Dynasonics TFXP User Manual

Series TFXP

Transit Time Ultrasonic Flow Meter

Operations & Maintenance

Manual

BEFORE OPERATING THE TFXP

Important
Notice!

The TFXP flow meter is equipped with a lead-acid Gel Cell battery.
This battery will require charging before initial operation.

Apply power, utilizing the enclosed 12 volt DC output line power
converter or auto-style power cord, to the TFXP for a period of 16­24 hours prior to using the product for the first time. The power
converter connects to the DC IN +12V socket connection located on
the side of the enclosure. See Figure 1.1. A fully charged battery
will provide up to 24 hours of continuous operation before
recharging will be necessary.

Figure 1.1 — Power Connection

When the battery level has decreased to a point where recharging is
required, the LOW BATTERY indicator will illuminate on the front
panel. At that point, the meter will only operate a short time more
until it automatically turns itself off – preventing excessive battery
discharge that can damage the Gel Cell battery. The TFXP has an
integral charging circuit that prevents overcharging. The instrument
can be permanently connected to AC line power without damaging
the flow meter or the battery. Page 1.12 of this manual contains
additional recommendations to preserve and maximize the power in
the TFXP battery.

If the TFXP is to be used for extended periods of operation, the AC
power converter or the 12 volt auto-style converter can remain
connected indefinitely.

Rev. 5/09 -1.1- TFXP

TABLE OF CONTENTS

Part 1 -
Introduction

Connections

Inputs and
Outputs

Quick-Start Operating Instructions 1.4 - 1.6

Introduction
General 1.7
Applications 1.7
Product Matrix 1.8
Product Specifications 1.9

Transmitter Connections 1.10 - 1.11
Battery Charging and Maintenance 1.12 - 1.13

Input/Output Connections and Options
4-20 mA Output 1.14
Optional Data Logger 1.15

Other Optional ISO-MODs 1.15

Pages

Part 2 -
Transducer
and RTD
Installation

Part 3 ­ Operation

General 2.1
Mounting Location 2.2 - 2.3
Transducer Spacing 2.4 - 2.7
Transducer Mounting, Pipe Preparation 2.8 - 2.9
Transducer Mounting, V-Mount and W-Mount 2.9 - 2.11
Transducer Mounting, DTTH High Temp 2.12
Transducer Mounting, DTTS/DTTC Small Pipe 2.12 - 2.13
Transducer Mounting, Z-Mount 2.13 - 2.15
Mounting Track Installation 2.16 - 2.17
RTD Installation 2.18 - 2.20

General Programming Information 3.1 - 3.4
Startup and Configuration 3.1

Rev. 5/09 -1.2- TFXP

TABLE OF CONTENTS

Part 3 ­ Operation

(continued)

Part 4 -
Software

Pages

Keypad Entry Detail 3.4 - 3.33
BASIC MENU 3.4 - 3.16
DATALOG OPERATION 3.17 - 3.23
OUT2 MENU 4-20 mA 3.24 - 3.30
Optional Input/Output 3.31 - 3.35
SENSOR MENU 3.36
SECURITY MENU 3.36 - 3.37
SERVICE MENU 3.37 - 3.39
Signal Strength 3.37
Setting ZERO Flow 3.38
DISPLAY MENU 3.39 - 3.40

Software Utility Operation
ULTRALINK™ 4.1 - 4.14
Data Logger 4.15 - 4.17

Heat Flow Addendum A.1 - A.6

Appendix
Keypad Interface Map
Error Codes
K-Factors Explained
Fluid Characteristic Table
TFX Communications Using ULTRALINK™
Digital Communications Protocol
Pipe Dimension Charts
Velocity to Volumetric Conversion
Statement of Warranty
Terms & Conditions
Customer Service

Rev. 5/09 -1.3- TFXP

QUICK-START OPERATING INSTRUCTIONS

This manual contains detailed operating instructions for all aspects
of the TFXP instrument. The following condensed instructions are
provided to assist the operator in getting the instrument configured
and measuring 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.

Transducer
Location

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. See Table 2.1 on page 2.3 for additional
configurations.

B. Select a mounting method for the transducers based on pipe

size and liquid characteristics. See Table 2.2 on page 2.5.
Transducer mounting configurations are illustrated in

Figure 1.2.

¹ Nominal values for these

parameters are included
within the TFXP operating
system.

The nominal values may be
used as they appear or may
be modified if exact system
values are known.

C. Enter the following data into the TFXP transmitter via the

integral keypad or ULTRALINK™ software utility.

1. Transducer mounting method

2. Pipe O.D. (outside diameter)

3. Pipe wall thickness

4. Pipe material

5. Pipe sound speed ¹

6. Pipe relative roughness ¹

7. Pipe liner thickness (if present)

8. Pipe liner material

9. Fluid type

10. Fluid sound speed ¹

11. Fluid viscosity ¹

12. Fluid specific gravity ¹

(if present)

D. Record the value calculated and displayed as Transducer

Spacing (XDCR SPC).

Figure 1.2 — Transducer Mounting Configurations

Rev. 5/09 -1.4- TFXP

QUICK-START OPERATING INSTRUCTIONS

Connections

2. TRANSDUCER/POWER CONNECTIONS

A. Route the transducer cables from the transducer mounting

location back to the TFXP transmitter. If additional cable and
connections are required, ensure that they are RG59 75
compatible.

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 or DTTS 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. If additional
cable and connections are added, ensure that they are RG59
75

Ohm compatible.

B. Refer to the wiring diagram located on the inside of the TFXP

transmitter and Figure 1.3 for proper power and transducer
connections.

Ohm

Figure 1.3 — Transmitter Connections

3. PIPE PREPARATION AND TRANSDUCER MOUNTING
DTTN and DTTH Transducers

A. Place the flow meter in signal strength measuring mode.

This value is available on the TFXP display (Service Menu) or
in the Data display of the ULTRALINK™ software utility.

B. The piping surface, where the transducers are to be

mounted, must be clean and dry. Remove loose scale, rust
and paint to ensure satisfactory acoustical bonds. Grind
rough surfaces of pipes to smooth bare metal. Plastic pipes
do not require preparation other than cleaning.

Rev. 5/09 -1.5- TFXP

QUICK-START OPERATING INSTRUCTIONS

C. Apply a single 1/2" (12 mm) bead of couplant grease to the

upstream transducer and secure it to the pipe with a
mounting strap.

D. Apply acoustic couplant grease to the downstream

transducer and press it onto the pipe using hand pressure at
the lineal distance calculated in Step 1.

E. Move the transducer slowly around the mounting area until

the highest signal strength is observed. Secure with a mounting
strap at this location.

DTTS and DTTC Transducers

A. Place the flow meter in signal strength measuring mode.

This value is available on the TFXP display (Service Menu) or
in the Data display of the ULTRALINK™ software utility.

B. The pipe surface, where the transducers are to be mounted,

must be clean and dry. Remove loose scale, rust and paint
to ensure satisfactory acoustical bonds. Grind rough
surfaces of pipes to smooth bare metal. Plastic pipes do not
require preparation other than cleaning.

Startup

C. Apply a single 1/2" (12 mm) bead of acoustic couplant grease

to the top half of the transducer and secure it to the pipe with
bottom half or U bolts.

D. Tighten the wing nuts so that the grease begins to flow out

from the edges of the transducer and from the gap between
the transducer halves. Do not over tighten.

4. INITIAL SETTINGS AND POWER UP

A. Press the ON button on the flow meter keypad.
B. From the Service Menu, verify that signal strength is greater

than 2.0%.

C. Input proper units of measure and I/O data.

Rev. 5/09 -1.6- TFXP

PART 1 - INTRODUCTION

General

The TFXP ultrasonic flow meter is designed to measure the fluid
velocity of liquid within closed conduit. The transducers are a non­contacting, clamp-on or clamp-around type, which will provide
benefits of non-fouling operation and ease of installation.

TFXP transit time flow meters
utilize two transducers that function
as both ultrasonic transmitters and
receivers. See Figure 1.4. DTTN
and DTTH 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 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.

Ultrasonic Transmission

Figure 1.4 —

Through a Field

Application
Versatility

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 TFXP 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 1/2 inch
(12 mm) and larger. (Transducer sets from 1/2 to 1-1/2 inch require
2 MHz transmitters and dedicated pipe transducers.) A variety of
liquid applications can be accommodated:

ultrapure liquids sewage cooling water
potable water reclaimed water river water
chemicals plant effluent others

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

Rev. 5/09 -1.7- TFXP

PART 1 - INTRODUCTION

temperature of 250 °F (121 °C). High temperature DTTH transducers
can operate to a pipe surface temperature of 350 °F (177 °C). The
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).

User Safety

The TFXP employs modular construction and provides electrical
safety for the operator. The display face contains voltages no
greater than 10 VDC. All user connections are made through
sealed bulk-head plugs located on the side of the TFXP enclosure.

Data Integrity

Non-volatile FLASH memory retains all user-entered configuration
values in memory for several years (at 25 °C), even if power is lost
or the unit is turned off. Data Logger values are stored in FLASH
memory in the logger. Password protection is provided as part of
the Security menu and prevents inadvertent configuration changes
or totalizer resets.

Product
Identification

The serial number and complete model number of your TFXP are
located on the inside of the transmitter’s front cover. Should
technical assistance be required, please provide the Dynasonics
Customer Service Department with this information.

Product Matrix

TFXP -    A -  

Power Supply

A) 115 VAC
B) 230 VAC

(two round terminals)

C) 100 VAC
G) 230 VAC

(three rectangular
terminals)

Output 2

1) 4-20 mA (Standard)

3) Rate Pulse

4) RS232

5) RS485

6) 200,000 event Data Logger*

7) BTU (-40 to +200 °C)

8) BTU (0 to +50 °C)

9) BTU (0 to +100 °C)

Output 1

N) None (Standard)

6) 200,000 event Data Logger*

Approvals

N) Ordinary Area
F) Intrinsically Safe**

(Class I, Div. 1, Group C, D)

Options

N) None
H) High Temp Transducers 350 °F (177 °C)

2) 2 MHz DTTS Transducers (pipe sizes less than 2" (50 mm)

* The data logger records up to 30,000 points per file, with a maximum of 16 files. The total number of

points that can be recorded on the logger is 200,000.

** I.S. DTTN Transducers must be ordered separately.

Replacement Parts Part Number
TFXP Flow meter D040-0110-001

Data Logger, 200,000-event D020-1045-104
Padded carrying case D003-1012-002
Transducers, set of two D071-0110-000
High Temp Transducer Cable Set D071-0110-001
Transducer Cable set, 20 ft. (6 m) D005-2112-020
Transducer Cable set, 50 ft. (15 m) D005-2112-050
Transducer Cable set, 100 ft. (30 m) D005-2112-100
Acoustic Grease, temporary mount D002-2011-001
Mounting Track, 10" measuring scale D010-2102-010
Mounting Track, 16" measuring scale D010-2102-016
36 inch SS hose clamp D002-2007-001
Power converter, 115V U.S. D005-2502-001
Power converter, 230V European D005-2502-002
Power converter, 230V U.K. D005-2503-005
Power cord, 230V U.K. D005-2116-002
Power cord, 12V auto-style D005-2116-002
4-20 mA interconnect cable D005-2116-001
Battery D005-1201-001
Infrared serial adapter D005-2115-001
USB to DB-9 serial adapter D005-2116-004
DB-9 Data Logger interface cable D005-2116-003
ULTRALINK™ Software CD D005-0803-104
Manual, TFXP flow meter DTFXP O&M

Rev. 5/09 -1.8- TFXP

PART 1 - SPECIFICATIONS

TRANSMITTER

Power Requirements
Velocity Range

Inputs/Outputs

Standard Options

4-20 mA 800 Ohm max; 12-bit resolution, passive or active
Data Logger

Other Options

Rate Pulse MOSFET, 0.21 Ohms, 100 V max, 0 to 2,500 Hz max
Dual Relay 2 separate Form C relays, 200 VAC max at 0.5 A (resistive)
RS232C Data rate to 57.6k
RS485 Supports up to 119 drops
Heat Flow (RTD) Supports two 1000 Ohm RTDs, multiplexed, 12-bit resolution

Display

Units User configured

Rate Gal, liters, million gal, ft³, m³, acre-ft, oil barrels (42 gal), liquid barrels (31.5 gal), ft, m, lb, kg, BTU, MBTU,

Time Seconds, minutes, hours, days
Totalizer Gal, liters, million gal, ft³, m³, acre-ft, oil barrels (42 gal), liquid barrels (31.5 gal), lb, kg, BTU, MBTU, MMBTU, ton

Mode Forward, reverse, net, batch
Ambient Conditions
Enclosure NEMA 4X (IP-66) while open, NEMA 6 (IP-68) while closed, ABS with SS hardware
Size 14.00" H × 6.06" W × 10.56" D (355.6 mm H × 153.9 mm W × 268.2 mm D); 14.8 lbs (6.7 Kg)
Flow Rate 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

Flow Sensitivity 0.001 FPS (0.0003 MPS)
Repeatability ±0.01% of reading
Response Time (Flow)
Security Keypad lockout, user selected 4 digit access code
Approvals Ordinary areas
Software ULTRALINK™, compatible with Window

Internal 12 V lead-acid Gel Cell battery provides 24 hrs of continuous operation @ 20 °C. Charging: Wall mount
power converter. 115 or 230 VAC 50/60 Hz ±15% VA max; 12-15 VDC @ 2.5 VA max

-40

to

+40

FPS (-12 to +12 MPS)

All output modules are optically isolated from earth and system grounds.
One module and one data logger may be installed.

200k events in 30k pages, 16-bit, integral DB-9 RS232C connection, can be removed and installed without
disconnecting system power, data transfer rates to 57.6k

128 x 64 pixel graphics LCD, LED backlit. Two user selectable font sizes 0.35" (8.9 mm) or 0.2" (5 mm)
8 digit rate, 8 digit totalizer (resettable)

MMBTU, ton

-40

°F to +185 °F

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; 1/2" and 3/4" units, ±1% FS

0.3 to 30 seconds, user configured, to 100% of value, step change in flow

(-40

°C to

+85

°C), 0 to 95% relative humidity (non-condensing)

®

98/2000/XP/Vista®

TRANSDUCERS

Liquid Types Most non-aerated, clean liquids
Cable Length Up to 990 ft (300 meters); standard lengths 20, 50, 100 ft (6, 15, 30 meters)
Pipe Sizes DTTN / DTTH: 2 inch and larger

Environment NEMA 6
Pipe Surface

Temperature

Ambient Conditions
Housing Material DTTN / DTTC: CPVC, Ultem

Approvals Standard: None

DTTS / DTTC (small pipe): 1/2", 3/4", 1", 1-1/4", 1-1/2" (ANSI pipe, copper tube, tube)

-40

DTTN / DTTC:
DTTS:

-40

-40

DTTH:

-40

°F to +185 °F

DTTS: PVC, Ultem
DTTH: PTFE, Vespel

Optional - DTTN only: CSA Class I, Div 1, Groups C & D; requires intrinsically safe transducer kit with barrier

°F to +250 °F
°F to +185 °F
°F to +350 °F

(-40

°C to

®

, and nylon

®

, and nickel-plated brass

(-40

(-40

°C to

(-40

°C to +177 °C)

+85

°C)

®

, and nylon

°C to +121 °C)

+85

°C)

Rev. 5/09 -1.9- TFXP

PART 1 - TFXP TRANSMITTER CONNECTIONS

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.

