Startup and Configuration 3.1
General Programming Information 3.2-3.4
BASIC MENU 3.5-3.14
OUTPUT MENU 3.15-3.18
AUX COMM MENU 3.18-3.22
SENSOR MENU 3.23
SECURITY MENU 3.23
SERVICE MENU 3.24
Liquid Sound Speed 3.25
Signal Strength 3.25-3.26
Setting ZERO Flow 3.27
Correction Factor Entry 3.27-3.28
DISPLAY MENU 3.29
Software Utility Operation
UltraLink 4.1-4.12
Part 5 - MultiChannel
Appendix
DataLink 4.13-4.15
Multi-Channel Operation 5.1-5.5
Appendix
Keypad Interface Map
Fluid Characteristic Table
TFX Error Codes
Modbus Protocol
Pipe Dimension Chart: Cast Iron
Pipe Dimension Chart: ST, SS, PVC
Velocity to Volumetric Conversion
RTD-BTU Option
Statement of Warranty
Customer Service
Rev. 8/02 -1.2- TFXM
QUICK-START OPERATING INSTRUCTIONS
Transducer
Location
This manual contains detailed operating instructions for all
aspects of the TFXM instrument. The following condensed
instructions are provided to assist the operator in getting the
instrument started up and running as quickly as possible. This
pertains to basic operation only. If specific instrument features
are to be used or if the installer is unfamiliar with this type of
instrument, refer to the appropriate section in the manual for
complete details.
1. TRANSDUCER LOCATION
A. In general, select a mounting location on the piping system
with a minimum of 10 pipe diameters (10 X the pipe inside
diameter) of straight pipe upstream and 5 straight
diameters downsteam. The installation location should
also be positioned so that the pipe remains full when the
liquid is flowing through it. On horizontal pipes the transducers should be located on the sides of the pipe. See Figure 1.2. See Table 2.1 for additional configurations.
B. Select a mounting method, Figure 1.1, for the transducers
from Table 2.2, based on pipe size and liquid
characteristics. In General, select W-Mount for plastic and
steel pipes flowing clean, non-aerated liquids in the 1-6
inch [25-150 mm] internal diameter range. Select V-Mount
for pipes of all materials and most liquids in pipe sizes from
3-10 inches [75-400 mm]. Select Z-Mount for pipes larger
than 10 inches [400 mm].
C. For each measuring channel integrated into the TFXM, en-
ter the parameters listed in Table 1.1 via the TFXM keypad
or UltraLink software utility.
D. Record the value calculated and displayed as Transducer
Spacing/XDCR SPC.
W-Mount V-MountZ-Mount
Figure 1.1
Rev. 8/02 -1.3- TFXM
QUICK-START OPERATING INSTRUCTIONS
Figure 1.2
Transducer
Orientation
TABLE 1.1
1. Transducer mounting method
2. Pipe O.D. (Outside Diameter)
3. Pipe wall thickness
4. Pipe material
5. Pipe sound speed*
6. Pipe relative roughness*
* Nominal values for these parameters are included within the TFXM
operating system. The nominal values may be used as they appear or
may be modified if exact system values are known.
7. Pipe liner thickness
8. Pipe liner material
9. Fluid type
10. Fluid sound speed*
11. Fluid viscosity*
12. Fluid specific gravity*
2. PIPE PREPARATION AND TRANSDUCER MOUNTING
A. The piping surface where the transducers are to be
mounted needs to be clean and dry. Remove loose scale,
rust and paint to ensure satisfactory acoustical bonds.
B. Apply a 3/8” [8 mm] wide bead of couplant lengthwise onto
the transducer faces. Place each transducer onto the pipe
ensuring proper linear and radial placement.
Connections
Startup
C. Tighten the transducer mounting straps sufficiently to
squeeze the couplant out along the flat surface of the transducer, filling the void between the transducer and the pipe
wall.
3. TRANSDUCER/POWER CONNECTIONS
A. If additional cable is to be added to the transducers, utilize
RG59 (75 Ohm) cable splices and ensure that both cables
are of equal length.
B. Refer to the TFXM Field Wiring Diagram, Figure 1.4, and
the terminal block labels for proper power and transducer
connections. Verify that the voltage level listed on the
product identification label—located on the side of the instrument enclosure– matches the power source where
connection is being made.
4. INITIAL SETTINGS AND POWER UP
A. Apply power to the instrument.
B. Verify that SIG STR is greater than 2% on all channels.
C. Verify that measured liquid SSPD is within 0.5% of the
configuration value on all channels.
D. Input proper units of measure and I/O data.
Rev. 8/02 -1.4- TFXM
PART 1 - INTRODUCTION
General
The TFXM ultrasonic flow meter is designed to measure the fluid
velocity of liquid within closed conduit. The transducers are a
non-contacting, clamp-on type, which will provide benefits of nonfouling operation and ease of installation.
TFXM transit time flowmeters utilize two transducers that function
as both ultrasonic transmitters and
receivers. The transducers are
clamped on the outside of a
closed pipe at a specific distance
from each other . The transducers
can be mounted in V-mode where
the sound transverses the pipe
two times, W-mode where the
sound transverses the pipe four
times, or in Z-mode where the transducers are mounted on
opposite sides of the pipe and the sound crosses the pipe once.
This selection is based on pipe and liquid characteristics. The
flowmeter operates by alternately transmitting and receiving a
frequency modulated burst of sound energy between the two
transducers (contrapropogation) and measuring the time interval
that it takes for sound to travel between the two transducers. The
difference in the time interval measured is directly related to the
velocity of the liquid in the pipe.
Application
Versatility
The TFXM flow meter can be successfully applied on a wide
range of metering applications. The simple to program transmitter
allows the standard product to be used on pipe sizes ranging from
2 - 100 inch [ 50 - 2540 mm ] pipe. A variety of liquid applications
can be accommodated: ultrapure liquids, potable water,
chemicals, raw sewage, reclaimed water, cooling water, river
water, plant effluent, etc. Because the transducers are noncontacting and have no moving parts, the flow meter is not
affected by system pressure, fouling or wear. Standard DTTN
transducers are rated to 300?F [150?C]. Temperatures to 450?F
[230?C] can be accommodated with Series DTTH transducers.
Please consult the Dynasonics factory for assistance.
Rev. 8/02 -1.5- TFXM
PART 1 - INTRODUCTION
User Safety
Data Integrity
Product
Identification
Product Matrix
D T F X M
Channels
1) One internal Channel
2) Two internal Channels
Power Supply
A) 115 VAC
B) 230 VAC
C) 100 VAC
E) 9-28 VDC
Channel 1 Input/Output
(RS485 is Standard on all Models)
Channel 2 Input/Output [DTFXM2]
N) none—[DTFXM1 or if “1” is selected above]
1) 4-20mA (secondary)
2) Dual-Relay (secondary)
3) Rate Pulse
4) RS232
6) Data Logger
7) Heat Flow
The TFXM employs modular construction and provides
electrical safety for the operator. The display face and keypad
contains voltages no greater than 10 Vdc. The wiring access
panel provides users access to wiring terminals without risking
damage to flow meter circuits. Disconnect electrical power
before opening the instrument enclosure.
Non-volatile flash memory retains all user-entered
configuration values in memory indefinitely, even if power is
lost or turned off. Password protection is provided as part of
the Security menu and prevents inadvertent configuration
changes or totalizer resets.
The serial number and complete model number of your TFXM
is located on the side of the instrument enclosure. Should
technical assistance be required, please provide the
Dynasonics Customer Service Department with this
information.
D T T
Approvals
N) Ordinary Area
X) Class 1 DIV1
(pending)
Options
N) None
Construction
N) Standard
H) High Temp
Cable Length
020) 20 feet [6.1 m]
050) 50 feet [15 m]
100) 100 feet [30 m]
Maximum length: 990 feet [306 m]
in 10 foot [3 m] increments
Maximum length: 990 feet [ 306 m]
in 10 foot [3 m] increments
Options
N) standard
X) Intrinsically Safe
Rev. 8/02 -1.6- TFXM
PART 1 - SPECIFICATIONS
Rev. 8/02 -1.7- TFXM
PART 1 - TRANSMITTER INSTALLATION
Transmitter
Installation
After unpacking, it is recommended to save the shipping carton
and packing materials in case the instrument is stored or reshipped. Inspect the equipment and carton for damage. If there
is evidence of shipping damage, notify the carrier immediately.
The enclosure should be mounted in an area that is convenient
for servicing, calibration or for observation of the LCD readout.
1. Locate the transmitter within the length of transducer cable
that was supplied with the TFXM system. If this is not
possible and additional cable is to be added to the transducers, utilize RG59 (75 Ohm) cable and splices. Ensure that
both cables are of equal length . If additional cable cannot be
added in the field, contact the Dynasonics factory to
coordinate an exchange for the proper cable length.
Transducer cables that are up to 990 feet [300 meters] are
available.
2. Mount the TFXM transmitter in a location that is:
? ? Where little vibration exists.
? ? Protected from falling corrosive fluids.
? ? Within ambient temperature limits -40 to 185°F [-40 to 85°C]
? ? Out of direct sunlight. Direct sunlight may increase
temperatures within the transmitter to above the maximum
limit.
3. Mounting: Refer to Figure 1.3 for enclosure and mounting
dimension details. Ensure that enough room is available to
allow for maintenance and conduit entrances. Secure the
enclosure to a flat surface with four appropriate fasteners.
4. Conduit holes. Conduit hubs should be used where cables
enter the enclosure. Holes not used for cable entry should be
sealed with plugs.
NOTE: Use NEMA 4 [ IP65 ] rated fittings/plugs to maintain the
water tight integrity of the enclosure. Generally, the left conduit
hole (viewed from front) is used for line power; the center conduit
holes for transducer connections and the right hole s are utilized
for I/O wiring.
To access terminal strips for electronic connections, loosen the six
screws in the wiring access panel located on the bottom of the enclosure.
1. Guide the transducer cables through the transmitter conduit
holes located in the bottom of the enclosure. Secure the
transducer’s flexible conduit with the supplied conduit nut (if
flexible conduit was ordered with the transducer) or tighten the
cord grip on the coaxial cable.
2. The terminals within TFXM are a screw terminal type. Connect
the appropriate wires to the corresponding screw terminals in
the transmitter. Observe UP/DOWN and CH1 or CH2
orientation. CH1 and CH2 correspond to the measuring channels contained within the TFXM flow meter. DTFXM1 flow me-
4.18
(106.2)
Rev. 8/02 -1.9- TFXM
PART 1 - TRANSMITTER INSTALLATION
Figure 1.4
TFXM Wiring Diagram
Rev. 8/02 -1.10- TFXM
PART 1 - TRANSMITTER INSTALLATION
Transmitter
Power
Connections
DC Power
Supply
ters only have one measuring channel, so transducers will only
be connected to the CH1 terminals. DTFXM2 flow meters
have two measuring channels, so transducers will be connected to both the CH1 and CH2 terminals. See Figure 1.4.
Secure wires by tightening to between 0.5 and 0.6 Nm of
torque.
NOTE: The transducer cable s carry low level signals. It is typically not recommended to add additional cable to the factory supplied coaxial cables. If an exchange is not possible and additional
cable is to be added to the transducers, utilize RG59 (75 Ohm)
cable and splices. Ensure that both cables are of equal length. If
additional cable cannot be added in the field, contact the
Dynasonics factory to coordinate an exchange for the proper cable
length. Cables to 990 feet [ 300 meters ] are available.
Connect line power to the two screw terminals marked AC IN and
the one marked GROUND in the transmitter. See Figure 1.4.
Utilize the conduit hole on the left side of the enclosure for this
purpose. Use wiring practices that conform to local codes
(National Electric Code Hand book in the USA). Use only the
standard three wire connection. The ground terminal grounds the
instrument, which is mandatory for safe operation.
CAUTION: Any other wiring method may be unsafe or cause
improper operation of the instrument.
It is recommended not to run line power with other signal wires
within the same wiring tray or conduit.
NOTE: This instrument requires clean electrical line power. Do
not operate this unit on circuits with noisy components (i.e.
Fluorescent lights, relays, compressors, variable frequency drives,
etc.).
The TFXM can be operated from a 10-28 Vdc source, as long as it
is capable of supplying at least 8 Watts. DC power is connected
to the screw terminals labeled +DC IN and –DC IN on the terminal
block located on the left side of the enclosure. Observe proper
polarity in making these connections . It is recommended that a
1 A fuse be installed in DC connections to protect the TFXM and
Rev. 8/02 -1.11- TFXM
PART 1 - TRANSMITTER INSTALLATION
Uninterruptible
Power
Configuration
the battery source from damage should a fault occur. See the
Wiring Diagram located at Figure 1.4.
