dynasonics TFXL series User Manual
Transit Time Ultrasonic Flow Meters
TFXL Meter
TTM-UM-00369-EN-03 (April 2016)
User Manual
Transit Time Ultrasonic Flow Meters, TFXL Meter
Page ii April 2016TTM-UM-00369-EN-03
User Manual
CONTENTS
Scope of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Terminology and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Quick-Start Operating Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Items Required for Basic Installation and Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Transducer Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Transducer Connections for Remote Mount Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Initial Settings and Powerup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pipe Preparation and Transducer Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Application Versatility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Temperature Ratings for Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
User Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Data Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Product Identication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Transmitter Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Transmitter Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Transducer Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DC Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Transducer Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Select a Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Select a Mounting Conguration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Enter the Pipe and Liquid Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mount the Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Transducer Mounting Congurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Inputs/Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Standard 4…20 mA Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Totalizer Output Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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Transit Time Ultrasonic Flow Meters, TFXL Meter
Frequency Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Parameter Conguration Using UltraLink Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Additional Parts Required for Conguration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Conguration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Basic Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Filtering Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Remove the Zero Oset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Select Flow Rate Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Set Multiple Flow Rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Target Dbg Data Screen Denitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Saving the Conguration on a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Printing a Conguration Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
UltraLink Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
KFactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Calculating KFactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
North American Pipe Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Fluid Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Brad Harrison® Connector Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Control Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Software Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Part Number Construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Page iv April 2016TTM-UM-00369-EN-03
Scope of This Manual
SCOPE OF THIS MANUAL
This manual is divided into two main sections:
• “Quick-Start Operating Overview” on page 6 is intended to help you get the TFXL meter up and running quickly. Refer to
the detailed instructions if you require additional information.
• The remaining chapters provide a detailed description of all software settings and hardware installation guidance.
Read this manual carefully before attempting any installation or operation. Keep the manual accessible for future reference.
UNPACKING AND INSPECTION
Upon opening the shipping container, visually inspect the product and applicable accessories for any physical damage such
as scratches, loose or broken parts, or any other sign of damage that may have occurred during shipment.
OTE:N If damage is found, request an inspection by the carrier’s agent within 48 hours of delivery and file a claim with the
carrier. A claim for equipment damage in transit is the sole responsibility of the purchaser.
SAFETY
Terminology and Symbols
Indicates a hazardous situation, which, if not avoided, is estimated to be capable of causing death or serious
personal injury.
Indicates a hazardous situation, which, if not avoided, could result in severe personal injury or death.
Indicates a hazardous situation, which, if not avoided, is estimated to be capable of causing minor or moderate
personal injury or damage to property.
Considerations
The installation of the TFXL meter must comply with all applicable federal, state, and local rules, regulations, and codes.
EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
AVERTISSMENT
RISQUE D’EXPLOSION - LA SUBSTITUTION DE COMPOSANTS PEUT RENDRE CEMATÉRIEL INACCCEPTABLE POUR LES
EMPLACEMENTS DE CLASSE I, DIVISION 2.
DO NOT CONNECT OR DISCONNECT EITHER POWER OR OUTPUTS UNLESS THE AREA IS KNOWN TO BE NONHAZARDOUS.
AVERTISSMENT
RISQUE D’EXPLOSION. NE PAS DÉBRANCHER TANT QUE LE CIRCUIT EST SOUSTENSION, À MOINS QU’LL NE S’AGISSE
D’UN EMPLACEMENT NON DANGEREUX.
MPORTANTI
Not following instructions properly may impair safety of equipment and/or personnel.
MPORTANTI
Must be operated by a Class 2 supply suitable for the location.
Page 5 April 2016 TTM-UM-00369-EN-03
Quick-Start Operating Overview
QUICKSTART OPERATING OVERVIEW
Items Required for Basic Installation and Conguration
• TFXL meter
• Transducers (remote-mount versions sold separately)
• Mounting straps (for remote-mount versions)
• Acoustic couplant
• Power source
• UltraLink Software
• Configuration cable kit P/N D010-0204-001
• USB-to-DB9 converter P/N D005-2116-004 (required if PC does not have a serial port)
• Phillips screwdriver
• Flathead screwdrivers (large and small)
• 5/16 in. nut driver (optional, for remote-mount versions)
Follow these instructions to get the system up and running quickly. Refer to the detailed instructions if you require
additional information.
