. Software Detected Error
limit. Use manual filter adjustment to “Increase Filtering” or “Increase Sensitivity” to
bring the trigger level back within range.
limit. Use manual filter adjustment to “Increase Filtering” or “Increase Sensitivity” to
bring the low pass filter adjustment back within range.
The electronics temperature sensor within the transmitter is reporting a value out of
range.
properly configured, or they have been forced out of range as a result of a change to
a related parameter. For example: When using mass flow units, changing the process
density to a value too low could push the configured Upper Range Value beyond the
sensor limit. In this case, the Upper Range Value would need to be reconfigured.
The factory configured values in non-volatile EEPROM memory have become
corrupted. This is a FATAL error. The transmitter will remain in ALARM until reset.
On start-up, the configured setting for the VDSP Low Flow Cutoff setting was found
to be too high or too low. The increase range or decrease no flow noise command of
the VDSP Low Flow Cutoff setting has not yet brought the setting into a valid range.
Continue adjusting the Low Flow Cutoff to a valid value or use the Filter Restore
Option.
thermocouple and cold junction RTD has failed. If the problem persists, replace the
transmitter electronics.
the connections to the transmitter electronics. If the problem persists, replace the
thermocouple.
failed. If the problem persists, replace the transmitter electronics.
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MessageDescription
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FLOW SIMULATIONThe transmitter flow signal is being simulated by a signal generator internal to the
SENSOR SIGNAL IGNOREDThe transmitter flow signal is being simulated by a signal generator external to the
LOW LOOP VOLTAGEThe voltage at the transmitter terminals has dropped to a level that is causing the
INTERNAL COMM FAULTAfter several attempts, the microprocessor failed in communication with the
INTERNAL SIGNAL FAULTThe flow data encoded on a pulse signal from the Sigma-Delta ASIC to VDSP has
FACTORY NV MEM CONFIG
ERROR
TEMPERATURE ELECTRONICS
FAI LUR E
PROCESS TEMP OUT OF
RANGE
PROCESS TEMP ABOVE
DENSITY CALCULATION
LIMITS
PROCESS TEMP BELOW
DENSITY CALCULATION
LIMITS
FIXED PROCESS
TEMPERATURE IS ACTIVE
INVALID MATH COEFFThe area of nonvolatile memory used to store the curve fit coefficients for the
CJ TEMP ABOVE SENSOR
LIMITS
CJ TEMP BELOW SENSOR
LIMITS
transmitter. The actual flow through the meter body is NOT being measured.
transmitter. The actual flow through the meter body is NOT being measured.
internal voltage supplies to drop, reducing the capability of the transmitter to
accurately measure a flow signal. Check the terminal voltage and either increase the
power supply voltage or reduce loop resistance.
Sigma-Delta ASIC. A power cycle may resolve the problem. Also, check the
inter-board connector. If the problem persists, replace the transmitter electronics.
been lost. A power cycle may resolve the problem. Also check the inter-board
connector. If the problem persists, replace the transmitter electronics.
A segment of nonvolatile memory that is written only at the factory has failed a
checksum verification. This fault cannot be fixed by reconfiguring the transmitter
parameters. Replace the transmitter electronics.
The electronics circuitry that supports the measurement of the Process Temperature
has failed. The transmitter can still be used in a non-Process Temperature mode.
The Process Temperature is beyond the defined sensor limits of -50 °C to 427 °C.
The calculation of temperature compensated process density is no longer accurate.
Reduce the process temperature or verify device configuration.
The calculation of temperature compensated process density is no longer accurate.
Increase the process temperature or verify device configuration.
Due to a problem detected with the thermocouple, a configured fixed Process
Temperature is being substituted for the measured Process Temperature. This fixed
Process Temperature is also being used in saturated steam density calculations.
coprocessor calculations does not contain valid data. This data can only be loaded at
the factory. Replace the transmitter electronics.
The temperature reported from the Cold Junction temperature sensor is above CJ
sensor limits.
The temperature reported from the Cold Junction temperature sensor is below CJ
sensor limits.
5.3.2Electronics test points
As shown in Figure 5-1, there are several test points located on the electronics.
