dynasonics TFXL Series Manual

Series TFXL
Transit Time Ultrasonic Flow Meter
Remote Mount System
Operations & Maintenance
Manual
REV 01/11

Rev. 01/11 -1.1- TFXL-X
TABLE OF CONTENTS
Pages
Quick-Start Operating Instructions 1.3 - 1.4
Introduction
General 1.5
Applications 1.5
Product Matrix 1.6
Specifications 1.7
Terminology 1.8
Transmitter Installation
Transmitter Limits and Installation 1.9
Transducer Connections 1.10
Transmitter Power Connections 1.11 - 1.12
Input/Output Connections and Options
4-20 mA Output 1.13 - 1.14
Pulse Output 1.15 - 1.16
Application of Power and Troubleshooting 1.17 - 1.18
Transducer Installation
General 2.1
Transducer Mounting Location 2.2 - 2.3
Transducer Spacing 2.4 - 2.7
Transducer Mounting
Pipe Preparation 2.8
DTTN V-Mount & W-Mount 2.9 - 2.10
DTTH High Temp 2.11
DTTS/DTTC Small Pipe 2.11 - 2.14
DTTN Z-Mount 2.14 - 2.16
Mounting Rail 2.17
Part 1 -
Introduction
Part 1 -
Transmitter
Installation
Part 1 -
Input/Output
Connections
Part 2 -
Transducer
Installation

Rev. 01/11 -1.2- TFXL-X
TABLE OF CONTENTS
Pages
Software Utility Operation
Programming Entries
General Programming Information 3.1 - 3.2
BASIC MENU 3.3
FLOW MENU 3.4 - 3.6
ADVANCED MENU 3.7 - 3.8
OUTPUT MENU 3.9 - 3.10
DISPLAY MENU 3.11
Flow Meter Calibration 3.12 - 3.14
Appendix
Hazardous Area Installation Drawing
Fluid Characteristic Table
TFX Error Codes
Pipe Dimension Chart: ST, SS, PVC
Pipe Dimension Chart: Copper
Pipe Dimension Chart: Ductile Iron
Pipe Dimension Chart: Cast Iron
Velocity to Volumetric Conversion
Statement of Warranty
Customer Service
General Terms and Conditions
Part 3 -
Programming
Appendix

Rev. 01/11 -1.3- TFXL-X
This manual contains detailed operating instructions for all aspects of
the TFXL 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 the pipe inside diameter)
of straight pipe upstream and 5 straight diameters
downstream. 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 on page 1.4.
See Table 2.1 on page 2.3 for additional configurations.
B. Select a mounting method, Figure 1.1, for the transducers from
Table 2.2 on page 2.5, 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 3-16 inches (75-
400 mm). Select Z-Mount for pipes larger than 16 inches (400
mm).
C. Enter the parameters listed in Table 1.1 via the TFXL
ULTRALINK™ software utility.
D. Record the value calculated and displayed as Transducer
Spacing.
Transducer
Location
QUICK-START OPERATING INSTRUCTIONS
W-Mount V-Mount Z-Mount
Figure 1.1
Transducer Mounting Configurations

Rev. 01/11 -1.4- TFXL-X
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 ¼" (6 mm) wide bead of couplant, lengthwise onto
the transducer faces. Place the single DTTS/DTTC
transducer or each DTTN/DTTH transducers onto the pipe
ensuring proper linear and radial placement.
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. Small pipe transducers using wing nuts should be
hand tightened only.
3. TRANSDUCER/POWER CONNECTIONS
A. If additional cable is to be added to the transducers, the cable
must be the same type as utilized on the transducer and both
cables must be of equal length.
B. Refer to the wiring diagram located on the inside of the TFXL
cover and Figure 1.4 on page 1.10 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 7.
C. Verify that measured liquid SSPD is within 0.5% of the
configuration value.
D. Input proper units of measure and I/O data.
Startup
Connections
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 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 TFXL operating
system. The nominal values may be used as they appear or may be modified if
exact system values are known.

