OEM TUF-2000F User manual

TUF-2000F User Manual
1. Introduction
1.1 Preface
Welcome to use new generation transit-time ultrasonic flow meter, please read the user manual carefully
before using.
1.2 Features
◆Linearity: 0.5%, Repeatability: 0.2%, Accuracy:±1%
◆Several type transducers for selection, measuring pipe size is from DN15mm to DN6000mm
◆
◆Adopt low voltage, multi-pulse technology to improve accuracy, useful life and reliability.
◆Powerful Recording Function, record the totalizer data of the last 64 days/64 monthes/5 years.
1.3 Flow measurement principle
The TUF-2000F ultrasonic flow meter is designed to measure the fluid velocity of liquid within a closed
conduit. The transducers are a non-contacting, clamp-on type, which will provide benefits of non-fouling
operation and easy installation.
The TUF-2000F 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 in the transit time
measured is directly and exactly related to the velocity of the liquid in the pipe, show as follows:
Downstream transducer
1
Where
θis the include angle to the flow direction
M is the travel times of the ultrasonic beam
spacing
flow
Upstream transducer
Tdown
Tup θ
downup TT TMD
V


 2sin

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D is the pipe diameter
Tup is the time for the beam from upstream transducer to the downstream one
Tdown is the time for the beam from downstream transducer to the upstream one
ΔT=Tup –Tdown
1.4 Optional transducer
TS◆-1 clamp-on type transducer, pipe size from DN15-100mm
TM◆-1 clamp-on type transducer, pipe size from DN50-1000mm
TL◆-1 clamp-on type transducer, pipe size from DN300-6000mm
1.5 Typical application
The wall-mounting flow meter can be applied to a wide range of pipe flow measurements. Applicable liquids
include pure liquids as well as liquid with small quantity of tiny particles.
Examples are:
★Water (hot water, chilled water, city water, sea water, waste water, etc.);
Sewage with small particle conte★nt;
Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.);★
Chemicals (alcohol, acids, etc.);★
Plant effluent;★
Beverage, liquid food;★
Ultra★-pure liquids;
Solvents and other liquids★
1.6 Product Identification
Each set of the flow meter has a unique product identification number or ESN (electronic serial number)
written into the software that can only be modified with a special tool by the manufacturer. In
case of any hardware failure, please provide this number which is located on menu window M61 when
contacting the manufacturer.
1.7 Specifications
Items Specifications
Accuracy Better than ±1%
Repeatability Better than 0.2%
Principle Transit-time measuring principle
Measurement
Period 500ms
Main unit
Display LCD with backlight, display accumulated flow/heat, instantaneous
flow/heat, velocity, time etc.

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Analogue output: 4-20mA or 0-20mA current output. Impedance
01k. Accuracy 0.1%.
OCT output: Frequency signal (1~9999HZ)
Relay output: over 20 source signal (no signal, reverse flow etc.)
Output
RS485 serial port
Three analogue input
Input Three-wire PT100 resistor input (optional)
Other functions
Automatically record the totaliser data of the last 64 days / 64 months
/
5 years;
The power-on time and corresponding flow rate of the last 64 power on
and off events. Allow manual or automatic flow loss compensation
The instrument working status of the last 64 days
material Steel, stainless steel, cast iron, cement pipe, copper, PVC, aluminum,
FRP etc. Liner is allowed
Size 15-6000mm
pipe
Straight pipe
section
In the upstream it must be beyond 10D, in the downstream it must be
beyond 5D, in the upstream the length must be beyond 30D from the
access of the pump. (D stands for pipe diameter)
Types Water, sea water, industrial sewage, acid & alkali liquid, alcohol, beer,
all kinds of oils which can transmit ultrasonic single uniform liquid
Temperature Standard: -30˚C - 90˚C ，High-temperature：-30˚C - 160˚C
Liquid
Turbidity Less than 10000ppm, with a little bubble
Flow Direction Bi-directional measuring, net flow/heat measuring
Main Unit: -30˚C - 80˚C
Temperature Transducer: -40℃-110 , Temperature transducer: select on enquiry℃
Main Unit: 85% RH
Environment
Humidity Transducer: water-immersible, water depth less than 3m
Cable
Twisted Pair Line, standard length of 20m, can be extended to 500m (not recommended);
Contact the manufacturer for longer cable requirement.
RS-485 interface, transmission distance up to 1000m
Power Supply AC220V or DC24V
Power
Consumption Less than 1.5W
Protocols MODBUS, M-BUS, Fuji extended protocol and other factory protocol
1.8 wiring diagram