Both AC and a 12 VDC battery power can be connected to the
TFXM to facilitate an uninterruptible power source to the flow meter. The flow meter will operate on the AC power source until AC
power is interrupted—at that point the flow meter will continue to
operate on the battery until AC power is restored. In this configuration the battery will not be trickle-charged by the TFXM. Batteries are rated in Amp Hour capacity. Select a battery that can
maintain operation of the flow meter for the length of anticipated
AC power outages.
Example: The TFXM draws approximately 700 mA of current at
12 VDC. A 7 Amp Hour 12 Volt battery will be able to operate the
TFXM for approximately 7 Amp Hours / 0.7 Amps = 10 Hours.
As an alternate uninterruptible configuration, connect a battery to
the TFXM as the primary source of power and permanently connect a trickle-charger to the battery. Ensure that the tricklecharger is rated to output a minimum of 10 Watts.
Rev. 8/02 -1.12- TFXM
PART 1 - INPUT/OUTPUT CONFIGURATION
General
DIP-Switch
Configuration
4-20 mA
Output
Configuration
Series TFXM contains integrated RS485 communications, one 420 mA output per measurement channel and two SPDT relays per
measurement channel. Other auxiliary input/output options are
available. All outputs are 2,500 V optically isolated from TFXM
power and Earth grounds -- eliminating the potential for ground
loops and reducing the chance of severe damage in the event of
an electrical surge.
Auxiliary options that are available include: secondary 4-20 mA,
secondary dual-relay, rate pulse, RS232C, a 200,000-event
datalogger and BTU-Pro heat-delivered option. In order for an
Auxiliary output option to be operational, either the 4-20mA or the
dual-relays must be disabled for that measurement channel. All
outputs are field configurable by utilizing the keyboard or
ULTRALINK interface. Field wiring connections to the outputs are
made to the terminal blocks located within the wiring access
panel.
The two, three-position DIP-switches located within the wiring access panel configure the TFXM for input/output options. The flow
meter is shipped from the Dynasonics factory with the options ordered configured and installed. Typically no adjustments to these
switches are necessary. The switch lever to the left in each DIP
switch block is utilized to configure the 4-20 mA output as either
internally or externally powered. The other two switches in each
DIP-switch block are used to disable either the 4-20 mA or dualrelay output should an Auxiliary output be installed within the
TFXM enclosure.
The 4-20 mA Output interfaces with virtually all recording and
logging systems by transmitting an analog current signal that is
proportional to system flow rate. The output can be configured to
be either internally or externally powered by setting the left DIP switch at SW1 for Channel 1 and SW2 for Channel 2. Refer to the
Field Wiring Diagram at Figure 1.4 for terminal block and DIPswitch locations.
When powered from internal power, the 4-20 mA output can provide loop current for a maximum of 800 ohms of total loop resistance. When powered externally, the maximum load varies with
the level of the voltage source. The insertion loss of the 4-20 mA
circuit is 5Vdc, so the maximum loop load that can be powered is
calculated by the equation:
Rev. 8/02 -1.13- TFXM
PART 1 - INPUT/OUTPUT CONFIGURATION
Max Loop Load = (External Supply Voltage - 5)
0.02
Cable used to transmit 4-20 mA signals should be routed in wiring
trays or conduits that carry instrumentation signals. It should not
be run with AC power or other potential sources of noise. Very
long cables can be accommodated, but the resistance of the wire
must be added to the total loop load to ensure that adequate
power is available to power the load. Shielding of the wires carrying 4-20mA signals are typically not necessary, but is recommended when wires must be run past or in proximity of electrically
noisy circuits.
Control
Relays
Configuration
RS485
Configuration
Two independent SPDT (single-pole, double-throw, Form C)
relays are integrated into the TFXM for each measuring channel
installed within the flow meter enclosure. The relay operations are
user configured via software to act in a flow rate alarm, signal
strength alarm or totalizer/batching mode. See Figure 1.4 for ter-
minal block locations. The relays are rated for 200 Vac max. and
have a current rating of 0.5 A resistive load [175 Vdc @ 0.25 A
resistive]. It is highly recommended that a slave relay be utilized
whenever the control relays are used to control inductive loads
such as solenoids and motors.
An RS485 driver and Modbus protocol is utilized by the TFXM to
communicate between the two channels located within the TFXM
flow meter enclosure (if so equipped), communicate with satellite
TFX flow meters and to interface with a personal computer system. The TFXM can be used as the Primary meter (Master) to
program other Secondary (Slave) meters located on the RS485
network. The TFXM contains a feature that permits up to 8 flow
measurement channels to be mathematically manipulated. Software configuration is covered in Section 4 of this manual.
RS485 interconnections are made at the terminal block located
within the TFXM Field Wiring Access Panel. See Figure 1.4. Utilize two conductor plus shield wiring cable for this purpose. Avoid
running these cables in wiring trays or conduits carrying AC power
or other electrically noisy devices.
Rev. 8/02 -1.14- TFXM
PART 2 - TRANSDUCER POSITIONING
General
The transducers that are utilized by the Series TFXM contain
piezoelectric crystals for transmitting and receiving ultrasound
signals through walls of liquid piping systems. DTTN and
DTTH transducers are relatively simple and straight-forward to
install, but spacing and alignment of the transducers is critical to
the system's accuracy and performance. Extra care should be
taken to ensure that these instructions are carefully executed.
Mounting of the DTTN and DTTH clamp-on ultrasonic transit
time transducers is comprised of four steps. In general, these
steps consist of:
1. Selection of the optimum location on a piping system.
2. Entering the pipe and liquid parameters into either the
optional software utility (UltraLink) or keying in the
parameters into the TFXM keypad. The software embedded
in UltraLink and TFXM will calculate proper transducer
spacing based on these entries.
3. Pipe preparation and transducer mounting.
1. Mounting Location
The first step in the installation process is the selection of an
optimum location for the flow measurement to be made. For
this to be done effectively, a basic knowledge of the piping
system and its plumbing are required.
An optimum location would be defined as a piping system that
is completely full of liquid when measurements are being taken
and has lengths of straight pipe such as those described in
TABLE 2.1. The optimum straight pipe diameter
recommendations apply to pipes in both horizontal and vertical
orientation.
TFXM transit time flowmeters utilize two transducers that
function as both ultrasonic transmitters and receivers. The
transducers are clamped on the outside of a closed pipe at a
specific distance from each other. The transducers can be
mounted in V-mode where the sound traverses the pipe two
times, W-mode where the sound traverses the pipe four times,
or in Z-mode where the transducers are mounted on opposite
Rev. 8/02 - 2. 1 - TFXM
PART 2 - TRANSDUCER POSITIONING
sides of the pipe and the sound crosses the pipe once.
See Figures 2.1 -2.3. This selection is based on pipe and liquid
characteristics. The flowmeter operates by alternately
transmitting and receiving a frequency modulated burst of
sound energy between the two transducers and measuring the
time interval that it takes for sound to travel between the two
Table 2.1
1
1
The TFXM system will provide repeatable measurements on piping systems that do not meet these
requirements, but the accuracy of these readings may be influenced to various degrees.
Rev. 8/02 - 2. 2 - TFXM
PART 2 - TRANSDUCER POSITIONING
V-Mount
Configuration
transducers.
Figure 2.1 - Transducer V-Mount
W-Mount
Configuration
Figure 2.2 - Transducer W-Mount
Rev. 8/02 - 2. 3 - TFXM
PART 2 - TRANSDUCER POSITIONING
Z-Mount
Configuration
Figure 2.3 Z-Mount. Direct type — transducers mounted on
opposite sides of the pipe. See Table 2.2 for a list of Initial
Transducer Mounting Modes.
Figure 2.3 - Transducer Z-Mount
Rev. 8/02 - 2. 4 - TFXM
PART 2 - TRANSDUCER POSITIONING
Transducer Mount
Initial Transducer Mounting Modes
Pipe Material Pipe Size Liquid Composition*
Table 2.2
Mode
W-mode
(Weakest signal,
longest time of
flight)
Plastic (all types)
Carbon Steel
Stainless Steel
Copper
Ductile Iron
Cast Iron
V-mode Plastic (all types)
Carbon Steel
Stainless Steel
Copper
Ductile Iron
Cast Iron
Z-mode
(Strongest signal,
shortest time of
flight)
Plastic (all types)
Carbon Steel
Stainless Steel
Copper
Ductile Iron
Cast Iron
2-6 in. (50-150 mm)
2-4 in. (50-100 mm)
2-6 in. (50-150 mm)
2-6 in. (50-150 mm)
Not recommended
Not recommended
6-30 in. (150-750 mm)
4-24 in. (100-600 mm)
6-30 in. (150-750 mm)
6-30 in. (150-750 mm)
3-12 in. (75-300 mm)
3-6 in. (75-150 mm)
>30 in. (>750 mm)
>24 in. (>600 mm)
>30 in. (>750 mm)
>30 in. (>750 mm)
>12 in. (>300 mm)
>6 in. (>150 mm)
*If the liquid to be measured is high in TSS (total suspended solids) or aerated, more than
likely the installation will require configuration and setup in the next category lower than the
recommendations in this chart. For example, if the pipe is 10-inch (250 mm) carbon steel
and the liquid contains concentrations of suspended solids, a Z -mode will probably yield
the best performance results, not the V-mode suggested in the chart.
Rev. 8/02 - 2. 5 - TFXM
PART 2 - TRANSDUCER POSITIONING
2. Transducer Spacing
The TFXM system calculates proper transducer spacing by
utilizing piping and liquid information entered by the user. This
information can be entered via the keypad on TFXM or via the
UltraLink Windows software utility.
IMPORTANT: Since the time interval being measured is
influenced by the transducer spacing, it is critical that the
transducer spacing be measured on the pipe accurately to
assure optimum performance from the TFXM system.
The following information will be required before programming
the instrument:
1. Transducer mounting configuration
2. Pipe O.D. (Outside Diameter)
3. Pipe wall thickness
4. Pipe material
5. Pipe sound speed1
6. Pipe relative roughness1
7. Pipe liner thickness
8. Pipe liner material
9. Fluid type
10. Fluid sound speed1
11. Fluid viscosity1
12. Fluid specific gravity1
1
Nominal values for these parameters are included within the TFXM operating system. The nominal values may be used as they appear or may be
modified if exact system values are known.
Rev. 8/02 - 2. 6 - TFXM
Keypad
PART 2 - TRANSDUCER POSITIONING
The TFXM can be configured through the keypad interface or
by using the UltraLink Windows® software utility. Of the two
methods of configuration, the UltraLink software utility provides
more advanced features and offers the abililty to store and
transfer meter configurations between TFXM meters.
SOFT KEYS
ARROW KEYS
INFRARED WINDOW
MEASUREMENT
CHANNEL SELECTION
Figure 2.4
Keypad Description
The following “Soft Key” menu items will be displayed immediately above the two keys located in the lower corners of the
Graphics Display. See Figure 2.4.
?? The (soft)MENU key is pressed from RUN mode to enter
PROGRAM mode. The (soft)EXIT key is pressed in
PROGRAM mode to exit configuration parameters and
menus. If changes to any configuration parameters have
been made, the user will be prompted with a SAVE? (soft)
YES or (soft)NO when returning to RUN mode. If no
changes have been made, the user will not be prompted to
SAVE.
Rev. 8/02 - 2. 7 - TFXM
PART 2 - TRANSDUCER POSITIONING
1. The UP/DOWN ARROW keys are used to scroll through
menus and configuration parameters. The ARROW keys
can also be used to adjust parameter numerical values. In
RUN mode the UP/DOWN ARROW keys are used to adjust
the display contrast level.
2. The Numerical Keypad is used for entering numerical
values.
3. The (soft)ACCEPT key is used to
?? accept configuration parameter changes.
5. The (soft)CHAN key is used to
?? Configure the engineering units on the graphics display—
Press the (soft)SELECT key from RUN mode to highlight the
engineering unit presently being displayed on the graphics
display (pressing the SELECT key multiple times will toggle
the highlighted unit from line to line). Use the UP/DOWN
ARROW keys to select display units of
6. When the (soft)MENU key is pressed, the user is prompted
for the measurement channel that is to be configured. Use
the UP/DOWN arrow keys to display the measurement
channel that requires configuration. Press (soft)ACCEPT
when the required channel is visible in the center of the
display.
Rev. 8/02 - 2. 8 - TFXM
PART 2 - TRANSDUCER POSITIONING
The BASIC menu contains all of the configuration parameters
necessary to make the transducer spacing calculation.
UNITS Entry
IMPORTANT!
UNITS
ENGLSH
METRIC
Installs a global measurement standard into the operation of the
instrument. The choices are either English or Metric measurements.
