lanry TF1100-EC Manual

TF1100-EC Series
Transit Time Ultrasonic Flow Meter
Clamp-on & Insertion
Operation & Maintenance
Manual
REV 2/2023
Copyright ©Lanry Instruments(shanghai) Co.,Ltd. All rights reserved.

TF1100-EC/EI transit-time ultrasonic heat meter manual
CONTENTS
PART-1 INTRODUCTION .........................................................................................................................2
1.1 GENERAL ........................................................................................................................................... 2
1.2 PRINCIPLE OF MEASUREMENT .................................................................................................... 2
1.3 APPLICATIONS .................................................................................................................................. 3
1.4 FEATURES .......................................................................................................................................... 4
1.5 SPECIFICATIONS ...............................................................................................................................5
1.6 PARTS IDENTIFICATION ..................................................................................................................6
PART-2 TRANSDUCER INSTALLATION .............................................................................................. 7
2.1 GENERAL ........................................................................................................................................... 7
2.2 MOUNTING LOCATION ................................................................................................................... 7
2.3 TRANSDUCER SPACING ..................................................................................................................8
2.4 TRANSDUCER MOUNTING ...........................................................................................................10
2.5 TRANSDUCER MOUNTING INSPECTION AND COUPLANT APPLICATION ........................ 14
PART-3 TRANSMITTER INSTALLATION CONNECTION AND OPERATION
INSTRUCTIONS .......................................................................................................................................15
3.1 TRANSMITTER INSTALLATION ...................................................................................................15
3.2 TRANSDUCER CONNECTIONS .................................................................................................... 16
3.3 TRANSMITTER POWER AND OUTPUT CONNECTIONS ..........................................................17
3.4 KEYPAD CONFIGURATION ...........................................................................................................18
3.5 PIPE PARAMETER ENTRY SHORTCUTS ..................................................................................... 19
PART-4 WINDOWS DISPLAY EXPLANATIONS ................................................................................20
PART-5 ENERGY FUNCTION ............................................................................................................... 32
5.1 INTRODUCTION .............................................................................................................................. 32
5.2 WIRING CONNECTION .................................................................................................................. 33
5.3 ENERGY CALCULATION ............................................................................................................... 33
5.4 TEMPERATURE RANGE .................................................................................................................33
PART-6 TEMPERATURE SENSOR INSTALLATION ........................................................................34
6.1 PT1000 TEMPERATURE SENSOR ................................................................................................. 34
6.2 TEMPERATURE SENSOR INSTALATION .................................................................................... 34
(a) 6.2.1 CLAMP-ON TEMPERATURE SENSOR ................................................................................ 34
(b) 6.2.2 INSERTION TEMPERATURE SENSOR ................................................................................ 34
PART-7 HOW TO USE MENU FUNCTIONS ....................................................................................... 36
7.1 HOW TO JUDGE THE LIQUID FLOWING DIRECTION ............................................................. 36
7.2 HOW TO RESET THE DEFAULT SETUPS .....................................................................................36
7.3 HOW TO STABILIZE THE FLOW .................................................................................................. 36
7.4 HOW TO USE THE LOW FLOW-CUTOFF FUNCTION ............................................................... 36
7.5 HOW TO SETUP A ZERO POINT CALIBRATION ........................................................................ 36
7.7 HOW TO USE SCALE FACTOR ......................................................................................................37