TUF-2000F User Manual
1. Menu Window Details
The flow meter user interface comprises about 100 independent windows. That are numbered
by M00, M01,M02……. M99,M+0,M+1 etc.
You do not need to remember all the menu windows. Just remember the most command used
windows and the proximate window numbers of some uncommonly used windows would be
sufficient. You can always use the going up and going down key to find the right window.
Note: 1 It is recommended to practice those menu windows on your flow meter while reading
this chapter for the sake of easier understanding.
2 To quickly switch to a menu window, simply press the ‘MENU’ key followed by the
window number (a two digit number). To move from one window to the next, use ‘UP’
or ‘Down’ keys.
Menu
window
No. Function
M00
Display flow rate and NET totalizer
If the net totalizer is turned off, the net totalizer value shown on the screen is the
value prior to its turn off
Select all totalizer unit in menu M31
M01 Display flow rate, velocity
M02 Display date time and POS(positive) totalizer
4

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If the positive totalizer is turned off, the positive totalizer value shown on the screen
is the value prior to its turn off
M03
Display flow rate and NEG(negative) totalizer
If the negative totalizer is turned off, the negative totalizer value shown on the
screen is the value prior to its turn off
M04 Display date and time, flow rate. The date and time setting method is found in
MENU60
M05 Display energy rate(instantaneous Caloric)and total energy (Caloric)
M06 Display temperatures, inlet T1, outlet T2
M07 Display analog inputs, AI3/AI4, current value and its corresponding temperature
or pressure or liquid level value
M08
Display all the detailed error codes
Display working condition and system error codes. ‘R’ stands for normal, others
refer to Chapter for details.
M09 Display today’s total NET flow
M10
Window for entering the outer perimeter of the pipe
If pipe outer diameter is known, skip this menu and go to Menu 11to enter the outer
diameter
M11
Window for entering the outer diameter of the pipe. Valid range:0 to 18000mm.
Note: you just need to enter either the outer diameter in M11 or the peripheral in
M10
M12 Window for entering pipe wall thickness
You may skip the menu and enter inner diameter in M13 instead.
M13
Window for entering the inner diameter of the pipe
If pipe outer diameter and wall thickness are enter correctly, the inner diameter will
be calculated automatically, thus no need to change anything in the window
M14
Window for selecting pipe material
Standard pipe materials (no need to enter material sound speed ) include:
(0) carbon steel (1) stainless steel (2) cast iron (3) ductile iron (4) copper
(5)PVC (6)aluminum ,(7) asbestos (8) fiberglass
(9) other( need to enter material sound speed in M15)
M15 Window for entering the pipe material speed, only for non-standard pipe materials
M16
Window for selecting the liner material, select none for pipes without any liner.
Standard liner materials(no need to enter the liner sound speed) include:
(1) Tar Epoxy (2) Rubber (3) Mortar (4) Polypropylene (5) Polystryol
(6)Polystyrene (7) Polyester (8) Polyethylene (9) Ebonite (10) Teflon
(11) Other (need to enter liner sound speed in M17)
M17 Window for entering the non-standard liner material speed.
M18 Window for entering the liner thickness, if there is a liner
M19 Window for entering the ABS thickness of the inside wall of the pipe
M20
Window for selecting fluid type
For standard liquids(no need to enter fluid sound speed) include:
(0) Water (1) Sea Water (2) Kerosene

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(3) Gasoline (4) Fuel oil (5) Crude Oil
(6) Propane at -45C (7) Butane at 0C
(8)Other liquids(need to enter sound speed in M21 and viscosity in M22) (9)
Diesel Oil (10)Caster Oil (11)Peanut Oil (12) #90 Gasoline (13) #93
Gasoline (14) Alcohol (15) Hot water at 125C
M21 Window for entering the sound speed of non- standard liquid, used only when
option item 8 ‘Other’ is selected in M20
M22 Window for entering the viscosity of the non-standard liquids, used only when
option item 8 ‘Other’ is selected in M20
M23
Window for selecting transducer type, There are 22 types as following
0. Standard M (The middle size)
1. Insertion Type C
2. Standard S
3. User Type
4. Standard B
5. Insertion Type B(45)
6. Standrad L (The large size transducers)
7. JH-Polysonics
8. Standard-HS (small size transducer for Handheld flow meter)
9. Standard-HM (middle size transducer for Handheld flow meter)
10. Standard-M1 (middle size transducer #1)
11. Standard-S1 (small size transducer #1)
12. Standard-L1 (large size transducer #1)
13. PI-Type
14. FS410 (middle size transducer for FUJI flow meter)
15. FS510 (large size transducer for FUJI flow meter)
16. Clamp-on TM-1 (Middle size transducer for Taosonics Instrument)
17. Insertion TC-1 (for Taosonic Instrument)
18. Calmp-on TS-1 (small size for Taosonics Instrument)
19. Reserved
20. Clamp-on TL-1 (For Taosonics Instrument)
21. Insertion TLC-1 (For Taosonics Instrument)
If the user-type-transducer is selected, you need enter additional 4
user-type-wedge parameters that describe the user transducers.
If the PI-type transducer is selected, you need enter additional 4 PI-type transducer
parameters that describe the PI-type transducers
M24
Window for selecting the transducer mounting methods
Four methods can be selected:
(0) V-method (1) Z-method (2) N-method (3) W-method
M25 Display the transducer mounting spacing or distance
M26
(1) A switch for the parameters in flash memory will be loaded when power is
turned on. The default option is that the parameters will be loaded. If this switch
is not turned on, the system will try to use the parameters in the system RAM, if
these parameters are ok, otherwise the system will load the parameters in
flash memory