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C
B
B
C
D
A
E
G
H
F
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Figure 5-1. Electronics Test Points
A. Ground
B. Test Frequency IN
C. TP1
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The electronics is capable of internally generating a flow signal that may be used to simulate
a sensor signal to perform electronics verification with a handheld communicator or AMS
Device Manager interface. The simulated signal amplitude is based on the transmitter
required minimum process density. The signal being simulated can be one of several
profiles – a simulated signal of constant frequency or a simulated signal representative of a
ramping flow rate. The electronics verification procedure is described in detail in
Appendix C: Electronics Verification. To verify the electronics, you can input a frequency on
the “TEST FREQ IN” and “GROUND” pins to simulate flow via an external signal source such
as a frequency generator. To analyze and/or troubleshoot the electronics, an oscilloscope
(set for AC coupling) and a handheld communicator or AMS Device Manager interface are
required. Figure 5-2 is a block diagram of the signal as it flows from the sensor to the
microprocessor in the electronics.
Figure 5-2. Signal Flow
A. External Test Frequency Input
B. Sensor
C. Charge Amplifier
D. Amplifier/Low Pass Filter
E. TP1
F. A-to-D Converter/Internal Frequency Generator
G. Digital Filter
H. Microprocessor
™
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B
A
C
0
3.0 V
0
A
B
C
0
3.0 V
0
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5.3.3TP1—Test point 1
TP1 is the vortex shedding signal after it has gone through the charge amplifier and low pass filter
stages and into the input of the sigma delta A-to-D converter ASIC in the electronics. The signal
strength at this point will be in the mV to Volt range.
TP1 is easily measured with standard equipment.
Figues 5-4, and 5-5 show waveforms that may cause the output to be inaccurate. Figure 5-3
shows an ideal (clean) waveform. Please consult the factory if the waveform you detect is
not similar in principle to Figure 5-3.
Figure 5-3. Clean Signals
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A. Vortex signal (TP1)
B. Trigger level
C. Shedding frequency output
Figure 5-4. Noisy Signals
A. Vortex signal (TP1)
B. Trigger level
C. Shedding frequency output
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0
3.0 V
0
A
B
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Figure 5-5. Improper Sizing/Filtering
A. Vortex signal (TP1)
B. Trigger level
C. Shedding frequency output
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5.4Diagnostic messages on LCD display
In addition to the output, the LCD display displays diagnostic messages for troubleshooting
the flowmeter. These messages are as follows:
SELFTEST
The flowmeter is in the process of performing an electronics self test.
FAULT_ROM
The flowmeter electronics has undergone a EPROM checksum fault. Contact your Field
Service Center.
FAULT_EEROM
The flowmeter electronics has undergone a EEPROM checksum fault. Contact your Field
Service Center.
FAULT_RAM
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May 2016
The flowmeter electronics has undergone a RAM test fault. Contact your Field Service
Center.
FAULT_ASIC
The flowmeter electronics has undergone a digital signal processing ASIC update fault.
Contact your Field Service Center.
FAULT_CONFG
The flowmeter electronics has lost critical configuration parameters. This message will be
followed by information detailing the missing configuration parameters. Contact your Field
Service Center.
FAULT_COPRO
The flowmeter electronics has detected a fault in the math coprocessor. Contact your Field
Service Center.
FAULT_SFTWR
The flowmeter electronics has detected a non-recoverable fault in the software operation.
Contact your Field Service Center.
FAULT_BDREV
Troubleshooting
The flowmeter electronics has detected incompatible electronics hardware. Contact your
Field Service Center.
FAULT_SDCOM
The flowmeter electronics has detected an unexpected sigma-delta ASIC communications
fault. Contact your Field Service Center.
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FAULT_SDPLS
The flowmeter electronics has detected a loss of flow data from the sigma-delta ASIC.
Contact your Field Service Center.
FAULT_TASK(#)
The flowmeter electronics has detected a fatal error. Record (#) and contact your Field
Service Center.
FAULT_COEFF
The area of NV memory used to store the curve fit coefficients for the coprocessor
calculation does not contain valid data. This data can only be loaded at the factory. Contact
your Field Service Center.
FAULT_TACO (MTA option only)
The ASIC responsible for the analog to digital conversion of the process temperature has
failed. Contact your Field Service Center.
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FAULT_TC (MTA option only)
The temperature sensor that is used to measure the process temperature has failed.