TF1100-EC/EI transit-time ultrasonic heat meter manual
7.8 HOW TO USE THE 4~20M A OUTPUT .......................................................................................... 37
7.9 HOW TO USE THE RELAY OUTPUT .............................................................................................37
7.10 HOW TO USE PULSE OUTPUT ....................................................................................................38
7.11 HOW TO SET THE DATE AND TIMER ........................................................................................38
7.12 ON/OFF NET TOTALIZER .............................................................................................................38
7.13 UNITS OPTIONS ............................................................................................................................ 38
7.14 LCD BACKLIT OPT IONS ............................................................................................................. 38
7.15 USE MENU WINDOWS FOR TRANSDUCER MOUNTING INSPECTION ..............................38
PART-8 FREQUENTLY ASKED QUESTIONS AND ANSWERS .......................................................40
PART-9 WARRANTY AND SERVICE ................................................................................................... 41
9.1 WARRANTY ......................................................................................................................................41
9.2 SERVICE ............................................................................................................................................41
APPENDIX 1 INSERTION TRANSDUCER INSTALLATION .......................................................... 42
A, MENU CONFIGURATION................................................................................................................... 42
B, INSTALLATION LOCATING................................................................................................................42
C, DRILLING HOLES............................................................................................................................... 44
D, MOUNTING THE TRANSDUCERS..................................................................................................... 45
E, TRANSDUCER WIRING...................................................................................................................... 46
F, HOW TO OBTAIN GOOD SIGNAL STRENGTH AND SIGNAL QUALITY.......................................... 46
APPENDIX 2 MODBUS-RTU COMMUNICATIONS PROTOCOL ..................................................47
APPENDIX 3 DATA LOGGER ............................................................................................................... 52
APPENDIX 4 FUILD CHARACTERISTIC (SOUND SPEED) ...........................................................54
1. FLUID PROPERTIES .......................................................................................................................... 54
2. WATER SOUND SPEED .....................................................................................................................56
3. PIPE MATERIAL SOUND SPEED TABLE ....................................................................................... 56

TF1100-EC/EI Manual
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PART-1 INTRODUCTION
1.1 GENERAL
Wall-mounted transit-time ultrasonic flow meters works on transit-time principle. It
includes TF1100-EC clamp-on type and TF1100-EI insertion type. They are used for liquid
flow measurement in fully filled pipe. Two types of transducers are sufficient to cover the
most common pipe diameter ranges and materials. In addition, its optional thermal energy
measurement capability makes it possible to carry out a complete analysis of thermal
energy usage in any facility.
This flexible and easy to use flow meter is the ideal tool for the support of service and
maintenance activities. It can also be used for the control or even for the temporary
replacement of permanently installed meters.
1.2 PRINCIPLE OF MEASUREMENT
The TF1100 ultrasonic flow meter is designed to measure the fluid velocity of liquid within
a closed pipe. The transducers are a non-invasive, clamp-on type, which will provide
benefits of non-fouling operation and easy installation.
The TF1100 transit time flow meter utilizes two transducers that function as both ultrasonic
transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a
specific distance from each other. The transducers can be mounted in V-method where the
sound transverses the pipe twice, or W-method where the sound transverses the pipe four
times, or in Z-method where the transducers are mounted on opposite sides of the pipe and
the sound crosses the pipe once. This selection of the mounting method depends on pipe
and liquid characteristics. The flow meter operates by alternately transmitting and
receiving a frequency modulated burst of sound energy between the two transducers and
measuring the transit time that it takes for sound to travel between the two transducers. The
difference between the transit-time is directly and exactly related to the velocity of the
liquid in the pipe, as shown in Figure 1.
/fV Kdt TL
Figure 1

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Where:
fV
Liquid velocity
K
Constant
dt
Difference in time of flight
TL
Average Transit Time
When measuring temperature, the two temperature sensors of Pt1000 clamp on the pipeline
or insert in the pipe, and get two temperature values.
The value of energy is indicated / measured based on the following mathematical model:
Where: Q – Quantity of heat given up
V – Volume of liquid passed
k – Heat coefficient, is a function of the properties of the heat-conveying liquid at
the relevant temperatures and pressure
t1 – Inlet temperature of liquid
t2 – Outlet temperature of liquid
1.3 APPLICATIONS
1. Water, sewage (with low particle content) and sea water
2. Water supply and drainage water
3. Process liquids; Liquors
4. Milk, yoghourt milk
5. Gasoline kerosene diesel oil
6. Power plant
7. The flow patrolling and examining
8. Metallurgy, Laboratory
9. Energy-conservation, economize on water
10. Food and medicine
11 Heat measures, Heat balance
12 On-the-spot check-up, standard, the data are judged, Pipeline leak detection