Rev. 01/11 -1.5- TFXL-X
PART 1 - INTRODUCTION
The TFXL ultrasonic flow meter is designed to measure the fluid
velocity of liquid within a closed conduit. The transducers are a non-
contacting, clamp-on or clamp-around type, which will provide
benefits of non-fouling operation and ease of installation.
TFXL transit time flow meters
utilize two transducers that
function as both ultrasonic
transmitters and receivers. DTTN
and DTTH tr ansducers are
clamped on the outside of a
closed pipe at a specific distance
from each other. The transducers
can be mounted in V-Mount where the sound transverses the pipe
two times, W-Mount where the sound transverses the pipe four
times, or in Z-Mount 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.
DTTS and DTTC (small pipe transducers) have both transmit and
receive crystals imbedded in a single clamp-around transducer so
no measurement between transducers is required.
The flow meter 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 transducers. The difference in the time
interval measured is directly related to the velocity of the liquid in the
pipe.
The TFXL 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 ½ inch
(12 mm) and larger. (Transducer sets from ½ to 1-½ inch and 2 inch
tubing require 2 MHz transmitters and dedicated pipe transducers.)
A variety of liquid applications can be accommodated.
Because the transducers are non-contacting and have no moving
parts, the flow meter is not affected by system pressure, fouling or
wear. The DTTN transducer set is rated to a pipe surface
temperature of 250 °F (121 °C). High temperature DTTH transducers
can operate to a pipe surface temperature of 350 °F (177 °C). The
General
Application
Versatility
ultrapure liquids sewage cooling water
potable water reclaimed water river water
chemicals plant effluent others

Rev. 01/11 -1.6- TFXL-X
PART 1 - INTRODUCTION
DTTS small pipe transducers can be used to a pipe surface
temperature of 185 ° F (85 °C) and the DTTC high temperature
small pipe transducers are rated for 250 °F (121 °C).
The TFXL uses a low voltage DC power source that provides
electrical safety for the user. Removing the cover allows access to
all the meter connections and the computer interface connection.
Non-volatile flash memory retains all user-entered
configuration values in memory indefinitely, even if power is lost or
turned off.
The serial number and complete model number of each TFXL are
located on the side of the instrument enclosure. Should technical
assistance be required, please provide the Dynasonics Customer
Service Department with this information.
User Safety
Data Integrity
Product
Identification
Product Matrix
Connector Options
N) ½ inch Conduit Hole
A) Water-tight Cable Clamp
C) Circular MIL-style Connector
D) ½ inch Flexible Conduit Connector
Display Options
1) No display-ABS enclosure
2) Rate & Totalizer display-
ABS enclosure
3) No display-polycarbonate
enclosure
4) Rate & Totalizer Display-
polycarbonate enclosure
Output Options
1) 4-20 mA and TTL Pulse
2) Totalizer Pulse
D T T
Type
N) Standard: +250 °F
(CPVC, Ultem®)
H) High Temp: +350 °F
(PTFE, Vespel®)
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
N) None - Bare RG59 Cable
A) Flexible armored
Options
N) General Purpose
F) CSA Class I Div. 1 Groups C & D
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
System Size
X) Large Pipe
Y) Small Pipe
D T F X L N N
Large Pipe Transducer - Pipes larger than 2" (50 mm)
Small Pipe Transducer - ½" to 2" (12 mm to 50 mm)
D T T
Pipe Type
P) ANSI Pipe
C) Copper Pipe
T) Tubing
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
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
N) None - Bare RG59
Cable
A) Flexible armored
Nominal Pipe Size
D) ½ inch
F) ¾ inch
G) 1 inch
H) 1¼ inch
K) 1½ inch
L) 2 inch *
Type
S) Standard: +185 °F
(PVC, Ultem®)
C) High Temp: +250 °F
(CPVC, Ultem®)
* Select “X) Large Pipe” for DTFXL System Size when ordering 2" ANSI or Copper Pipe.
Transmitter