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(2) Function to store the current parameters into the flash memory, so that these
parameters will be solidified and will be loaded as the default parameters every
time when power is turned on.
M27
Entry to store to or restore from the internal Flash memory, as many as 9 different
pipe parameter configurations
To save or load the current setup parameter, use the going up or going down keys
to change the address number, press ‘ENT’ key, and use going down or going up
keys to select to save to or load from the memory.
M28 Entry to determine whether or not to hold (or to keep) the last good value when
poor signal condition occurs. YES is the default setup.
M29
Entry to setup empty signal threshold. When the signal is less than this threshold,
the pipe is regarded as empty pipe, and the flow meter will not totalize flow.
This is based on the fact that, for most occasions, when pipe is empty, the
transducer would still receive signal, just smaller than normal, As a result, The flow
meter would show normal operation, which is not correct.
Make sure that the entered value must be less than the normal signal strength.
When much noisy signals are received, to make sure the flow meter will not
incorrectly totalize flow, there is also a ‘Q’ threshold should be entered in M.5
M30 Window for selecting unit system. The conversion English to Metric or vice versa
will not affect the unit for totalizers.
M31
Window for selecting flow rate unit system.
Flow rate can be in
0.Cubicmeter shortfor (m
3)
1.Liter (l)
2.USA gallon (gal)
3.ImperialGallon (igl)
4. Million USA gallon (mgl)
5.Cubicfeet (cf)
6.USAliquidbarrel (bal)
7.Oilbarrel (ob)
The flow unit in terms of time can be per day, per hour, per minute or per second.
So there are 32 different flow rate units in total for selection.
M32 Window for selecting the totalizers unit. Available units are the same as those in
M31
M33 Window for setting the totalizer multiplying factor
The multiplying factor ranges from 0.001 to 10000. Factory default is 1
M34 Turn on or turn off the NET totalizer
M35 Turn on or turn off the POS (positive) totalizer
M36 Turn on or turn off the NEG(negative) totalizer
M37
(1) Totalizer reset
(2) Restore the factory default settings parameters. Press the dot key followed by
the backspace key. Attention, It is recommended to make note on the parameters
before doing the restoration
M38 Manual totalizer used for easier calibration. Press a key to start and press a key to
stop the manual totalizer.
M39 Interface Language selection.
The selection could also be chan
g
ed automaticall
y
b
y
the s
y
stem, if En
g
lish LCD

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display is used as the display device.
M3.
Setup for local segmental LCD display. Enter 0 or 1 for the non-auto-scan mode;
Enter 2~39 for the auto-scan mode. In the auto-scan mode the display will
automatically scan displaying from 00 to the entered number of the local segmental
LCD display.
M40
Flow rate damper for a stable value. The damping parameter ranges form 0 to 999
seconds.
0 means there is no damping. Factory default is 10 seconds
M41 Low flow rate (or zero flow rate) cut-off to avoid invalid accumulation.
M42 Zero calibration/Zero point setup. Make sure the liquid in the pipe is not running
while doing the setup.
M43 Clear the zero point value, and restore the solidified zero point value.
M44 Set up a flow bias. Generally this value should be 0.
M45 Flow rate scale factor. The default value is ‘1’.
Keep this value as ‘1’, when no calibration has been made.
M46
Networks address identification number. Any integer can be entered except
13(0DH, carriage return), 10 (0AH, line feeding), 42 (2AH), 38, 65535.
Every set of the instrument in a network environment should have a unique IDN.
Please refer to the chapter for communication.
M47
System locker to avoid modification of the system parameters.
If password is forgotten, you could send a command ‘LOCK0’ to the serial input to
unlock. Or you can write 0 to REGISTER49-50 under MODBUS protocol.
M48
Entry to linearity correcting data inputs. By using of this function, the non-linearity of
flow meter will be corrected. Correcting data shall be obtained by careful
calibration.
M49 Displays the input contents for the serial port.
By checking the displays, you can know if the communication is ok.
M50
Switches for the built-in data logger. There are as many as 22 different items can
be chosen. To turn this function, select ‘YES’ the system will ask for selecting the
items. There are 22 items available. Turn on all those items you want to output
M51
Window to setup the time of scheduled output function (data logger, or
Thermo-printer). This includes start time, time interval and how many times of
output. When a number great than 8000 entered for the times of output, It means
the output will be keeping always. The minimum time interval is 1 second and the
maximum is 24 hours.
M52
Data logging direction control.
(1) If ‘Send to RS485’ is selected, all the data produced by the data logger will be
transmitted out through the RS-232/RS485 interface
(2) If ‘To the internal serial BUS is selected, the data will be transmitted to the
internal serial bus which allows a thermal printer, or a 4-20mA analog output
module, to be connected to it.
M53 Display analog inputs, AI5, current value and its corresponding temperature or
pressure or liquid level value.
M54 Pulse width setup for the OCT (OCT1) output. Minimum is 6 mS, maximum is 1000
mS
M55 Select analog output (4-20mA current loop, or CL) mode. Available options:

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(0) 4-20mA output mode (setup the output range from 4-20mA)
(1) 0-20mA output mode (setup the output range from 4-20mA, This mode can only
be used with Version-15 flow meter)
(2) Serial port controls 0-20mA
(3) 4-20mA corresponding fluid sound speed
(4) 20-4-20mA mode
(5) 0-4-20mA mode (can only be used with Version-15 flow meter)
(6)20-0-20mA mode(can only be used with Version-15 flow meter)
(7) 4-20mA corresponding flow velocity
(8)4-20mA corresponding heat flow rate
M56
4mA or 0mA output value,
Set the value which corresponds to 4mA or 0mA output current (4mA or 0mA is
determined by the setting in M55)
M57 20mA output value,
Set the value which corresponds to 20mA output current
M58 Current loop verification
Check if the current loop is calibrated correctly.
M59 Display the present output current of current loop circuit.
M60 Setup system date and time. Press ENT for modification. Use the dot key to skip
the digits that need no modification.
M61
Display Version information and Electronic Serial Number (ESN) that is unique for
each flow meter.
The users may employ the ESN for instrumentation management
M62
RS-232/RS485 setup. All the devices connected with flow meter should have
matched serial configuration.
The following parameters can be configured: Baud rate (300 to 19200 bps), parity,
data bits (always is 8), stop bits
M63
Select communication protocol.
Factory default is ‘MODBUS ASCII. this is a mode for MODBUS-ASCII,
Meter-BUS, Fuji Extended Protocol, Huizhong’s various protocols.
If you are going using MODBUS-RTU you have to select ‘MODBUS_RTU’.
M64
AI3 value range.
Used to enter temperature/pressure values that are corresponding to 4mA and
20mA input current. The display values have no unit, so that they can present any
physical parameter.
M65
AI4 value range.
Used to enter temperature/pressure values that are corresponding to 4mA and
20mA input current.
M66
AI5 value range.
Used to enter temperature/pressure values that are corresponding to 4mA and
20mA input current.
M67
Windows to setup the frequency range (lower and upper limit) for the frequency
output function. Valid range is 0Hz-9999Hz. Factory default value is 0-1000 Hz.
For Version-12, Version-13, Version-14 flow meters, you need a hardware module,
which shall be plugged to the Serial Expanding Bus, for the frequency output
function. Please remember to order the module if you need frequency output
function.

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For Version-15 flow meter, you need to indicate on your orders that you need the
frequency function; Otherwise you will get a flow meter which has no frequency
output circuits.
M68 Window to setup the minimum flow rate value which corresponds to the lower
frequency limit of the frequency output.
M69 Windows to setup the maximum flow Rate value that corresponds to the upper
frequency limit of the frequency output.
M70
LCD display backlight control. The entered value indicates how many seconds the
backlight will be on with every key pressing. If the enter value is great than 50000
seconds, It means that the backlight will always keeping on.
M71 LCD contrast control. The LCD will become darker or brighter when a value is
entered.
M72 Working timer. It can be cleared by pressing ENT key, and then select YES.
M73 Window to setup the lower limit of flow rate for Alarm#1.
When the flow rate is below the set value, Alarm#1 equals ‘on’
M74
Window to setup the upper limit of flow rate for Alarm#1.
When the flow rate is above the set value, Alarm#1 equals ‘on’
There are two alarms in the flow meter, and every alarm can be pointed to alarm
output devices such as the BUZZER or OCT output or RELAY output. For example,
if you want the Alarm#1 is to output by the OCT circuit, you need to set M78 at
selection item 6.
M75 Window to setup the lower limit of flow rate for Alarm#2.
M76 Window to setup the upper limit of flow rate for Alarm#2.
M77
Buzzer setup.
If a proper input source is selected, the buzzer will beep when the trigger event
occurs. The available trigger sources are:
0.NoSignal 1. Poor Signal
2. Not Ready (No*R) 3. Reverse Flow 4. AO Over 100%
5. FO Over 120% 6. Alarm #1 7. Reverse Alarm #2
8. Batch Control 9. POS Int Pulse 10.NEG Int Pulse
11.NET Int Pulse 12.Energy POS Pulse 13.Energy NEG Pulse
14.Energy NET Pulse 15.MediaVel=>Thresh 16.MediaVelo<Thresh
17.ON/OFF viaRS232 18.Daily Timer (M51) 19.Timed alarm #1
20. Timed alarm #2 21.Batch Totalizer Full 22. M51 Timer
23. Key Stroking ON 24.Disable BEEPER
M78
OCT (Open Collect Transistor Output)/OCT1 setup
By selecting a proper input source, the OCT circuit will close when the trigger event
occurs. The available trigger sources are:
0. No Signal 1. Poor Signal
2. Not Ready(No*R) 3. Reverse Flow 4. AO Over 100%
5. FO Over 120% 6. Alarm #1 7. Reverse Alarm #2
8. Batch Control 9. POS Int Pulse 10.NEG Int Pulse
11.NET Int Pulse 12.Energy POS Pulse 13.Energy NEG Pulse
14.Energy NET Pulse 15.MediaVel=>Thresh 16.MediaVelo<Thresh
17.ON/OFF viaRS232 18. Daily Timer (M51) 19.Timed alarm #1