?? Select ENGLSH if all configurations (pipe sizes, etc.) are to
be made in inches. Select METRIC if the meter is to be configured in millimeters.
?? The ENGLSH/METRIC selection will also configure the
TFXM to display sound speeds in pipe materials and liquids
as either feet per second or meters per second respectively.
NOTE: If the UNITS entry has been changed from ENGLSH to
METRIC or from METRIC to ENGLSH, the entry must be saved
and the instrument reset (power cycled or System Reset entered) in order for the TFXM to initiate the change in operating
units. Failure to save and reset the instrument will lead to improper transducer spacing calculations and an instrument that
may not measure properly.
Transducer
XDCR MNT -- Transducer Mounting Method
Mount
Configuration
V
W
Z
Selects the mounting orientation for the transducers. The selection of an appropriate mounting orientation is based on pipe and
liquid characteristics. Refer to Figures 2.1 -2.3 and Table 2.2 in
this manual.
Rev. 8/02 - 2. 9 - TFXM
PART 2 - TRANSDUCER POSITIONING
Pipe O.D. Entry
Pipe Wall Entry
Pipe Material
Entry
Pipe Sound
Speed Entry
PIPE OD -- Pipe Outside Diameter Entry
ENGLSH (Inches)
METRIC (Millimeters)
Enter the pipe outside diameter in inches if ENGLSH was selected as UNITS; in millimeters if METRIC was selected.
Enter the pipe wall thickness in inches if ENGLSH was selected
as UNITS; in millimeters if METRIC was selected.
PIPE MAT -- Pipe Material Selection
CARBON S - Carbon Steel
STAINLES - Stainless Steel
CAST IRO - Cast Iron
DUCTILE - Ductile Iron
COPPER - Copper
PVC - Polyvinylchloride
PVDF LOW - Low Density Polyvinylidene Flouride
PVDF HI - High Density Polyvinylidene Flouride
ALUMINUM - Aluminum
ASBESTOS - Asbestos Cement
FIBERGLA - Fiberglass
OTHER
This list is provided as an example. Additional materials are being added continuously. Select the appropriate pipe material
from the list or select OTHER if the material is not listed.
PIPE SS -- Speed of Sound in the Pipe Material
ENGLSH (Feet per Second)
METRIC (Meters per Second)
Allows adjustments to be made to the speed of sound in the
pipe wall. If the UNITS value was set to ENGLSH, the entry is
in FPS (feet per second). METRIC entries are made in MPS
Rev. 8/02 - 2. 10 - TFXM
PART 2 - TRANSDUCER POSITIONING
(meters per second).
If a pipe material was chosen from the PIPE MAT list, a nominal
value for speed of sound in that material will be automatically
loaded. If the actual sound speed rate is known for the application piping system and that value varies from the automatically
loaded value, the value can be revised.
If OTHER was chosen as PIPE MAT, a PIPE SS will need to be
entered.
Pipe
Roughness
Entry
Liner Thickness
Entry
PIPE R -- Pipe Material Relative Roughness
UNITLESS VALUE
The DTFXM provides Reynolds Number compensation in its
flow measurement calculation. The ratio of average surface
imperfection as it relates to the pipe internal diameter is used in
this compensation.
Linear RMS measurement of the pipe
PIPE R = internal wall surface Internal Diameter of the pipe
If a pipe material was chosen from the PIPE MAT list, a nominal
value relative roughness in that material will be automatically
loaded. If the actual roughness is known for the application piping system and that value varies from the automatically loaded
value, the value can be revised.
If OTHER was chosen as PIPE MAT, a PIPE R may need to be
entered.
LINER T -- Pipe Liner Thickness Entry
ENGLSH (Inches)
METRIC (Millimeters)
Enter the pipe liner thickness. Enter this value in inches if
ENGLSH was selected as UNITS; in millimeters if METRIC was
selected.
Rev. 8/02 - 2. 11 - TFXM
PART 2 - TRANSDUCER POSITIONING
Liner Material
Entry
Liner Sound
Speed Entry
Fluid Type Entry
[If a LINER Thickness was selected]
LINER MAT - Liner Material
TAR EPOXY
RUBBER
MORTAR
POLYPROPYLENE
POLYSTYROL
POLYSTYRENE
POLYESTER
POLYETHYLENE
EBONITE
TEFLON
Other
This list is provided as an example. Additional materials are being added continuously. Select the appropriate material from
the list or select OTHER if the liner material is not listed.
LINER SS -- Speed of Sound in the Liner
ENGLSH (Feet per Second)
METRIC (Meters per Second)
Allows adjustments to be made to the speed of sound in the
liner. If the UNITS value was set to ENGLSH, the entry is in
FPS (feet per second). METRIC entries are made in MPS
(meters per second).
If a liner was chosen from the LINER MAT list, a nominal value
for speed of sound in that media will be automatically loaded. If
the actual sound speed rate is known for the pipe liner and that
value varies from the automatically loaded value, the value can
be revised.
FL TYPE - Fluid/Media Type
TAP WATER
SEWAGE
SEA WATE
KEROSENE
GASOLINE
FUEL OIL
CRUDE OI
PROPANE
Rev. 8/02 - 2. 12 - TFXM
PART 2 - TRANSDUCER POSITIONING
Fluid Sound
Speed Entry
BUTANE
OTHER
This list is provided as an example. Additional liquids are being
added continuously. Select the appropriate liquid from the list
or select OTHER if the liquid is not listed.
FLUID SS -- Speed of Sound in the Fluid
ENGLSH (Feet per Second)
METRIC (Meters per Second)
Allows adjustments to be made to the speed of sound in the liquid. If the UNITS value was set to ENGLSH, the entry is in FPS
(feet per second). METRIC entries are made in MPS (meters
per second).
If a fluid was chosen from the FL TYPE list, a nominal value for
speed of sound in that media will be automatically loaded. If the
actual sound speed rate is known for the application fluid and
that value varies from the automatically loaded value, the value
can be revised.
Fluid Viscosity
Entry
If OTHER was chosen as FL TYPE, a FLUID SS will need to be
entered. A list of alternate fluids and their associated sound
speeds are located in the Appendix at the back of this manual.
FLUID VI -- Absolute Viscosity the Fluid
cps
Allows adjustments to be made to the absolute viscosity of the
liquid.
If a fluid was chosen from the FL TYPE list, a nominal value for
viscosity in that media will be automatically loaded. If the actual
viscosity is known for the application fluid and that value varies
from the automatically loaded value, the value can be revised.
If OTHER was chosen as FL TYPE, a FLUID VI will need to be
entered. A list of alternate fluids and their associated viscosities
are located in the Appendix at the back of this manual.
Rev. 8/02 - 2. 13 - TFXM
PART 2 - TRANSDUCER POSITIONING
Fluid Specific
Gravity Entry
Transducer
Spacing
Calculation
SP GRVTY -- Fluid Specific Gravity Entry
unitless
Allows adjustments to be made to the specific gravity (density)
of the liquid.
If a fluid was chosen from the FL TYPE list, a nominal value for
specific gravity in that media will be automatically loaded. If the
actual specific gravity is known for the application fluid and that
value varies from the automatically loaded value, the value can
be revised.
If OTHER was chosen as FL TYPE, a SP GRVTY may need to
be entered if mass flows are to be calculated. A list of alternate
fluids and their associated specific gravities are located in the
Appendix at the back of this manual.
This value represents the one-dimensional linear measurement
between the transducers (the upstream/downstream measurement that runs parallel to the pipe). This value is in inches if
ENGLSH was selected as UNITS; in millimeters if METRIC was
selected. This measurement is taken between the lines which
are scribed into the side of the transducer blocks.
Important note for pipe sizes under 2 inches [50 mm]. If the
transducer spacing that is calculated is lower than 2.65 inches
[67 mm], enter W-mount as the transducer mount method or
enter V-mount and place the transducers at 2.65 inches [67
mm]. See Page 3.11 for additional details.
Rev. 8/02 - 2. 14 - TFXM
PART 2 - TRANSDUCER POSITIONING
UltraLink Entry
UltraLink Data Entry
The UltraLink Windows®-based software utility provides an efficient means for entering piping and liquid parameters through
the use of pop-up window/pull -down menu structures. Data can
be entered into UltraLink, stored, later retrieved and downloaded
at the TFXM installation site (provided that UltraLink and TFXM
communications are not enabled at the time of data entry) or it
can be downloaded immediately to the TFXM meter (provided
that UltraLink and TFXM communications are enabled during
data entry).
To install UltraLink and establish communications with a PC,
please follow the instructions detailed in Section 4 of this manual.
The system information required for entry into the UltraLink
package is identical to that required for Keypad Entry covered in
the previous section. See pages 2.3.
After initializing UltraLink, click on the button labeled Config.
The window shown in Figure 2.5 will appear. Enter the pipe and
liquid parameters into the appropriate data fields in the Basic
window. The correct transducer spacing will appear in the
Transducer - Spacing data field.
After all data fields have been entered Download to the TFXM
or FileSave to a disk by clicking on the appropriate button in the
Config window. Download is not possible unless communica-
tions are enabled between the TFXM and UltraLink. Communications are enabled when a green OK is indicated in the lower
right-hand COMM: status box. If communications are not en-
abled, please review the documentation that is detailed in Section 4 of this manual.
After selecting an optimal mounting location, Step 1, and successfully determining the proper transducer spacing, Step 2, the
transducers can now be mounted onto the pipe.
The DTT transducers need to be properly oriented on the pipe
to provide optimum reliability and performance. On horizontal
pipes, the transducers should be mounted 180 radial degrees
from one another and at least 45 degrees from the top-deadcenter and bottom-dead-center of the pipe. See Figure 2.5.
Figure 2.5 does not apply to vertically oriented pipes.
Figure 2.5 Transducer mounting locations on
horizontal pipe.
Before the transducers are bonded to the pipe surface, two ar-
Pipe
Preparation
Rev. 8/02 - 2. 17 - TFXM
eas slightly larger than the flat surface of the transducer heads
must be cleaned of all rust, scale and moisture. Finish the surface with some emery paper, and wipe the surface with a degreasing solvent such as trichlorethylene. Paint and other coatings, if not flaked or bubbled, need not be removed. Plastic
pipes typically do not require surface preparation other than
soap and water cleaning.
PART 2 - TRANSDUCER POSITIONING
Installation on
Large Pipes
Mounting Transducers in Z-Mount Configuration
Installation on larger pipes requires careful measurements to
the linear and radial placement of the DTT transducers. Failure
to properly orient and place the transducers on the pipe may
lead to weak signal strength and/or inaccurate readings. The
section below details a method for properly locating the transducers on larger pipes. This method requires a roll of paper
such as freezer paper or wrapping paper, masking tape and a
marking device.
Wrap the paper around the pipe in the manner shown in Figure
2.6. Align the paper ends to within 0.25 inches [6mm].
Figure 2.6 Paper Template Alignment
Mark the intersection of the two pieces of paper to indicate the
circumference. Remove the template and spread it out on a flat
surface. Fold the template in half, bisecting the circumference.
See Figure 2.7.
Crease the paper at the fold line. Mark the crease. Place a
mark on the pipe where one of the transducers will be located.
See Figure 2.5 for acceptable radial orientations. Wrap the
template back around the pipe, placing the beginning of the paper and corner in the location of the mark. Move to the other
side of the pipe and mark the ends of the crease. Measure
from the end of the crease (directly across the pipe from the first
Rev. 8/02 - 2. 18 - TFXM
PART 2 - TRANSDUCER POSITIONING
transducer location) the dimension derived in Step 2, Transducer Spacing. Mark this location on the pipe.
The two marks on the pipe are now properly aligned and measured.
Figure 2.7 Bisecting the pipe circumference
If access to the bottom of the pipe prohibits the wrapping of the
paper around the circumference, cut a piece of paper to these
dimensions and lay it over the top of the pipe.
Length = Pipe O.D. x 1.57
Width = Spacing determined on Pages 2.14 or 2.16
Mark opposite corners of the paper on the pipe. Apply transducers to these two marks.
Rev. 8/02 - 2. 19 - TFXM
PART 2 - TRANSDUCER POSITIONING
Transducer Mounting
1. Place a single bead of couplant, approximately 3/8 inch [6
mm] thick, on the flat face of the transducer. See Figure
2.8. Use Dow 732 for permanent and Dow 44 or Dow 111
for temporary (less than 12 months) installations. [For high
temperature installations, utilize the Dow 112 and orange
silicone pads that were shipped with the DTTH transducers. Apply the couplant to the transducer face as shown in
Figure 2.8, then place the silicone pad over the couplant.
Apply the couplant to the exposed surface of the silicone
pad.