Rev. 01/11 -1.7- TFXL-X
PART 1 - SPECIFICATIONS
DESCRIPTION SPECIFICATION
Liquid Types Most clean liquids or liquids containing minimal amounts of suspended solids.
Power Requirements 11-30 VDC @ 0.25A
Velocity 0.1 to 40 FPS (0.03 to 12 MPS)
Inputs / Outputs
Display Type: 2 line 8 character LCD; Top row: 0.7" (18mm) tall, 7-segment;
Bottom row: 0.35" (9mm) tall, 14-segment
Rate: 8 maximum rate digits, lead zero blanking
Total: 8 maximum totalizer digits, exponential multipliers from –1 to +6
Units Engineering Units: Feet, gallons, ft³, million-gal, barrels (liquid & oil), acre-feet, lbs., meters, m³, liters,
million-liters, kg
Rate: Second, minute, hour, day
Ambient Temperature General Purpose: -40 to +185 °F (-40 to +85 °C);
Hazardous Locations DTTN: -40 to +185 °F (-40 to +85 °C)
Pipe Surface
Temperature
DTTS: -40 to 185 °F (-40 to +85 °C); DTTH: -40 to +350 °F (-40 to +176 °C)
DTTN/DTTC: -40 to +250 °F (-40 to +121 °C)
Enclosure NEMA 3 (Type 3) ABS or polycarbonate, brass or SS hardware,
3W 6L 2.5H inches (75W 150L 63L mm), pipe mount
Transducer Type Clamp-on, uses time of flight ultrasonics
Pipe Sizes ½ inch (12 mm) and larger
Pipe Materials Carbon steel, stainless steel, copper, and plastic
Accuracy DTTN/DTTH: ±1% of reading at rates >1 FPS (0.3 MPS); ±0.01 FPS (±0.003 MPS) at rates lower than
1 FPS (0.3 MPS)
DTTS/DTTC: 1" and larger units ±1% of reading from 10-100% of measuring range, ±0.01 FPS
(±0.003 MPS) at rates lower than 10% of measuring range; ½" and ¾" units ±1% FS
Refer to Form TFXL for applicable measuring ranges for each DTTS/DTTN transducer model
Repeatability ±0.5% of reading
Response Time 0.3 to 30 seconds, adjustable
Protection Reverse-polarity, surge suppression
Installation DTTN and DTTS Transducer
General Requirements: ANSI/ISA 82.02.01
Hazardous Locations: ANSI/ISA 12.12.01Class I Div 2 Groups C & D
DTTN Transducer and IS Barrier (-F option)
Hazardous Location Designation: Class I Div 1, Groups C & D; T5 Intrinsically Safe Exia
Process Control Equipment: CSA C22.2 No. 142
Intrinsically Safe Equipment: CSA C22.2 No. 157
Intrinsically Safe & Associated Apparatus: UL913
Energy Management Equipment: UL916
ULTRALINK ™Utility Windows®compatible software utility, requires serial communication cable
Windows 2000, Windows XP, Windows Vista®, and Windows®7 compatible
4-20mA Output (standard output)
Resolution
Power
Insertion loss
Loop impedance
12-bit for all outputs
Source
5V maximum
900 Ohms maximum
Can share ground common with
power supply — isolated from
piping system
Operation
Pulse duration
Source / sink
Logic
Normal state - High;
Pulses low with display
total increments
30mSec minute
2 mA maximum
5 VDC
Turbine Frequency Output / TTL - Pulse Output
Switch selectable
Type
Amplitude
Frequency range
Duty cycle
Non-ground referenced AC /
Ground referenced square-wave
500mVpp minimum / 5VDC
0-1,000Hz
50% ±10%
Totalizer Pulse