OTE:N The following steps require information supplied by the transmitter itself so it will be necessary to supply power
to the transmitter, at least temporarily, and connect to a computer using the UltraLink® software utility to obtain
setup information.
Transducer Location
1. Select a mounting location on the piping system with a minimum of ten pipe diameters (10 × the pipe inside diameter) of
straight pipe upstream and ve straight diameters downstream. See Table 1 on page 16 for additional congurations.
2. If the application requires DTTR, DTTN or DTTH transducers, select a mounting method for the transducers based on pipe
size and liquid characteristics. See Table 2 on page 17. The three transducer mounting congurations are shown in
Figure 4. See “Transducer Mounting Configurations” on page 20 for mounting procedures.
OTE:N All DTTS and DTTC transducers use V–Mount configuration.
Power Connections
Power for the TFXL meter flow meter is obtained from a direct current (DC) power source.
1. Verify that the power source is capable of supplying 12…28V DC at a minimum of 250 milliamps.
2. With the power from the DC power source disabled or disconnected, connect the positive supply wire and ground to the
appropriate eld wiring terminals in the ow meter. See Figure 1. A wiring diagram decal is on the inside cover of the ow
meter enclosure.
DC Ground
12 . . . 28V DC
DC Ground
12 . . . 28V DC
PIC16F628
O
N
1
Figure 1: Power connections
Transducer Connections for Remote Mount Transducers
1. Guide the transducer terminations through the transmitter conduit hole on the bottom-left of the enclosure using a
sealed cord grip or NEMA 4 conduit connection. Secure the transducer cable with the supplied conduit nut (if exible
conduit was ordered with the transducer).
Page 6 April 2016TTM-UM-00369-EN-03
Quick-Start Operating Overview
2. The remote mount transducers use an add-in connection board on the left side of the meter below the LCD (TFXL meter
2 version). The terminals within the TFXL meter are of a screw-down barrier terminal type. Connect the wires at the
corresponding screw terminals in the transmitter. Observe upstream and downstream orientation and wire polarity. See
Figure 2 on page 7.
Upstream
Transducer
Up Blue/Red
Up White/Black
Down White/Black
Down Blue/Red
Downstream
Transducer
Figure 2: Remote mount connections
Initial Settings and Powerup
1. Apply power to the transmitter.
2. Enter the following data into the TFXL meter via the UltraLink software utility.
1 Transducer mounting method 7 Pipe liner thickness
2 Pipe O.D. (Outside Diameter) 8 Pipe liner material
3 Pipe wall thickness 9 Fluid type
4 Pipe material 10 Fluid sound speed*
5 Pipe sound speed* 11 Fluid viscosity*
6 Pipe relative roughness* 12 Fluid specific gravity*
OTE:N * Nominal values for these parameters are included within the transmitter operating system. The nominal values may
be used as they appear or may be modified if the exact system values are known.
3. Record the value calculated and displayed as transducer spacing.
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Quick-Start Operating Overview
Pipe Preparation and Transducer Mounting
DTTR, DTTN and DTTH Transducers
1. Place the transmitter in signal strength measuring mode.
This value is available on the data display of the UltraLink
software utility.
2. The pipe surface, where the transducers are to be mounted,
must be clean and dry. Remove scale, rust or loose paint to
ensure satisfactory acoustic conduction. Wire brushing the
rough surfaces of pipes to smooth bare metal may also be
useful. Plastic pipes do not require preparation other than
cleaning. On horizontal pipe, choose a mounting location within
approximately 45 degrees of the side of the pipe.
See Figure 5 on page 9. Locate the ow meter so that the
pipe will be completely full of liquid when ow is occurring in
the pipe. Avoid mounting on vertical pipes where the ow is
moving in a downward direction.
