Dynasonics TFXM Operating Manual
Series TFXM
Ultrasonic Multi-Channel Flow Meter
Operations & Maintenance
Manual
REV 8/02
TABLE OF CONTENTS
Pages
Quick-Start Operating Instructions 1.3-1.4
Part 1 Introduction
Part 1 Connections
Part 1 - Inputs
and Outputs
Introduction
General 1.5
Applications 1.5
Model Matrix 1.6
Product Specifications 1.7
Transmitter Connections
Transmitter Limits and Installation 1.8-1.9
Power and Transducer Connections 1.9-1.12
Input/Output Connections and Options
4-20 mA Output 1.13
Dual Control Relay 1.14
Rate Pulse Output
RS232C
RS485 1.14
RTD-BTU
Datalogger
Transducer Mounting
Part 2 Transducer
Installation
Mounting Location 2.1-2.2
Transducer Mounting Method 2.3-2.5
Transducer Spacing - Keypad Entry 2.6-2.14
Transducer Spacing - UltraLink 2.15-2.16
Pipe Preparation 2.17
Transducer Mounting 2.17-2.23
Rev. 8/02 -1.1- TFXM
TABLE OF CONTENTS
Pages
Part 3 Programming
Part 4 - Software
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-Mount Z-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)
1) 4-20mA and Dual-Relay
2) Dual -Relay and One Option
3) 4-20mA and One Option
Channel 1 Option Input/Output
N) None (If “1” is selected above)
1) 4-20mA (secondary)
2) Dual-Relay (secondary)
3) Rate Pulse
4) RS232
6) Data Logger
7) Heat Flow
Channel 2 Input/Output [DTFXM2]
N) none—[DTFXM1]
1) 4-20mA and Dual-Relay
2) Dual-Relay and One Option
3) 4-20mA and One Option
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
Conduit Type
A) Flexible armored
N) none
Conduit Length
(Standard construction: Conduit length = Cable length)
000) none
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
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.
Rev. 8/02 -1.8- TFXM
PART 1 - TRANSMITTER INSTALLATION
6
7
8
9
2
3
4
5
.
0
1
+/-
Figure 1.3 - TFX Transmitter Installation Dimensions
Transducer
Connections
10.55
(268.0)
11.34
(288.0)
10.44
(265.1)
.20 (5.1) DIA
4 MOUNTING
HOLES
11.00
(279.4)
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)
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
Low TSS, non-aerated
*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
?? RATE
?? TOTALizer
?? VELocity
?? SIGNAL STRength
?? Sound Speed
?? TEMP1
?? TEMP2
?? TEMP Diff
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.
PIPE WT -- Pipe Wall Thickness Entry
ENGLSH (Inches)
METRIC (Millimeters)
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.
XDCR SPAC -- Transducer Spacing Calculation
ENGLSH (Inches)
METRIC (Millimeters)
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 File Save 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.
Rev. 8/02 - 2. 15 - TFXM
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