Rev. 01/11 -1.8- TFXL-X
PART 1 - TERMINOLOGY
PC INTERFACE
CABLE

Rev. 01/11 -1.9- TFXL-X
PART 1 - TRANSMITTER INSTALLATION
After unpacking, it is recommended to save the shipping carton and
packing materials in case the instrument is stored or re-shipped.
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 TFXL system. If this is not possible, it is
recommended that the cable be exchanged for one that is of
proper length. Both transducer cables must be of the same
length.
NOTE: The transducer cable carries low level, high frequency
signals. In general, it is not recommended to add additional cable to
the cable supplied with the DTTN, DTTH, DTTS or DTTC
transducers. If additional cable is required, contact the Dynasonics
factory to arrange an exchange for a transducer with the appropriate
length of cable. Cables to 990 feet (300 meters) are available. To
add cable length to a transducer, the cable must be the same type
as utilized on the transducer. Twinaxial cables can be lengthened
with like cable to a maximum overall length of 100 feet (30 meters).
Coaxial cables can be lengthened with RG59 75 Ohm cable and
BNC connectors to 990 feet (300 meters).
2. Mount the TFXL 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. If the transmitter will be subjected to a wet environment, it is
recommended that the cover remain closed after configuration is
completed. The faceplate of the TFXL is watertight, but avoid
letting water collect on it. 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
watertight 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 holes are utilized for I/O
wiring.
Transmitter
Installation

Rev. 01/11 -1.10- TFXL-X
To access terminal strips for electronic connectors, loosen the four
screws in the display lid and remove the cover. The terminals where
the transducers connect are located underneath the display. To
connect transducers, remove the four screws that secure the display
and carefully move it out of the way. Do not over stress the ribbon
cable located between the display and the microprocessor circuit
boards.
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.
PART 1 - TRANSMITTER INSTALLATION
Transducer
Connections
Figure 1.4
Remote Transducer Connections

Rev. 01/11 -1.11- TFXL-X
2. The terminals within the TFXL are a cable-clamp type. Connect
the appropriate wires to the corresponding screw terminals in the
transmitter. See Figure 1.4 on page 1.10. Secure wires by
tightening to between 0.5 and 0.6 Nm of torque.
NOTE: The transducer cable carries low level, high frequency
signals. In general, it is not recommended to add additional cable to
the cable supplied with the DTTN, DTTH, DTTS or DTTC
transducers. If additional cable is required, contact the Dynasonics
factory to arrange an exchange for a transducer with the appropriate
length of cable. Cables to 990 feet (300 meters) are available. To
add cable length to a transducer, the cable must be the same type
as utilized on the transducer. Twinaxial cables can be lengthened
with like cable to a maximum overall length of 100 feet (30 meters).
Coaxial cables can be lengthened with RG59 75 Ohm cable and
BNC connectors to 990 feet (300 meters).
FIELD WIRING — GENERAL
The remote mount TFXL is equipped with two conduit holes located
in the flow meter enclosure that should be suitable for most
installations. A sealed cord grip or NEMA 4 conduit connection
should be utilized to retain the NEMA 3 integrity of the flow meter
enclosure. Failure to do so will void the manufacturer’s warranty and
can lead to product failure.
Wiring methods and practices are to be made in accordance with
the NEC—National Electrical Code®—and/or other local ordinances
that may be in effect. Consult the local electrical inspector for
information regarding wiring regulations.
When making connections to the field wiring terminals inside the
flow meter, strip back the wire insulation approximately 0.25 inch
(6 mm). Stripping back too little may cause the terminals to clamp
on the insulation and not make good contact. Stripping back too
much insulation may lead to a situation where the wires could short
together between adjacent terminals. Wires should be secured in
the field wiring terminals using a screw torque of between 0.5 and
0.6 Nm.
FIELD WIRING — POWER
Power for the TFXL flow meter is obtained from a direct current
(DC) power source. The power source should be capable of
supplying between 11 and 30 Vdc at a minimum of 0.25 Amps or
250 milliamps. With the power from the DC power source disabled
PART 1 - TRANSMITTER INSTALLATION
Transmitter
Power
Connections
DC Power
Supply