3. Apply a single 1/2 inch (12 mm) bead of acoustic couplant
grease to the upstream transducer and secure it to the pipe with
a mounting strap.
4. Apply acoustic couplant grease to the downstream transducer and press it onto the pipe using hand pressure at the lineal
distance calculated in “Transducer Location” on page 6.
5. Space the transducers according to the recommended values from the UltraLink software utility. Secure the transducers
with the mounting straps at these locations.
Downstream+
DownstreamUpstreamUpstream+
Figure 3: Transducer connections
TOP VIEW
OF PIPE
TOP VIEW
OF PIPE
TOP VIEW
OF PIPE
W-Mount V-Mount Z-Mount
Figure 4: Transducer mounting configurations
Page 8 April 2016TTM-UM-00369-EN-03
Quick-Start Operating Overview
TOP OF
PIPE
45°
YES
45°
FLOW METER
MOUNTING ORIENTATION
DTTS and DTTC TRANSDUCERS
45°
YES
45°
TOP OF
PIPE
45°
YES
45°
FLOW METER
MOUNTING ORIENTATION
DTTR, DTTN and DTTH TRANSDUCERS
45°
45°
2” DTTS and DTTC TRANSDUCERS
45°
YES
45°
TOP OF
PIPE
YES
FLOW METER
MOUNTING ORIENTATION
45°
YES
45°
Figure 5: Transducer mounting orientations
DTTS and DTTC Transducers
1. Place the transmitter in signal strength measuring mode. This value is available on the transmitter’s display Service Menu or
in the data display of the UltraLink software utility.
2. The pipe surface, where the transducers are to be mounted, must be clean and dry. Remove scale, rust or loose paint
to provide satisfactory acoustic conduction. Wire brushing the rough surfaces of pipes to smooth bare metal may also
be useful. Plastic pipes do not require preparation other than cleaning. On horizontal pipe, choose a mounting location
within approximately 45 degrees of the side of the pipe. See Figure 5 on page 9. Locate the ow meter so that the pipe
will be completely full of liquid when ow is occurring in the pipe. Avoid mounting on vertical pipes where the ow is
moving in a downward direction.
3. Apply a single 1/2 inch (12 mm) bead of acoustic couplant grease to the top half of the transducer and secure it to the pipe
with the bottom half or with U-bolts.
4. Tighten the nuts so the acoustic coupling grease begins to ow out from the edges of the transducer and from the gap
between the transducer and the pipe.
MPORTANTI
Do not overtighten. Overtightening will not improve performance and may damage the transducer.
5. Verify that signal strength is greater than 5.0.
6. Input the units of measure and the I/O data.
Page 9 April 2016 TTM-UM-00369-EN-03
Introduction
INTRODUCTION
The TFXL meter is designed to measure the fluid velocity of liquid within a closed conduit. The transducers are a noncontacting, clamp-on or clamp-around type, which provide the benefits of non-fouling operation and ease of installation.
The TFXL meter family of transit time transmitters uses 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-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 sound crosses the pipe once. The selection of how transducers are
mounted on opposite sides of the pipe and method is based on pipe and liquid characteristics, which both have an effect
on how much signal is generated. 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.
Application Versatility
The TFXL 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 1/2 …100 inches (12…2540 mm)*. A variety of liquid
applications can be accommodated:
ultrapure liquids cooling water potable water river water chemicals
plant effluent sewage reclaimed water others
Because the transducers are non-contacting and have no moving parts, the transmitter is not affected by system pressure,
fouling or wear.
Temperature Ratings for Transducers
Because the transducers are non-contacting and have no moving parts, the flow meter is not affected by system pressure,
fouling or wear. Temperature ratings for each transducer are listed below.
Transducer Temperature Rating
DTTR –40…250° F (–40…121° C)
DTTC –40…194° F (–40…90° C)
DTTN –40…194° F (–40…90° C)
DTTH –40…350° F (–40…177° C)
DTTS –40…140° F (–40…60° C)
User Safety
The TFXL meter uses a low voltage DC power source that provides electrical safety for the user. Remove the cover to access to
the meter connections and the computer interface connection.