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20. Timed alarm #2 21.Batch Totalizer Full
22. Periodically M51 Timer 23. Oct Not Using
The OCT circuit does not source voltage at its output. It must be connected with an
external power and pull-up resistant for some occasions.
When the OCT circuit is close, it will draw current. The maximum current shall not
be over 100mA.
Attention: the maximum voltage applied to OCT can not be over 80 volts.
M79
Relay or OCT2 setup
By selecting a proper input source, the RELAY will close when the trigger event
occurs
The available trigger sources are:
0. No Signal 1. Poor Signal
2. Not Ready(No*R) 3. Reverse Flow 4. AO Over 100%
5. FO Over 120% 6. Alarm #1 7. Reverse Alarm #2
8. Batch Control 9. POS Int Pulse 10.NEG Int Pulse
11.NET Int Pulse 12.Energy POS Pulse 13.Energy NEG Pulse
14.Energy NET Pulse 15.MediaVel=>Thresh 16.MediaVelo<Thresh
17.ON/OFF viaRS232 18. Timer (M51 Daily) 19.Timed alarm #1
20. Timed alarm #2 21.Batch Totalizer Full
22. Periodically M51 Timer 23. Disable Relay
The RELAY is of SPST (Single pole, single throw) type. It is rated for 110VAC max
and have a current rating of 0.5A resistive load.
It highly recommended that a salve relay to be utilized whenever a large resistive
load or inductive load is to be controlled.
Note. In order to make the user interface compatible with the former version7, the
name RELAY was used other than OCT2, but in fact it is an OCT output.
M80
Window for selecting the trig signal for the built-in batch controller. Available trig
sources:
0. Key input (press ENT key to start the batch controller)
1. Serial port
2. AI3 rising edge (when AI3 receives 2mA or more current)
3. AI3 falling edge (when AI3 stop receiving 2mA or more current)
4. AI4 rising edge (when AI3 receives 2mA or more current)
5. AI4 falling edge (when AI3 stop receiving 2mA or more current)
6. AI5 rising edge (when AI3 receives 2mA or more current)
7. AI5 falling edge (when AI3 stop receiving 2mA or more current)
8.Timer periodically (define the start time and interval time in M51)
9.Timer daily (define the start time and interval time in M51)
For the input analog current signal, 0 mA indicates “0”, 4mA or more indicates ‘1’.
By selecting item #8, the batch totalizer can be started periodically by the internal
timer located at Menu51. When the batch totalizer is full, a signal which indicate the
batch is full can be direct to either the OCT or the RELAY terminals to stop the
pump or other devices.
By selecting item #9, the batch totalizer could act as totalizer witch runs for only a
period of the day so that a alarm signal could be produced if the total flow during
that time period is over a certain amount of. For example, if
y
ou want a alarm si
g
nal

TUF-2000F User Manual
12
which stand for the total flow is over 100 cubic meters during the period of every
day from 20:00 to 06:00, setups is like
M51 start time =20:00:00
M51 interval =10:00:00
M51 log times =9999 (means always)
M80 select item #9
M81 input 100 (Unit is defined in M30,M31,M32)
M81
The built-in batch controller
Set the flow batch value(dose)
The internal output of the batch controller can be directed either to the OCT or the
RELAY output circuits.
M81 and M80 should be used together to configure the batch controller.
Note: Because the measuring period is 500mS, the flow for every dos should be
keeping at 60 seconds long to get a 1% dose accuracy.
M82
View the daily, monthly and yearly flow totalizer and thermal energy totalizer value.
The totalizer values and errors for the last 64 days, 32 last 32 months and last 2
years are stored in the RAM memory, To view them, use the ‘ENT’ and ‘UP’ ‘Down’
keys.
M83
Automatic Amending Function for automatic offline compensation.
Select ‘YES’ to enable this function, select ‘NO’ to disable it.
When the function is enabled, The flow meter will estimate the average flow
uncounted (or ‘lost’) during the offline session and add the result to the totalizer.
The estimation of the uncounted flow is made by computing the product of the
offline time period and the average flow rate, which is the average of the flow rate
before going offline and the one after going on line.
M84 Set the thermal energy unit:
0.GJ 1.KC 2.KWh 3.BTU
M85
Select temperature sources
0. from T1,T2 (factory default)
1. from AI3,AI4
M86
Select the Specific Heat Value.
Factory default is ‘GB’. Under this setting, the flow meter will calculate the enthalpy
of water based on the international standard.
If the fluid is other than water, you should select option ‘1. Fixed Specific Heat’, and
enter the specific heat value of the fluid.
M87 Turn on or turn off the Energy totalizer.
M88 Select thermal energy totalizer multiplying factor.
Factory default is ‘1’.
M89 1. Display the temperature difference
2. Window for entering the lowest temperature difference.
M90
Display signal strengths S (one for upstream and one for downstream), and signal
quality Q value.
Signal strength is presented by 00.0 to 99.9, the bigger the value, the bigger the
signal strength will be, and more reliable readings will be made.
Q value is presented by 00 to 99, the bigger the better. It should at least be great
than 50 for normal operations.