When the TFXP is to be utilized for extended periods of time in one
location, the enclosure should be placed 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 TFXP system. If this is not possible, it is
recommended that the cable be exchanged for one that is of
proper 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. If
additional
are RG59 75

2. Place the TFXP transmitter in a location that is:

cable and connections are added, ensure that they

Ohm compatible.

• Where little vibration exists.

• Protected from corrosive fluids.

•

Within ambient temperature limits -40 to 185 °F (-40 to 85 °C).

•

Out of direct sunlight. Direct sunl ight may increase transmitter
temperature to above maximum limit and make viewing the
LCD difficult.

3. If the transmitter will be subjected to a wet environment, it is
recommended that the cover remain closed and the latches
secured after configuration is completed. The faceplate/keypad
of the TFXP is watertight, but avoid letting water collect on the
keypad area.

Rev. 5/09 -1.10- TFXP

PART 1 - TFXP TRANSMITTER CONNECTIONS

Electrical
Connections

It is highly recommended that the internal battery in the TFXP be
fully charged before using the meter for the first time. Details
covering this procedure are located on page 1.1 of this manual.

1. The connectors located on the side of the TFXP cons ist of three
1/4-turn BNC-type and one 5.5 mm power plug. These
connectors are environmentally sealed, but it is recommended
not to allow water or other liquids to collect in the electrical
connections pocket.

2. Connect the appropriate wires to the corresponding connections
on the transmitter. The transducer cable has markings of
UPSTREAM and DOWNSTREAM to assist in the installation
process. The UPSTREAM transducer is the one located closer
to the direction from which fluid flow normally comes from. (The
fluid normally passes the UPSTREAM transducer before passing
the DOWNSTREAM transducer.) If the transducer wires are
connected backwards, a negative flow indication will be
observed on the flow meter display. See Figure 1.5 or the wiring
diagram located on the inner door of the transmitter.

Figure 1.5 — Transmitter Connections

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. If
additional
are RG59 75

Rev. 5/09 -1.11- TFXP

cable and connections are added, ensure that they

Ohm compatible.

PART 1 - TFXP TRANSMITTER CONNECTIONS

Battery
Charging and
External
Power
Sources

The 12 volt DC power converter and 12 volt auto-style power cord
connect to the socket connection located on the side of the
enclosure. See Figure 1.5 on page 1.11. A fully charged battery
will provide up to 24 hours of continuous operation before
recharging will be necessary. When the battery level has decreased
to a point where recharging is required, the LOW BATTERY
indicator will brightly illuminate on the front panel. At that point, the
meter will only operate a short time more until it automatically turns
itself off – preventing excessive battery discharge that can damage
the Gel Cell battery.

NOTE: When the battery is fully charged the LOW BATTERY
indicator may have a very dim glow.

If the TFXP is to be used for extended periods of operation, the
12

VDC line power converter or the 12 V auto-style converter can

remain connected indefinitely.
To charge the internal Gel Cell battery, apply power, utilizing the

enclosed 12 VDC line power converter or auto-style power cord, to
the TFXP for a period of 16-24 hours. The TFXP has an integral
charging circuit that prevents overcharging. The instrument can be
permanently connected to AC line power without damaging the flow
meter or the battery.

The Gel Cell battery is “maintenance free”, but it still requires a
certain amount of attention to prolong its useful life. To obtain the
greatest capacity and longevity from the battery, the following
practices are recommended:

• Do not allow the battery to completely discharge. (Discharging
the battery to the point where the LOW BATTERY indicator
illuminates will not damage the battery. Allowing the battery to
remain discharged for long periods of time can degrade the
storage capacity of the battery.) When not in use, continually
charge the battery by keeping the 12 VDC line power converter
plugged in and connected to the flow meter. The TFXP battery
management circuitry will not allow the battery to become
“overcharged”.

Rev. 5/09 -1.12- TFXP

PART 1 - TFXP TRANSMITTER CONNECTIONS

NOTE: The TFXP will automatically enter a low power consumption
mode approximately 1-1/2 minutes after the LOW BATTERY
indicator illuminates. This circuit prevents excessive discharge of
the internal battery.

• If the TFXP is stored for prolonged periods of time, monthly
charging is recommended.

• If the TFXP is stored for prolonged periods of time, store at a
temperature below 70 ºF (21 ºC).

Use wiring practices that conform to local codes (National Electric
Code® Handbook in the USA). Use only the power converters that
have been supplied with the TFXP flow meter. The ground terminal,
if present on the converter, 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 TFXP can be operated from a 11-15 VDC source, using the
included auto-style power cord, as long as it is capable of supplying
at least 3 watts – observe proper polarity.

General
Information
Regarding
Input/Output:
ISO-MODs

The TFXP flow meter may contain two Isolated Input/Output
Modules (ISO-MODs); one located inside of the flow meter

enclosure and one for the optional data logger, located under the
access door on the keyboard. The standard configuration of these
modules
powered 4­a data logger.

ISO-MODs are epoxy encapsulated electronic input/output modules
that are simple to install and replace in the field. All modules are
2,500 volt optically isolated from TFXP power and earth grounds –
eliminating the potential for ground loops and reducing the chance
of severe damage in the event of an electrical surge.

is to have the internal module configured as an actively

20 mA module and the optional user accessible one as

Rev. 5/09 -1.13- TFXP

PART 1 - TFXP TRANSMITTER CONNECTIONS

Standard

4-20 mA
Output

The standard 4-20 mA output may be replaced with one of the
following five ISO-MODs: dual-relay, rate pulse, RS232C, RS485
and heat flow (RTD). TFXP supports one ISO-MOD input/output
module in addition to the optional data logger. All modules are field
configurable by utilizing the keyboard or ULTRALINK™ interface.
Field wiring connections to ISO-MODs are quick and easy using
pluggable terminals.

The 4-20 mA Output Module interfaces with virtually all recording
and logging systems by transmitting an analog current signal that is
proportional to system flow rate. Independent 4 mA and 20 mA
span settings are established in software using the FL4MA and
FL

20MA settings in the OUTPUT2 configuration menu. These
entries can be set anywhere in the -40 to +40 fps (-12 to +12 mps)
measuring range of the instrument. Output resolution of the module
is 12-bits (4,096 discrete points). The module can drive up to 800
Ohms of load with its internally generated 24 volt power source.

A 4-20 mA output interface cable has been included with the TFXP
package. Connect the 1/4-turn BNC connection to the jack located
on the side of the flow meter. See Figure 1.6. The red clip on the
cable provides the positive leg of the output and the black clip
provides the negative side. Verify that the sum of the resistances in
the loop does not exceed 800 Ohms. The TFXP output is configured
to source current.

Figure 1.6 — 4-20 mA Output Connections

Refer to Part 3 of this manual for detailed information regarding the
configuration, calibration and testing of the 4-20 mA output.

Rev. 5/09 -1.14- TFXP

PART 1 - TFXP TRANSMITTER CONNECTIONS

Optional

Data Logger

A 200,000-point Data Logger* is located within the weather-tight
pocket on the faceplate of the flow meter. See Figure 1.7. Loosen
the three thumbscrews located in the corners of the pocket cover
and rotate the cover to expose the Data Logger Module. The
logger
selected intervals ranging from 1 to 30,000 (8.33 hours) seconds.
Configuration of and data retrieval from the logger can be
accomplished in one of two ways:

• The module is removable. The

• The Data Logger software utility,

stores time-stamped, high resolution (16-bit) data at user

module can be carried in a shirt
pocket back to the office and plugged
into a PC serial port via the module’s
integral DB-9 connector.

Data Logger, and the serial DB-9
interface cable included with the
logger can be used to access the
data. The data logging software is
loaded at the same time that
ULTRALINK™ is installed. Connect
the cable to the logger, which is
located in the pocket on the front
faceplate of the instrument. See Figure 1.7.

Figure 1.7 —

Data Logger Location

Refer to Part 3 of this manual for detailed information regarding the
configuration and operation of the Data Logger Module.

*The 200,000 points can be divided into 16 unique files that
each may contain up to 30,000 events.

Other

Optional

ISO-Mods

Rev. 5/09 -1.15- TFXP

There are five additional optional ISO-Mods available in
replacement of the standard 4-20mA output. If interested in one of
these optional ISO-Mods, please contact Dynasonics sales at
800-535-3569 or 262-639-6770 for detailed information.

PART 1 - INTRODUCTION

NOTES

Rev. 5/09 -1.16- TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

General

The transducers that are utilized by the TFXP contain piezoelectric
crystals for transmitting and receiving ultrasonic signals through
walls of liquid piping systems. 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. Extra care should be taken to ensure that these
instructions are carefully executed. DTTS and DTTC, small pipe
transducers, have integrated transmitter and receiver elements that
eliminate the requirement for spacing measurement and alignment.

Mounting of the DTTN/DTTH clamp-on ultrasonic transit time
transducers is comprised of three steps:

1. Selection of the optimum location on a piping system.

2. Entering the pipe and liquid parameters into either the

(ULTRALINK™) software utility or keying the parameters into
the TFXP keypad. The ULTRALINK™ software utility or the
TFXP firmware will calculate proper transducer spacing based
on these entries.

3. Pipe preparation and transducer mounting.
TFXP transmitters with an RTD ISO-MOD module installed require

either one or two RTDs to measure heat flow (one RTD) or heat
usage (two RTDs). The Dynasonics flow meter utilizes 1,000 Ohm,
three-wire, platinum RTDs in two mounting styles. Surface mount
RTDs are available for use on well insulated pipe. If the area where
the RTD will be located is not insulated, inconsistent temperature
readings will result and insertion (wetted) RTDs should be utilized.
Instructions for the installation of the RTDs begin on page 2.18.

Rev. 5/09 - 2.1 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

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 is defined as:

• A piping system that is completely full of liquid when

measurements are being taken. The pipe may become
completely empty during a process cycle – which will result in
the error code 0010 (Low Signal Strength) being displayed on
the flow meter while the pipe is empty. Error codes will clear
automatically once the pipe refills with liquid. It is not
recommended to mount the transducers in an area where the
pipe may become partially filled. Partially filled pipes will cause
erroneous and unpredictable operation of the meter.

• A piping system that contains lengths of straight pipe such

as those described in Table 2.1 on page 2.3. The optimum
straight pipe diameter recommendations apply to pipes in both
horizontal and vertical orientation. The straight runs in Table 2.1
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.

• Mount the transducers in an area where they will not be

inadvertently bumped or disturbed during normal operation.

• Avoid installations on downward flowing pipes unless

adequate downstream head pressure is present to overcome
partial filling of or cavitation in the pipe.

Rev. 5/09 - 2.2 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Table 2.1

1

The TFXP system will provide repeatable measurements on piping systems that do not meet these

requirements, but the accuracy

Rev. 5/09 - 2.3 - TFXP

1 —

Piping Configuration and Transducer Positioning

of these readings may be influenced to various degrees.

PART 2 - TRANSDUCER & RTD INSTALLATION

2. Transducer Spacing

TFX transit time flow meters are sold with four different transducer
types: DTTN, DTTH, DTTS and DTTC. Meters that utilize DTTN or
DTTH transducer sets consist of two separate sensors that function
as both ultrasonic transmitters and receivers. DTTS and DTTC
transducers integrate both the transmitter and receiver into one
assembly that fixes the separation of the piezoelectric crystals.
DTTN and DTTH transducers are clamped on the outside of a
closed pipe at a specific distance from each other.

The transducers can be

• W-Mount where the sound transverses the pipe four times.

This mounting method produces the best relative travel time
values but the weakest signal strength.

• V-Mount where the sound transverses 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.

For further details, reference Figure 2.1 located under Table 2.2 on
page 2.5. The appropriate mounting configuration is based on pipe
and liquid
mounting method
iterative process. Table 2.2 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 or poor piping conditions
are present. Use of the TFX diagnostics in determining the optimum
transducer mounting is covered later in this section.

characteristics. Selection of the proper transducer

is not entirely predictable and many times is an

mounted in:

Rev. 5/09 - 2.4 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Transducer

Mounting Mode

W-Mount

V-Mount

Z-Mount

Pipe Material Pipe Size Liquid Composition

Plastic (all types)
Carbon Steel
Stainless Steel
Copper
Ductile Iron
Cast Iron1

Plastic (all types)
Carbon Steel
Stainless Steel
Copper
Ductile Iron
Cast Iron

Plastic (all types)
Carbon Steel
Stainless Steel
Copper
Ductile Iron
Cast Iron

2-4 in (50-100 mm)
2-4 in (50-100 mm)
2-4 in (50-100 mm)
2-4 in (50-100 mm)
Not recommended
Not recommended

4-12 in (100-300 mm)
4-12 in (100-300 mm)
4-12 in (100-300 mm)
4-30 in (100-750 mm)
2-12 in (50-300 mm)
2-12 in (50-300 mm)

> 30 in (> 750 mm)
> 12 in (> 300 mm)
> 12 in (> 300 mm)
> 30 in (> 750 mm)
> 12 in (> 300 mm)
> 12 in (> 300 mm)

Low TSS; non-aerated

Low TSS; non-aerated

Low TSS; non-aerated

TSS = Total Suspended Solids

Table 2.2 — Transducer Mounting Modes - DTTN / DTTH

Figure 2.1 — Transducer Mounting Modes - DTTN / DTTH

Rev. 5/09 - 2.5 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Size Frequency Transducer

DTTSnP

1/2 2 MHz

3/4 2 MHz

2 MHz

1

NOTE: DTTS transducer designation refers to both DTTS and DTTC transducer types.

DTTSnC DTTSnC

DTTSnT DTTSnT
DTTSnP
DTTSnC DTTSnC

DTTSnT DTTSnT
DTTSnP
DTTSnC DTTSnC

DTTSnT 2 MHz DTTSnT

Mounting

Mode

W

W

W

Size Frequency Transducer

DTTSnP

1-1/4 2 MHz

1-1/2 2 MHz

1 MHz

2

DTTSnP

DTTSnP

Table 2.3 — Transducer Mounting Modes - DTTS / DTTC

Mounting

Mode

W

W

V

W

Entering Pipe
and Liquid
Data

The TFX system calculates proper transducer spacing by utilizing
piping and liquid information entered by the user. This information
can be entered via the keypad on a TFXP or via the optional
ULTRALINK™ software utility.

NOTE: Transducer spacing is calculated on “ideal” pipe. Ideal pipe
is almost never found so the transducer spacing distances should
be considered as starting points. An effective way to maximize
signal strength is to configure the display to show signal strength, fix
one transducer on the pipe and then starting at the calculated
spacing move the remaining transducer small distances forward and
back to find the maximum signal strength point.

Rev. 5/09 - 2.6 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Important!
Enter all of
the data on
this list, save
the data
and reset the
TFX before
mounting
transducers

The following information is required before programming the
instrument.