DANGER
THE POWER SUPPLY BOARD CAN HAVE LINE VOLTAGES APPLIED TO IT, SO DISCONNECT ELECTRICAL POWER BEFORE
OPENING THE INSTRUMENT ENCLOSURE. WIRING SHOULD ALWAYS CONFORM TO LOCAL CODES AND THE NATIONAL
ELECTRICAL CODE.
Data Integrity
Non-volatile flash memory retains all user-entered configuration values in memory indefinitely, even if power is lost or
turned off.
Product Identication
The serial number and complete model number of the transmitter are located on the top outside surface of the transmitter
body. Should technical assistance be required, please provide our customer service department with this information.
Page 10 April 2016TTM-UM-00369-EN-03
Transmitter Installation
TRANSMITTER INSTALLATION
Transmitter Location
Mount the enclosure in an area that is convenient for servicing, calibration and observation of the LCD readout (if equipped).
1. Locate the transmitter within the length of transducer cables supplied. If this is not possible, exchange the cable for one
that is of proper length.
2. Mount the transmitter in a location:
◊ Where little vibration exists.
◊ That is protected from corrosive fluids.
◊ That is within the transmitters ambient temperature limits –40…185° F (–40…85° C).
◊ That is out of direct sunlight. Direct sunlight may increase transmitter temperature to above the maximum limit.
3. See Figure 6 for enclosure and mounting dimension details. Allow enough room for door swing, maintenance and conduit
entrances.
4. Secure the enclosure to a at surface with two fasteners.
5. Feed the cables through the conduit holes in the enclosure. Use plugs to seal any unused holes.
OTE:N Use NEMA 4 (IP-65) rated fittings/plugs to maintain the watertight integrity of the enclosure. Generally, the right side
conduit hole (viewed from front) is used for power, the bottom conduit hole(s) for transducer connections.
Enclosures
Integral Enclosure Remote Enclosure
A
B
B
E
C
D
Conduit hole
A
in. (mm)B in. (mm)C in. (mm)
6.72 (170.7) 3.17 (80.5) 2.57 (65.3) 0.87 (22.2) 1.33 (33.8) 0.85 (21.6) 0.77 (19.6) 1.78 (45.2) 3.74 (95) 0.22 (5.6) 7.01 (178)
D DIA
in. (mm)E in. (mm)F in. (mm)G in. (mm)H in. (mm)I in. (mm)
Figure 6: Transmitter enclosure dimensions
F
H
G
K
A
J
Two mounting holes
I
C
D
Conduit hole
in. (mm)K in. (mm)
E
F
J DIA
The remote mount transmitter has three conduit holes in the flow meter enclosure that should be suitable for most
installations. Use a sealed cord grip or NEMA 4 conduit connection 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.
The TFXL meter is housed in an insulating plastic enclosure that does not provide continuity of bonding between field wiring
conduit and the TFXL meter chassis or other conduits connected to the enclosure.
Page 11 April 2016 TTM-UM-00369-EN-03
Transmitter Installation
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 0.5…0.6 Nm.
If using the DC ground terminal as a protective conductor terminal, apply the protective conductor first and secure it
independently of other connections. Connect the protective conductor so it is unlikely to be removed by servicing that does
not involve the protective conductor or post a warning requiring the replacement of the protective conductor after removal.
Power the TFXL meter with a Class 2 direct current (DC) power source. The power source should be capable of supplying
12…28V DC at a minimum of 250 milliamps. With the power from the DC power source disabled or disconnected, connect the
positive supply wire and ground to the field wiring terminals in the flow meter. See Figure 8 on page 14. A wiring diagram is
on the inside cover of the meter enclosure.
MPORTANTI
• FOLLOW INSTRUCTIONS TO PROVIDE SAFETY OF EQUIPMENT AND/OR PERSONNEL.
• MUST BE OPERATED BY A POWER SUPPLY SUITABLE FOR THE LOCATION.
• DO NOT CONNECT OR DISCONNECT EITHER POWER OR OUTPUTS UNLESS THE AREA IS KNOWN
TO BE NONHAZARDOUS.