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M91
Displays the Time Ratio between the Measured Total Transit Time and the
Calculated time. If the pipe parameters are entered correctly and the transducers
are properly installed, the ratio value should be in the range of 100±3%. Otherwise
the entered parameters and the transducer installation should be checked.
M92
Displays the estimated fluid sound velocity. If this value has an obvious difference
with the actual fluid sound speed, pipe parameters entered and the transducer
installation should be checked again.
M93 Displays total transit time and delta time(transit time difference)
M94
Displays the Reynolds number and the pipe factor used by the flow rate
measurement program. Pipe factor is calculated based on the ratio of the
line-average velocity and the cross-section average velocity.
M95
(1) Display the positive and negative energy totalizers
(2) Upon entering this window, the circular display function will be started
automatically. The following windows will be displayed one by one, each window
will stay for 8 seconds: M95>>M00>>M01>>M02>>M02>>
M03>>M04>>M05>>M06>>M07>>M08>>M90>>M91>>M92>> M93>>
M94>>M95. This function allows the user to visit all the important information
without any manual action.
To stop this function, simply press a key. Or switch to a window other than M95.
M96 This is not a window but a command for the thermal printer to advance 5 lines of
paper.
M97
This is not a window but a command to print the pipe parameters.
By default, the produced data will be directed to the internal serial bus (thermal
printer). You can also direct those data to the serial communication port.
M98
This is not a window but a command to print the diagnostic information.
By default, the produced data will be directed to the internal serial bus (thermal
printer). You can also direct those data to the serial communication port.
M99
This is not a window but a command to copy the current display window. By
default, the produced data will be directed to the internal serial bus (thermal
printer). You can also direct those data to the serial communication port.
By use of the window copying function, you can hardcopy very window displaying
manually by switching windows, or you can obtain the window displaying data by
communication.
M+0 Browse the 32 recorded instrument power-on and power-off date and time with the
flow rate at the time of power on and off
M+1 Displays the total working time of the flow meter.
When the backup battery is removed, the total working time will be reset to zero.
M+2 Displays the last power-off date and time
M+3 Displays the last power-off flow rate
M+4 Displays how many times of has been powered on and powered off.
M+5
A scientific calculator for the convenience of field working.
All the values are in single accuracy.
The calculator can be used while the flow meter is conducting flow measurement.
Water density and PT100 temperature can also be found in this function.
M+6
Set fluid sound speed threshold
Whenever the estimated sound speed (displayed in M92) exceeds this threshold,
an alarms signal will be generated and can transmitted to BUZZER or OCT or
RELAY.

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14
This function can used to produce an alarm or output when fluid material changes.
M+7 Displays total flow for this month(only for the time past)
M+8 Displays total flow for this year(only for the time past)
M+9 Display the not-working total time in seconds. The total failure timer will also include
the time when power off, if the back-up battery is applied.
M.2 Entry to solidify the zero point. Password protected.
M.5
Setup the Q value threshold.
If the present Q is below this threshold, flow rate will be set to 0.
This function is useful when flow meter is installed in noisy environment or on airy
pipes.
M.8 The maximum flow rates for today and this month.
M.9 Serial port tester with CMM command output for very second.
M-0 Entry to hardware adjusting windows only for the manufacturer
M-1 4-20mA output adjustment
M-2 4mA calibration for AI3 input
M-3 20mA calibration for AI3 input
M-4 4mA calibration for AI4 input
M-5 20mA calibration for AI4 input
M-6 4mA calibration for AI5 input
M-7 20mA calibration for AI5 input
M-8 Lower Temperature Zero setup for the PT100
M-9 Higher Temperature Zero setup for the PT100
M-A Temperature Calibration at 50℃
M-B Temperature Calibration at 84.5℃
Note 1.windows in Red are new to our old version of flow meter
2. Windows in Blue are energy related windows
3. The term totalizer is also called accumulator.
4. Begin to mount and measure
4.1 Steps to Configure the Parameters
The following parameters need to be configured for a proper measurement:
(1) Pipe outer diameter
(2) Pipe wall thickness
(3) Pipe materials (for non-standard pipe materials*, the sound speed for the material must be configured
too)
*Standard pipe materials and standard liquids refer to those with the sound parameters that have
already been programmed into software of the flow meter, therefore there is no need to configure them
(4) Liner material and its sound speed and thickness, if there is any liner.