NOTE: Much of the data relating to material sound speed, viscosity
and specific gravity is preprogrammed into the TFX flow meter. This
data only needs to be modified if it is known that a particular liquid’s
data varies from the reference value. Refer to Part 3 of this manual
for instructions on entering configuration data into the TFX flow
meter via the meter keypad. Refer to Part 4 for data entry via
ULTRALINK™ software.

1. Transducer mounting configuration – see Table 2.2 on page

2.5 and Table 2.3 on page 2.6

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 (if present)

8. Pipe liner material (if present)

9. Fluid type

10. Fluid sound speed1

11. Fluid viscosity1

12. Fluid specific gravity1

1

Nominal values for these parameters are included within the TFX
operating system. The nominal values may be used as they
appear or may be modified if exact system values are known.

After entering the data listed above, the TFX will calculate proper
transducer spacing for the particular data set. This distance will be
in inches if the TFX is configured in English units, or millimeters if
configured in metric units.

Rev. 5/09 - 2.7 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

3. Transducer Mounting

After selecting an optimal mounting location (Step 1) and
successfully determining the proper transducer spacing (Step 2) the
transducers may now be mounted onto the pipe.

Pipe
Preparation

Before the transducers are mounted onto the pipe surface, an area
slightly larger than the flat surface of each transducer must be
cleaned of all rust, scale and moisture. For pipes with rough
surfaces, such as ductile iron pipe, it is recommended that the pipe
surface be ground flat. Paint and other coatings, if not flaked or
bubbled, need not be removed. Plastic pipes typically do not
require surface preparation other than soap and water cleaning.

The DTTN and DTTH transducers must be properly oriented and
spaced on the pipe to provide optimum reliability and performance.
On horizontal pipes, when Z-Mount is required, the transducers
should be mounted 180 radial degrees from one another and at
least 45 degrees from the top-dead-center and bottom-dead-center
of the pipe. See Figure 2.2. Also see Z-Mount Transducer
Installation on page 2.13. On vertical pipes the orientation is not
critical.

Figure 2.2 — Transducer Orientation - Horizontal Pipes

Rev. 5/09 - 2.8 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

The spacing between the transducers is measured between the two
spacing marks on the sides of the transducers. These marks are
approximately 3/4 inch back from the nose of the transducer. See
Figure 2.3.

DTTS and DTTC transducers should be mounted with the cable
exiting within
Figure 2.2 on page 2.8. On vertical pipes the orientation is not
critical.

±45 degrees

of the side of a horizontal pipe. See

V-Mount and
W-Mount
Transducer
Installation

Application of
Couplant

Figure 2.3 — Transducer Spacing Marks

V-Mount and W-Mount Installation

1. For DTTN transducers, place a single bead of couplant,
approximately 1/2 inch (12 mm) thick, on the flat face of the
transducer. See Figure 2.4. Generally, a silicone-based grease
is used as an acoustic couplant, but any grease-like substance
that is rated not to “flow” at the temperature that the pipe may
operate at will be acceptable.

Figure 2.4 — Application of Couplant

Rev. 5/09 - 2.9 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Transducer
Positioning

2. Place the upstream transducer in position and secure with a
mounting strap. Straps should be placed in the arched groove
on the end of the transducer. A screw is provided to help hold
the transducer onto the strap. Verify that the transducer is true
to the pipe — adjust as necessary. Tighten the transducer strap
securely.

3. Place the downstream transducer on the pipe at the calculated
transducer spacing. See Figure 2.5. Using firm hand pressure,
slowly move the transducer both towards and away from the
upstream transducer while observing signal strength. Signal
strength can be displayed on the TFX display or on the main
data screen in ULTRALINK™. See Part 4 of this manual for
details regarding the ULTRALINK™ software utility. Clamp the
transducer at the position where the highest signal strength is
observed. The factory default signal strength setting is 5
percent, however there are many application specific conditions
that may prevent the signal strength from attaining this level. If
after trying alternate transducer locations and/or mounting
modes the signal strength remains below 5 percent, then
reducing the Low Signal Cutoff setting may be necessary. A
minimum signal strength of 2 percent is acceptable as long as
the 2 percent signal is maintained under all conditions.

(Top view of pipe)

Figure 2.5 — Transducer Positioning

Rev. 5/09 - 2.10 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

4.

If after adjustment of the transducers the signal strength does
not rise to above 5 percent, then an alternate transducer
mounting method should be selected. If the mounting method
was W­TFX, move the downstream transducer to the new location and
repeat Step 3 on page 2.10.

5. Certain pipe and liquid characteristics may cause sign al strength
to rise to greater than 195 percent. The problem with operating a
TFX with very high signal strength is that the signals may
saturate the input amplifiers and cause erratic readings. To
decrease the signal strength, move one transducer a small
distance radially around the pipe, as shown in Figure 2.6.

Mount, then reconfigure the TFX for V-Mount, reset the

Figure 2.6 — High Signal Strength Correction

Rev. 5/09 - 2.11 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

DTTH
Transducers
for High
Temperature

DTTS/DTTC
Small Pipe
Transducer
Installation

DTTH High Temperature Transducers

Mounting of high temperature transducers is similar to standard
DTTN transducers. High temperature installations require acoustic
couplant that is rated not to “flow” at the temperature that will be
present on the pipe surface.

Installation consists of the following steps:

1. Apply a thin coating of high temperature acoustic couplant to the
entire surface of the transducer face. The thickness of the
application should be approximately 1/16 inch (1.5 mm).

2. Install the two transducers following the procedures detailed in
the DTTN instructions on page 2.9 of this manual.

DTTS/DTTC Small Pipe Transducer Installation

The small pipe transducers are designed for specific pipe outside
diameters. Do not attempt to mount a DTTS or DTTC transducer
onto a pipe that is either too large or too small for the transducer.
Contact the Dynasonics factory to arrange for a replacement
transducer that is the correct size.

DTTS and DTTC installations consist of the following steps:

1. Apply a thin coating of silicone grease to both halves of the
transducer housing where the housing will contact the pipe. See

Figure 2.8.

Figure 2.8 — Application of Grease

DTTS and DTTC Transducers

Rev. 5/09 - 2.12 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

2. On horizontal pipes, mount the transducer in an orientation so
that the cable exits at
mount with the cable exiting on either the top or bottom of the
pipe. On vertical pipes the orientation is not critical. See Figure

2.2 on page 2.8.

3. Tighten the wing nuts or “U” bolts so that the grease begins to
flow out from the edges of the transducer and from the gap
between the transducer halves. Do not over tighten.

4. If signal strength is less than 5 percent, remount the transducer
at another location on the piping system.

5. If signal strength is greater than 195 percent, contact
Dynasonics for adjustments to the AGC (Automatic Gain)
settings.

±45°

from the side of the pipe. Do not

Z-Mount
Transducer
Installation

Mounting Transducers in Z-Mount Configuration

Installation on larger pipes requires careful measurements of the
linear and radial placement of the DTTN and DTTH transducers.
Failure to properly orient and place the transducers on the pipe may
lead to weak signal strength and/or inaccurate readings. This
section details a method for properly locating the transducers o n lar ger
pipes. This method requires a roll of paper such as freezer paper or
wrapping paper, masking tape and a marking device.

1. Wrap the paper around the pipe in the manner shown in Figure

2.9. Align the paper ends to within 1/4 inch (6 mm).

Figure 2.9 — Paper Template Alignment

2. Mark the intersection of the two ends of the paper to indicate the
circumference. Remove the template and spread it out on a flat
surface. Fold the template in half, bisecting the circumference.
See Figure 2.10 on page 2.14.

Rev. 5/09 - 2.13 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Figure 2.10 — Bisecting the Pipe Circumference

3.

Crease the paper at the fold line. Mark the crease. Place a mark
on the pipe where one of the transducers will be located. See
Figure 2.2 on page 2.8 for acceptable radial orientations. Wrap
the template back around the pipe, placing the beginning of the
paper and one corner in the location of the mark. Move to the
other side of the pipe and mark the pipe at the ends of the
crease. Measure from the end of the crease (directly across the
pipe from the first transducer location) the dimension derived in
Step 2, Transducer Spacing. Mark this location on the pipe.

4. The two marks on the pipe are now properly aligned and
measured.

If access to the bottom of the pipe prohibits the wrapping of the
paper around the circumference, cut a piece of paper 1/2 the
circumference of the pipe and lay it over the top of the pipe.

1/2 Circumference = Pipe O.D. × 1.57

The transducer spacing is the same as found in the
Transducer Positioning section on page 2.10.

Mark opposite corners of the paper on the pipe. Apply
transducers to these two marks.

Rev. 5/09 - 2.14 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

5. For DTTN transducers, place a single bead of couplant,
approximately 1/2 inch (12 mm) thick, on the flat face of the
transducer. See Figure 2.4 on page 2.9. Generally, a silicone­based grease is used as an acoustic couplant, but any grease­like substance that is rated to not “flow” at the temperature that
the pipe may operate at will be acceptable.

6. Place the upstream transducer in position and secure with a
stainless steel strap or other. Straps should be placed in the
arched groove on the end of the transducer. A screw is provided to
help hold the transducer onto the strap. Verify that the
transdu cer is true to the pipe — adjust as necessary. Tighten
the transducer strap securely. Larger pipes may require more
than one strap to reach the circumference of the pipe.

7. Place the downstream transducer on the pipe at the calculated
transducer spacing. See Figure 2.11 on page 2.16. Using firm
hand pressure, slowly move the transducer both towards and
away from the upstream transducer while observing signal
strength. Clamp the transducer at the position where the highest
signal strength is observed. Signal strength of between 5 and
195 percent is acceptable. The factory default signal strength
setting is 5 percent, however there are many application specific
conditions that may prevent the signal strength from attaining
this level. If after trying alternate transducer locations and/or
mounting modes the signal strength remains below 5 percent,
then reducing the Low Signal Cutoff setting may be necessary.
A minimum signal strength of 2 percent is acceptable as long as
the 2 percent signal is maintained under all flow conditions.

On certain pipes, a slight twist to the transducer may cause
signal strength to rise to acceptable levels.

8. Certain pipe and liquid characteristics may cause sign al strength
to rise to greater than 195 percent. The problem wit h operating a
TFX with very high signal strength is that the signals may
saturate the input amplifiers and cause erratic readings. To
decrease the signal strength, one transducer can be offset
rad ial ly, as illustrated in Figure 2.6 on page 2.11, or a V-Mount
transducer mounting method may be chosen.

9. Secure the transducer with a stainless steel strap or other
fastener.

Rev. 5/09 - 2.15 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Figure 2.11 — Z-Mount Transducer Placement

Mounting
Track
Installation

D010-2102-010 Mounting Track Installation

1. The D010-2102-010 transducer mounting track is used for

pipes that have outside diameters between 2 and 10 inches
(50-250 mm). If the pipe is outside of that range, select a
standard V-Mount or Z-Mount mounting method.

2. Install the single mounting rail on the side of the pipe with the

stainless steel bands provided. Do not mount it on the top or
bottom of the pipe. Orientation on vertical pipe is not critical.
Ensure that the track is parallel to the pipe and that all four
mounting feet are touching the pipe.

3. Slide the two transducer clam p brackets towards the center,

5 inch (125 mm) mark on the mounting rail.

4.

Place a single bead of couplant, approximately 1/2 inch
(12 mm) thick, on the flat face of the transducer. See Figure 2.4
on page 2.9.

5. Place the first transducer in between the mounting rails near

the zero point on the scale. Slide the clamp over the transducer .
Adjust the clamp/transducer so that the notch in the clamp
aligns with zero on the scale. See Figure 2.12 on page 2.17.

Rev. 5/09 - 2.16 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Figure 2.12 — D010-2102-010 Mounting Track Installation

6. Secure with the thumb screw. Ensure that the screw rests in

the counter bore on the top of the transducer. (Excessive
pressure is not required. Apply just enough pressure so that
the couplant fills the gap between the pipe and transducer.)

7. Place the second transducer in between the mounting rails

near the dimension derived in the Transducer Spacing section.
Read the dimension on the mounting rail scale. Slide the
transducer clamp over the transducer and secure with the
thumb screw.

Rev. 5/09 - 2.17 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

4. RTD INSTALLATION

For typical installations, the length of RTD wire should equal the
length of the flow transducer cable. Ensure that the length of wire
included with the RTDs is adequate to reach from the supply and
return pipes to the location of the TFX transmitter. If the length of
wire is insufficient, wire can be added on but a small temperature
offset will result. If additional RTD wire is added, utilize Belden
9939 or equivalent cable and provide proper connections to the
shield wires – maintain the color coding.

Surface
Mount RTD
Installation

Surface Mount RTD Installation

Surface mount RTDs should only be utilized on well insulated pipe.
If the area where the RTD is located is not insulated, inconsistent
temperature readings will result and insertion (wetted) RTDs should
be utilized.

1. Select areas on the supply and return pipes where the RTDs

will be mounted and peel back the insulation all the way
around the pipe in the installation area.

2. Clean an area on the pipe slightly larger than the RTD down

to bare metal.

3. Place a small amount of heat sink compound on the pipe in

the RTD installation location. See Figure 2.13 on page 2.19.

4. Press the RTD firmly into the compound. Fasten the RTD to

the pipe with the included stretch tape.

5. Route the RTD cables back to the TFX flow meter. If the

cables are not long enough to reach the TFX, route the
cables to an electrical junction box and add additional cable
from that point. Use 3-wire shielded cable, such as Belden
9939 or equal, for this purpose.

6. Secure the RTD cable so that it will not be pulled on or

inadvertently abraded.

7. Replace the insulation on the pipe, ensuring that the RTD is

not exposed to air currents.

Rev. 5/09 - 2.18 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Figure 2.13 — Surface Mount RTD Installation

Insertion RTD
Installation

Insertion RTD Installation

Insertion RTDs are typically installed through 1/4" compression
fittings and isolation ball valves.

1. It is recommended that insertion RTDs be mounted

downstream of the flow measurement transducers to avoid
causing flow instability in the flow measurement region.

2. Insert the RTD into the flow stream so that a minimum of

0.25" of the probe tip extends into the pipe. See Figure 2.14
on page 2.20.

3. RTDs should be mounted within ±45 degrees of the side of a

horizontal pipe. See Figure 2.15 on page 2.20. On vertical
pipes the orientation is not critical.

4. Route the RTD cables back to the TFX flow meter. If the

cables are not long enough to reach the TFX, route the
cables to an electrical junction box and add additional cable
from that point. Use 3-wire shielded cable, such as Belden
9939 or equal, for this purpose.

5. Secure the RTD cable so that it will not be pulled on or

inadvertently abraded.

Rev. 5/09 - 2.19 - TFXP

PART 2 - TRANSDUCER & RTD INSTALLATION

Figure 2.14 — Insertion RTD Installation

Figure 2.15 — Insertion RTD Orientation - Horizontal Pipes

Rev. 5/09 - 2.20 - TFXP

PART 3 - STARTUP AND CONFIGURATION

Before
Starting the
Instrument

Instrument
Startup

NOTE: The TFX flow meter system requires a full pipe of liquid
before a successful startup can be completed. Do not attempt to
make adjustments or change configurations until a full pipe is
verified.