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1.4 FEATURES
Advanced Digital Signal Processor technology and the MultiPulseTM transducer
technology.
TF1100-EC is Clamp-on type, non-invasive system allows solids to pass through the
pipe within effect on meter. Y-strainers or filtering devices are not needed. TF1100-EI
is Insertion type, hot-tapped.
Digital cross-correlation technology.
Since the sensors do not contact the liquid, fouling and maintenance are eliminated.
Provides easy and low cost installation by clamping on the outside of existing piping
systems.
Clear, user-friendly menu selections make TF1100 simple and convenient to use.
Two pairs of transducers can satisfy different materials , wide different pipe diameters.
Multiline display, can display total flow, flow rate, velocity and meter run status.
Parallel operation of positive, negative and net flow totalizes with scale factor and 7
digit display, while the output of totalize pulse and frequency output are transmitted via
open collector.
U.S., British and Metric measurement units are available. Meanwhile, almost
all-universal measurement units worldwide may be selected to meet customer’s
requirements.

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1.5 SPECIFICATIONS
Transmitter:
Principle
Ultrasonic transit-time difference correlation principle
Channel
One
Velocity range
0.01 to 12 m/s, bi-directional
Resolution
0.25mm/s
Repeatability
0.2% of reading
Accuracy
±1% of reading at rates >0.3 m/s);±0.003 m/s of reading at rates<0.3 m/s
Response time
0.5s
Sensitivity
0.003m/s
Damping
0-99s(selectable by user)
Liquid Types
Supported
Both clean and somewhat dirty liquids with turbidity <10000 ppm
Power Supply
AC: 85-265V DC: 24V/500mA
Enclosure type
Wall-mounted
IP class
IP66 according to EN60529
Operating temp.
-20℃to +60℃
Material
Fiberglass
Display
4.3“ color LCD 5 lines display, 16keys
Units
User Configured (English and Metric)
Rate
Rate and Velocity Display
Totalized
gallons, ft³, barrels, lbs, liters, m³,kg
Communication
4~20mA,OCT, Relay, RS485 (Modbus),Logged data,GPRS/GSM, NB-IOT
Size
244*196*144mm
Weight
2.4kg
Transducer
IP class
IP67 or IP68 according to EN60529
Liquid Temp.
Clamp on:-35℃~200℃; Insertion: -35℃~150℃
Pipe range
Clamp on B: 20mm-50mm; Clamp-on A: 40mm-5000mm;
Insertion: 65-5000mm
Size
Clamp-on B type: 40*24*22mm; Clamp-on A type 46*31*28mm;
Insertion：Φ58*199mm
Material
Clamp-on: Aluminum +peek; Insertion: SUS304+peek
Temp. Sensor
Pt1000 Clamp-on or Insertion type
Weight (2 pairs):
Clamp-on：3.2kg ; Insertion：7kg
Cable Length
Std: 10m

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1.6 PARTS IDENTIFICATION
Transmitter Clamp-on transducer Insertion transducer
S-S Belt PT1000 clamp-on PT1000 insertion
Couplant Drill tools Ball valve base

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PART-2 TRANSDUCER INSTALLATION
2.1 GENERAL
The transducers that are utilized by the Series TF1100 contain piezoelectric crystals for
transmitting and receiving ultrasound signals through walls of liquid piping systems. The
transducers are relatively simple and straight-forward to install, but spacing and alignment
of the transducers is critical to the system's accuracy and performance. Extra care should be
taken to ensure that these instructions are carefully executed.
Mounting of the clamp-on ultrasonic transit time transducers is comprised of three steps:
Selection of the optimum location on a piping system.
Entering the necessary parameters into the TF1100 keypad.
(TF1100 will calculate proper transducer spacing based on these entries.)
Pipe preparation and transducer mounting.
2.2 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 is 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 an
error code 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. 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 cavitations in the pipe.

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Piping configuration
And transducer
position
Upstream
Dimension
Downstream
Dimension
Pipe Diameters（*）
Pipe Diameters（**）
10
5
14
5
24
5
30
5
10
5
24
10
Table 2.1 Straight Pipe Requirement
2.3 TRANSDUCER SPACING
TF1100 transducers are clamped on the outside of a closed pipe at a specific distance from
each other. The transducers can be mounted in V-mode where the sound transverses the
pipe two times, W-mode where the sound transverses the pipe four times, or in Z-mode
where the transducers are mounted on opposite sides of the pipe and the sound crosses the
pipe once. For further details, reference pictures located under Table 2.2. The appropriate
mounting configuration is based on pipe and liquid characteristics. Selection of the proper
transducer mounting method is not entirely predictable and many times is an 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. W-mode provides the longest sound path length between the transducers - but the
weakest signal strength. Z-mode provides the strongest signal strength - but has the shortest
sound path length.