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15
(5) Liquid type (for non-standard liquids, the sound speed of the liquid is also needed)
(6) Transducer type adapted to the flow meter. Generally the Standard M1 clamp-on transducers will be
the selected option.
(7) Transducer mounting methods (the V-method or Z-method is the common option)
(8) Check up the Space displayed on M25 and install the transducers accordingly.
(9) Store the parameter setup
For standard pipe materials and standard liquids, the following detailed step-by-step setup is
recommended.
(1) Press keys MENU 1 1 to enter M11 window to input the digits for the pipe outer diameter, and
then press ENT key.
(2) Press key ▼/- to enter M12 window to input the digits for the pipe outer diameter and then press ENT
key.
(3) Press key ▼/- to enter M14 window, and press ENT key to enter the option selection mode. Use keys
▲/+ and ▼/- to scroll up and down to the intended pipe material, and then press ENT key.
(4) Press key ▼/- to enter M16 window, press ENT key to enter the option selection mode, use keys
▲/+ and ▼/- to scroll up and down to the liner material, and then press ENT key. Select “No Liner”, if
there is no liner.
(5) Press key ▼/- to enter M18 window, press ENT key to enter the liner thickness and then press ENT key
(if there is liner)
(6) Press key ▼/- to enter M20 window, press ENT key to enter the option selection mode, use keys ▲/+
and ▼/- to scroll up and down to the proper liquid, and then press ENT key.
(7) Press key ▼/- to enter M23 window, press ENT key to enter the option selection mode, use keys ▲/+
and ▼/- to scroll up and down to the proper transducer type, and then press ENT key.
(8) Press key ▼/- to enter M24 window, press ENT key to enter the option selection mode, use keys ▲/+
and ▼/- to scroll up and down to the proper transducer mounting method, and then press ENT key.
(9) Press key ▼/- to enter M25 window and check up the installation space.
(10) Press MENU 2 6 to store the parameter setup (refer to M26)
(11) Press MENU 9 0 to check up signal strength and quality, the bigger of the value the better.
Generally the signal strength should be better than 60.0, and signal quality should be better than 50.0.
(12) Press MENU 9 1 to check up time ratio, the ratio value should be in the range of 100±3%
(13) Press MENU 0 8 to check up the working status, “R” means work well
(14) Press MENU 0 1 to check up the measuring data.
Note: 1. For heat measurement, please connect PT100 which installed in water supply and water back pipe
to T1, TX1, T2, TX2, GND terminal.
2. After setting parameter, remember to store parameter in MENU 26, to avoid parameter lose after
turn off.
4.2 Transducers Mounting Allocation
The first step in the installation process is the selection of an optimum location in order to obtain a more
accurate measurement. For this to be completed effectively, a basic knowledge about the piping and its
plumbing system would be advisable.

TUF-2000F User Manual
An optimum location would be defined as a straight pipe length full of liquid that is to be measured. The
piping can be in vertical or horizontal position. The following table shows
16
Examples of optimum locations.
L up L dn
L up L dn
L up
L up
L dn
L dn
P i p i n g C o n f i g u r a t i o n
a n d
T r a n s d u c e r P o s i t i o n
U p s t r e a m
D i m e n s i o n
D o w n s t r e a m
D i m e n s i o n
L dn
x Diameters
L up
x Diameters
10D 5D
10D
10D
12D
20D
5D
5D
5D
5D
L upL dn
20D 5D
L up L dn
30D 5D
L up L dn
Principles to selection of an optimum location
(1) Install the transducers on a longer length of the straight pipe. The longer the better, and make sure that
the pipe is completely full of liquid.
(2) Make sure that the temperature on the location does not exceed the range for the transducers.
Generally speaking, the closer to the room temperature, the better.
(3) Take the pipe fouling into consideration. Select a straight length of a relatively newer pipe. If the
condition is not satisfying, consider the fouling thickness as part of the liner for a better result.
(4) Some pipes have a kind of plastic liner, and between the outer pipe and the liner there may be a certain
thickness difference that will prevent the ultrasonic waves from direct traveling. Such conditions will make
the measurement very difficult. Whenever possible, try to avoid this kind of pipes. If impossible, try our
plug-in transducers that are installed permanently on the pipe by drilling holes on the pipe while liquid is
running inside.