NOTE: If Sonotemp® silicone grease was utilized as a couplant, a
curing time is not required. However, if Dow 732 or another
permanent RTV was used, the adhesive must fully cure before
power is applied to the instrument.

Procedure:

1. Verify that all wiring is properly connected and routed as
described previously in this manual.

2. Verify that the transducers are properly mounted as described in
Part 2 of this manual.

3. Press the ON button to the right of the keypad. The TFX display
backlighting will illuminate along with the “On” LED and the
software version number will appear on the display.

The display backlighting illuminates for approximately 30 seconds
and automatically turns off to preserve battery power. To re­illuminate the display, press any key on the keyboard.
Adjustments to the backlighting duration can be made in the
Display Menu. Refer to page 3.40 for details.

4. Confirm that Signal Strength is greater than 5%. If it is not, verify
that proper transducer mounting methods and liquid/pipe
characteristics have been entered. The pipe must be full of
liquid in order to make this measurement.

5. Once the meter is properly operating (proper signal strength has
been achieved), refer to the later portions of this manual section
for additional programming features.

Rev. 5/09 -3.1- TFXP

PART 3 - KEYPAD CONFIGURATION

General

Keypad
Operation

After installation of the transducers and connection of appropriate
cabling to the TFX, keypad configuration of the instrument can be
performed. All entries are saved in non-volatile FLASH memory and
will be retained in the event of power loss.

The TFX can be configured through the keypad interface or by using
the ULTRALINK™ Windows® compatible software utility. (See Part
4 of this manual for software details.) Of the two configuration
methods, the ULTRALINK™ software utility provides more
advanced features and offers the ability to store and transfer meter
configurations between TFX meters.

The keypad consists of the following:

On key with LED indicator for turning the TFX on —
Off key for turning the TFX off.

Two “Soft Keys” that change function depending on the operation
being performed.

Up ˄ arrow key for scrolling up a list or incrementing a numeric
entry.

Down ˅ arrow key for scrolling down a list or decrementing a
numeric entry.

Up/Down arrow keys are also used to adjust the display contrast
in Run Mode.

Numeric keys for entering numeric values.

Figure 3.1 —

Graphics Display

and Keypad

Rev. 5/09 -3.2- TFXP

PART 3 - KEYPAD CONFIGURATION

“Soft Key” menu items will be displayed immediately above the two
keys located in the lower corners of the graphics display. See
Figure 3.1 on page 3.2.

Soft key functions can be any of the following:

The MENU soft key places the meter into Programming mode
from Run mode.

The ACK soft key is used to Acknowledge a condition that
requires user intervention.

The ACCEPT soft key is used to Accept configuration
parameter changes.

The CANCEL soft key returns the user to the next highest menu
level without making any changes.

The EDIT soft key allows users to make changes to the current
menu items.

The EXIT soft key is used to return to the next highest menu
level.

Graphics
Display
Configuration

The SELECT soft key is used in conjunction with the arrow keys
to choose the parameters to be displayed on the graphics
display.

Each display line is independently configurable to show any of the
following menu items:

Rate (Forward Only)
Total (Net Only)
Sound Speed FPS
Sound Speed MPS
SIGNAL STR (Signal Strength)
Temp 1 (Heat Flow Option Required)
Temp 2 (Heat Flow Option Required)
Temp DIFF (Heat Flow Option Required)

The TFXP display can be set up to show 2 lines with large numerals
(17 pixels high) or 4 lines with small numerals (9 pixels high). The
number of display lines can be toggled between 2 and 4 using the
commands in the Display Menu (Menu # 8). Refer to page 3.39 for
details.

Rev. 5/09 -3.3- TFXP

PART 3 - KEYPAD CONFIGURATION

Figure 3.2 — 2 Line vs 4 Line Display

In the RUN mode pressing the SELECT soft key highlights one of
the display lines. Successively pressing the SELECT soft key cycles
through all of the display lines. Use the UP/DOWN arrow keys to
select desired parameter. When the correct choice is shown, press
the SELECT soft key once again to lock in the choice.

If changes to any configuration parameters have been made, the
user will be prompted with a SAVE? YES when returning to RUN
mode.

Display
Contrast

Menu
Structure

Rev. 5/09 -3.4- TFXP

The UP/DOWN arrow keys are also used to adjust the display
contrast level. In RUN mode pressing the up arrow key increases
the contrast and pressing the down arrow decreases the contrast.

The eight menus used in the structure of the TFXP are as follows:

1. Basic Menu – The Basic operations menu contains all of the
configuration parameters necessary to program the meter to
measure flow.

2. Datalog Operation – Datalog Operation configures the data
logging location, logger interval and logging duration.

3. Datalog Maintenance – Datalog Maintenance allows data
logger files to be erased from the logger.

4. Output 2 Menu – Output 2 menu configures the type and
operating parameters of the 4-20 mA or other ISO-MOD located
internally in the TFXP flow meter.

Units
Selection

PART 3 - KEYPAD CONFIGURATION

5. Sensor Menu – The Sensor menu is used to select the sensor
type (i.e. DTTN, DTTH, etc.)

6. Security Menu – The Security menu is utilized for resetting
totalizers, resetting the operating system and revising security
passwords.

7. Service Menu – The Service menu contains system settings
that are used by service personnel for troubleshooting.

8. Display Menu – The Display menu is used to configure meter
display functions.

The following sections define the configuration parameters located
in each of the menus.

1. BSC MENU -- BASIC MENU

The BASIC Menu contains all of the configuration parameters
necessary to make the TFX operational.

UNITS (Choice)

1. Englsh

2. Metric

Installs a global measurement standard into the memory of the
instrument. The choices are either English or Metric units.

• 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 TFX

to display sound speeds in pipe materials and liquids as
either feet per second or meters per second, respectively.

IMPORTANT!

Rev. 5/09 -3.5- TFXP

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 TFX 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.

PART 3 - KEYPAD CONFIGURATION

Transducer
Mounting
Method

Pipe
Diameter

Pipe Wall
Thickness

XDCR MNT -- Transducer Mounting Method (Choice)

1. V

2. W

3. Z

Selects the mounting orientation for the transducers. The selection
of an appropriate mounting orientation is based on pipe and liquid
characteristics. See Part 2 – Transducer & RTD Installation in this
manual.

PIPE OD -- Pipe Outside Diameter Entry (Value)

1. ENGLSH (Inches)

2. 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 (Value)

1. ENGLSH (Inches)

2. METRIC (Millimeters)

Enter the pipe wall thickness in inches if Englsh was selected as
Units; in millimeters if Metric was selected.

Pipe
Material

Rev. 5/09 -3.6- TFXP

PIPE MAT -- Pipe Material Selection (Choice)

1. Acrylic (ACRYLIC)

2. Aluminum (ALUMINUM)

3. Brass [Naval] (BRASS)

4. Carbon Steel (CARB ST)

5. Cast Iron (CAST IRN)

6. Copper (COPPER)

7. Ductile Iron (DCTL IRN)

8. Fiberglass-Epoxy (FBRGLASS)

9. Glass Pyrex (PYREX)

10. Nylon (NYLON)

11. HD Polyethylene (HDPE)

12. LD Polyethylene (LDPE)

13. Polypropylene (POLYPRO)

14. PVC CPVC (PVC/CPVC)

15. PVDF (PVDF)

PART 3 - KEYPAD CONFIGURATION

16. St Steel 302/303 (SS 303)

17. St Steel 304/316 (SS 316)

18. St Steel 410 (SS 410)

19. St Steel 430 (SS 430)

20. PFR (PFR)

21. Titanium (TITAMN)

22. Other (OTHER)

This list is provided as an example. Additional pipe materials may
have been added. Select the appropriate pipe material from the list
or select Other if the material is not listed.

Pipe
Sound Speed

PIPE SS -- Speed of Sound in the Pipe Material (Value)

1. ENGLSH (Feet per Second)

2. METRIC (Meters per Second)

Allows adjustments to be made to the speed of sound in the pipe
wall. If the Units value was set to Englsh, the entry is in FPS (feet
per second). Metric entries are made in MPS (meters per second).

If a pipe material was chosen from the Pipe Mat list, a nominal
value for speed of sound in that material will be automatically
loaded. If the actual sound speed rate is known for the application
piping system and that value varies from the automatically loaded
value, the value can be revised.

Linear RMS measurement, pipe internal wall surface

PIPE R

If Other was chosen as Pipe Mat, a Pipe SS will need to be
entered.

=

Internal Diameter of the pipe

Pipe
Roughness

Rev. 5/09 -3.7- TFXP

PIPE R -- Pipe Material Relative Roughness (Value)

Unitless

The TFX 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 algorithm.

PART 3 - KEYPAD CONFIGURATION

If a pipe material was chosen from the Pipe Mat list, a nominal
value for 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 must also be entered.

Liner
Thickness

Liner
Material

LINER T -- Pipe Liner Thickness Entry (Value)

1. ENGLSH (Inches)

2. METRIC (Millimeters)

If the pipe uses a liner, enter the pipe liner thickness. Enter this
value in inches if Englsh was selected as Units; in millimeters if
Metric was selected.

If a Liner thickness was entered a liner material must then also be
chosen along with the liner materials sound speed.

[If a LINER Thickness was selected]
LINER MAT -- Liner Material (Choice)

1. Ebonite (EBONITE)

2. Mortar (MORTAR)

3. HD Polyethylene (HDPE)

4. LD Polyethylene (LDPE)

5. Polypropylene (POLYPRO)

6. Polystyrene (POLYSTY)

7. Rubber (RUBBER)

8. Tar Epoxy (TAR EPXY)

9. Teflon (TEFLON)

10. Other (OTHER)

This list is provided as an example. Additional materials may have
been added. Select the appropriate material from the list or select
Other if the liner material is not listed.

If Other was chosen as Liner Mat, a Liner SS must also be
entered.

Rev. 5/09 -3.8- TFXP

PART 3 - KEYPAD CONFIGURATION

Liner
Sound Speed

Fluid
Type

LINER SS -- Speed of Sound in the Liner (Value)

1. ENGLSH (Feet per Second)

2. 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 (Choice)

1. Water Tap (WATER)

2. Sewage (SEWAGE)

3. Acetone (ACETONE)

4. Alcohol (ALCOHOL)

5. Ammonia (AMMONIA)

6. Benzene (BENZENE)

7. Brine (BRINE)

8. Ethanol (EHTANOL)

9. Ethylene Glycol (ETH-GLYC)

10. Gasoline (GASOLINE)

11. Glycerin (GLYCERIN)

12. Isopropyl Alcohol (ISO-ALC)

13. Kerosene (KEROSENE)

14. Methanol (METHANOL)

15. Oil Diesel (DIESEL)

16. Oil Hydraulic (HYD OIL)
[Petro-based]

17. Oil Lubricating (LUBE OIL)

18. Oil Motor (MTR OIL)
[SAE 20/30]

19. Water Distilled (WATR-DST)

20. Water Sea (WATR-SEA)

21. Other (OTHER)

This list is provided as an example. Additional fluid types may have
been added. Select the appropriate liquid from the l
Other if the liquid is not listed.

ist or select

Rev. 5/09 -3.9- TFXP

PART 3 - KEYPAD CONFIGURATION

Fluid
Sound Speed

FLUID SS -- Speed of Sound in the Fluid (Value)

1. ENGLSH (Feet per Second)

2. 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 is known for the application fluid and that value
varies from the automatically loaded value, the value can be
revised.

If Other was chosen as Fl Type, a Fluid SS will need to be entered.
A list of alternate fluids and their associated sound speeds is
located in the Appendix of this manual.

Fluid sound speed may also be found using the Target DBg Data
screen available in the ULTRALINK™ software utility.

Fluid
Viscosity

Fluid
Specific
Gravity

FLUID VI -- Absolute Viscosity the Fluid (Value in cP)

cP

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 it 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 of this manual.

SP GRVTY -- Fluid Specific Gravity Entry (Value)

Unitless

Allows adjustments to be made to the specific gravity (density) of
the liquid.

Rev. 5/09 -3.10- TFXP

PART 3 - KEYPAD CONFIGURATION

If a fluid was chosen from the Fl Type list, a nominal value for
specific gravity in that media will be automatically loaded. If the
actual specific gravity is known for the application fluid and that
value varies from the automatically loaded value, the value can be
revised.

If Other was chosen as Fl Type, a Sp Grvty may need to be
entered if mass flows are to be calculated. A list of alternate fluids
and their associated specific gravities are located in the Appendix
of this manual.

Fluid Specific
Heat Capacity

SP HEAT -- Fluid Specific Heat Capacity (Value)

(only visible when RTD Module is activated)

Nominal Heat Capacity

Allows adjustments to be made to the specific heat capacity of the
liquid.

If a fluid was chosen from the Fl Type list, a default specific heat will
be automatically loaded. This default value is displayed as Sp Heat
in the Basic Menu. If the actual specific heat of the liquid is known
or it differs from the default value, the value can be revised. See
Tables 3.1, 3.2, 3.3 and 3.4 on pages 3.11 and 3.12 for specific
values. Enter a value that is the mean of both pipes.

Temperature °F Temperature °C Specific Heat BTU/lb °F

32-212 0-100 1.00

250 121 1.02
300 149 1.03
350 177 1.05

Table 3.1 — Specific Heat Capacity Values for Water

Rev. 5/09 -3.11- TFXP

PART 3 - KEYPAD CONFIGURATION

Temperature Ethylene Glycol Solution (% by Volume)

°F °C 25 30 40 50 60 65 100

-40 -40 n/a n/a n/a n/a 0.68 0.70 n/a
0 -17.8 n/a n/a 0.83 0.78 0.72 0.70 0.54

40 4.4 0.91 0.89 0.845 0.80 0.75 0.72 0.56
80 26.7 0.92 0.90 0.86 0.82 0.77 0.74 0.59

120 84.9 0.93 0.92 0.88 0.83 0.79 0.77 0.61
160 71.1 0.94 0.93 0.89 0.85 0.81 0.79 0.64
200 93.3 0.95 0.94 0.91 0.87 0.83 0.81 0.66
240 115.6 n/a n/a n/a n/a n/a 0.83 0.69

Specific Heat Capacity BTU/lb °F

Table 3.2 — Specific Heat Capacity Values

for Ethylene Glycol/Water

Polypropylene Glycol Solution (% by Volume)

0 10 20 30 40 50 60

1.00 0.98 0.96 0.94 0.90 0.85 0.81

Specific Heat Capacity BTU/lb °F

Table 3.3 — Specific Heat Capacity Values

for Propylene Glycol/Water

Fluid

Alcohol, ethyl 32 0 0.65

Alcohol, methyl 54 12 0.60

Brine 32 0 0.71
Brine 60 15 0.72

Sea Water 63 17 0.94

Temperature

°F

Temperature

°C

Specific Heat BTU/lb °F

Table 3.4 — Specific Heat Capacity Values

for Other Common Fluids

Rev. 5/09 -3.12- TFXP

PART 3 - KEYPAD CONFIGURATION

Transducer
Spacing

XDCR SPAC -- Transducer Spacing Calculation (Value)

1. ENGLSH (Inches)

2. 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 alignment marks which are
scribed into the sides of the transducer blocks. See Figure 3.3.