Contact your Field Service Center.
FAULT_RTD (MTA option only)
The RTD for cold junction compensation has failed. Contact your Field Service Center.
SIGNAL_SIMUL
The transmitter flow signal is being simulated by a signal generator internal to the
transmitter. The actual flow through the meter body is NOT being measured.
SENSOR_OFFLINE
The transmitter flow signal is being simulated by a signal generator external to the
transmitter. The actual flow through the meter body is NOT being measured.
FAULT_LOOPV
The voltage at the transmitter terminals has dropped to a level that is causing the internal
voltage supplies to drop, reducing the capability of the transmitter to accurately measure a
flow signal. Check the terminal voltage and either increase the power supply voltage or
reduce loop resistance.
5.5Testing procedures
Use the test functions to verify that the flowmeter is functioning properly, or when you
suspect component failure or a problem with loop performance, or when instructed to do
so as part of a troubleshooting procedure. Initiate each test with a HART-based
communications device. See “Diagnostics/service” on page 49 for details.
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B
D
A
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5.6Hardware replacement
The following procedures will help you disassemble and assemble the Rosemount 8800D
hardware if you have followed the troubleshooting guide earlier in this section of the
manual and determined that hardware components need to be replaced.
Note
Use only the procedures and new parts specifically referenced in this manual. Unauthorized
procedures or parts can affect product performance and the output signal used to control a
process, and may render the instrument dangerous.
Note
Process should be vented before the meter body is removed from service for disassembly.
Flowmeters should not be left in service once they have been determined to be inoperable.
5.6.1Replacing the terminal block in the housing
To replace the field terminal block in the housing, you will need a small screwdriver. Use the
following procedure to replace the terminal block in the housing of the Rosemount 8800D.
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May 2016
Note
Remove power before removing the electronics cover.
Remove the terminal block
1.Turn off the power to the Rosemount 8800D.
2.Unscrew the cover. Refer to Figure 5-6.
See “Safety messages” on page 68 for complete warning information.
Figure 5-6. Terminal Block Assembly
A. Cover
B. O-ring
C. Terminal block
D. Captive screws (3x)
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3.Disconnect the wires from the field terminals. Be sure to secure them out of the
4.Remove the ground screw if transient protection (Option T1) is installed.
5.Loosen the three captive screws.
6.Pull outward on the terminal block to remove it from the housing.
Install the terminal block
1.Align the socketed holes on the back side of the terminal block over the pins
2.Slowly press the terminal block into place. Do not force the block into the housing.
3.Tighten the three captive screws to anchor the terminal block.
4.Connect the wires to the appropriate field terminals.
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way.
protruding from the bottom of the housing cavity in the terminal block side of the
electronics housing.
Check the alignment if it does not glide into place.
5.Reinstall and tighten the transient ground screw if you have the transient option
(Option T1).
6.Screw on and tighten the cover.
5.6.2Replacing the electronics boards
The Rosemount 8800D electronics boards may need to be replaced if they have been
damaged or otherwise become dysfunctional. Use the following procedures to replace
electronics boards in the Rosemount 8800D. You will need a small Phillips head screwdriver
and pliers.
Note
The electronics boards are electrostatically sensitive. Be sure to observe handling
precautions for static-sensitive components.
Note
Remove power before removing the electronics cover.
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B
C
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Remove the electronics boards
1.Turn off the power to the Rosemount 8800D.
2.Unscrew and remove the electronics board compartment cover. (Unscrew and
Figure 5-7. Electronics Boards Assembly
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May 2016
remove the LCD display cover if you have the LCD display option).
A. Electronics boards
B. LCD display
C. LCD display cover
3.If the meter has the LCD display option, loosen the two screws. Remove the LCD
display and the connector from the electronics board.
4.Loosen the three captive screws that anchor the electronics.
5.Use pliers or a flathead screwdriver to carefully remove the sensor cable clip from
the electronics.
6.Remove thermocouple if MTA option installed.
7.Use the handle molded into the black plastic cover to slowly pull the electronics
boards out of the housing.
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Install the electronics boards
1.Verify that power to the Rosemount 8800D is off.
2.Align the sockets on the bottom of the two electronics boards over the pins
3.Carefully guide the sensor cable through the notches on the edge of the circuit
4.Slowly press the boards into place. Do not force the boards down. Check the
5.Carefully insert sensor cable clip into electronics board.