• DO NOT CONNECT THE INTERFACE CABLE BETWEEN A TFXL METER AND A PERSONAL COMPUTER UNLESS THE AREA IS
KNOWN TO BE NONHAZARDOUS.
Page 12 April 2016TTM-UM-00369-EN-03
Transducer Connections
TRANSDUCER CONNECTIONS
Figure 7: Transducer connections
To access terminal strips for wiring, first loosen the four screws holding the top of the case to the bottom.
OTE:N The four screws are “captive” screws and cannot be removed from the top of the case.
If the unit has a display, remove the four Phillips head screws that hold the display to the main circuit board and carefully
move it out of the way. Do not over stress the ribbon cable located between the display and the microprocessor
circuit boards.
Guide the transducer terminations through the transmitter conduit hole located in the bottom-left of the enclosure. Secure
the transducer cable with the supplied conduit nut (if flexible conduit was ordered with the transducer).
OTE:N TFXL meter with integral transducers have the transducers connected at the factory and the transducer connections
section can be skipped.
The terminals within the TFXL meter are of a screw-down barrier terminal type. Depending on the type of transducers being
used there are two terminal strip arrangements possible.
Remote mount small pipe transducers are connected to the terminals on the main circuit board.
Remote mount transducers are connected to a daughter board on the left side of the meter.
Connect the appropriate wires at the corresponding screw terminals in the transmitter. Observe upstream and downstream
orientation and wire polarity. See Figure 7.
OTE:N High temperature transducer cables come with red and black wire colors. For the red and black combination, the red
wire is positive (+) and the black wire is negative (–).
OTE:N The transducer cable carries low level, high frequency signals. In general, it is not recommended to add additional
length to the cable supplied with the transducers. If additional cable is required, contact the factory to arrange an
exchange for a transducer with the appropriate length of cable. Cables 100…990 feet (30…300 meters) are available
with RG59 75 Ohm coaxial cable.
Page 13 April 2016 TTM-UM-00369-EN-03
DC Power Connections
DC POWER CONNECTIONS
The TFXL meter should be operated from an 12…28V DC Class 2 power source capable of supplying a minimum of 250 mA
of current.
1. Feed the power source through the conduit hole on the right side of the enclosure. Connect power to the screw terminal
block in the TFXL meter. Use wiring practices that conform to local and national codes.
2. Connect the DC power to 12…28V DC In and DC Gnd., as in Figure 8.
DC Ground
DC Ground
11 - 28 VDC
Figure 8: DC power connections
3. Connect an 12…28V DC Class 2 power source as illustrated in Figure 8. TFXL meter terminal blocks can accommodate wire
up to 14 AWG.
4. Connect a switch or circuit breaker in close proximity of the TFXL meter and within easy reach of the operator.
5. Mark the switch or circuit breaker as the disconnect device for the TFXL meter.
11 - 28 VDC
Page 14 April 2016TTM-UM-00369-EN-03
Transducer Installation
TRANSDUCER INSTALLATION
The transducers for the TFXL meter contain piezoelectric crystals that transmit and receive ultrasonic signals through the
walls of liquid piping systems.
DTTR, DTTN and DTTH transducers are relatively simple and straightforward to install, but spacing and alignment of the
transducers is critical to the system’s accuracy and performance. CAREFULLY EXECUTE THESE INSTRUCTIONS.
DTTS and DTTC small pipe transducers have integrated transmitter and receiver elements that eliminate the requirement for
spacing measurement and alignment.
Mounting the DTTR, DTTN and DTTH clamp-on ultrasonic transit time transducers takes four steps:
1. Select the optimum location on a piping system.
2. Select a mounting conguration.
3. Enter the pipe and liquid parameters into the UltraLink software utility or key them into the transmitter. The UltraLink
software utility or the transmitter’s rmware calculates proper transducer spacing based on these entries.