Figure 3.3 —

Transducer

Alignment Marks

If the transducers are being mounted using a transducer track
assembly, a measuring scale is etched into the track. Using the
alignment marks, place one transducer at 0 and the other at the
appropriate measurement.

Figure 3.3 — Mounting Track Spacing

Engineering
Units
RATE

Rev. 5/09 -3.13- TFXP

RATE UNT -- Engineering Units for Flow Rate (Choice)

1. Gallons (GALLONS)

2. Liters (LITERS)

3. Millions of Gallons (MGAL)

4. Cubic Feet (CUBIC FT)

5. Cubic Meters (CUBIC ME)

6. Acre Feet (ACRE FT)

7. Oil Barrels (OIL BARR)
[42 Gallons]

PART 3 - KEYPAD CONFIGURATION

8. Liquid Barrels (LIQ BARR)
[31.5 Gallons]

9. Feet (FEET)

10. Meters (METERS)

11. Pounds (LB)

12. Kilograms (KG)

13. British Thermal (BTU)
Units

14. Thousands of BTUs (MBTU)

15. Millions of BTUs (MMBTU)

16. Tons (TON)

Select a desired engineering unit for flow rate measurements.

Engineering
Units
RATE
INTERVAL

Engineering
Units
TOTALIZER

RATE INT -- Time Interval for Flow Rate (Choice)

1. Seconds (SEC)

2. Minutes (MIN)

3. Hour (HOUR)

4. Day (DAY)

Select a desired engineering unit for flow rate measurements.

TOTL UNT -- Engineering Units for Flow Totalizer (Choice)

1. Gallons (GALLONS)

2. Liters (LITERS)

3. Millions of Gallons (MGAL)

4. Cubic Feet (CUBIC FT)

5. Cubic Meters (CUBIC ME)

6. Acre Feet (ACRE FT)

7. Oil Barrels (OIL BARR)

[42 Gallons]

8. Liquid Barrels (LIQ BARR)
[31.5 Gallons]

9. Feet (FEET)

10. Meters (METERS)

11. Pounds (LB)

12. Kilograms (KG)

13. British Thermal (BTU)

Units

12. Thousands of BTUs (MBTU)

Rev. 5/09 -3.14- TFXP

PART 3 - KEYPAD CONFIGURATION

13. Millions of BTUs (MMBTU)

14. Tons (TON)

Select a desired engineering unit for flow accumulator (totalizer)
measurements.

Engineering
Units
TOTAL
Exponent

TOTL E -- Flow Totalizer Exponent Value (Choice)

E-1 to E6

Utilized for setting the flow totalizer exponent. This feature is useful
for accommodating a very large accumulated flow. The exponent is
a ×10n multiplier, where "n" can be from -1 (×0.1) to +6
(×1,000,000). Table 3.5 should be referenced for valid entries and
their influence on the TFX display.

Exponent Display Multiplier
E-1
E0
E1
E2

E3
E4

E5

× 0.1
× 1 (no multiplier)
× 10
× 100

× 1,000
× 10,000

× 100,000

E6

Table 3.5 — Totalizer Exponent Values

Minimum
Flow Rate

Rev. 5/09 -3.15- TFXP

MIN RATE -- Minimum Flow Rate Settings (Value)

Rate Unit/Rate Interval

A minimum volumetric flow rate setting is entered to establish filter
software settings. Volumetric entries will be in the Engineering Rate
Units and Interval selected on pages 3.13 and 3.14. For
unidirectional measurements, set Min Rate to zero. For bi­directional measurements, set Min Rate to the highest negative
(reverse) flow rate expected in the piping system.

× 1,000,000

PART 3 - KEYPAD CONFIGURATION

Maximum
Flow Rate

Low Flow
Cut-off

MAX RATE -- Maximum Flow Rate Settings (Value)

Rate Unit/Rate Interval

A maximum volumetric flow rate setting is entered to establish filter
software settings. Volumetric entries will be in the Engineering Rate
Units and Interval selected on pages 3.13 and 3.14. Set Max Rate
to the highest (positive) flow rate expected in the piping system.

FL C-OFF -- Low Flow Cut-off (Value)

Percent of the range between MIN RATE and MAX RATE
Relative Percent Entry: 0-100%

A Low Flow Cut-off entry is provided to allow very low flow rates
(that can be present when pumps are off and valves are closed) to
be displayed as zero flow. Typical values that should be entered
are between 1.0% and 5.0% of the flow range between Min Rate
and Max Rate.

Generally a Low Flow Cutoff value that equates to a velocity of 0.5
fps is a good starting point. For example, using a 4" pipe and a
maximum flow of 500 GPM, the volumetric flow at 0.5 fps is about
20 GPM. 20 GPM is 4% of the 500 GPM maximum so the Low
Flow Cutoff should be set to 4.

System
Damping

Rev. 5/09 -3.16- TFXP

DAMP PER -- System Damping (Value)

Relative Percent Entry: 0-100%

Flow Filter Damping establishes a maximum
Under stable flow conditions (flow varies less than 10% of reading),
this adaptive filter will increase the number of successive flow
readings that are averaged together up to this maximum value. If
flow changes outside of the 10% window, the flow filter adapts by
decreasing successive flow readings and allows the meter to react
faster. Increasing this value tends to provide smoother steady-state
flow readings and outputs. If erratic flow conditions are present or
expected, more advanced filters are available for use in the
ULTRALINK™ software utility. See Part 4 for further information.

adaptive filter value.

PART 3 - KEYPAD CONFIGURATION

ISO-MOD:
Data Logger
Module
(Optional)

I/O module bay number 1 is reserved exclusively for the ISO Data
Logger module.

The 200,000 event data logger/electronic stripchart recorder can be
configured to match most user applications. The logger stores time­stamped, high resolution (16-bit) data at user selected intervals
ranging from 1 to 30,000 (8.33 hours) second(s).

The module can be carried in a shirt pocket back to the office and
plugged into an RS232 serial port via the module’s integral DB-9
connector. This eliminates the requirement to carry a computer to
the installation site. The data in the logger can also be accessed
without removing the module from the flow meter. Open the door of
the flow meter and connect the 9-pin cable between the data logger
and the PC’s RS232 serial communications port.

Figure 3.5 —

Data Logger Location

NOTE: Not all serial ports have the same load capabilities. If the
data logger is not accessible, the problem may be inadequate power
from the serial port. In these instances an external power supply,
available from Dynasonics, is required.

The logger is capable of storing up to 200,000 measurements. The
measurements are broken into 16 locations or pages with a
maximum number of data points per location of 30,000.

If each location (page) is filled to the maximum then 6 2/3 locations
would be used.

If all 16 locations are to be used, each location could hold a
maximum of 12,500 data points.

Rev. 5/09 -3.17- TFXP

PART 3 - KEYPAD CONFIGURATION

NOTE: The logger will not automatically go to the next location if
the previous location is filled. In this case when the location exceeds
30,000 data points the oldest points will be discarded in favor of new
points. This is the classic FIFO memory stack.

Up to 16 separate logging sessions are possible with up to 12,500
points each but for each new measurement session the logger must
be stopped, a new page selected using the keypad or data logger
utility, and then the logging must be started again. Similarly if a
single data acquisition session were to exceed 30,000 points the
logger must be stopped, a new location selected using the keypad
or data logger utility, and then the logging must be started again.

NOTE: The data logger is not accessible using the TFX’s infrared
adapter. Communications between the data logger and computer
must be established using a directly connected RS232C or RS485
connection.

NOTE: If the data logger is accessed during a logging session the
logger will stop logging as soon as the data retrieval is started. The
logger must be started again when the retrieval process is complete.

NOTE: The flow meter must be on to supply power to the data
logger if information is to be retrieved while the logger is still
installed.

2. DATALOG OPERATION MENU

Data Logger
Configuration

File Number
or Location

Rev. 5/09 -3.18- TFXP

DATALOG PRESENT -- Datalog Present (Choice)

1. Yes

2. No

The TFX must be “told” the data logger is present before any data
can be collected.

DATALOG LOC -- Datalog Location (Value)

1 to 16

PART 3 - KEYPAD CONFIGURATION

Logging
Interval

DATALOG INT -- Datalog Interval (Value) ((Sec))

1 to 30,000

From the Datalog Operation menu, adjust the time Interval between
readings. Interval values between 1 and 30,000 seconds are
acceptable.

For reference there are:

60 seconds in 1 minute
300 seconds in 5 minutes
1,800 seconds in 30 minutes
3,600 seconds in 1 hour
30,000 seconds in 8.33 hours

Table 3.6 on page 3.20 describes some typical configurations of the
Interval and Duration times with what the expected data samples

collected count will be.

NOTE: Data points are collected continuously but written to the
logger at fixed 1 minute intervals. If logging is stopped during the
first minute of operation the logger will not have any stored values.
Whenever the logger is stopped, values for the minute previous to
the logger being stopped will be lost.

Logging
Duration

Rev. 5/09 -3.19- TFXP

DATALOG DUR -- Datalog Duration (Value) ((Hours))

1 to 30,000

If the TFXP is going to be left unattended logging flow data for
extended periods of time, the Duration time can be configured to
stop logging after the Duration of time has passed. Duration is
configured in hours and values between 1 and 30,000 hours are
acceptable.

The Datalog software utility and the serial DB-9 interface cable
included with the logger can be used to access the data.
Connect the male end of the cable to the logger, which is located
in the pocket on the faceplate of the instrument. See Figure 3.5
on page 3.17. The female end is plugged into an RS232 serial
port on a Windows
logger is then accessed using the Datalog utility that is loaded
automatically with the ULTRALINK™ software utility.

®

co mpatib le PC. The data stored in the data

PART 3 - KEYPAD CONFIGURATION

Example No.

INTERVAL

Seconds

DURATION

Hours

Operated

Samples

Collected

1 1 6 21,600
2 10 72 (3 days) 25,920
3 60 (1 min) 480 (20 days) 28,800
4 300 (5 min) 2,016 (12 wks) 24,192
5 1,800 (30 min) 8,760 (1 yr) 17,520
6 3,600 (1 hr) 8,760 (1 yr) 8,760
7 18,000 (5 hr) 26,280 (3 yr) 17,520

Table 3.6 — Logging Interval and Duration Times

Also included with the data logging package is a stand-alone power
supply for use when the data logger is not installed in the TFXP.
Most RS232C serial ports do not supply enough power to enable
data retrieval from the data logger module. When accessing data
stored in the logger without it being connected to the TFXP, this
special power supply should be used.

Figure 3.6 —

Data Logger

Power Supply

See Part 4 for details regarding operation of the Data Logger and
the ULTRALINK™ software utility.

Rev. 5/09 -3.20- TFXP

PART 3 - KEYPAD CONFIGURATION

3. DATALOG MAINTENANCE

Datalog Maintenance permits files to be deleted from the data
logger module. The menu contains three options for deleting files.

Erase All (Choice)

1. Yes

2. No

Deletes all files stored in the data logger.

Erase First (Choice)

1. Yes

2. No

Deletes the first file generated. This would be the oldest file in the
loggers memory.

Start
Data Logger

Erase Last (Choice)

1. Yes

2. No

Deletes the last file generated. This would be the newest file in the
loggers memory.

To Start the Data Logger

1. From the RUN mode data screen press the MENU soft key.

2. Use the UP/DOWN arrow keys to highlight 2.Datalog Operation
and press SELECT soft key. The display will say “Datalog
Present - Yes”.

NOTE: The TFX does not automatically detect if a data logger is
present. The firmware will allow selection of “Datalog Present -
Yes” and “Datalog – Start Datalog – Yes” without a data logger
being installed. Always check the data logger pocket on the
TFXP front panel to be sure a logger is present.

3. Select the Datalog Location ID number shown or using the UP/
DOWN arrow keys choose another number between 1 and 16.

Rev. 5/09 -3.21- TFXP

PART 3 - KEYPAD CONFIGURATION

This number will appear in the “Name” column on the computer
screen before data is downloaded.

NOTE: The firmware will accept any Datalog Location number
between 1 and 30,000 however only 1 thru 16 are valid
locations.

4. Accept Datalog Interval number shown or choose another
number between 1 and 30,000 seconds as the logging interval.
Use the UP/DOWN arrow keys to change the logging interval
values.

5. Choose a Datalog Duration between 1 and 30,000. This value
is in hours. To change the duration value use the UP/DOWN
arrow keys.

6. Press EXIT. The display will ask “Datalog Start Datalog?” Start
the logging session by pressing the YES soft key. The display
will return automatically to the Menu screen.

7. Press EXIT to return to Data Display Screen.

Confirm
Data Logger
Operation

Stop
Data Logger

To Confirm that Data Logger is Running

1. From the RUN mode data screen press the MENU soft key

2. Use the UP/DOWN arrow keys to highlight 2.Datalog Operation
and press SELECT soft key. The display will say “Datalogger is
Running”.

3. Press CANCEL, then EXIT, to return to the data screen.

To Stop Data Logger

1. From the RUN mode data screen press the MENU soft key.

2. Use the UP/DOWN arrow keys to highlight 2.Datalog Operation
and press SELECT soft key. The display will say “Datalogger is
Running”.

3. Press STOP. Indicator will say “Stop Datalog Are you sure?”.

4. Press YES - takes you back to Menu Screen.

5. Press EXIT to return to Data Screen.

Rev. 5/09 -3.22- TFXP

PART 3 - KEYPAD CONFIGURATION

NOTES:

Data logger must be stopped before downloading data. If data
logger is not stopped before downloading data, an erroneous file
will be recorded on the data logger.

The serial cable should not be connected to the data logger
while data logger is running. If the serial cable is connected to
the data logger while data logger is running, error message 3007
will appear on the display and data will be lost.

When using the DataLink software utility on your computer, the
important column is the one entitled “points”. This column shows
the number of points recorded. For example, if 10 seconds is
chosen for Interval and 2 hours is chosen for Duration, the
number of points would be:

6 points per minute × 120 minutes = 720 data points.
Files will save to a Microsoft Excel® spreadsheet by highlighting

the file and clicking the “Save” icon. The Save command saves
the file as a Comma Separated Value (.csv) file, not an *.xls.
CSV files are directly importable into Microsoft Excel®.

The operator must be disciplined about stopping, selecting a
new memory block, and restarting the logger or data may be
lost. To avoid losing data, the operator may want to use only one
location to log. After the logging session is complete, move the
data to an Excel® spread sheet via a computer, delete the data
on the data logger, then start fresh if a new session is required.
This normally will prevent losing important data because it has
already been stored on a computer.

Rev. 5/09 -3.23- TFXP

PART 3 - KEYPAD CONFIGURATION

4. OUTPUT 2 MENU

The second I/O bay is internal to the TFXP and can perform a
number of different functions depending on the ISO Module
installed. The following is a list of the current options and their
menu designations.

OUT2 MEN -- OUTPUT #2 MENU (Choice)

1. 4-20 mA Output (4-20MA)

2. Rate (RATE)

3. Relay (RELAY)

4. Heat Flow (RTD)

5. RS232C Communications (RS232)

6. RS485 Communications (RS485)

Depending on the I/O module installed there will be connections
specific to that output on the side of the TFXP.