6.Tighten the three captive screws to anchor the two electronics boards. Ensure that
7.Reinsert the alarm and security jumpers into the correct location.
8.If the meter has LCD display option, insert the connector header into the LCD
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protruding from the bottom of the housing cavity.
boards.
alignment if they do not glide into place.
the SST washer is under the screw in the 2 o’clock position.
display board.
a.Remove jumpers from the electronics board.
b. Put the connector through the bezel on the electronics board.
c.Carefully press the LCD display onto the electronics board.
d. Tighten the two screws that retain the LCD display.
e.Insert the alarm and security jumpers in the correct location.
9.Replace the electronics board compartment cover.
5.6.3Replacing the electronics housing
The Rosemount 8800D electronics housing can be replaced easily when necessary. Use the
following procedure:
Tools needed
Screwdriver to disconnect wires
Tools to disconnect conduit
Note
Remove power before removing the electronics housing.
5
/32-in. (4 mm) hex wrench
5
/16-in. (8 mm) open end wrench
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Remove the electronics housing
1.Turn off the power to the Rosemount 8800D.
2.Remove the terminal block side cover.
3.Disconnect the wires and conduit from the housing.
4.Use a
5.Slowly pull the electronics housing no more than 1.5-in. (40 mm) from the top of
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May 2016
5
/32-in. (4 mm) hex wrench to loosen the housing rotation screws (at the base
of the electronics housing) by turning screws clockwise (inward) until they clear the
bracket.
the support tube.
6.Loosen the sensor cable nut from the housing with a
5
/16-in. (8 mm) open end
wrench.
Note
Lift the electronics housing until the sensor cable nut is exposed. Do not pull the housing
more than 1.5-in. (40 mm) from the top of the support tube. Damage to the sensor may
occur if this sensor cable is stressed.
Install the electronics housing
1.Verify that power to the Rosemount 8800D is off.
2.Screw the sensor cable nut onto the base of the housing.
3.Tighten the sensor cable nut with a
4.Place the electronics housing into the top of the support tube.
5.Use a hex wrench to turn the three hex socket screws counterclockwise (outward)
to engage support tube.
6.Place the access cover on the support tube (if applicable).
7.Tighten the screw on the access cover.
5
/16-in. (8 mm) open end wrench.
Troubleshooting
8.Connect conduit and wires.
9.Replace the terminal block cover.
10.Apply power.
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5.6.4Replacing the sensor
The sensor for the Rosemount 8800D is a sensitive instrument that should not be removed
unless there is a problem with it. If you must replace the sensor, follow these procedures
closely. Please consult the factory before removing the sensor.
Note
Be sure to fully check all other troubleshooting possibilities before removing the sensor.
Do not remove the sensor unless it is determined that a problem exists with the sensor
itself. The sensor may not fit on the post if it is removed and replaced more than two or
three times, or replaced incorrectly.
Also, please note that the sensor is a complete assembly and cannot be further
disassembled.
Tools needed
1
Suction or compressed air device
5
/32-in. (4 mm) hex wrench
5
/16-in. (8 mm) open end wrench
7
/16-in. (11 mm) open end wrench
3
/4-in. (19 mm) open end wrench (for 3- and 4-in. [80 and 100 mm] SSTwafers)
1
/8-in. (28 mm) open end wrench (for all other models)
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Small, soft bristle brush
Cotton swabs
Appropriate cleaning liquid: water or cleaning agent
5.6.5Replacing the sensor: removable support tube
The following procedure applies to flowmeters equipped with a removable support tube.
Note
Sensor cavity could contain line pressure if an abnormal failure has occurred inside the
meter body. See “Safety messages” on page 68 for complete warning information.
1.If the meter body is not a CriticalProcess™ Vortex (CPA Option) proceed to step 6.
2.Welded onto the side of the meter body is a valve. Move any nearby equipment
from the line of sight of the valve tube, if possible. Protect other equipment with
shielding, cover, or other type of protection.
3.Position all personnel away from the line of sight of the valve tube.
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C
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Note
There are numerous tube fittings that could connect to the tube if there is a need to drain
away process material. The tube on the valve has a 3/16” OD with a 0.035” wall thickness.