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Table 2.2
Transducer Mounting Modes
Transducer
Mount Mode
Pipe
Material
Pipe Size
Liquid
Composition
V-Mode
Plastic
Metal
1-30 in. (20-750 mm)
2-24 in. (50-600 mm)
Low TSS;
non-aerated
Z-Mode
Plastic
Metal
＞12 in. (＞300 mm)
＞8 in. (＞200 mm) or < 4 in. (< 100 mm)
Low TSS;
non-aerated
W-Mode
not recommend
Plastic
Metal
1-4 in. ( 20-100mm )
1-4 in. ( 20-100mm )
Low TSS;
non-aerated
TSS= Total Suspended Solids
Plastic includes all pipe material such as PVC, PP, PTFE, PVDF, etc.
Metal includes all pipe material such as SS, steel, copper, aluminium, etc, etc.
Transducer Mounting Modes
Z method
V method
W method
The TF1100 system calculates proper transducer spacing by utilizing piping and liquid
information entered by the user.
The following information is required before programming the instrument. Note that much
of the data relating to material sound speed, viscosity and specific gravity are preprogramed

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into the TF1100 flow meter. This data only needs to be modified if it is known that a
particular liquid data varies from the reference value. Refer to Part 3 of this manual for
instructions on entering configuration data into the TF1100 flow meter via the meter keypad.
Transducer mounting configuration. See Table 2.2
1. Pipe Outer Diameter)
2. Pipe wall thickness
3. Pipe material
4. Pipe sound speed
5. Pipe relative roughness
6. Pipe line thickness
7. Pipe line material
8. Pipe line sound speed
9. Fluid type
10. Fluid sound speed
Nominal values for these parameters are included within the TF1100 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 TF1100 will calculate proper transducer spacing for
the particular data set. This distance will be in inches if the TF1100 is configured in
English units, or millimeters if configured in metric units.
2.4 TRANSDUCER MOUNTING
After selecting an optimum mounting location and successfully determining the proper
transducer spacing, the transducers may now be mounted onto the pipe.
The transducers must be properly oriented on the pipe to provide optimum reliability and
performance. On horizontal pipes, one pair 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 2.1. Figure 2.1 does not apply to vertically
oriented pipes. On vertical pipes the orientation does not apply.

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On vertical pipes the orientation does not apply.
Pipe Preparation
Before the transducers are mounted onto the pipe surface, two areas slightly larger than the
flat surface of the transducer heads 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.
Observe Signal Strength while placing the transducers into position. Signal Strength can be
displayed on Menu RSSI.
V-Mode and W-Mode Installation
1. For TF1100 transducers, place a single bead of couplant, approximately 1.2 mm thick,
on the flat face of the transducer. Generally, 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 will be acceptable.
Figure 2.2
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 stick 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 2.3. 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. A Signal Strength (RSSI)
between 60 and 95 is acceptable.
4. If after adjustment of the transducers the Signal Strength（RSSI）does not rise to above
60, then an alternate transducer mounting method should be selected. If the mounting
method was W-mode, then reconfigure the TF1100 for V-mode, reset the TF1100, move the
downstream transducer to the new location and repeat step 3.