ISO-MOD:
4-20 mA
Module
(Optional)

4-20MA -- 4-20 mA Output (Values)

1. Flow at 4 mA (FL 4MA)

2. Flow at 20 mA (FL 20MA)

3. 4 mA Calibration (CAL 4MA)

4. 20 mA Calibration (CAL 20MA)

5. 4-20 mA Test (4-20 TST)

Figure 3.7 — 4-20 mA Output Connection

Rev. 5/09 -3.24- TFXP

PART 3 - KEYPAD CONFIGURATION

Figure 3.8 — 4-20 mA Output Wiring

The 4-20 mA output can be configured to source current (internally
powered) or sink current (externally powered). The choice of sink or
source is configured at the factory to source current unless
otherwise instructed at the time the TFX is ordered.

The 4-20 mA output module interfaces with virtually all recording
and logging systems by transmitting an analog current that is
proportional to system flow rate.

Independent 4 mA and 20 mA span settings are established in
software using the Flow range entries. These entries can be set to

-40

to

+40

any flow values equivalent to
the pipe the instrument is measuring. Output resolution of the
module is 12-bits (4096 discrete points) and the module can drive
up to 850 Ohms of load with its internal 24 VDC isolated power
source.

Internal Power Configuration (Current Source): This is the
factory default condition for the 4-20 mA output. In this
configuration the 4-20 mA output is driven from a +24 VDC
source located within the flow meter. The 24 VDC source is
isolated from DC ground and earth ground connections.

FPS (-12 to +12 MPS) for

Rev. 5/09 -3.25- TFXP

PART 3 - KEYPAD CONFIGURATION

External Power Configuration (Current Sink): If the 4-20 mA
output module was ordered from the factory for external power
the 4-20 mA module requires power from an external DC power
supply. The voltage of the external power source must be
sufficient to power the module and drive the loop load. The loop
loss attributed to the ISO-MOD is 7 VDC, so the minimum
voltage required to power a loop can be calculated using the
following formula:

Loop Voltage (minimum) = (loop load Ohms × 0.02) + 7

Figure 3.9 — Loop Load Chart

4-20 mA Span

Rev. 5/09 -3.26- TFXP

The FL 4MA and FL 20MA entries are used to set the span of the
4-20 mA analog output. These entries are volumetric rate units that
are equal to the volumetric units configured as Engineering Rate
Units and Engineering Units Rate Interval discussed on pages 3.13
and 3.14.

PART 3 - KEYPAD CONFIGURATION

Example 1: To span the 4-20 mA output from -100 GPM to +100
GPM, with 12 mA being 0 GPM, set the FL 4MA and FL 20MA
inputs as follows:

FL 4MA = -100.0
FL 20MA = 100.0

Example 2: To span the 4-20 mA output from 0 GPM to +100
GPM, with 12 mA being 50 GPM, set the FL 4MA and FL 20MA
inputs as follows:

FL 4MA = 0.0
FL 20MA = 100.0

The 4-20 mA ISO-MOD is factory calibrated and should not require
adjustment unless it is replaced.

4-20 mA
Calibration

The CAL 4MA entry allows fine adjustments to be made to the
“zero” of the 4-20 mA output. To adjust the 4 mA output, an
ammeter or reliable reference connection to the 4-20 mA output
must be present.

Figure 3.10 — Typical Multimeter Connection

Rev. 5/09 -3.27- TFXP

PART 3 - KEYPAD CONFIGURATION

NOTE: The CAL 4MA and CAL 20MA entries should not be used
in an attempt to set the 4-20 mA range. Utilize the FL 4MA and FL
20MA, detailed on page 3.26, for this purpose.

Procedure:

1. Disconnect any wires presently connected to the spring clips on
the end of the 4-20 mA output cable. Connect the ammeter in
series with the spring clips on the end of the 4-20 mA output
cable.

NOTE: Be sure to connect the multimeter test leads for current
measurement. If necessary consult the mulitmeters instruction
manual for the correct procedure to perform a current
measurement.

2. Using the UP/DOWN arrow keys, increase the numerical value
to increase the current in the loop to 4 mA. Decrease the value
to decrease the current in the loop to 4 mA. Typical values
range between 40-80 counts.

3. Reconnect the 4-20 mA output circuitry as required.

Calibration of the 20 mA setting is conducted much the same way
as the 4 mA adjustments.

Procedure:

1. Disconnect any wires presently connected to the spring clips on
the end of the 4-20 mA output cable. Connect the ammeter in
series with the spring clips on the end of the 4-20 mA output
cable.

NOTE: Be sure to connect the multimeter test leads for current
measurement. If necessary consult the mulitmeters instruction
manual for the correct procedure to perform a current
measurement.

2. Using the UP/DOWN arrow keys, increase the numerical value
to increase the current in the loop to 4 mA. Decrease the value
to decrease the current in the loop to 4 mA. Typical values
range between 3700 - 3900 counts.

3. Reconnect the 4-20 mA output circuitry as required.

Rev. 5/09 -3.28- TFXP

PART 3 - KEYPAD CONFIGURATION

4-20 mA Test

ISO-MOD:
Rate Pulse
Module
(Optional)

4-20 TST -- 4-20mA Output Test

Allows a simulated value to be output from the 4-20 mA module. By
incrementing this value, the 4-20 mA output will transmit the
indicated current value.

NOTE: This test is only available when the 4-20 mA module is set
up to source current.

The Rate Pulse Output Module is utilized to transmit information to
external counters and PID systems via a frequency output that is
proportional to system flow rate. Independent zero and span
settings are established in software using the flow measuring range
entries. Output resolution of the module is 12-bits (4096
points) and the maximum output frequency setting is 2,500
The pulse width is designed to give a 50% duty cycle. The module
has two output modes, turbine meter simulation and “open
collector”. The turbine meter simulation sources a non-ground
referenced saw-tooth waveform with a maximum amplitude of
approximately 500 mV p-p. The open collector output utilizes a 0.21
Ohm FET output that is rated to operate at 100 V and 1 A
maximum. If the open collector output is utilized, an external
voltage source and limit resistor must be present.

discrete

Hz.

RATE -- Rate Pulse (Value)

1. Flow at 0 Hz (FL 0H)

2. Flow at 2.5k Hz (FL 25KH)

The

FL 0H

0 to

2.5k Hz frequency output. These entries are volumetric rate
units that are equal to the volumetric units configured as
Engineering Rate Units and Engineering Units Rate Interval entered
on pages 3.13 and 3.14.

Example 1: In a bi-directional system, to span the 0 to 2.5k Hz
output from -100 GPM to +100 GPM, with 1.25k Hz being 0 GPM,
set the FL 100H and FL 25KH inputs as follows:

FL 0H = -100.0
FL 25KH = 100.0

Rev. 5/09 -3.29- TFXP

and

FL 25KH

entries are used to set the span of the

PART 3 - KEYPAD CONFIGURATION

Example 2: To span the 0 to 2.5k Hz output from 0 GPM to +100
GPM, with 1.25k Hz being 50 GPM, set the FL 0H and FL 25KH
inputs as follows:

FL 0H = 0.0
FL 25KH = 100.0

K-Factor
Programming

K-Factor Programming

If the device receiving the pulse output is capable of K-factor
scaling, it is possible to use the rate pulse output in a totalizing
function. See K-Factors Explained in the Appendix.

Figure 3.11 — Rate Pulse Output Wiring

Rev. 5/09 -3.30- TFXP

PART 3 - KEYPAD CONFIGURATION

ISO-MOD:
Dual Relay
Module
(Optional)

RELAY -- Dual Relay (Choices and Values)

RELAY 1 AND RELAY 2

1. None (NONE)

2. Totalizer (TOTALIZE)
a. Totalizer Multiplier (TOT MULT)

3. Flow (FLOW)
a. On Setting (ON)
b. Off Setting (OFF)

4. Signal Strength (SIG STR)
a. On Setting (ON)
b. Off Setting (OFF)

5. Errors (ERRORS)

Two independent SPDT (single-pole, double-throw) Form C relays
are contained in this module. The relay operations are user
configured via software to act in either a flow rate alarm, signal
strength alarm, error alarm or totalizer/batching mode. Th e r e la ys
are rated for 200 VAC maximum and a have current rating of

0.5 A resistive load (175 VDC @ 0.25 A resistive). It is highly
recommended that a secondary relay be utilized whenever the dual
relay module is used to control inductive loads such as solenoids
and motors.

Figure 3.12 —

Typical Relay

Connections

Rev. 5/09 -3.31- TFXP

PART 3 - KEYPAD CONFIGURATION

Batch/Totalize
Mode

Flow Rate
Relay

Totalize mode configures the relay(s) to output a 50 mSec pulse
(contact changeover) each time the display totalizer increments –
divided by the Total Mult. The Total Mult value must be a whole,
positive, numeric value.

Example 1: If the Totalizer Exponent is set to E0 (×1) and the
Totalizer Multiplier is set to 1, then the relay will pulse each time the
totalizer increments one count, or each single, whole measurement
unit totalized.

Example 2: If the Totalizer Exponent is set to E2 (×100) and the
Totalizer Multiplier is set to 1, then the relay will pulse each time the
display totalizer increments or once per 100 measurement units
totalized.

Example 3: If the Totalizer Exponent is set to E0 (×1) and the
Totalizer Multiplier is set to 2, the relay will pulse once for every two
counts that the totalizer increments.

Flow rate relay configuration permits relay changeover at two
separate flow rates allowing operation with an adjustable switch
deadband. Figure 3.13 illustrates how the setting of the two set
points influences rate alarm operation.

A single-point flow rate alarm would place the ON> setting slightly
higher than the OFF< setting – allowing a switch deadband to be
established. If a deadband is not established, switch chatter (rapid
switching) may result if the flow rate is very close to the switch point.

Figure 3.13 — Single Point Alarm Operation

Rev. 5/09 -3.32- TFXP

PART 3 - KEYPAD CONFIGURATION

Signal
Strength
Alarm

Errors Alarm
Relay

ISO-MOD:
RTD
(Optional)

The Sig Str alarm will provide an indication that the flow meter
signals between the transducers have fallen to a point where flow
measurements may not be possible. It can also be used to indicate
that the pipe has emptied. Like the flow rate alarm described on
page 3.13, the signal strength alarm requires that two points be
entered, establishing an alarm deadband. A valid switch point
exists when the ON> is a value lower than OFF<. If a deadband is
not established and the signal strength decreases to approximately
the value of the switch point, the relay may chatter.

When a relay is set to Errors mode, the relay will activate when any
error occurs in the flow meter that has caused the meter to stop
measuring reliably. See the Appendix of this manual for a list of
potential error codes.

RTD -- RTD (Value)

Calibration Value for:

1. RTD1 A (RTD1 A)

2. RTD1 B (RTD1 B)

3. RTD2 A (RTD2 A)

4. RTD2 B (RTD2 B)

Inputs from one or two 1000 Ohm RTD temperature sensors allows
measurements of heat flow (one RTD) or heat usage (two RTDs).

The values used to calibrate the RTD temperature sensors are
derived in the laboratory and are specific to an individual RTD. The
RTDs on new units come already attached to the RTD Module and
should not be changed.

Field replacement of RTDs without ISO module replacement is
possible using ULTRALINK ™ . See Part 4.

Rev. 5/09 -3.33- TFXP

PART 3 - KEYPAD CONFIGURATION

Figure 3.14 — RTD Connections

ISO-MOD:
RS232C
Module
(Optional)

RS232C -- RS232C (Choice)

Baud Rate (RS232 BA)

1. 1200 Baud (1200)

2. 2400 Baud (2400)

3. 9600 Baud (9600)

4. 19,200 Baud (19200)

The RS232C module can be interfaced with serial communication
ports of PCs, PLCs and SCADA systems. This module runs a
proprietary digital protocol, detailed in the Appendix of this manual,
that is used to monitor flow rate information in piping systems. The
RS232C module may also be used to form a hardwire connection to
a PC that is running the ULTRALINK™ software utility. Baud rates
up to 19.2k are supported.

Figure 3.15 —

RS232C and RS485

Connections

Rev. 5/09 -3.34- TFXP

PART 3 - KEYPAD CONFIGURATION

ISO-MOD:
RS485
Module
(Optional)

RS485
Mode

RS485 -- RS485 (Choices and Values)

RS485 Mode (RS485 MO)

1. Slave (SLAVE)

2. Master (MASTER)

Baud Rate (RS485 BA)

1. 1200 Baud (1200)

2. 2400 Baud (2400)

3. 9600 Baud (9600)

4. 19,200 Baud (19200)

Device Address (Addr)
(1-127)

The RS485 module allows up to 126 TFX systems to be daisy­chained on a single three-wire cable network. Communications are
through a proprietary digital protocol, detailed in the Appendix of this
manual. All meters are assigned a unique one byte serial number
that allows all of the meters on the cable network to be accessed
independently. Baud rates up to 19.2k and cable lengths to 5,000
feet (1,500 meters) are supported without the need for repeaters.

RS485 MO

Select Slave for all of the TFX meters connected to the unit
designated as Master.

RS485
Baud Rate

RS485
Address

Rev. 5/09 -3.35- TFXP

RS485 BA

Select a Baud rate that is compatible with the operating system.

ADDRESS

Each TFX connected on the communications bus must have a
unique address number assigned. Address 127 is a universal
address that will result in all TFX instruments on the network
responding simultaneously – regardless of address – resulting in
CRC errors. Only select address location 127 if one meter is on the
network.

PART 3 - KEYPAD CONFIGURATION

Transducer
Type

5. SEN MENU -- SENSOR MENU

The SEN MENU is utilized to select the type of transducer that will
be interfaced with the TFX. Select the appropriate transducer from
the list and save the configuration. If the transducer selection is
modified, a system reset is required.

XDUCER TYP -- Transducer Type (Choices and Values)

1. DTTN Standard Transducers (DTTN Clamp-On)

2. DTTH High Temperature Transducers (DTTH Clamp-On)

3. DTT1500 (DTT 1500)

4. Small Pipe Copper (DTTSnC)

5. Small Pipe ANSI (DTTSnP)

6. Small Pipe Tubing (DTTSnT)

6. SEC MENU -- SECURITY MENU

Totalizer
RESET

System
RESET

The SEC MENU allows the user to make password revisions, reset
the flow totalizer and reset the transmitter microprocessor.

TOT RES -- Totalizer Reset (Choice)

1. NO

2. YES

Select YES to reset all flow totalizers/accumulators to zero.

SYS RSET -- System Reset (Choice)

1. NO

2. YES

Select YES to initiate a microprocessor reset.

NOTE: All system configurations and totalizer values will be
retained.

Rev. 5/09 -3.36- TFXP

PART 3 - KEYPAD CONFIGURATION

Change
Password

Signal
Strength
Cutoff

CH PSWD? -- Change the Security Password (Value)

0-9999

By changing the Security Password from 0 to some other value (any
value between 1 to 9999), configuration parameters will not be
accessible without first entering that value when prompted. If the
value is left at 0, no security is invoked and unauthorized changes
could be made.

7. SER MENU -- SERVICE MENU

The SER MENU has features that allow adjustment of Low Signal
Strength Cutoff, Error-Mode outputs, Zero Flow Rate Set and entry
of a universal correction factor.