4.Using a
5.Process fluid venting from the valve tube indicates that there is process fluid in the
a.If there is no process fluid in the sensor cavity, continue to step 7.
b. If there is process fluid in the sensor cavity, immediately re-tighten the valve nut
6.De-pressurize the flow line.
7.Remove the electronics housing (see “Replacing the electronics housing” on
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7
/16-in. (11-mm) open end wrench, slowly loosen the valve nut. Back out the
nut until it stops. There is a set screw which prevents the nut from being completely
removed.
sensor cavity.
until process fluid stops venting. Do NOT tighten any further. STOP and contact
your Rosemount Sales Representative. The meter body may need to be replaced.
page 80).
Removable support tube
8.Loosen the four support tube anchor bolts with a 7/16-in. open end wrench. See
Figure 5-8.
Figure 5-8. Removable Support Tube Assembly
A.Removable support tube
B. Sensor nut
C. Sensor
D. Anchor bolts
E. Meter body
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9.Remove the support tube.
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10.Loosen and remove the sensor nut from the sensor cavity with a 1
open end wrench. (Use a
3
/4-in. (19-mm) open end wrench for 3- and 4-in. [80 and
1
/8-in. (28-mm)
100 mm] SST wafers.)
11.Lift the sensor from the sensor cavity. Be very careful to lift the sensor straight up.
Do not rock, twist, or tilt the sensor during removal; this will damage the
engagement diaphragm.
12.If Critical Process (CPA option) is present, tighten the valve to insure it is closed
after the new Vortex sensor is installed. It is recommended that the nut be torqued
to 50 in-lbs (5.7 N-m). Over tightening the valve nut could compromise its ability to
seal.
Cleaning the sealing surface
Before installing a sensor in the meter body, clean the sealing surface by completing the
following procedure. The metal o-ring on the sensor is used to seal the sensor cavity in the
event that process fluid should corrode through the meter body and enter the sensor cavity.
Be sure not to scratch or otherwise damage any part of the sensor, sensor cavity, or sensor
nut threads. Damage to these parts may require replacement of the sensor or meter body,
or may render the flowmeter dangerous.
Note
If you are installing a sensor that has been used before, clean the metal o-ring on the sensor
using the procedure below. If you are installing a newly purchased sensor, cleaning the
o-ring is not necessary.
1.Use a suction or compressed air device to remove any loose particles from the
sealing surface and other adjacent areas in the sensor cavity. See Figure 5-9.
Note
Do not scratch or deform any part of the sensor, sensor cavity, or sensor nut threads.
2.Carefully brush the sealing surface clean with a soft bristle brush.
3.Moisten a cotton swab with an appropriate cleaning liquid.
4.Wipe the sealing surface. Repeat several times if necessary with a clean cotton
swab until there is minimal dirt residue picked up by the cotton swab.
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Figure 5-9. O-Ring Sealing Surface in Sensor Cavity
A.Sealing surface
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Sensor installation
1.Carefully place sensor over the post in the sensor cavity.
2.Ensure that the sensor is centered on the post. See Figure 5-10 for an example of
improper installation and Figure 5-11 for an example of proper installation.
Note
If the sensor is installed in a high temperature application place the sensor in the sensor
cavity and wait for it to come up to temperature before seating the sensor on the post.
A.Sensor
B. Sensor cavity in flowmeter
C. Sensor not properly aligned
D. Sensor centerline is not aligned with flowmeter centerline. Damage to sensor will occur.
A.Sensor
B. Sensor cavity in flowmeter
C. Sensor centerline must be aligned with flowmeter centerline.
3.Sensor should remain as close to vertical as possible when applying force to seat.
See Figure 5-12.
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B
C
Apply Force
With Hand Until
Sensor is Seated
May 2016
Figure 5-12. Sensor Installation – Applying Force
A.Pressure
B. Sensor centerline must be aligned with flowmeter centerline.
C. Sensor properly seated
Reference Manual
00809-0100-4004, Rev DC
4.Manually push down on the sensor by applying equal pressure for engagement
onto the post.