Figure 2.8 Transducer Couplant Application
2. Install the first transducer on the pipe, with the alignment
groove placed over one of the marks created in the previous section. The stainless steel clamping band will be positioned within the groove on the front of the transducer.
See Figure 2.9.
Rev. 8/02 - 2. 20 - TFXM
PART 2 - TRANSDUCER POSITIONING
Lineal measurements are
made from these lines.
Figure 2.9 Z-Mode Transducer Mounting
3. Secure the transducer by tightening the stainless steel
strap. (Excessive pressure is not required. Apply just
enough pressure so that the couplant fills the gap between
the pipe and transducer.) If DOW 732, or some other silicone RTV type sealant, was used ensure that no relative
movement between the transducer and pipe takes place
during the setting time and do not apply instrument power
for at least 24 hours. If Dow 44 or Dow 111 or an alternate
form of grease has been used as a couplant, setting time is
not necessary.
4. Mount the transducer in the same manner as the first, but at
the second mark on the pipe. Slide the transducer clamp
over the transducer and secure with the stainless strap. Refer to Figure 2.9 for proper orientation.
NOTE: Since pipes larger than 20 inches (500 mm),
typically can be out-of-round by a substantial amount, it
is advised that the second transducer be left loose so
that it can be positioned at the location of greatest Signal
Strength. See Section 3 of this manual for Diagnostics
and Signal Strength Measurement. Maximum Signal
Strength can typically be obtained within 1 inch [25 mm]
of the calculated lineal distance.
Rev. 8/02 - 2. 21 - TFXM
PART 2 - TRANSDUCER POSITIONING
Mounting Track
Installation
Mounting Track Installation
1. Install the single mounting track on the pipe in an orientation suggested by Figure 2.5 (minus the rail mounted
across the pipe) with the stainless steel bands provided.
Orientation on vertical pipe is not critical. Ensure that the
track is parallel to the pipe and that all four mounting feet
are touching the pipe.
2. Slide the two transducer clamp brackets towards the center, 5 inch [125 mm] mark, on the mounting rail.
3. Place a single bead of couplant, approximately 3/8 inch [6
mm] thick, on the flat face of the transducer. See Figure
2.10. Use Dow 732 for permanent and Dow 44 for temporary (less that six months) installations. [High temperature
installations require the use of Dow 112 and silicone pads.]
Figure 2.10 Transducer Couplant Application
4. Place the first transducer in between the mounting rails
near the zero point on the mounting rail scale. Slide the
transducer clamp over the transducer. Adjust the clamp/
transducer such that the notch in the clamp aligns with
zero on the scale. See Figure 2.11.
Rev. 8/02 - 2. 22 - TFXM
PART 2 - TRANSDUCER POSITIONING
Figure 2.11 Transducer Space Measurement
5. Secure with the thumb screw. Ensure that the screw rests in
the counter bore on the top of the transducer. (Excessive
pressure is not required. Apply just enough pressure so that
the couplant fills the gap between the pipe and transducer.)
If DOW 732 or some other silicone RTV type sealant was
used, ensure that no relative movement between the transducer and pipe takes place during the setting time and do
not apply instrument power for at least 24 hours. If Dow 44
or Dow 111 or an alternate form of grease has been used as
a couplant, setting time is not necessary.
6. Place the second transducer in between the mounting rails
near the dimension derived in the Transducer Spacing section. Read the dimension on the mounting rail scale. Slide
the transducer clamp over the transducer and secure with
the thumb screw.
Rev. 8/02 - 2. 23 - TFXM
PART 3 - STARTUP AND CONFIGURATION
Before Starting
the
Instrument
Instrument
Startup
Note: The TFXM flow meter system requires a full pipe of
liquid before a successful startup can be completed. Do not
attempt to make adjustments or change configurations until a full
pipe is verified.
Note: If Dow 732 RTV was utilized to couple the transducers to
the pipe, the adhesive must fully cure before power is applied to
the instrument. Dow 732 requires 24 hours to cure satisfactorily.
If Dow 111 silicone grease was utilized as a couplant, the curing
time is not required. [DTTH—High Temperature Transducers utilize Dow 112 couplant and orange silicone pads mounted between
the transducer and the pipe. This setup does not require any curing time.]
Procedure:
1. Verify that all wiring is properly connected and routed as
described previously in this manual.
2. Verify that the transducers are properly mounted as described
in Part 2 of this manual.
3. Apply power to the flow meter. The TFXM display backlighting
will illuminate and the software version number will appear on
the display.
4. Confirm that Signal Strength is greater than 2% for each
measurement channel. If it is not, verify that proper transducer
mounting methods and liquid/pipe characteristics have been
entered. The pipe must be full of liquid in order to make this measurement.
5. Verify that the actual measured Sound Speed of the liquid is
within 0.5% of the table value utilized in the BASIC menu
setup.
6. Once the meter is properly operating (proper signal strength
and measured sound speed has been achieved) , refer to the
later portions of this manual section for additional
programming features.
Rev. 8/02 -3.1- TFXM
PART 3 - KEYPAD CONFIGURATION
General
Keypad
Operation
After an installation of the transducer track or cradle assembly
and connection of appropriate power supplies to the TFXM,
keypad configuration of the instrument can be undertaken. All
entries are saved in non-volatile FLASH memory and will be
retained in the event of power loss.
The TFXM can be configured through the keypad interface or
by using the UltraLink Windows® software utility. Of the two
methods of configuration, the UltraLink software utility provides
more advanced features and offers the abililty to store and
transfer meter configurations between TFXM meters.
SOFT KEYS
ARROW KEYS
INFRARED WINDOW
MEASUREMENT
CHANNEL SELECTION
Figure 3.1
Keypad Description
The following “Soft Key” menu items will be displayed
immediately above the two keys located in the lower corners of
the Graphics Display. See Figure 3.1.
Rev. 8/02 -3.2- TFXM
PART 3 - KEYPAD CONFIGURATION
1. The (soft)MENU key is pressed from RUN mode to enter
PROGRAM mode. The (soft)EXIT key is pressed in
PROGRAM mode to exit configuration parameters and
menus. If changes to any configuration parameters have
been made, the user will be prompted with a SAVE? (soft)
YES or (soft)NO when returning to RUN mode. If no
changes have been made, the user will not be prompted to
SAVE.
Measurement
Channel
Configuration
Display Contrast
Graphics
Display
Configuration
2. When the (soft)MENU key is pressed, the user is prompted
for the measurement channel that is to be configured. Use
the UP/DOWN arrow keys to display the measurement
channel that requires configuration. Press (soft)ACCEPT
when the required channel is visible in the center of the
display.
3. The UP/DOWN ARROW keys are used to scroll through
menus and configuration parameters. The ARROW keys
can also be used to adjust parameter numerical values. In
RUN mode the UP/DOWN ARROW keys are used to adjust
the display contrast level.
4. The Numerical Keypad is used for entering numerical values.
5. The (soft)ACCEPT key is used to
?? accept configuration parameter changes.
6. The (soft)SELECT key is used to
?? Configure the engineering units on the graphics display—
Press the (soft)SELECT key from RUN mode to highlight the
engineering unit presently being displayed on the graphics
display (pressing the SELECT key multiple times will toggle
the highlighted unit from line to line). Use the UP/DOWN
ARROW keys to select display units of
7. The (soft)CHAN UP/DOWN arrow keys are used to select a
measuring entity for a particular display position and
measuring channel.
8. The CHANNEL key is used during display setup to select
what channel’s information will be displayed on the graphics
display.
The eight menus used in the structure of the TFXM are as
follows:
1. Basic Menu -- It contains all of the configuration parameters
necessary to program the meter to measure flow.
2. Output 1 Menu -- Configures the type and operating
parameters of the input/output features located internally in
the TFXM flow meter.
3. Output 2 Menu -- Configures the type and operating
parameters of the input/output features located internally in
the TFXM flow meter.
4. AUX Com Port -- Configures BAUD rate, addresses and scale
factors applied to all flow meters on the RS485 network.
5. Sensor Menu -- menu is for future use.
6. Security -- utilized for resetting totalizers, resetting the
operating system and revising security passwords.
7. Service Menu -- contains system measurements that are used
by service personnel for troubleshooting instruments
installed on piping systems. On -the-pipe “zero flow” can be
captured in this menu.
8. Display Menu — used to select either 2 or 4 lines on the
graphics display.
The following sections define the configuration parameters
located in each of the menus.
Rev. 8/02 -3.4- TFXM
PART 3 - KEYPAD CONFIGURATION
UNITS Selection
1. BSC MENU -- BASIC MENU
The BASIC menu contains all of the configuration parameters
necessary to make the TFXM operational.
UNITS
ENGLSH
METRIC
Installs a global measurement standard into the operation of
the instrument. The choices are either English or Metric
measurements.
?? Select ENGLSH if all configurations (pipe sizes, etc.)are to
be made in inches. Select METRIC if the meter is to be
configured in millimeters.
Transducer
Mount
?? The ENGLSH/METRIC selection will also configure the
TFXM to display sound speeds in pipe materials and liquids
as either feet per second or meters per second,
respectively.
NOTE: If the UNITS entry has been changed from ENGLSH to
METRIC or from METRIC to ENGLSH, the entry must be saved
and the instrument reset (power cycled or System Reset entered) in order for the TFXM to initiate the change in operating
units. Failure to save and reset the instrument will lead to improper transducer spacing calculations and an instrument that
may not measure properly.
XDCR MNT -- Transducer Mounting Method
V
W
Z
Selects the mounting orientation for the transducers. The
selection of an appropriate mounting orientation is based on
pipe and liquid characteristics. See PART 2 - Transducer
installation in this manual.
Rev. 8/02 -3.5- TFXM
PART 3 - KEYPAD CONFIGURATION
Pipe Diameter
V -- Mount. A reflective type (transducers mounted on one
side of the pipe) of installation used primarily on pipe sizes in
the 3-10 inch [75-200 mm] internal diameter range.
W -- Mount. A reflective type (transducers mounted on one
side of the pipe) of installation used primarily on pipe sizes in
the 1-6 inch [25-75 mm] internal diameter range.
Z -- Mount. A direct type (transducers mounted on opposite
sides of the pipe) of installation used primarily on pipe sizes in
the 10-100 inch [200-2540 mm] internal diameter range.
PIPE OD -- Pipe Outside Diameter Entry
ENGLSH (Inches)
METRIC (Millimeters)
Enter the pipe outside diameter in inches if ENGLSH was
selected as UNITS; in millimeters if METRIC was selected.
Pipe Wall
Thickness
IMPORTANT NOTE: Charts listing popular pipe sizes have
been included in the Appendix of this manual. Correct entries
for pipe O.D. and pipe wall thickness are critical to obtaining
accurate flow measurement readings.
Enter the pipe wall thickness in inches if ENGLSH was
selected as UNITS; in millimeters if METRIC was selected.
IMPORTANT NOTE: Charts listing popular pipe sizes have
been included in the Appendix of this manual. Correct entries
for pipe O.D. and pipe wall thickness are critical to obtaining
accurate flow measurement readings.
Rev. 8/02 -3.6- TFXM
PART 3 - KEYPAD CONFIGURATION
Pipe Material
Pipe Sound
Speed
PIPE MAT -- Pipe Material Selection
CARBON S - Carbon Steel
STAINLES - Stainless Steel
CAST IRO - Cast Iron
DUCTILE - Ductile Iron
COPPER - Copper
PVC - Polyvinylchloride
PVDF LOW - Low Density Polyvinylidene Flouride
PVDF HI - High Density Polyvinylidene Flouride
ALUMINUM - Aluminum
ASBESTOS - Asbestos Cement
FIBERGLA - Fiberglass
OTHER
This list is provided as an example. Additional pipe materials
are being added continuously. Select the appropriate pipe
material from the list or select OTHER if the material is not
listed.
PIPE SS -- Speed of Sound in the Pipe Material
ENGLSH (Feet per Second)
METRIC (Meters per Second)
Allows adjustments to be made to the speed of sound in the
pipe wall. If the UNITS value was set to ENGLSH, the entry is
in FPS (feet per second). METRIC entries are made in MPS
(meters per second).
If a pipe material was chosen from the PIPE MAT list, a
nominal value for speed of sound in that material will be
automatically loaded. If the actual sound speed rate is known
for the application piping system and that value varies from the
automatically loaded value, the value can be revised.
If OTHER was chosen as PIPE MAT, a PIPE SS will need to
be entered.
Rev. 8/02 -3.7- TFXM
PART 3 - KEYPAD CONFIGURATION
Pipe Roughness
Liner Thickness
Liner Type
PIPE R -- Pipe Material Relative Roughness
UNITLESS VALUE
The TFXM provides Reynolds Number compensation in its flow
measurement calculation. The ratio of average surface
imperfection as it relates to the pipe internal diameter is used in
this compensation.