Rev. 01/11 -1.12- TFXL-X
or disconnected, connect the positive supply wire and ground to the
appropriate field wiring terminals in the flow meter. See Figure 1.5.
A wiring diagram decal is located on the inner cover of the flow
meter enclosure.
If the flow meter is only to be utilized as a flow rate indicator or
totalizer, no further wiring will be required. Skip to Page 1.17.
PART 1 - TRANSMITTER INSTALLATION
Figure 1.5
DC Power Connection
11- 30 VD C
DC Ground
11 to 30 Vdc
IMPORTANT NOTE:
Not following instructions properly may impair
safety of equipment and/or personnel.
IMPORTANT NOTE:
Must be operated by a power supply suitable
for the location.
IMPORTANT NOTE:
Do not connect or disconnect either power or
outputs unless the area is known to be non-
hazardous.
IMPORTANT NOTE:
Do not connect the interface cable between a
TFXL and a personal computer unless the
area is known to be non-hazardous.
!
!
!
!

Rev. 01/11 -1.13- TFXL-X
CONNECTING THE 4-20 mA OUTPUT
The TFXL is equipped with a ground-referenced 4-20 mA output—
the output shares a common ground with the power supply. The
output transmits a continuous current output that is proportional to
liquid flow rate. The output was scaled at the Dynasonics factory
and the scaling information is recorded on the label located on the
side of the TFXL enclosure. To ensure that the instrument or data
acquisition system that is receiving the 4-20 mA signal
responds properly, it must be spanned identically to the TFXL.
The 4-20 mA output is designed to source current across a loop
resistance that is typically located within a data acquisition system
or other receiving instrument. The maximum resistance that the
TFXL can accommodate is directly related to the DC power source
that is powering the flow meter and the 4-20 mA loop. Chart 1.1
illustrates the range of load resistance that can be used with a given
power supply voltage. Ensure that the loop load resistance is within
the shaded region of the graph or non-linearity and transmitting
errors will occur.
The 4-20 mA output is polarized and since the output shares the DC
common with the power supply, reversing the connections can
cause a short circuit in the DC power circuit. Figure 1.6 on page
1.14 shows a block diagram of how the 4-20 mA interfaces with the
receiving device.
PART 1 - INPUT/OUTPUT CONFIGURATION
Output
Configuration
Chart 1.1
4-20 mA Loop Load
Ope rate
in the
Sha ded
Reg ion

Rev. 01/11 -1.14- TFXL-X
Connect the wires to the appropriate Field Wiring Terminals within
the TFXL enclosure. See Figure 1.7.
PART 1 - INPUT/OUTPUT CONFIGURATION
Figure 1.6
4-20 mA Block Diagram
4-20 mA Ground
4-20 mA Output
Figure 1.7
4-20 mA Connections