4. Prepare the pipe and mount the transducers.
Mounting Location
Select a 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 is defined as:
• A piping system that is completely full of liquid when measurements are being taken. If the pipe may become completely
empty during a process cycle an error code 0010 (Low Signal Strength) will be displayed on the transmitter while the
pipe is empty. This error code will clear automatically once the pipe refills with liquid. Do not mount the transducers in an
area where the pipe may become partially filled, such as the highest point in a flow loop. Partially filled pipes will cause
erroneous and unpredictable operation of the transmitter.
• A piping system that contains lengths of straight pipe such as those described in Table 1 on page 16. The optimum
straight pipe diameter recommendations apply to pipes in both horizontal and vertical orientation. The straight runs in
Table 1 apply to liquid velocities that are nominally 7 fps (2.2 mps). As liquid velocity increases above this nominal rate, the
requirement for straight pipe increases proportionally.
• An area where the transducers will not be inadvertently bumped or disturbed during normal operation.
• NOT on downward flowing pipes unless adequate downstream head pressure is present to overcome partial filling of or
cavitation in the pipe.
Page 15 April 2016 TTM-UM-00369-EN-03
Transducer Installation
Piping Conguration
and Transducer Positioning
Flow
*
Flow
*
Flow
**
**
Upstream
Pipe
Diameters
Downstream
* **
24
14
10
Pipe
Diameters
5
5
5
Flow
Flow
Flow
*
*
*
*
Table 1: Piping configuration and transducer positioning
**
**
**
**
10
10
24
5
5
5
The TFXL meter will provide repeatable measurements on piping systems that do not meet these pipe diameter requirements,
but the accuracy of the readings may be influenced.
Page 16 April 2016TTM-UM-00369-EN-03
Transducer Installation
Select a Mounting Conguration
The transmitter can be used with five transducer types: DTTR, DTTN, DTTH, DTTS and DTTC. Meters that use the DTTR, DTTN
or DTTH transducer sets consist of two separate sensors that function as both ultrasonic transmitters and receivers. These
transducers are clamped on the outside of a closed pipe at a specific distance from each other. DTTS and DTTC transducers
integrate both the transmitter and receiver into one assembly that fixes the separation of the piezoelectric crystals.
The DTTR, DTTN and DTTH transducers can be mounted in:
• W-Mount where the sound traverses the pipe four times. This mounting method produces the best relative travel time
values but the weakest signal strength.
• V-Mount where the sound traverses the pipe twice. V-Mount is a compromise between travel time and signal strength.
• Z-Mount where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once. Z-Mount
will yield the best signal strength but the smallest relative travel time.
Transducer Mounting
Configuration
Pipe Material Pipe Size Liquid Composition
Plastic (all types)
W-Mount
Carbon Steel
Stainless Steel
Copper
Ductile Iron
2…4 in. (50…100 mm)
Not recommended
Cast Iron
Plastic (all types)
V-Mount
Carbon Steel
Stainless Steel
Copper 4…30 in. (100…750 mm)
Ductile Iron
Cast Iron
4…12 in. (100…300 mm)
Low TSS (Total Suspended
Solids); non-aerated
2…12 in. (50…300 mm)
Plastic (all types) > 30 in. (> 750 mm)
Z-Mount
Carbon Steel
Stainless Steel
Copper > 30 in. (> 750 mm)
Ductile Iron
Cast Iron
Table 2: Transducer mounting modes for DTTR, DTTN and DTTH
> 12 in. (> 300 mm)
> 12 in. (> 300 mm)
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. The selection of mounting method is based on pipe and liquid characteristics which both have
an effect on how much signal is generated. The transmitter 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 appropriate mounting configuration is based on pipe and liquid characteristics. Selecting the proper transducer
mounting method is an iterative process. Table 2 contains recommended mounting configurations for common applications.
These recommended configurations may need to be modified for specific applications if such things as aeration, suspended
solids, out-of-round piping or poor piping conditions are present.
TOP VIEW
OF PIPE
W-Mount V-Mount Z-Mount
TOP VIEW
OF PIPE
Figure 9: Transducer mounting modes for DTTR, DTTN and DTTH
TOP VIEW
OF PIPE
Page 17 April 2016 TTM-UM-00369-EN-03
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