Linear RMS measurement of the pipe
PIPE R = internal wall surface Internal Diameter of the pipe
If a pipe material was chosen from the PIPE MAT list, a
nominal value relative roughness in that material will be
automatically loaded. If the actual roughness is known for the
application piping system and that value varies from the
automatically loaded value, the value can be revised.
If OTHER was chosen as PIPE MAT, a PIPE R may need to be
entered.
LINER T -- Pipe Liner Thickness Entry
ENGLSH (Inches)
METRIC (Millimeters)
Enter the pipe liner thickness. Enter this value in inches if
ENGLSH was selected as UNITS; in millimeters if METRIC
was selected.
[If a LINER Thickness was selected]
LINER MAT - Liner Material
Other
This list is provided as an example. Additional materials are
being added continuously. Select the appropriate material from
the list or select OTHER if the liner material is not listed.
LINER SS -- Speed of Sound in the Liner
ENGLSH (Feet per Second)
METRIC (Meters per Second)
Allows adjustments to be made to the speed of sound in the
liner. If the UNITS value was set to ENGLSH, the entry is in
FPS (feet per second). METRIC entries are made in MPS
(meters per second).
If a liner was chosen from the LINER MAT list, a nominal value
for speed of sound in that media will be automatically loaded.
If the actual sound speed rate is known for the pipe liner and
that value varies from the automatically loaded value, the value
can be revised.
FL TYPE - Fluid/Media Type
WATER
SEA WATE
KEROSENE
GASOLINE
FUEL OIL
CRUDE OI
PROPANE
BUTANE
OTHER
This list is provided as an example. Additional liquids are being
added continuously. Select the appropriate liquid from the list
or select OTHER if the liquid is not listed.
Rev. 8/02 -3.9- TFXM
PART 3 - KEYPAD CONFIGURATION
Fluid Sound
Speed
Fluid Viscosity
FLUID SS -- Speed of Sound in the Fluid
ENGLSH (Feet per Second)
METRIC (Meters per Second)
Allows adjustments to be made to the speed of sound in the
liquid. If the UNITS value was set to ENGLSH, the entry is in
FPS (feet per second). METRIC entries are made in MPS
(meters per second).
If a fluid was chosen from the FL TYPE list, a nominal value for
speed of sound in that media will be automatically loaded. If
the actual sound speed rate is known for the application fluid
and that value varies from the automatically loaded value, the
value can be revised.
If OTHER was chosen as FL TYPE, a FLUID SS will need to
be entered. A list of alternate fluids and their associated sound
speeds are located in the Appendix at the back of this manual.
FLUID VI -- Absolute Viscosity the Fluid
cps
Allows adjustments to be made to the absolute viscosity of the
liquid.
If a fluid was chosen from the FL TYPE list, a nominal value for
viscosity in that media will be automatically loaded. If the
actual viscosity is known for the application fluid and that value
varies from the automatically loaded value, the value can be
revised.
If OTHER was chosen as FL TYPE, a FLUID VI will need to be
entered. A list of alternate fluids and their associated
viscosities are located in the Appendix at the back of this
manual.
Fluid Specific
Gravity
Rev. 8/02 -3.10- TFXM
SP GRVTY -- Fluid Specific Gravity Entry
unitless
Allows adjustments to be made to the specific gravity (density)
of the liquid.
Transducer
Spacing
PART 3 - KEYPAD CONFIGURATION
If a fluid was chosen from the FL TYPE list, a nominal value for
specific gravity in that media will be automatically loaded. If the
actual specific gravity is known for the application fluid and that
value varies from the automatically loaded value, the value can
be revised.
If OTHER was chosen as FL TYPE, a SP GRVTY may need to
be entered if mass flows are to be calculated. A list of alternate
fluids and their associated specific gravities are located the
Appendix located at the back of this manual.
This value represents the one-dimensional linear measurement
between the transducers (the upstream/downstream
measurement that runs parallel to the pipe). This value is in
inches if ENGLSH was selected as UNITS; in millimeters if
METRIC was selected. This measurement is taken from the
line which is scribed into the side of the transducer block.
If the transducers are being mounted using the transducer
track assembly, a measuring scale is etched into the track.
Place one transducer at 0 inches and the other at the
appropriate measurement.
NOTE: If V-mounting is used on pipes that are smaller than 2
inches [50 mm], the transducers will be mounted "nose-tonose" as illustrated in Figure 3.2.
Figure 3.2
Rev. 8/02 -3.11- TFXM
PART 3 - KEYPAD CONFIGURATION
Engineering
Units
RATE
Engineering
Units
RATE
INTERVAL
Engineering
Units
TOTAL
RATE UNT - Engineering Units for Flow Rate
GALLONS - U.S. Gallons
LITERS - Metric Liter
MGAL - Millions of U.S. Gallons
CUBIC FT - Cubic Feet
CUBIC ME - Cubic Meters
ACRE FT - Acre Feet
OIL BARR - Oil Barrels (42 U.S. Gallons)
LIQ BARR - Liquor Barrels (31.5 U.S. Gallons)
FEET - Linear Feet
METERS - Linear Meters
Select a desired engineering unit for flow rate measurements.
RATE INT - Time Interval for Flow Rate
MIN - Minutes HOUR - Hours
DAY - Days SEC - Seconds
Select a desired engineering unit for flow rate measurements.
TOTL UNT - Engineering Units for Flow Totalizer
GALLONS - U.S. Gallons
LITERS - Metric Liter
MGAL - Millions of U.S. Gallons
CUBIC FT - Cubic Feet
CUBIC ME - Cubic Meters
ACRE FT - Acre Feet
OIL BARR - Oil Barrels (42 U.S. Gallons)
LIQ BARR - Liquor Barrels (31.5 U.S. Gallons)
FEET - Linear Feet
METERS - Linear Meters
Select a desired engineering unit for flow accumulator
(totalizer) measurements.
Rev. 8/02 -3.12- TFXM
PART 3 - KEYPAD CONFIGURATION
Engineering
Units
TOTAL Exponent
TOTL E - Flow Totalizer Exponent Value
E-1 to E6
Utilized for setting the flow totalizer exponent. This feature is
useful for accommodating a very large accumulated flow. The
exponent is a "X10n" multiplier, where "n" can be from -1 (X
0.1) to +6 (X 1,000,000).
Exponent Display Multiplier
E-1 X 1 (No multiplier)
E0 X 1 (No multiplier)
E1 X10
E2 X100
E3 X1,000
E4 X10,000
E5 X100,000
E6 X1,000,000
Minimum Flow
Rate
Maximum Flow
Rate
MIN RATE - Minimum Flow Rate Settings
Rate Unit/Rate Interval
A minimum volumetric flow rate setting is entered to establish
NOTE: The Minimum Rate may be set anywhere in the flow
measurement range of -40 to +40 FPS. For example: If bidirectional flow needs to be logged, set the MIN RATE at a
negative value.
filter software settings.
MAX RATE - Maximum Flow Rate Settings
Rate Unit/Rate Interval
A maximum volumetric flow rate setting is entered to establish
Rev. 8/02 -3.13- TFXM
PART 3 - KEYPAD CONFIGURATION
Low Flow
Cut-off
Flow Reading
Damping
filter software settings and as a baseline for the FL C-OFF
entry below.
NOTE: The Maximum Rate may be set anywhere in the flow
measurement range of -40 to +40 FPS. For example: If bidirectional flow needs to be logged, set the MIN RATE at a
negative value and MAX RATE at a positive value.
FL C-OFF - Low Flow Cut -off
Percent of MAX RATE
A Low Flow Cut-off entry is provided to allow very low flow
rates (that can be present when pumps are off and valves are
closed) to be displayed as Zero flow. Typical values that
should be entered are between 1.0% and 5.0% of full-scale.
DAMP PER - System Damping
Relative Percent Entry
DAMP PER establishes a maximum adaptive filter value.
Under stable flow conditions (flow that varies less than the
Flow Filter Hysteresis entry) this adaptive filter will increase
the number of successive flow readings that are averaged
together up to this maximum value. If flow changes outside of
the Flow Filter Hysteresis window (typically ±5% of flow rate) ,
the Flow Filter adapts by decreasing and allows the meter to
react faster. Increasing this value tends to provide smoother
steady-state flow readings and outputs. The DAMP PER
setting increases and decreases the response time of the flow
meter display and outputs. Enter a value between 1 and 100
percent, a setting of 1 having the fastest response and 100
having the slowest response.
Rev. 8/02 -3.14- TFXM
PART 3 - KEYPAD CONFIGURATION
2&3. OUTPUT 1 and 2 MENUS
Standard
4-20mA
Integral 4-20mA Output
FL 4MA
FL 20MA
CAL 4MA
CAL 20MA
4-20 TST
The 4-20 mA Output interfaces with virtually all recording and
logging systems by transmitting an analog current signal that is
proportional to system flow rate. The output can be configured
to be either internally or externally powered by setting the left
DIP-switch at SW1 for Channel 1 and SW2 for Channel 2 . Refer to the Field Wiring Diagram at Figure 1.4 for terminal block
and DIP-switch locations.
When powered from internal power, the 4-20 mA output can
provide loop current for a maximum of 800 ohms of total loop
resistance. When powered externally, the maximum load varies
with the level of the voltage source. The insertion loss of the 420 mA circuit is 5Vdc, so the maximum loop load that can be
powered is calculated by the equation:
Max Loop Load = (External Supply Voltage - 5)
0.02
4-20mA Span
Rev. 8/02 -3.15- TFXM
The FL 4MA and FL 20MA entries are used to set the span of
the 4-20 mA analog output. These entries are volumetric rate
units that are equal to the volumetric units configured as Engineering Rate Units and Engineering Units Time Interval entered
on page 3.10. These entries may be entered anywhere in the
flow measurement range of the instrument (velocity range of –
40 to +40 FPS [-12 to +12 MPS]).
For example, to span the 4-20mA output from –100 GPM to
+100 GPM, with 12mA being 0 GPM, set the FL 4MA and FL
20MA inputs as follows:
FL 4MA = -100.0
4-20mA
Calibration
PART 3 - KEYPAD CONFIGURATION
FL 20MA = 100.0
For example, to span the 4-20mA output from 0 GPM to +100
GPM, with 12mA being 50 GPM, set the FL 4MA and FL
20MA inputs as follows:
FL 4MA = 0.0
FL 20MA = 100.0
The 4-20mA ISO-MOD is factory calibrated and should not require adjustment unless it is replaced.
NOTE: The CAL 4MA and CAL 20MA entries should not be
used in a attempt to set the 4-20mA range. Utilize FL 4MA and
FL 20MA, detailed above, for this purpose.
The CAL4MA entry allows fine adjustments to be made to the
“zero” of the 4-20mA output. To adjust the 4mA output, an
ammeter or reliable reference connection to the 4-20mA output
must be present.
Procedure:
1. Disconnect one side of the current loop and connect the
ammeter in series (disconnect either wire at the terminals
labeled 4-20mA IN or 4-20mA OUT, Fig. 1.4).
2. Using the arrow keys, increase the numerical value to increase the current in the loop to 4mA. Decrease the value
to decrease the current in the loop to 4mA. Typical values
range between 40-80 counts.
Re connect the 4-20mA output circuitry as required.
Calibration of the 20mA setting is conducted much the same
way as the 4mA adjustments.
Procedure:
1. Disconnect one side of the current loop and connect the
ammeter in series (disconnect either wire at the terminals
Rev. 8/02 -3.16- TFXM
PART 3 - KEYPAD CONFIGURATION
labeled 4-20mA IN or 4-20mA OUT, Fig. 1.4).
2. Using the arrow keys, increase the numerical value to increase the current in the loop to 20mA. Decrease the value
to decrease the current in the loop to 20mA. Typical values
range between 3700-3900 counts.
Re connect the 4-20mA output circuitry as required.
4-20mA Test
Relay Setup
4-20 TST - 4-20mA Output Test
4-20
Allows a simulated value to be output from the 4 -20mA output.
By incrementing this value, the 4-20mA output will transmit the
indicated current value.
Integral Dual Relay Configuration
RELAY 1 AND RELAY 2
NONE
TOTALIZE
TOT MULT
FLOW
ON
OFF
SIG STR
ERRORS
Two independent SPDT (single-pole, double-throw, Form C)
relays are integrated into the TFXM for each measuring channel installed within the flow meter enclosure. The relay
operations are user configured via software to act in either a
flow rate alarm, signal strength alarm or totalizer/batching
mode. See Figure 1.4 for terminal block locations. The relays
are rated for 200 Vac max. and have a current rating of 0.5 A
resistive load [175 Vdc @ 0.25 A resistive]. It is highly
recommended that a slave relay be utilized whenever the control relays are used to control inductive loads such as solenoids
and motors.