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Figure 2.3 Transducer position
V-Mount is the STD installation method, it is convenient and accurate, Reflective type
(transducers mouthed on one side of the pipe) of installation used primarily on pipe size in
the (50mm~400mm) internal diameter range attention transducer designed parallel on the
centre line of installing the pipeline.
The spacing value shown on menu refers to the distance of inner spacing between the two
transducers. The actual transducers spacing should be as close as possible to the spacing
value. The transducer spacing is from the end of one transducer to another sensor.
The transducer mounting spacing is very important for Transit-time meters, and users need
mount transducers exactly according to the spacing distance value displays after users input
proper parameter settings. Pls note the distance is only for reference, and just keep it within
97--103 value range.
As the above figure shows, the normal transducer spacing refers to the distance between the
ends of the two transducers (one pair). And this spacing should be according to the value
Menu tells you. Note that this method suits for normal Small, Std. M transducer.
Mounting Transducers in Z-Mount Configuration
Installation on larger pipes requires careful measurements to the linear and radial placement
of the L1 transducers. Failure to properly orient and place the transducers on the pipe may
lead to weak signal strength and/or inaccurate readings. The section below details a
method for properly locating the transducers on larger pipes. This method requires a roll of
paper such as freezer paper or wrapping paper, masking tape and a marking device.
1. Wrap the paper around the pipe in the manner shown in Figure 2.4. Align the paper
ends to within 6 mm.
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 2.5.

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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 2.1 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 to these dimensions and lay it over the top of the pipe.
Length = Pipe O.D. x 1.57; width = Spacing determined on page 2.6
Mark opposite corners of the paper on the pipe. Apply transducers to these two marks.
5. Place a single bead of couplant, approximately 1.2 mm thick, on the flat face of the
transducer. See Figure 2.2. Generally, a silicone-based grease is used as an acoustic
couplant, but any grease-like substance that is rated to not “flow” at the temperature that the
pipe may operate at, will be acceptable.
a) 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.
b) Try to help hold the transducer onto the strap. Verify that the transducer is true to
the pipe - adjust as necessary. Tighten transducer strap securely. Larger pipes may require
more than one strap to reach the circumference of the pipe.
6. Place the downstream transducer on the pipe at the calculated transducer spacing. The
installation of a pair of sensors is used as an example. The method of the other pair is the
same. See Figure 2.6. 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
RSSI of between 60 and 95 percent is acceptable. On certain pipes, a slight twist to the

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transducer may cause signal strength to rise to acceptable levels.
7. Secure the transducer with a stainless steel strap or other.
Figure 2.6
Z-Mode transducer placements
2.5 TRANSDUCER MOUNTING INSPECTION AND COUPLANT
APPLICATION
2.5.1 Transducer Mounting Inspection
It is very important to use menu operations for TRANSDUCER MOUNTING
INSPECTION and Estimation, Use menu windows for Transducer Mounting Inspection.
2.5.2 Couplant Application
A, It is also very important for couplant application.
When mounting the transducers, apply just enough pressure so that the couplant fills the
gap between the pipe and transducer. Commonly, the Dow 732 for permanent and Dow 111
for temporary installations, but Dow 111 has a better coupling effect. If Dow 732 was used,
ensure that no relative movement between the transducer and the pipe takes place during
the setting time and do not apply instrument power for at least 24 hours, Dow 111 also be
used for permanent installations(avoid rain or water etc.), setting time is not necessary. We
recommend using Dow 111 for permanent installing, and then use Dow732 around the
transducer in order to fix the transducer, waterproof cloth is recommended if the
Transducers are installed outdoor. Dow 112 for high temperature application.
B, Transducers for High Temperature
Mounting of high temperature transducers is similar to TF1100 standard transducers; High
temperature installations require acoustic couplant Dow Corning 112 that is rated not to
flow at the temperature that will be present on the pipe surface.