5.Screw the sensor nut into the sensor cavity. Tighten the nut with a 1
open end torque wrench to 32 ft-lbs (43.4 N-m) (50 ft-lbs (67.8 N-m) for ANSI 1500
meter body). (Use a
3
/4-in. (19 mm) open end wrench for 3- and 4-in. [80 and 100
mm] SST wafers). Do not over-tighten the sensor nut.
6.Replace the support tube.
7.Tighten the four bolts that anchor the support tube in place with a
open end wrench.
8.Install the flowmeter electronics housing. See“Replacing the electronics housing”
on page 80.
5.6.6Remote electronics procedure
If the Rosemount 8800D electronics housing is mounted remotely, some replacement
procedures are different than for the flowmeter with integral electronics. The following
procedures are exactly the same:
Replacing the Terminal Block in the Housing (see page 77).
Replacing the Electronics Boards (see page 78).
Replacing the Sensor (see page 82).
1
/8-in. (28 mm)
7
/16-in. (11 mm)
88
To disconnect the coaxial cable from the meter body and electronics housing, follow the
instructions below.
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00809-0100-4004, Rev DC
Disconnect the coaxial cable at the meter
1.Remove the access cover on the meter body support tube if present.
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May 2016
2.Loosen the three housing rotation screws at the base of the meter adapter with a
5
/32-in. hex wrench by turning the screws clockwise (inward) until they clear the
bracket.
3.Slowly pull the meter adapter no more than 1.5-in. (40 mm) from the top of the
support tube.
4.Loosen and disconnect the sensor cable nut from the union using
5
a
/16-in. open end wrench.
Note
Do not pull the adapter more than 1.5-in. (40 mm) from the top of the support tube.
Damage to the sensor may occur if the sensor cable is stressed.
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B
C
D
E
G
H
I
F
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Figure 5-13. Coaxial Cable Connections
Reference Manual
00809-0100-4004, Rev DC
A.½ NPT conduit adapter or cable gland (supplied by customer)
B. Coaxial cable
C. Meter adapter
D. Union
E. Washer
F. Nut
G. Sensor cable nut
H. Support tube
I. Meter body
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Reference Manual
00809-0100-4004, Rev DC
Detach the meter adapter
The above instructions will provide access to the meter body. Use the following steps if it is
necessary to remove the coaxial cable:
1.Loosen and remove the two screws that hold the union onto the meter adapter and
2.Loosen and remove the sensor cable nut from the other end of the union.
3.Loosen and disconnect the conduit adapter or cable gland from the meter adapter.
Attach the meter adapter
1.If you are using a conduit adapter or cable gland, slide it over the plain end of the
2.Slide the meter adapter over the coaxial cable end.
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May 2016
pull the union away from the adapter.
coaxial cable (the end without a ground wire).
3.Use a
4.Place the union onto the two screws extending out of the meter adapter and
5
/16-in. (8 mm) open end wrench to securely tighten the sensor cable nut onto
one end of the union.
tighten the two screws.
Connect the coaxial cable at the meter body
1.Pull the sensor cable out of the support tube slightly and securely tighten the
sensor cable nut onto the union.
Note
Do not stretch the sensor cable over 1.5-in. (40 mm) beyond the top of the support tube.
Damage to the sensor may occur if the sensor cable is stressed.
2.Place the meter adapter into the top of the support tube and line up the screw
holes.
3.Use a hex wrench to turn the three adapter screws counterclockwise (outward) to
engage the support tube.
4.Replace the access cover on the support tube (6-8-in. wafer style only).
5.Tighten the conduit adapter or cable gland into the meter adapter.
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C
D
G
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B
E
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5.6.7Coaxial cable at the electronics housing
Remove the coaxial cable from the electronics housing
1.Loosen the two housing screws from the housing adapter.
2.Remove the housing adapter from the housing.
3.Loosen and remove the coaxial cable nut from the base of the electronics housing.
4.Remove the coaxial cable ground connection from the housing base by loosening
the housing base screw that is connecting it to the housing base.
5.Loosen the conduit adapter (or cable gland) from the housing adapter.
Figure 5-14. Remote Electronics Exploded View
Reference Manual
00809-0100-4004, Rev DC
A.Ground connection
B. Housing base screw
C. Housing adapter
D. Housing adapter screws
E. Conduit adapter (optional—supplied by customer)
F. Coaxial cable nut
G. Electronics housing
92
Troubleshooting
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