Rev. 8/02 -3.17- TFXM
PART 3 - KEYPAD CONFIGURATION
Batch/Totalizer
Relay
Flow Rate Relay
Signal Strength
Alarm
Error Alarm
Relay
When one of the relays is set to TOTALIZE mode, an entry of
TOT MULT must be programmed to establish the accumulated
flow volume that needs to pass before the relay will “pulse”.
The relay will pulse every time that volume is accumulated.
The pulse has a duration of approximately 50mSec. Enter a
value using the same units that were established as Engineering Units TOTAL on page 3.12.
When a relay is set to FLOW mode, two entries must be made:
ON and OFF. The ON and OFF entries dictate at what volumetric flow rate (using the volumetric units established as Engineering Units RATE and RATE INTERVAL on page 3.12) the
relay turns ON and at what flow rate the relay turns OFF - establishing a deadband. For “fail-safe” mode, the ON setting
should be set higher than the OFF setting.
When a relay is set to SIG STR mode, the relay will activate
when the measured Signal Strength falls below the Signal
Strength Cutoff setting. See page 3.26.
When a relay is set to ERROR mode, the relay will activate
when any error occurs in the flow meter that has caused the
meter to stop measuring reliably. See the Appendix of this
manual for a list of potential error codes.
4. AUX COMM MENU -- RS485
Integral RS485 Communications
RS485
MODBUS
Communications
Rev. 8/02 -3.18- TFXM
RS485 MO — MODE
SLAVE
MASTER
RS485 BA — BAUD RATE
1200
2400
9600
19200
ADDRESS — Device Address
1-127
PART 3 - KEYPAD CONFIGURATION
An RS485 driver and Modbus protocol is utilized by the TFXM
to communicate between the two channels located within the
TFXM flow meter enclosure (if so equipped), communicate with
satellite TFX flow meters and to interface with a personal com-
puter system. The TFXM can be used as the Primary meter
(Master) to program other Secondary (Slave) meters located
on the RS485 network. The TFXM contains a feature that per-
mits up to 8 flow measurement channels to be mathematically
manipulated. Software configuration is covered in Section 4 of
this manual.
RS485 interconnections are made at the terminal block located
within the TFXM Field Wiring Access Panel. See Figure 1.4 .
Utilize two conductor plus shield wiring cable for this purpose.
Avoid running these cables in wiring trays or conduits carrying
AC power or other electrically noisy devices.
RS485 MO
Select SLAVE for all of the TFXD meters.
RS485 BA
Select a Baud rate that is compatible with the operating system
– typically 9600.
ADDRESS
Each TFXD connected on the communications bus must have
an unique address number assigned.
Rev. 8/02 -3.19- TFXM
PART 3 - KEYPAD CONFIGURATION
Optional
Rate Pulse
Rate Pulse Span
ISO-MOD RATE PULSE
FL 100H
FL 10KH
CAL 100H
CAL 10KH
The Rate Pulse Output Module is utilized to transmit information to external counters and PID systems via a frequency output that is proportional to system flow rate. Independent Zero
and Span settings are established in software using the Flow
Measuring Range entries. These entries can be set anywhere
in the –40 to +40 FPS [-12 to +12 MPS] measuring range of the
instrument. Output resolution of the module is 12-bits (4096
discrete points) and the maximum output frequency setting is
2,500 Hz. The 0.21-Ohm FET output is rated to operate at 100
V and 1 A maximum. This module does not source an output
voltage and should be treated as an open collector type of output. An external voltage source and limit resistor must be present.
The FL 100H and FL FL10KH entries are used to set the span
of the 0-2.5KHz frequency output. These entries are volumetric rate units that are equal to the volumetric units configured
as Engineering Rate Units and Engineering Units Time Interval
entered on page 3.12. These entries may be entered anywhere in the flow measurement range of the instrument
(velocity range of –40 to +40 FPS [-12 to +12 MPS]).
For example, to span the 0-2.5KHz output from –100 GPM to
+100 GPM, with 1.25KHz being 0 GPM, set the FL 100H and
FL 10KH inputs as follows:
FL 100H = -98.0 (1% of span)
FL 10KH = 100.0
For example, to span the Rate Pulse output from 0 GPM to
+100 GPM, with 1.25 kHz being 50 GPM, set the FL 100H and
FL 10KH inputs as follows:
FL 100H = 1.0 (1% of span)
FL 10KH = 100.0
Rev. 8/02 -3.20- TFXM
PART 3 - KEYPAD CONFIGURATION
Rate Pulse
Calibration
The Rate Pulse ISO-MOD is factory calibrated and should not
require adjustment unless it is replaced.
The CAL 100H entry allows fine adjustments to be made to the
“zero” of the 0-2.5KHz output. To adjust the 25Hz setting, frequency counter or reliable reference connection to the 0-
2.5KHz output must be present. The output of the module
must be powered externally.
NOTE: The CAL 100H and CAL 10KH entries should not be
used in a attempt to set the 0-2.5KHz range. Utilize FL 100H
and FL 10KH, detailed above, for this purpose.
Procedure:
1. The module must be powered to perform this calibration.
Connect the frequency counter at the terminals labeled +/-
on the ISO-MOD 0-2.5KHz module). Set the counter to the
appropriate measuring range for measuring 25 Hz.
2. Using the arrow keys, increase the numerical value to increase the output frequency to 25 Hz ±1 Hz. Decrease the
value to decrease the output frequency to 25 Hz ±1 Hz.
Typical values range between 40-80 counts.
The CAL 10KH entry allows fine adjustments to be made to the
“span” of the 0-2.5KHz output. To adjust the 2.5KH setting, frequency counter or reliable reference connection to the 0-
2.5KHz output must be present. The output of the module
must be powered externally.
Procedure:
1. The module must be powered to perform this calibration.
Connect the frequency counter at the terminals labeled +/-
on the ISO-MOD 0-2.5KHz module). Set the counter to the
appropriate measuring range for measuring 2.5 KHz.
2. Using the arrow keys, increase the numerical value to increase the output frequency to 2.5 KHz ±3 Hz. Decrease
the value to decrease the output frequency to 2.5 KHz ±3
Hz. Typical values is 4000 counts.
Rev. 8/02 -3.21- TFXM
PART 3 - KEYPAD CONFIGURATION
RTD Module
Optional
RS232C Module
Details of the RTD Module and its configuration are located in
an Addendum to this manual. Those details are included with
the purchase of the RTD module.
ISO-MOD RS-232C
RS232 MO — MODE
HOST
UIF
RS232 BA — BAUD RATE
1200
2400
9600
19200
The RS232 Module can be interfaced with serial communication ports of PCs, PLCs and SCADA systems, running a Modbus protocol, detailed in the Appendix of this manual, that are
used to monitor flow rate information in piping systems. The
RS232 Module may also be used to form a hardwire connection to a PC that is running the UltraLink software utility. Baud
rates up to 19.2 K are supported.
Rev. 8/02 -3.22- TFXM
PART 3 - KEYPAD CONFIGURATION
Totalizer RESET
5. SENSOR MENU
The SEN MENU is presently not utilized.
6. SECURITY MENU
The SEC MENU allows the user to make password revisions,
reset the flow totalizer and reset the transmitter microprocessor.
TOT RES
NO
YES
Select YES to reset the flow totalizer/accumulator to Zero.
SYS RSET
System RESET
Change
Password
NO
YES
Select YES to initiate a microprocessor reset. Totalizer values
will be lost, but all other system configurations will be maintained.
CH PSWD? -- Change the Security Password
0-9999
By changing the Security Password from 0 to some other value
(any value between 1-9999), configuration parameters will not
be accessible without first entering that value when prompted.
If the value is left at 0, no security is invoked and unauthorized
changes could be made.
Rev. 8/02 -3.23- TFXM
PART 3 - KEYPAD CONFIGURATION
7. SERVICE MENU
The SERVICE Menu makes available two different system
measurements that are used for trouble -shooting and fine tuning of the instrument. Actual liquid sound speed and system
signal strength readings can be accessed through this menu.
The SERVICE Menu also has features that allow adjustment of
Signal Strength Cutoff, Error -Mode outputs and Zero Flow Rate
Set.
SSPD MPS - Sound Speed in the Liquid Metric
SSPD FPS - Sound Speed in the Liquid U.S.
The TFXM performs an actual speed of sound calculation for
the liquid it is measuring. This speed of sound calculation will
vary with temperature, pressure and fluid composition. The
value indicated in this measurement should be within a couple
of percent of the value entered/indicated in the BASIC menu
item FLUID SS. (This value cannot be edited.) If the actual
measured value is significantly different than the BASIC
MENU’s FLUID SS value, it typically indicates a problem with
the instrument setup. An entry such as PIPE O.D. or wall thickness was probably entered in error, the pipe may not be round,
or the transducer spacing is not correct. Table 3.1 lists sound
speed values for water at varying temperatures. If the TFXM is
measuring sound speed within 0.5% of the table values, the
installation and setup of the instrument is proper and accurate
readings can be assured.
Rev. 8/02 -3.24- TFXM
PART 3 - KEYPAD CONFIGURATION
TABLE 3.1
Sound Speed in
Liquid Water
Vs.
Temperature
The measurement of Signal Strength assists service personnel
with troubleshooting the TFXM system. In general, expect the
signal strength readings to be greater than 5% on a full pipe
with the transducers properly mounted. Signal strength readings that are less than 5% may indicate a need to chose an alternative mounting method for the transducers or that an improper pipe size has been entered.
Signal Strength readings in excess of 95% may indicate that a
mounting method with a longer path length may be required.
For example, if mounted on a 3 inch PVC pipe in V-mode
causes the measured Signal Strength value to exceed 95%,
change the mounting method to W-mode for greater stability in
readings.
Rev. 8/02 -3.25- TFXM
PART 3 - KEYPAD CONFIGURATION
Signal Strength
Cutoff
Signal Strength Cutoff
Signal Strength Cutoff SIG C-OF is used to drive the flowmeter
and its outputs to a zero flow state should conditions occur that
cause low signal strength. A signal strength indication of between 0.5 and 0.8 is considered to be inadequate for measuring flow reliably, so typical settings for SIG C-OF are in the
range of 1.0 to 2.0.
Signal Strength indication of 0.5 to 0.8 is considered to be no
signal at all. Verify that the pipe if full of liquid, the pipe size and
liquid parameters are entered correctly and that the transducers
have been mounted accurately.
Substitute Flow
Substitute Flow
Entry
Substitute Flow or SUB FLOW is a value that the analog outputs will be driven at when an error condition in the flowmeter
occurs. Typical settings are either –5% or 105% - a value outside of the normal operating range that can be used to indicate
a fault condition to the target device.
MIN RATE
SETTING
MAX RATE
SETTING
SUB FLOW
SETTING
DISPLAY
READING READING
DURING ERRORS
0.0 1,000.0 0.0 0.000
-500.0 500.00 50.0 0.000
-100.0 200.0 33.3 0.000
0.0 1,000.0 -5.0* -50.00
Rev. 8/02 -3.26- TFXM
PART 3 - KEYPAD CONFIGURATION
Setting/
Calibrating Zero
Flow
Setting/
Calibrating Zero
Flow
Setting Zero Flow
Because every flowmeter installation is slightly different and
sound waves can travel in slightly different ways through these
various installations, a provision is made in this entry to establish “Zero” flow—SET ZERO.
To zero the meter:
1. The pipe must be full of liquid.
2. Flow must be absolute zero—verify by closing a valve securely. Allow time for any settling to occur.
3. Press ENTER, use the arrow keys to make the display read
YES.
4. Press ENTER.
5. The procedure is complete.
Reset Zero—Factory Default Zero
If the flow in a piping system cannot be shutoff, allowing the
SET ZERO procedure described above to be performed, the
factory default zero should be utilized. To utilize the D-FLT 0
function, simply press ENTER, then press an ARROW key to
display YES on the display and then press ENTER. This function can also be utilized to correct an inadvertently entered or
erroneous SET ZERO entry.
Universal
Correction
Factor
COR FTR - Universal Correction Factor
This function can be used to make the TFXM system agree
with a different or reference flow meter, by applying a correction factor/multiplier to the readings and outputs. A factory calibrated system should be set to 1.000. The range of settings for
this entry is 0.500 to 1.500. The following examples describe
two uses for the COR FTR entry.
?? The TFXM meter is indicating a flow rate that is 4% higher
than another flow meter located in the same pipe line. To
make the TFXM indicate the same flow rate as the other
meter, enter a COR FTR of 0.960, to lower the readings by
4%.