Rev. 01/11 -1.15- TFXL-X
CONNECTING THE PULSE OUTPUT
The TFXL is equipped with a circuit that outputs a pulse waveform
that varies proportionally with flow rate. The quantity of pulses per
unit volume of liquid is described by the K-factor that is recorded on
the side of the flow meter enclosure. To ensure that accurate
readings are being recorded by the receiving instrument, the TFXL
and the receiving instrument must have identical K-factor values
programmed into them.
The K-factor for TFXL transmitters utilizing small pipe transducers
(DTTS and DTTC) are fixed. These values are recorded on the side
of the TFXL enclosure.
If the TFXL is to be used on large pipes (2" and above), the K-factor
must be calculated for the particular maximum flow rate pro-
grammed into the meter. The K-factor is:
For example – the full scale flow for a 1" pipe is 15 GPM. The K-
factor would then be:
Two pulse output options are available with the TFXL:
 Turbine meter simulation (SW1 ON) — This option is utilized
when a receiving instrument is capable of interfacing directly with
a turbine flow meter’s magnetic pickup. The output is a relatively
low voltage AC signal that is not ground referenced. The
minimum AC amplitude is approximately 500 mV peak-to-peak.
This option is selected by placing SW1 in the ON position. See
Figure 1.8 on page 1.16.
 TTL pulse frequency (SW1 OFF) — This option is utilized when
a receiving instrument requires that the pulse voltage level be
either of a higher potential and/or referenced to DC ground. The
output is a square wave with a peak-to-peak voltage swing of 5
volts.
This option is selected by placing SW1 in the OFF position. See
Figure 1.8 on page 1.16.
PART 1 - INPUT/OUTPUT CONFIGURATION
60,000 = 3,000 pulses per gallon
15 GPM
60,000 = K-factor
Full Scale Flow

Rev. 01/11 -1.16- TFXL-X
RATE PULSE OUTPUT CONNECTIONS
Connection of rate pulse output is simply a matter of connecting the
two field wiring terminals to the pulse input on the receiving
instrument and verifying that the K-factor is programmed into the
receiving instrument.
The simulated turbine output is not referenced to DC ground and is
not polarized, so wiring polarity is not important. See Figure 1.9.
The TTL output is referenced to DC ground and is polarized. When
using the TTL pulse, connect the plus (+) field terminal in the flow
meter to the frequency input on the receiving instrument. Connect
the negative (-) field terminal to the frequency input negative or DC
common connection in the receiving instrument. See Figure 1.9.
PART 1 - INPUT/OUTPUT CONFIGURATION
Figure 1.8
Rate Pulse Output Switch Positions
Figure 1.9
Pulse Output Field Wiring Connections

Rev. 01/11 -1.17- TFXL-X
APPLYING POWER TO THE TFXL
The TFXL flow meter 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.
1. Verify that all wiring is properly connected and routed as
described in this manual.
2. Verify that the flow sensor is properly mounted and that the
acoustic grease is intact between the transducer faces and the
pipe.
3. Apply power. The displays of the TFXL2 and TFXL4 (models
with a display) will display a display test where all segments will
illuminate in succession and then the software version will be
displayed. The meter will then enter RUN Mode. If the flow meter
is a TFXL1 or TFXL3 (models without a display) verify that one
of the red LEDs on the main printed circuit board is illuminated
continuously and that the other one begins to blink.
4. Upon entering RUN Mode, the TFXL2 and TFXL4 will provide
one of the following responses:
 The display may indicate ERROR 0010, which indicates low
signal strength.
NOTE: ERROR 0010 alternates with the flow totalizer value.
Low signal strength is caused by one of the following:
 an empty pipe (gas locked)
 gas content in the liquid is excessive
 inadequate acoustic grease between the flow meter
transducer and the pipe
 a broken connection between a transducer and the main
circuit board—check wire terminations under the display.
 The display may indicate a flow rate.
 If 0.000 is indicated, it means that the meter is operating
properly, but that the liquid is not moving.
 A negative value would indicate that flow is moving
backwards—against the flow direction arrow. A standard
TFXL will not output flow signals under this condition.
 The flow meter indicates flow rate. This verifies that
signal strength is adequate and that the flow is moving in
the direction that the flow arrow signifies.
PART 1 - STARTUP AND CONFIGURATION
Before
Starting the
Instrument
Instrument
Startup
Important!

Rev. 01/11 -1.18- TFXL-X
TFXL1 and TFXL3 Responses — The TFXL1 and TFXL3 are not
equipped with a display, so troubleshooting requires the use of a
computer and a PC interface cable. See Part 3 of this manual.
PART 1 - STARTUP AND CONFIGURATION