SIG C-OFF -- Low Signal Strength Cutoff (Value)

The Low Signal Strength Cutoff is used to drive the flow meter and
its outputs to the Substitute Flow value if conditions occur that
cause low signal strength to occur. A signal strength indication
below 2% is inadequate for measuring flow reliably, so minimum
setting for Low Signal Strength Cutoff is 2%. A good practice is to
set the Low Signal Strength Cutoff at approximately 60-70% of
actual measured signal strength (described above).

NOTE: The factory default “Low Signal Strength Cutoff” is 5%.

If the measured signal strength is lower than Low Signal Strength
Cutoff setting, an ERROR 0010 will be appear on the TFX display
until the measured signal strength becomes greater than the cutoff
value.

Substitute
Flow Entry

Rev. 5/09 -3.37- TFXP

SUB FLOW -- Substitute Flow (Value)

Substitute Flow is a value that the analog outputs and the rate
display will indicate when an error condition in the flow meter
occurs. The typical setting for this entry is a value that will make the
instrument display zero flow during an error condition.

Table 3.8 on page 3.38 lists some typical settings to achieve “Zero”
with respect to minimum and maximum rate settings.

PART 3 - KEYPAD CONFIGURATION

Factory
Default Zero
Calibration

MINIMUM

RATE SETTING

MAXIMUM

RATE SETTING

SUBSTITUTE

FLOW SETTING

DISPLAY

READING

DURING ERRORS

0.0 1,000.0 0.0 0.000

-500.0 500.00 50.0 0.000

-100.0 200.0 33.3 0.000

0.0 1,000.0 -5.0* -50.00

* NOTE: ULTRALINK™ is required to set values outside of 0.0 - 100.0.

Table 3.8 — Typical Zero Settings

SET ZERO -- Calibrating Zero Flow (Choice)

1. No

2. Yes

Because every flow meter installation is slightly different and sound
waves can travel in slightly different ways through these various
installations, it is important to remove the zero offset at zero flow to
maintain the meter’s accuracy. A provision is made using this entry
to establish “Zero” flow and eliminate the offset.

To zero the meter:

1. The pipe must be full of liquid.

2. Flow must be absolute zero – securely close any valves and

allow time for any settling to occur.

3. Press EDIT at the Set Zero prompt, use the arrow keys to make

the display read Yes.

4. Press ACCEPT.
The procedure is complete.

Setting/
Calibrating
Zero Flow

D-FLT 0 -- Setting a Zero Flow Point (Choice)

1. No

2. Yes

If the flow in a piping system cannot be shut off, allow the Set Zero
procedure described above to be performed, then the default zero
should be utilized. This procedure places an actual value of zero in

Rev. 5/09 -3.38- TFXP

PART 3 - KEYPAD CONFIGURATION

the meter. This is not as desirable as the Set Zero and should only
be used with large pipes.

1. Press EDIT at the Reset Zero prompt, use the arrow keys to

make the display read Yes.

2. Press ACCEPT.

Correction
Factor

Graphics
Display Mode

COR FTR -- Correction Factor (Value)

(0.500 – 1.500)

This function can be used to make the TFX system agree with a
different or reference flow meter by applying a correction factor/
multiplier to the readings and outputs. A factory calibrated system
should be set to 1.000 (no correction factor). The range of settings
for this entry is 0.500 to 1.500. The following example describes a
possible use for the Correction Factor entry.

Example: The TFX meter is indicating a flow rate that is 4% higher
than another flow meter located in the same pipe line. To make the
TFX indicate the same flow rate as the other meter, enter a
Correction Factor of 0.960 to lower the readings by 4%.

8. DSP MENU -- DISPLAY MENU

DISPLAY LINES -- Number of Display Lines

1. 2 Lines

2. 4 Lines

Allows the selection of a two line or four line display format on the
graphics display module.

In 2 line mode, the display will show flow measurements with larger
characters on the top half of the window and smaller standard sized
characters on the lower half of the window. In 4 line mode, the
display will show flow measurements with standard sized characters
on four lines in the window.

Rev. 5/09 -3.39- TFXP

PART 3 - KEYPAD CONFIGURATION

Back Light
Timeout

BACK LIGHT -- Back Light Timeout (Choice)

1. 30 Seconds (30 Sec)

2. 1 Minute (1 Min)

3. 5 Minutes (5 Min)

4. On (Always On)

The LED backlighting is used to assist the operator in viewing the
display in poorly lit areas. The backlighting, when activated, doubles
the power consumption of the flow meter. If left on continuously, the
charge in the battery will be depleted much more rapidly than if the
backlighting is only activated for short periods of time. If the
instrument is being operated while powered from an external power
source, the backlight may be left on permanently.

Adjust the Back Light Timeout to approximate the amount of
seconds that the backlighting should remain active. The timeout can
be set anywhere between 30 seconds and 5 minutes, or left on
continuously. If continuous backlighting is desired, set the Back
Light Timeout to Always On.

Rev. 5/09 -3.40- TFXP

PART 4 - SOFTWARE UTILITIES

Important
Notice!

The TFXP flow meter can be used with two software utilities,
ULTRALINK™ and Data Logger. The ULTRALINK™ utility is used
for configuration, calibration and communication with the TFXP flow
meter. The Data Logger utility is used for uploading and translating
data accumulated in the data logger module located in the pocket
on the front faceplate of the flow meter.

ULTRALINK™ has been designed to provide a TFX user a powerful
and convenient way to configure and calibrate TFX family flow
meters. ULTRALINK™ can be used in conjunction with the infrared
communications adapter included in the TFXP case or the optional
ISO-MOD RS232 or ISO-MOD RS485.

System Requirements

Computer type – PC, operating system Windows® 95/98/2000/NT/
Vista®, a communications port for the infrared adapter, access to the
Dynasonics website.

Installation

1. Go to www.dynasonics.com.

2. Click the ULTRALINK™ icon at the bottom of page.

3. Follow downloading instructions.

4. Setup.exe will automatically extract and install on the hard disk

and place a short-cut icon on the desktop.

5. Some PCs may require a restart after a successful installation.
A CD of the ULTRALINK™ software may also be purchased by

contacting Dynasonics sales at 800-535-3569 or 262-639-6770.
Please refer to part number D005-0803-104.

Rev. 5/09 -4.1- TFXP

PART 4 - SOFTWARE UTILITIES

Initialization

Connect the infrared communications adapter to a PC
communication port and point the communicator at the TFXP
infrared window located in the lower right-hand corner of the
keypad. If meter is ordered with either ISO-MOD RS232 or ISO­MOD RS485 options, connect the PC communications cable directly
to the DB-9 connection located on the side of the TFXP meter.

Click on the Communications button in the menu bar. Next click
on Initialize. Choose the appropriate COM port and interface type.
For the IR adapter choose IrDA Actisys IR220L. If either an
RS232C or RS485 communications module are used, select the
appropriate choice in the same drop down menu.

Figure 1 — Serial Port Selection

Successful communications between the TFX meter and computer
are indicated by a green “OK” in the COMM box in the lower right­hand corner of the Data Display screen and
Time” near the bottom of the text area of the left-hand side is
tracking the time of the computer the TFX is connected to.

NOTE: For help in establishing communications with the TFX
meter, see “TFX Communications Using ULTRALINK™” in the
Appendix of this manual.

The first screen is the “Data Display” screen, see Figure 4.2 on
page 4.3, which contains real-time information regarding flow rate,
totalizer accumulation, system signal strength, diagnostic data and
the flow meter’s serial number. Click on the button labeled
Configuration for updating flow range, liquid, pipe and I/O
operating information.

Rev. 5/09 -4.2- TFXP

the “Last Update

PART 4 - SOFTWARE UTILITIES

Pipe and
Liquid
Configuration

Figure 4.2 — “Data Display” Screen

The first screen that appears after clicking the Configuration button
is the BASIC tab. See Figure 4.3 on page 4.5.

Basic Tab
General Units allows selection of either English (U.S.) or Metric

units of measure. If measurements of the pipe are to be entered in
inches, select English. If measurements are to be entered in
millimeters, select Metric. If the General Units are altered from
those at instrument startup, then click the Download button in the
lower right-hand portion of the screen and recycle power to the
TFXP.

Transducer Type selects the transducer that will be connected to
the TFX flow meter. Select from DTTN, DTTH, DTTS or DTTC
models. This selection will influence transducer spacing and flow
meter performance. If you are unsure about the type of t ra ns du c er
to which the TFX will be connected, consult the shipment packing
list or call the Dynasonics factory for assistance. A change of
Transducer Type will cause a System Configuration Error to occur.
This error will clear when t he mi cr opr oce ss or is reset or power is
cycled on the flow meter.

Rev. 5/09 -4.3- TFXP

PART 4 - SOFTWARE UTILITIES

Transducer Mount selects the orientation of the transducers on the
piping system. See Part 2 of this manual and Table 2.2 on page

2.5 for detailed information regarding mounting modes for particular
pipe and liquid characteristics. Whenever Transducer Mount is
changed, a download command and subsequent microprocessor
reset or flow meter power cycle must be conducted.

Transducer Spacing is a value calculated by the TFX flow
met er that takes into account pipe, liquid, transducer and mounting
information. This spacing will adapt as these parameters are modified.
The spacing is given in inches for English units selection and
millimeters for Metric. This value is the lineal distance that must be
between the transducer spacing marks. (See Figure 2.3 on page

2.9.)
Pipe Material is selected from the pull-down list. If the pipe material

utilized is not located on the list, select Other and enter pipe
material sound speed (much of this information is available via
websites such as www.ultrasonic.com) and relative roughness (the
RMS value of the internal surface regularities/the pipe internal
diameter) of the pipe.

Pipe O.D. and Wall Thickness are based on the physical
dimensions of the pipe on which the transducers will be mounted.
Enter this value in inches for English units or millimeters for Metric
units.

Liner Material is selected from the pull-down list. If the pipe liner
material utilized is not located on the list, select Other and enter
liner material sound speed (much of this information is available at
websites such as www.ultrasonic.com) and relative roughness (the
RMS value of the internal surface regularities/the pipe internal
diameter) of the pipe liner.

Fluid Type is selected from the pull-down list. If the liquid is not
located on the list, select Other and enter the liquid sound speed
and viscosity into the appropriate boxes. Liquid Specific Gravity
is required if mass measur ements are to be made, and Specific
Heat is required for energy measurements.

Rev. 5/09 -4.4- TFXP

PART 4 - SOFTWARE UTILITIES

Figure 4.3 — Basic Tab Layout

Flow Units
Configuration

Flow Tab
Flow Rate Units are selected from the pull-down lists. Select an

appropriate rate unit and time from the two lists.
Totalizer Units are selected from the pull-down lists. Select an

appropriate totalizer unit and totalizer exponent. The totalizer
exponents are in scientific notation and permit the eight digit
totalizer to accumulate large values before the totalizer “rolls over”
and starts again at zero. Table 4.1 on page 4.6 illustrates the
scientific notation values and their respective decimal equivalents.

MIN Flow is used by the TFX to establish filter settings in its
operating system. Enter a flow rate that is the minimum flow rate
anticipated within the system. For unidirectional systems, this value
is typically zero. For bi-directional systems this value is set to a
negative number that is equal to the maximum negative flow rate
that is anticipated within the system.

MAX Flow is used by the TFX to establish filter settings in its
operating system. Enter a flow rate that is the maximum, positive
flow rate anticipated within the system.

Rev. 5/09 -4.5- TFXP

PART 4 - SOFTWARE UTILITIES

Exponent Display Multiplier
E-1
E0
E1
E2
E3
E4
E5
E6

Table 4.1 — Totalizer Exponent Values

The Damping value is increased to improve stability of the flow rate
readings. Damping values are decreased to allow the flow meter to
react faster to changing flow rates.

Low Flow Cutoff is entered as a percentage between MAX Flow
and MIN Flow and influences how the meter will act at flows very
close to zero. Generally, an entry of 5% provides a stable zero
indication.

Low Signal Cutoff is a relative value that should be entered after a
successful startup. For an initial value, enter 5%. (Signal Strength
indications below 2% are considered to be below the noise ceiling
and should not be indicative of a successful flow meter startup.)

× 0.1
× 1 (no multiplier)
× 10
× 100
× 1,000
× 10,000
× 100,000
× 1,000,000

The Low Signal Cutoff has three purposes:

1. It provides an error indication – Low Signal Strength (Error 0010
on the TFX display) when liquid conditions within the pipe have
changed to the point where flow measurements may not be
possible.

2. It warns if the pipe’s liquid level has fallen below the level of the
transducers.

3. It can also signal that something with the flow meter installation
or configuration may have changed. For example, the couplant
used to mount the transducer has become compromised, a
cable has been disconnected or a pipe size has been altered.

Rev. 5/09 -4.6- TFXP

Downloading
the
Configuration

PART 4 - SOFTWARE UTILITIES

Substitute Flow is used to provide an indication and output that
signifies that an error exists with the flow meter or its setup. It is set
as a percentage between MIN Flow and MAX Flow. In a
unidirectional system this value is typically set to zero to indicate
zero flow while in an error condition. In a bi-directional system, the
percentage can be set such that zero is displayed in an error
condition. To calculate where to set the Substitute Flow value in a
bi-directional system, perform the following operation:

Substitute Flow = 100 −

(

Entry of data in the Basic and Flow tabs is all that is required to
provide flow measurement functions to the flow meter. If the user is
not going to utilize input/output functions, click the Download button
to transfer the configuration to the TFX instrument.

100 × MAX Flow

MAX Flow − MIN Flow

)

Meter Filter
Configuration

Figure 4.4 — Flow Tab Layout

Advanced Tab

The Advanced tab contains several filter settings for the TFX flow
meter. These filters can be adjusted to match response times and
data “smoothing” performance to a particular application. The
factory settings are suitable for most installations.

Rev. 5/09 -4.7- TFXP

PART 4 - SOFTWARE UTILITIES

Time Domain Filter adjusts the number of raw data sets (the wave
forms viewed on the ULTRALINK™ Diagnostics Screen) that are
averaged together. Increasing this value will provide greater
damping of the data and slow the response time of the flow meter.
This filter is not adaptive – it is operational to the value set at all
times.

Low Signal Cutoff is a duplicate entry from Flow tab. Adjusting
this value adjusts the value on the Flow tab.

Substitute Flow is a duplicate entry from Flow tab. Adjusting this
value adjusts the value on the Flow tab.

Short Pulse Duration is a function used on pipes larger than 8
inches (200 mm). If the pipe has an outer diameter of 8 inches or
more, make sure that the Auto Short Pulse box is checked. Set
this value to zero to disable the function.

Flow Filter Damping establishes a maximum adaptive filter value.
Under stable flow conditions (flow that varies less than the Flow
Filter Hysteresis entry) this adaptive filter will increase the number
of successive flow readings that are averaged together up to the
maximum value entered in this field. If flow changes outside of the
Flow Filter Hysteresis window, the Flow Filter adapts by
decreasing the number of averaged readings and allows the meter
to react faster. Increasing this value tends to provide smoother
steady-state flow readings and outputs.

Flow Filter Hysteresis creates a window around the average flow
measurement reading whereby if the flow varies within that window,
Flow Filter Damping will increase up to the maximum value
entered in the Flow Filter Damping field. The filter also establishes
a flow rate window where measurements outside of the window are
captured by the Bad Data Rejection Filter. The value is entered as
a percentage of actual flow rate.