Rev. 8/02 -3.27- TFXM
PART 3 - KEYPAD CONFIGURATION
?? An out-of-round pipe, carrying water, causes the TFXM to
indicate a measured sound speed that is 7.4% lower than
the TABLE 3.1 value. This pipe condition will cause the
flow meter to indicate flow rates that are 7.4% lower than
actual flow. To correct the flow readings, enter 1.074.
Rev. 8/02 -3.28- TFXM
PART 3 - KEYPAD CONFIGURATION
8. DSP MENU -- DISPLAY MENU
Graphics
Display Mode
Display Units
DISPLAY LINES
Allows the selection of a two line or four line display format on
the graphics display module.
In 2 Line mode, the display will display flow measurements with
larger characters on the top half of the window and smaller
standard sized characters on the lower half of the window. In 4
Line mode, the display will display flow measurements with
standard sized characters on four lines in the window.
DISPLAY UNITS SELECTION
The (soft)SELECT key is used to conifgure the engineering
units on the graphics display—Press the (soft)SELECT key
from RUN mode to highlight the engineering unit presently
being displayed on the graphics display (pressing the SELECT
key multiple times will toggle the highlighted unit from line to
line). Use the UP/DOWN ARROW (soft)CHAN keys to select
display units of
The TFXM flow meter is available with two software utilities,
UltraLink and DataLink. The UltraLink utility is used for
configuration, calibration and communication with the TFXM flow
meter. The DataLink utility is used for uploading and translating
data accumulated in the optional datalogger module.
UltraLink has been designed to provide TFX users with a
powerful and convenient way to configure and calibrate all TFX
flowmeters. UltraLink can be used in conjunction with an infrared
communications adapter (Dynasonics P.N. D005-2115-001),
RS232 or RS485.
System Requirements
Computer type - PC, operating system Windows 95/98/2000/XP,
a communications port, hard disk and 3.5" diskette drive.
Installation
1. Backup/Copy all files from the enclosed disk to a folder on the
computer hard disk.
2. Remove the diskette from the computer and store.
3. From the "Start" command, RUN UlSetup.exe from the hard
disk folder.
4. UlSetup will automatically extract and install on the hard disk
and place a short -cut icon on the desktop.
5. Most PCs will require a restart after a successful installation.
Initialization
1. Connect the PC to the TFX flowmeter using the infrared
communications adapter (Dynasonics P.N. D005-2115-001),
ISO-MOD RS232 or ISO-MOD RS485.
2. Double-click on the UltraLink icon. The first screen is the
“RUN-mode” screen, See Figure 4.1 , which contains real-time
Rev. 8/02 -4.1- TFXM
SOFTWARE UTILITIES
information regarding flow rate, totalizer accumulation, system
signal strength, diagnostic data and the flow meter’s serial
number. The indicator in the lower right-hand corner will
indicate communications status. If a red ERROR is indicated,
click on the Communications button on the top bar. Click on
Initialize. Choose the appropriate COM port and interface
type. Proper communications are established when a green
OK is indicated in the lower right-hand corner of the PC
display.
Notes: The range of the infrared communications adapter is
roughly 3 meters. Some high-intensity lighting systems will
significantly reduce the communications range of the infrared
system.
Data Trend Data Trend Flow
Figure 4.1
UltraLink Data Screen
Rev. 8/02 -4.2- TFXM
SOFTWARE UTILITIES
Using UltraLink
For
Configuration
Click on the button labeled Configuration for updating flow
range, liquid, pipe and I/O operating information. The first screen
that appears after clicking the Configuration button is the BASIC
tab. See Figure 4.2.
Figure 4.2
Basic Tab
1. BASIC TAB—See Figure 4.2
?? General Units allows selection of either English (U.S.) or
Metric units of measure. If measurements of the pipe are to be
entered in inches, select English. If pipe measurements are to
be entered in millimeters, select Metric. It is recommended
that if the General Units are altered from those at instrument
startup, that the Download button be pressed on the lower
right-hand portion of the screen and that the TFXM have its
power cycled.
?? Standard Configurations contains the most popular
applications for the TFXM. The TFXM has been constructed
and configured at the Dynasonics factory for a specific pipe
size. If the Standard Configuration does not match the pipe
schedule or material, select the proper configuration from the
drop down list. If the pipe schedule is not listed or if the liquid
is not water, select Other on the drop down list and fill in the
proper information on the setup screen.
Rev. 8/02 -4.3- TFXM
SOFTWARE UTILITIES
2. FLOW Tab—See Figure 4.3
Figure 4.3
Flow Tab
?? Flow Rate Units are selected from the pull down lists. Select
an appropriate rate unit and rate time-base from the two lists.
?? Totalizer Units are selected from pull down lists. Select an
appropriate totalizer unit and totalizer exponent. The totalizer
exponents are in Scientific Notation and permit the eight digit
totalizer to accumulate very large values before the totalizer
“rolls over” and starts again at zero. The Table on page 3.13
illustrates the Scientific Notation values and their respective
decimal equivalents.
?? MIN Flow is used by the TFXM to establish filter settings in its
operating system. Enter a flow rate that is the minimum flow
rate anticipated within the system. For uni-directional
systems, this value is typically zero. For bi-directional systems
this value is set to a negative number that is equal to the
maximum negative flow rate that is anticipated within the
system.
?? MAX Flow is used by the TFXM to establish filter settings in
its operating system. Enter a flow rate that is the maximum,
positive flow rate anticipated within the system.
Rev. 8/02 -4.4- TFXM
SOFTWARE UTILITIES
?? The Damping value is increased to increase stability of the
flow rate readings. Damping values are decreased to allow
the flow meter to react faster to changing flow rates.
?? Low Flow Cutoff is entered as a percentage between MAX
Flow and MIN Flow and influences how the flow meter will act
at flows very near zero. Generally, an entry of 1% provides for
a stable zero indication, while providing a 100:1 turndown ratio
for measurements.
?? Low Signal Cutoff is a relative value that should be entered
after a successful flow meter startup. For an initial value,
enter 5% [Signal Strength indications below 3% are
considered to be below the noise ceiling and should not be
indicative of a successful flow meter startup.] The entry has
three purposes: It provides an error indication—Low Signal
Strength [Error 0010 on the TFXM display] when liquid
conditions within the pipe have changed to the point where
flow measurements may not be possible. It warns if the pipe’s
liquid level has fallen below the level of the transducers. It can
also signal that something with the flow meter installation or
configuration may have changed. Examples would include
such things as the couplant used to mount the transducer has
become compromised, a cable has become disconnected or a
pipe size setting has been altered.
?? Substitute Flow is used to provide an indication and output
that signifies that an error exists with the flow meter or its
setup. It is set as a percentage between MIN Flow and MAX
Flow. In a uni-directional system this value is typically set to
zero, to indicate zero flow while in an error condition. In a bidirectional system, the percentage can be set such that zero is
displayed in a error condition. To calculate out where to set
the Substitute Flow value in a bi-directional system perform
the following operation:
Substitute Flow = 100 x MAX Flow ____
MAX Flow + MIN Flow
Rev. 8/02 -4.5- TFXM
SOFTWARE UTILITIES
Downloading
Configurations
Input/Output
Configuration
?? Entry of data in the Basic and Flow tabs are all that is
required to provide flow measurement functions to the flow
meter. If the user is not going to utilize input/output functions,
click on the Download button to transfer the configuration to
the TFXM instrument.
3. To configure input/output elements that may be present within
the TFX, click on the Output Tab. See Figure 4.4. The
output menu allows selection, configuration, calibration and
testing of various input/output modules. The window will
appear as shown in Figure 4.4. Detailed information
regarding all of the modules available and configuration
options are available in section 3 of this manual.
Figure 4.4
Output Tab
4. The Security tab, Figure 4.6, contains a provision for adding
password protection to the configuration of the flow meter.
Passwords between the values of 1 and 9999 are acceptable.
The factory backdoor password is 8113. Use 8113 to access
the flow meter should the entered password be forgotten.
Leave the password set to 0 to avoid being prompted for
password entry.
Rev. 8/02 -4.6- TFXM
Figure 4.6
Security Tab
7. ADVANCED TAB—See Figure 4.7
The Advanced TAB contains several filter settings for the TFXM
flow meter. These filters can be adjusted to match response
times and data “smoothing” performance to a particular
application. The factory settings are suitable for most
installations.
?? Time Domain Filter adjusts the number of raw data sets (the
wave forms viewed on the UltraLink Diagnostics Screen) that
are averaged together. Increasing this value will provide
greater damping of the data and slow the response time of the
flow meter. This filter is not adaptive —it is operational to the
value set at all times.
?? Low Signal Cutoff is a duplicate entry from Page 3.26.
Adjusting this value adjusts the value on the Flow TAB.
?? Substitute Flow is a duplicate entry from Page 3.26.
Adjusting this value adjusts the value on the Flow TAB.
Rev. 8/02 -4.7- TFXM
Figure 4.7
Advanced Tab
?? Short Pulse Duration is a function used on pipes larger than
8 inches [200 mm]. Set this value to zero to disable the
function. Do not select the Auto Short Pulse box.
?? Flow Filter Damping establishes a maximum adaptive filter
value. Under stable flow conditions (flow that varies less than
the Flow Filter Hysteresis entry) this adaptive filter will
increase the number of successive flow readings that are
averaged together up to this maximum value. If flow changes
outside of the Flow Filter Hysteresis window, the Flow Filter
adapts by decreasing and allows the meter to react faster.
Increasing this value tends to provide smoother steady-state
flow readings and outputs.
?? Flow Filter Hysteresis creates a window around the average
flow measurement reading whereby if the flow varies within
that window, greater Flow Filter Damping will occur. The
filter also establishes a flow rate window where measurements
outside of the window are captured by the Bad Data Rejection Filter. The value is entered as a percentage of
actual flow rate.
Rev. 8/02 -4.8- TFXM
SOFTWARE UTILITIES
Example:
If the average flow rate is 100 GPM and the Flow Filter
Hysteresis is set to 5%, a filter window of 95-105 GPM is
established. Successive flow measurements that are
measured within that window are recorded and averaged in
accordance with the Flow Filter Damping setting. Flow
readings outside of the window are held up in accordance
with the Bad Data Rejection Filter.
?? Flow Filter MinHysteresis sets a minimum hysteresis window
that is invoked at low flow rates, where the “of rate” Flow Filter Hysteresis is very small and ineffective. This entry is
entered in pico-seconds and is differential time. This value is
factory set and should not be altered without consulting the
Dynasonics technical services department.
?? Flow Filter Sensitivity allows configuration of how fast the
Flow Filter Damping will adapt in the positive direction.
Increasing this value allows greater damping to occur faster
than lower values. Adaptation in the negative direction is not
user adjustable.
?? Bad Data Rejection is a value related to the number of
successive readings that must be measured outside of the
Flow Filter Hysteresis and Flow Filter MinHysteresis
windows before the flow meter will use that flow value. Larger
values are entered into the Bad Data Rejection when
measuring liquids that contain gas bubbles, as the gas
bubbles tend to disturb the ultrasonic signals and cause more
extraneous flow readings to occur. Larger Bad Data Rejection
values tend to make the flow meter more sluggish to rapid
changes in actual flow rate.
Rev. 8/02 -4.9- TFXM
SOFTWARE UTILITIES
Field Calibration
Setting Zero and Calibration
UltraLink contains a powerful multi-point calibration routine that
can be used to calibrate the TFXM flow meter to a primary
measuring standard in a particular installation. To initialize the
three step calibration routine, press the Calibration button located
on the top of the UltraLink Data Screen. The display shown in Figure 4.8 will appear. The first step in the calibration process is
the selection of the engineering units that the calibration will be
performed with. Select the units and press the Next button at the
bottom of the window.
Figure 4.8
Calibration Units
Establish Zero
Flow Rate
Rev. 8/02 -4.10- TFXM
The second screen, Figure 4.9 , establishes a baseline zero flow
rate measurement for the instrument. To zero the flow meter,
establish zero flow in the pipe (turn off all pumps and close a
dead-heading valve). Wait until the delta-time interval shown in
Figure 4.9 is stable (and typically very close to zero). Press the
Set button. Press the Next button when complete, then press the
Finish button on the Calibration Screen. If the Set button was
pressed, do not proceed with Flow Rate Calibration before
pressing the Finish button to save the Zero setting.
SOFTWARE UTILITIES
Wait for Stable Reading
Calibrating with
Actual Flow
Figure 4.9
Setting Zero Flow
The screen shown in Figure 4.10 allows multiple actual flow rates
to be run past the meter and the values recorded by the TFXM.