TUF-2000F User Manual
4.3 Transducers Installation
The transducers used by the TUF-2000 series ultrasonic flow meter are made of piezoelectric crystals both
for transmitting and receiving ultrasonic signals through the wall of liquid piping system. The measurement
is realized by measuring the traveling time difference of the ultrasonic signals. Since the difference is very
small, the spacing and the alignment of the transducers are critical factors to the accuracy of the
measurement and the performance of the system. Meticulous care should be taken for the installation of the
transducers.
Steps to the installation of the transducers
(1) Locate an optimum position where the straight pipe length is sufficient, and where pipes are in a
favorable condition, e.g., newer pipes with no rust and ease of operation.
(2) Clean any dust and rust. For a better result, polishing the pipe with a sander is strongly recommended.
(3) Apply adequate coupler to the spot where the transducers are to be installed and leave no gap between
the pipe surface and the transducers.
Extra care should be taken to avoid any sand or dust particles left between the pipe outer surface and the
transducers.
To avoid gas bubbles inside the upper part of the pipe, the transducers should be installed horizontally by
the side of the pipe.
4.3.1 Wiring diagram of transducer
4.3.2 Transducers Spacing
The spacing value shown on menu window M25 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.
4.3.3 V-method Installation
V-method installation is the most widely mode for daily measurement with pipe inner diameters ranging
from 15 mm to 200 mm. It is also called reflective mode.
17

TUF-2000F User Manual
4.3.4 Z-method Installation
Z-method is commonly used when the pipe diameter is above 200mm.
4.3.5 W-method Installation
W-method is usually used on plastic pipes with a diameter from 15mm to 50mm.
18

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4.3.6 N-method Installation
Rarely used method.
4.4 Installation Checkup
Through the checkup of the installation, one can: check the receiving signal strength, the signal quality Q
value, the traveling time difference of the signals, the estimated liquid speed, the measured traveling time of
the signals and the calculated traveling time ratio. Therefore, optimum measurement result and longer
running time of the instrument can be achieved.
4.4.1 Signal Strength
Signal strength indicates the amplitude of receiving ultrasonic signals by a 3-digit number. [00.0] means
there is no signal detected and [99.9] refers to the maximum signal strength that can be received.
Although the instrument works well if the signal strength ranges from 50.0 to 99.9, stronger signal strength
should be pursued, because a stronger signal means a better result. The following methods are
recommended to obtain stronger signals:
(1) Relocate a more favorable location, if the current location is not good enough for a stable and reliable
flow reading, or if the signal strength is lower than 60.0.
(2) Try to polish the outer surface of the pipe, and apply more coupler to increase the signal strength.
(3) Adjust the transducers both vertically and horizontally while checking the varying signal strength, stop at
the highest position, and then check the transducers spacing to make sure the transducers spacing is
the same as what the M25 shows.
4.4.2 Signal quality
Signal quality is indicated as the Q value in the instrument. A higher Q value would mean a higher Signal
and Noise Ratio (short for SNR), and accordingly a higher degree of accuracy would be achieved. Under
normal pipe condition, the Q value is in the range 60.0-90.0, the higher the better.
Causes for a lower Q value could be:
(1) Interference of other instruments and devices such as a powerful transverter working nearby. Try to
relocate the flow meter to a new place where the interference can be reduced.
(2) Bad sonic coupling for the transducers with the pipe. Try to apply more coupler or clean the surface,
etc.
(3) Pipes are difficult to be measured. Relocation is recommended.
4.4.3 Time Ratio between the Measured Total Transit Time and the Calculated Time

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This ratio would be used to check the transducer installation. If the pipe parameters are entered correctly
and the transducers are installed properly, the value for this ratio should be in the range of 100±3. If this
range is exceeded, the user should check:
(1) If the pipe parameters are correctly entered.
(2) If the actual spacing of the transducers is right and the same as what the window M25 shows.
(3) If the transducers are installed properly in the right directions.
(4) If the mounting location is good and if the pipe has changed shape or if there is too much fouling inside
the pipes
(5) Other poor condition
5. Communication Protocols
TUF-2000F has an isolated serial port, the RS485.
TUF-2000F can support more than 4 different communication protocols by the same time;
include MODBUS-ASCII, ASCII-RTU, Meter-BUS, the Fuji Extended Protocol and more than
10 compatible communication protocols used by Huizhongs flow meters.
MODBUS is a very commonly used industrial protocol. Both the RTU and the ASCII format of
MODBUS is supported
The Fuji Extended Protocol is developed based on the protocol used in a Japanese ultrasonic
flow meter. It is totally compatible with that of Version 7 flow meter.
TUF-2000F can be used as a sample RTU terminal. The 4-20mA output in the TUF-2000F
can be used to open an analog proportional valve; The OCT output can be used to control the
turn-on and turn-off of other devices such as a pump. The analog input can be used to input
pressure or temperatures signals.
There is a programmable device address (or ID number) located at window M46. When
TUF-2000F is used in a network, all the parameters of the flow meter can be programmed
through the network, except the device address that needs the keypad.
At most occasions, data should be obtained by polling the flow mete with a command, the flow
meter will respond with what the master asks.
TUF-2000F can also set to automatically output data at a period which is programmable.
The TUF-2000F also has a special command sets to facilitate the use of the flow meter in a
GSM network.
5.1 The MODBUS protocol
Both the two formats of the MODBUS protocol can be supported.
A software switch located at the window number 63(shorted as M63 after) select
MODBUS-ASCII or MODBUS-RTU will be in functioning.
The default option is MODBUS-ASCII format.
TUF-2000F can only support MODBUS functions code 3 and code 6, i.e. reading registers
and writing a register.