Example: If the average flow rate is 100 GPM and the Flow Filter
Hysteresis is set to 5%, a filter window of 95-105 GPM is

established. Successive flow measurements that are measured
within that window are recorded and averaged in accordance with
the Flow Filter Damping setting. Flow readings outside of the
window are held up in accordance with the Bad Data Rejection
Filter.

Rev. 5/09 -4.8- TFXP

PART 4 - SOFTWARE UTILITIES

Flow Filter MinHysteresis sets a minimum hysteresis window that
is invoked at sub 0.25 FPS (0.08 MPS) flow rates, where the “of
rate” Flow Filter Hysteresis is very small and ineffective. This entry
is entered in picoseconds and is differential time. If very small fluid
velocities are to be measured, increasing the Flow Filter

MinHysteresis valu e c a n i n c r e a s e reading stability.
Flow Filter Sensitivity allows configuration of how fast the Flow

Filter Damping will adapt in the positive

value allows greater damping to occur faster than lower values.
Adaptation in the negative direction is not user adjustable.

Bad Data Rejection is a value related to the number of successive
readings that must be measured outside of the Flow Filter
Hysteresis and Flow Filter MinHysteresis windows before the
flow meter will assume the change is actual. Larger values are
entered into the Bad Data Rejection when measuring liquids that
contain gas bubbles, as the gas bubbles tend to disturb the
ultrasonic signals and cause more extraneous flow readings to
occur. Larger Bad Data Rejection values tend to make the flow
meter more sluggish to rapid changes in actual flow rate.

direction. Increasing this

Figure 4.5 — Advanced Tab Layout

Rev. 5/09 -4.9- TFXP

PART 4 - SOFTWARE UTILITIES

Output
Configuration

Output Tab

The entries made in the Output tab establish input and output
calibration and ranges for ISO-MOD modules installed in the TFX
flow meter. If a module was ordered from and installed at the
factory, then the Output tab will contain information and
configuration for that module.

If a module has been changed from the factory setting, a
configuration error will result. This error will be cleared by
resetting the TFX microprocessor from the Communications/
Commands/Reset Target button or by cycling power on the TFX
flow meter. Once the proper output module is selected and the
microprocessor is reset, calibration and configuration of the module
can be completed. If a module slot is empty in the TFX enclosure,
select NONE as the module type.

Standard TFXP flow meters contain a single 4-20 mA output module
located in Module #2 position with the capability of accepting an
optional data logger located in Module #1 position. The window will
appear as shown in Figure 4.6 on page 4.11. (The 4-20 mA
module is mounted internally in the flow meter and requires meter
disassembly to replace the module. The data logger is located
under the sealed front plate on the meter face and is designed for
repeated installation and removal.) Detailed information regarding
all of the module and configuration options is available in Part 3 of
this manual. To disable the data logger, select None for Module #1,
and select any other module for Module #2.

4-20 mA Module Configuration
If the 4-20 mA output has been installed, the screen shown in Figure

4.6 on page 4.11 will appear in ULTRALINK™ at the Output tab.
Flow @4mA and Flow @20mA set the span of the 4-20 mA output.

The entry is made in the same flow measurement units that were
entered in the Flow tab. The output can be set to span across zero
(4 mA can be set to a negative flow value) so that the module will
output bi-directional flow. For example, if a flow

-100 to +100, the TFX will output 4 mA at ­+100 and output 12 mA (50% of the output) at 0.

range spans from

100 and 20 mA at

Rev. 5/09 -4.10- TFXP

PART 4 - SOFTWARE UTILITIES

Calibration/Test is used to adjust the factory calibration span of the
4-20 mA output and to test the output. The 4-20 mA output is factory
calibrated and should not require adjustment in the field. If the
module is replaced or if recalibration is required, the following
procedure is used to calibrate the span of the module:

1. Connect a milliamp meter serially within the 4-20 mA module
output.

2. Check the Calibration/Test box.

3. Select the 4 mA Calibration box.

4. Adj ust the count value to the right of the 4 mA button until
the milliamp meter registers 4.00 mA.

5. Select the 20 mA Calibration box.

6. Adjust the count value to th e right of the 20 mA button until
the milliamp meter registers 20.00 mA.

7. Press the Test button.

8. Adjust the count value to 12.

9. Verify that the milliamp meter registers 12.00 mA.

10. Uncheck the Calibration/Test box.

Figure 4.6 — Output Tab Layout

Rev. 5/09 -4.11- TFXP

PART 4 - SOFTWARE UTILITIES

Setting Zero and Calibration

ULTRALINK™ contains a powerful multi-point calibration routine
that can be used to calibrate the TFX flow meter to a primary
measuring standard in a particular installation. To initialize the three­step calibration routine, click on the Calibration button located on
the top of the ULTRALINK™ Data Screen. The display shown in
Figure 4.7 will appear. The first step (Page 1 of 3) in the calibration
process is the selection of the engineering units with which the
calibration will be performed. Select the units and click the Next
button at the bottom of the window.

Figure 4.7 — Calibration (Page 1 of 3)

The second screen (Page 2 of 3) Figure 4.8 on page 4.13,
establishes a baseline zero flow rate measurement for the
instrument. To zero the flow meter, establish zero flow in the pipe
(turn off all pumps and close a dead-heading valve). Wait until the
delta-time interval shown in Figure 4.8 is stable (and typically very
close to zero). Click the Set button. Click the Next button when
prompted, then click the Finish button on the Calibration Screen.

Important!

Rev. 5/09 -4.12- TFXP

NOTE: If the Set button was clicked, do not proceed with Flow
Rate Calibration before clicking the Finish button to save the Zero
setting.

PART 4 - SOFTWARE UTILITIES

Important!

Figure 4.8 — Calibration (Page 2 of 3)

The final screen (Page 3 of 3) shown in Figure 4.9 on page 4.14
allows multiple actual flow rates to be recorded by the TFX. To
calibrate a point, establish a stable, known flow rate (verified by a
real-time primary flow instrument), enter the actual flow rate in the
Figure 4.9 window and click the Set button.

NOTE: If only two points are to be used (zero and span), it is
preferable to use the highest flow rate anticipated in normal
operation as the calibration point. If an erroneous data point is
collected, the point can be removed by pressing the Edit button,
selecting the bad point and then selecting Remove.

Press the Finish button when all points have been gathered.

NOTE: Do not enter a zero flow rate under page 3 of 3 above.
NOTE: Dynasonics recommends only using one span point to

achieve highest results.

Rev. 5/09 -4.13- TFXP

PART 4 - SOFTWARE UTILITIES

Saving the
Configuration

Printing a
Report

Figure 4.9 — Calibration (Page 3 of 3)

Saving Meter Configuration on a PC

The complete configuration of the flow meter can be saved from the
Configuration screen. Select File Save button located in the lower
left-hand corner of the screen and name the file. Files are saved as
a *.dcf extension. This file may be transferred to other flow meters
or may be recalled should the same pipe be surveyed again or
multiple meters programmed with the same information.

Printing a Flow Meter Configuration and Calibration Report

Select File from the upper task bar and Print to print a calibration/
configuration information sheet for the flow meter installation.

Rev. 5/09 -4.14- TFXP

PART 4 - SOFTWARE UTILITIES

Using the
Data Logger
Software

During the installation of ULTRALINK™, a file called Data Logger
was installed and its icon will appear in the ULTRALINK™ folder
under Program Files. Double-click on the Datalog.exe icon to start
the utility. The screen shown in Figure 4.10 will appear as the
computer is attempting to establish communications with the logger
module.

Figure 4.10 — Data Logger Connection Screen

Connect the logger to the computer’s serial communications port
with the enclosed DB-9 cable. After a few moments, the Please
Wait window will disappear and a green OK will appear in the lower
right-hand corner of the window. After communications are
established (and the OK is displayed) the utility will scan the logger
for all existing files. If the logger module is very full, uploading of the
file data may take several minutes. A bar graph showing upload
progress will provide status. The files will appear on the table (see
Figure 4.11 on page 4.16). Information regarding starting time,
date and points collected will appear.

If a file is selected, the time-stamped data will appear on the strip
chart located on the bottom of the window. The mouse can be used
to select a small portion of the graph and expand the data to the
width of the screen. To revert to the entire data file, right-click the
graph.

To save the file to a computer, select the file from the file table and
click the Save button located on the top task bar (see Figure 4.12
on page 4.16). Data Logger saves the files in *.csv (comma
separated value) format. These files can be opened in any
programs that can read comma separated value files.

Rev. 5/09 -4.15- TFXP

PART 4 - SOFTWARE UTILITIES

Figure 4.12 — Saving Data Logger Files

Figure 4.11 — File Uploading

Rev. 5/09 -4.16- TFXP

PART 4 - SOFTWARE UTILITIES

The data logger module contains a real-time clock that can be set
by clicking the Clock button on the top task bar (see Figure 4.13).
Activating the window compares the data logger clock to the clock
located in the PC. Adjustments can be made and uploaded to the
logger.

Figure 4.13 — Data Logger Clock

Rev. 5/09 -4.17- TFXP

PART 4 - SOFTWARE UTILITIES

NOTES

Rev. 5/09 -4.18- TFXP

HEAT FLOW ADDENDUM

General

The TFX flow meter with the optional RTD (heat flow) Module
installed is designed to measure the rate and quantity of heat
delivered to a given building, area or heat exchanger. The
instrument measures the volumetric flow rate of the heat exchanger
liquid (water, water/glycol mixture, brine, etc.), the temperature at
the inlet pipe and the temperature at the out let pip e. Heat delive ry
is calculated by the following equation:

Rate of heat delivery = Q × (Tin – T

out

) × c

Where
Q = volumetric flow rate
T
T

= temperature at the inlet

in

= temperature at the outlet

out

c = specific heat of the liquid
The RTD module installed in the TFX measures the differential

temperature of two 1,000 Ohm three-wire platinum RTDs. The
three-wire configuration allows the temperature sensors to be
located several hundred feet away from the TFX meter without
influencing system temperature measuring accuracy or stability.

The RTDs included with the TFX heat flow option have been factory
calibrated and are marked with an identification as to which input
number, 1 or 2, the RTD has been calibrated. The RTDs are 1,000
Ohm platinum and are designed to be mounted on the exterior
surface of the pipe. The RTDs are rated for a te mperatur e range of

-40 to +200 °C in three steps:
0 to + 50 °C

0 to +100 °C

-40 to +200 °C

The RTD temperature range should be chosen referencing the
maximum temperature of the liquid to be measured. By using the
narrowest temperature range, the resolution of the temperature
measurement will be maximized.

Rev. 5/09 -A.1- TFXP

HEAT FLOW ADDENDUM

Installation

Installation

1. Follow the instructions outlined in the standard TFX manual for
proper installation of the ultrasonic transducers. After
installation, verify that the signal strength is sufficient for stable
flow readings and, if possible, perform a Zero flow calibration on
the pipe. Please note that all readings require a full pipe of
liquid.

2. Select ar eas on the inlet and outlet pipes where the RTDs will
be mounted. Remove or peel back the insulation all the way
around the pipe in the installation area. Clean an area slightly
larger than the RTD down to bare metal on the pipe.

3. Place a small amount of heat sink co mpound on the pip e in th e
RTD installation location. Se e Figure A.1 Press the RTD firmly
into the compound. Fasten the RTD to the pipe with the
included heater tape.

Figure A.1 — Surface Mount RTD Installation

4. Route the RTD wires to an electrical junction box in close
proximity to the installation location. Secure the RTD wires
such that they will not be pulled on or abraded inadvertently.
Replace the insulation on the pipe.

Rev. 5/09 -A.2- TFXP

HEAT FLOW ADDENDUM

5. Rout e a cable from the electr ical junction box back to the TFX
flow meter. Connect the RTDs as illustrated in Figure A.2. Note
that th e SNS1 and DRV1 wires originate from the same loca tion
on the RTD.

Figure A.2 — RTD Connection

Programming

Transmitter Programming

1. The RTDs included with the TFX heat flow option have been
factory calibrated and are marked with an identification as to
which terminal, #1 or #2, the RTD has been calibrated. If
recal ibration of the RTDs is require d or RTDs other than those
supplied with the TFX are being utilized, the ULTRALINK™
software utility will be required to enter calibration values.
ULTRALINK™ can also be used to configure all operating
parameters of the heat flow ins trument.

2. T o pro perl y mea sure heat d eliv ery, the specific heat capacity of
the liquid must be enter ed. W hen a liq ui d i s c hosen from the FL
TYPE list, a default specific heat will be loaded. This default
value is displayed as SP HEAT in the BASIC MENU. If the
actual specific heat of the liquid is known or if it differs from the
default value, press the ENTER key and modify the value.
Press the ENTER key to save the value. See the values listed
in Tables 1 and 2 for specif ic values. E nter a value that is the
mean of both pipes.

3. The RATE UNIT can be displayed as four different values; BTUs,
MBTU, MMBTU, or TON. Select the proper unit from the RATE

Rev. 5/09 -A.3- TFXP

HEAT FLOW DDENDUM

HEAT FLOW ADDENDUM

UNIT list. Select the appropriate RATE INTERVAL from the list
(seconds, minutes, hours, days). Be aware that the instrument
can only display values as large as 99,999,999.

4. Select an appropriate TOTALIZER UNIT from the list; BTUs,
MBTU, MMBTU, or TON .

5. From t he main display, three values can be accessed that may
aid in troubleshooting the heat flow instrument. The
temperature being read by RTD1 is indicated as TEMP1 (all
values are degrees Celsius) , RTD2 as TEMP2 and the absolute
difference as TEMPDIFF.

Heat Capacity of Water (J/g°C)

°C 0 1 2 3 4 5 6 7 8 9

0 4.2174 4.2138 4.2104 4.2074 4.2045 4.2019 4.1996 4.1974 4.1954 4.1936
10 4.1919 4.1904 4.1890 4.1877 4.1866 4.1855 4.1846 4.1837 4.1829 4.1822
20 4.1816 4.0310 4.1805 4.1801 4.1797 4.1793 4.1790 4.1787 4.1785 4.1783
30 4.1782 4.1781 4.1780 4.1780 4.1779 4.1779 4.1780 4.1780 4.1781 4.1782
40 4.1783 4.1784 4.1786 4.1788 4.1789 4.1792 4.1794 4.1796 4.1799 4.1801
50 4.1804 4.0307 4.1811 4.1814 4.1817 4.1821 4.1825 4.1829 4.1833 4.1837
60 4.1841 4.1846 4.1850 4.1855 4.1860 4.1865 4.1871 4.1876 4.1882 4.1887
70 4.1893 4.1899 4.1905 4.1912 4.1918 4.1925 4.1932 4.1939 4.1946 4.1954
80 4.1961 4.1969 4.1977 4.1985 4.1994 4.2002 4.2011 4.2020 4.2029 4.2039
90 4.2048 4.2058 4.2068 4.2078 4.2089 4.2100 4.2111 4.2122 4.2133 4.2145

Table A.1 — Heat Capacity of Water

Rev. 5/09 -A.4- TFXP