To calibrate a point, establish a stable, known flow rate (verified
by a real-time primary flow instrument), enter the actual flow rate
in the Figure 4.10 window and press the Set button. Repeat for
as many points as desired. Note: If only two points are to be
used (zero and span), it is preferred that a flow rate as high as
anticipated in normal operation is used as the calibration point. If
an erroneous data point is collected, the point can be removed by
pressing the Edit button, selecting the bad point and selecting
Remove.
Press the Finish button when all points have been gathered.
Rev. 8/02 -4.11- TFXM
SOFTWARE UTILITIES
Figure 4.10
Flow Rate Calibration
Enter Actual Flow Rate
Saving the
Configuration
Printing a
Report
Saving Meter Configuration on a PC
The complete configuration of the flow meter can be saved from the
Configuration screen. Select Save and name the file. This file
may be transferred to other flow meters or may be recalled should
the same pipe be surveyed again or multiple meters programmed
with the same information.
Printing Out a Flow Meter Configuration and Calibration
Report
Select File from the upper task bar and Print to print out a
calibration/configuration information sheet for the flow meter
installation.
Rev. 8/02 -4.12- TFXM
SOFTWARE UTILITIES
Uploading Data
from the Logger
During the installation of UltraLink, a file called DatLog was
installed and its icon will appear on the Desktop of the computer.
Click on the icon to start the utility. The screen shown in Figure
4.11 will appear as the computer is attempting to establish
communications with the logger module.
Figure 4.11
Data Logger Initialization
Connect the logger to the terminal strip (see Fig. 1.4) . After a few
moments, the Please Wait window will disappear and a green OK
will appear in the lower right-hand corner of the window. After
communications are established (and the OK is displayed) the
utility will scan the logger for all existing files. The scanning of the
Figure 4.12
Data Logger Upload
Rev. 8/02 -4.13- TFXM
SOFTWARE UTILITIES
logger module and the uploading of the file data can take up to
several minutes. The files will appear on the table, See Figure
4.12, in a list running from the earliest file to the latest file.
Information regarding starting time and date and points collected
will appear.
If a file is selected, the time stamped data will appear on the strip
chart located on the bottom of the window. The mouse can be
used to select a small portion of the graph and expand the data to
the width of the screen. To revert to the entire data file, right-click
the graph.
To save the file to a file on your computer, select the file from the
file table and press the Save button located on the top task bar.
See Figure 4.13. Datalog saves the files as a .CSV (Comma
Separated Value). These files can be opened in programs such
as Microsoft Excel® or Borland QuattroPro® for manipulation or
graphical purposes.
Note: The spreadsheet programs listed above are limited to the
number of lines of data that can be imported. Very large files may
need to be opened in a program like Microsoft WordPad and
saved in two or more sections.
Figure 4.13
Save Data Logger Files
Rev. 8/02 -4.14- TFXM
SOFTWARE UTILITIES
The datalogger module contains a real-time clock that can be set
by pressing the Clock button on the top task bar. See Figure
4.14. Activating the window compares the datalogger clock to the
clock located in the PC. Adjustments can be made and uploaded
to the logger.
Figure 4.14
Setting Data Logger Clock
Rev. 8/02 -4.15- TFXM
MULTICHANNEL OPERATION
General
Information
Multiple Channel
Display
Configuration
Series TFXM is a multiple channel flow meter designed with maximum user flexibility in mind. The product can be configured as a
simple flow meter, showing flow on multiple pipe simultaneously.
It can also be used to perform mathematical manipulation of flow
rates between pipes using its powerful, yet simple to use, algorithms. This manual will provide instructions as to configuration of
the TFXM in the following scenarios:
1. Multiple Pipe Flow Network
2. Multiple Path Flow Averaging
3. Flow Summations of Multiple Pipes
4. Flow Differences of Multiple Pipes
5. Leak Detection in Pipe Lines
Configuring of the graphics display
The graphics display on the TFXM can be configured to show either two or four lines of information. This information can be displayed for any flow meter on the TFXM RS485 network. The procedure to configure the display is as follows:
1. Menu Item 8 can be accessed to select either two or four lines
of display information. See Page 3.29 for details.
2. Press the (soft)Select key on the right side of the graphics display to highlight the upper most display entity.
3. Utilize the soft(CHAN) keys UP/DOWN arrows to select what
measuring entity is required: Flow RATE, Net TOTAL, Temp
Difference, Temp 2, Temp 1, Signal Strength or liquid Sound
Speed.
4. Utilize the CHANNEL key to select which measurement channel on the flow meter network is to be displayed:
M = Master Measurement
1 = Secondary Channel (Slave 1) integral to DTFXM2
2, 3, 4...119 = Secondary Channels (Slaves) external to DTFXM
No Designation = Multichannel Manipulated Value
5. After the entity and measurement channel have been selected
for a particular line, press the (soft)SELECT key to move the
Rev. 8/02 -5. 1- TFXM
MULTICHANNEL OPERATION
highlighting to the next line of the display. Pressing the (soft)
SELECT key on the bottom line of the display will cause the
display configuration to end and the setup will be saved.
Multiple Pipe
Configuration
Multiple Pipe Flow Network
The TFXM is designed to be the Primary (Master) flow controller
in a network of Secondary (Slave) flow meters. The TFXM can be
used to display flow information and configure up to 119 satellite
flow meters connected on its RS485, two-wire network.
To configure a multiple pipe setup, follow the entries shown in
Figure 5.1 . The Primary board in the TFXM is established as the
Master and all of the Secondary boards are considered slaves.
The coefficient values located on the bottom of the window do
not have a bearing on the display, because manipulated display
Rev. 8/02 -5. 2- TFXM
MULTICHANNEL OPERATION
values are not being shown on the graphics display.
Multiple Path
Configuration
Figure 5.1
Configuration for Multiple Pipe Readings
Multiple Path Flow Meter
By applying more than one set of transducers radially around a
pipe, accuracy can be improved in conditions where optimum
straight pipe diameters are not available. Typical installations
only involve two paths, but on large pipes several paths could be
employed. See Figure 5.2 . Only one multiple path system is
permitted per flow measurement network.
To configure the flow meter for multiple path operation, apply the
transducers radially around the pipe and apply equal coefficients
to each channel that total up to 1.00. For two path systems, 0.50
+0.50 = 1.00; for three path systems 0.333+0.333+0.334 = 1.000;
etc.
Rev. 8/02 -5. 3- TFXM
MULTICHANNEL OPERATION
Figure 5.2
Multiple Path Flow Meter
Summation
Configuration
Multiple Pipe Summation Flow Meter
The TFXM can be used to measure the summation of several flow
pipes. By entering coefficients of 1.00 for each channel, the sum
of the channels will be displayed on the mathematically manipulated display configuration. See Figure 5.3.
Figure 5.3
Summation Flow Meter
Rev. 8/02 -5. 4- TFXM
MULTICHANNEL OPERATION
Difference
Configuration
Difference Flow Meter
The difference of two pipes can be utilized to measure the flow in
two pipes and calculate the flow rate in a third trunk line in a piping system. (The difference meter can also be applied to two
ends of a piping system to display an alarm to leak between the
two measuring points.) Apply a coefficient of +1.00 to one channel and a coefficient of –1.00 to the second channel. The sum of
the two manipulated values will be the difference in the flow rates.
See Figure 5.4.
Figure 5.4
Subtraction Flow Measurement
Setting Coefficients on the
Keypad
Rev. 8/02 -5. 5- TFXM
Coefficients for measurement channels can also be established
on the TFXM keypad in the AUX Com Port Menu.
A P P E N D I X
V
V
BSC MENU
OUT1 MEN OUT2 MEN SEN MENU
SEC MENU
SER MENU
DSP MENU
UNITS
ENGLSH
METRIC
XDCR MNT
V
W
Z
PIPE OD
ENGLSH (INCHES)
METRIC (MM)
PIPE WT
ENGLSH (INCHES)
METRIC (MM)
PIPE MAT*
CARBON S
STAINLES
CAST IRO
DUCTILE
COPPER
PVC
PVDF LOW
PVDF HI
ALUMINUM
ASBESTOS
FIBERGLASS
OTHER
PIPE SS
ENGLSH (FPS)
METRIC (MPS)
PIPE R
(RELATIVE
ROUGHNESS)
LINER T
ENGLSH (INCHES)
METRIC (MM)
LINER TYPE*
TAR EPOXY
RUBBER
MORTAR
POLYPROPYLENE
POLYSTYROL
POLYSTYRENE
POLYESTER
TEFLON
OTHER
LINER SS
ENGLSH (FPS)
METRIC (MPS)
FL TYPE*
TAP WATER
SEWAGE
KEROSENE
GASOLINE
FUEL OIL
CRUDE OI
PROPANE
BUTANE
OTHER
FLUID SS
ENGLSH (FPS)
METRIC (MPS)
FLUID VI
CPS
SP GRVTY
UNITLESS
SP HEAT
NOMINAL
HEAT CAPACITY
XDC SPAC
ENGLSH (INCHES)
METRIC (MM)
RATE UNT
GALLONS
LITERS
MGAL
CUBIC FT
CUBIC ME
ACRE FT
OIL BARR
LIQ BARR
FEET
METERS
RATE INT
MIN
HOUR
DAY
SEC
TOTL UNT
GALLONS
LITERS
MGAL
CUBIC FT
CUBIC ME
ACRE FT
OIL BARR
LIQ BARR
FEET
METERS
TOTL E
E-1 TO E6
MIN RATE
RATE/INT
MAX RATE
RATE/INT
FL C-OFF
% of Full Scale
DAMP PER
PERCENT
OUT1
OPTIONS
4-20MAFL 4MA
FL 20MA
4-20 TST
0-10KHzFL 100H
FL 10KH
RELAY RELAY 1
RELAY 2
RTDCAL 1
CAL 2
A
B
C
RS232RS232 MO
HOST
UIF
RS232 BA
1200
2400
9600
19200
RS485RS485 MO
SLAVE
MASTER
RS485 BA
1200
2400
9600
19200
ADDRESS
1-127
NONE
OUT2
OPTIONS
4-20MAFL 4MA
FL 20MA
4-20 TST
0-10KHzFL 100H
FL 10KH
RELAY RELAY 1
RELAY 2
RTDCAL 1
CAL 2
A
B
C
RS232RS232 MO
HOST
UIF
RS232 BA
1200
2400
9600
19200
RS485RS485 MO
SLAVE
MASTER
RS485 BA
1200
2400
9600
19200
ADDRESS
1-127
NONE
NOT USED
*List provided for example only. Additional entries may be available.
TOT RES
NO
YES
SYS RSET
NO
YES
CH PSWD?
0-9999
SSPD MPS
SSPD FPS
SIG STR
SIG C-OFF
SUB FLOW
SET ZERO
D-FLT 0
COR FTR
DISPLAY
FLOW
TOTAL
BOTH
TOTAL
NET
POS
NEG
BATCH
SCN DWL
1-10
BTCH MUL
TOTALIZER UNIT
W/ TOTAL E
Keypad Operations
1. The MENU key is pressed from RUN mode to enter PROGRAM mode.
The MENU key is pressed in PROGRAM mode to exit configuration
parameters and menus. If changes to any configuration parameters have
been made, the user will be prompted with a SAVE?YES when returning to
RUN mode.
2. The ARROW keys are used to scroll through menus and configuration
parameters. The ARROW keys are also used to adjust parameter
numerical values.
3. The ENTER key is
?? pressed from the RUN mode to view the current software version operating
in the instrument.
?? used to access the configuration parameters in the various menus.
?? Used to initiate changes in configuration parameters.
?? Used to accept configuration parameter changes.
Date: 3/21/2000
Revision: E Rev. Date: 7/10/2001
Software Version: 1.00.9799
Fluid Sound Speeds
20 degrees C
m/s
ft/s
m/s/degree C
m^2/s
Original Date:7/30/99
Revision:none
Revision Date:none
File:I:/dynasonics/dyna_code/tables/fluid_ss.xls
Serial number not presentHardware serial number has become inoperative – system
performance will not be influenced.
Signal Strength is below Signal
Strength Cutoff entry
Measured Speed of Sound the in the
liquid is greater than 10% different than
the value entered during meter setup
Heat Flow Units of measure have been
selected and an RTD module has not
been installed
System tables have changedInitiate a meter RESET by cycling power or by selecting SYSTEM
System configuration has changedInitiate a meter RESET by cycling power or by selecting SYSTEM
Low signal strength is typically caused by one of the following:
• Empty pipe
• Improper programming/incorrect values
• Improper transducer spacing
• Non-homogeneous pipe wall
Verify that the correct liquid was selected in the BASIC menu.
Verify that pipe size parameters are correct.
Verify that RTD Module PN D020-1045-106 has been installed in
one of the I/O meter slots. Verify that OUTPUT1 or OUTPUT 2 has
been configured for RTD measurements.