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PART-3 TRANSMITTER INSTALLATION CONNECTION AND
OPERATION INSTRUCTIONS
3.1 TRANSMITTER INSTALLATION
After unpacking, it is recommended to save the shipping carton and packing materials in
case the instrument is stored or re-shipped. Inspect the equipment and carton for damage. If
there is evidence of shipping damage, notify the carrier immediately.
The enclosure should be mounted in an area that is convenient for servicing, calibration or
for observation of the LCD readout (if so equipped).
1. Locate the transmitter within the length of transducer cable that was supplied with the
TF1100 system. If this is not possible, it is recommended that the cable be exchanged for
one that is of proper length. Transducer cables that are up to 300 meters may be
accommodated.
2. Mount the TF1100 transmitter in a location that is:
♦ Where little vibration exists.
♦ Protected from falling corrosive fluids.
♦ Within ambient temperature limits -20 to 60°C
♦ Out of direct sunlight. Direct sunlight may increase transmitter temperature to above the
maximum limit.
3. Mounting: Refer to Figure 3.1 for enclosure and mounting dimension details. Ensure
that enough room is available to allow for door swing, maintenance and conduit entrances.
Secure the enclosure to a flat surface with four appropriate fasteners.
4. Conduit holes. Conduit hubs should be used where cables enter the enclosure. Holes not
used for cable entry should be sealed with plugs.
NOTE: Use NEMA 4 [IP65] rated fittings/plugs to maintain the water tight integrity of the
enclosure. Generally, the left conduit hole (viewed from front) is used for line power; the
center conduit hole for transducer connections and the right hole are utilized for OUTPUT
wiring.
5 If additional holes are required, drill the appropriate size hole in the enclosure’s bottom.
Use extreme care not to run the drill bit into the wiring or circuit cards.

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Figure 3.1 Mechanical Dimensions
3.2 TRANSDUCER CONNECTIONS
To access terminal strips for electronic connectors, loosen the two screws in the enclosure
door and open the door.
Guide the transducer terminations through the transmitter conduit hole located in the
bottom-center of the enclosure.
The terminals within TF1100 are a pluggable type - they can be removed wired and then
plugged back in. Connect the appropriate wires to the corresponding screw terminals in the
transmitter. Observe UP/DN transducers orientation, the status of the two pairs of
transducers are equal. There is no need to specify the transmitting and receiving transducers.
(if flow rate display negative, exchange the UP/ DN wiring).
For TF1100-EC/EI, pls connect the two transducers with T1- UP/T1-DN.
T2-UP/T2-DN is only for TF1100-DC/DI dual-channel ultrasonic flowmeter.
─ T1 (+, -) and T2 (+, -) are used for PT1000 temperature sensor wires. T1 is for inlet pipe and T2 is
for outlet pipe.

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Figure 3.2
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 transducers. If
additional cable is required, contact the factory to arrange an exchange for a transducer with
the appropriate length of cable.
Cables to 300 meters are available.
3.3 TRANSMITTER POWER AND OUTPUT CONNECTIONS
1, Connect line power to the screw terminals AC, GND or DC in the transmitter. See the
Figure 3.2, the ground terminal grounds the instrument, which is mandatory for safe
operation.
DC Power connection: The TF1100 can be operated from a 9-28 VDC source, as long as
the source is capable of supplying a minimum of 3 Watts.
NOTE: This instrument requires clean electrical line power. Do not operate this unit on
circuits with noisy components (i.e., fluorescent lights, relays, compressors, or variable
frequency drives). It is recommended not to run line power with other signal wires within
the same wiring tray or conduit.
2, Connect the 4~20mA wires to the appropriate (LOOP/I+ I-) (The 4-20 mA output do not
requires power from an external DC power supply)
3, Pulse output
The pulse output can only be output by hardware OCT or relay. It requires a 10 kΩpull-up
resistor and an external 24V power supply. The wiring diagram is as below.

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Figure 3.3 Pulse wires connection
3.4 KEYPAD CONFIGURATION
3.4.1, Keypad functions
After transducer and connection of appropriate power supply to TF1100, keypad
configuration of the instrument can be undertaken. Generally, there should be no display of
error messages, and the flow meter will go to the most commonly used Menu to display the
Velocity, Flow Rate, Positive Totalizer, Signal Strength and Signal Quality, based on the
pipe parameters entering by the user or by the initial program.
The TF1100 contains a 16-key tactile keypad, allows the user to view and change
configuration parameters as shown below.
Follow these guidelines when using TF1100 keypad:
0 ~ 9 and .to input numbers and decimal.
CLR to backspace or delete characters to the left.
The ARROW keys 8∧and 2 ∨To return to the last
menu or to open the next menu, are used to scroll
through menu configuration parameters; also acts as
“+” and “-” functions when entering numbers.
The ESC key is used to exit the current screen;
The ENT key is also confirm key, it is used to "confirm" that a number or selection has
been entered. Another function is to enter the "Modify" state before entering parameters.
The FUC key is used to view the heat value, temperature, CH TX-Time.