IO Thrifty FMT-25W User manual

FMT-25W Ultrasonic Flow Meter
User’s Guide
V1.1

Table of Contents
1 Product Models ...................................................................................................... 1
1.1 FMT-25 Meter Versions ......................................................................................... 1
1.2 Available Flow Transducers ................................................................................... 1
2 Check Components ................................................................................................. 2
3 Transducer Mounting Diagrams ............................................................................. 3
3.1 Mounting ............................................................................................................... 3
4 Meter Installation and Wiring Diagram .................................................................. 3
4.1 FMT-25W-AB Installation Instruction .................................................................... 3
4.2 FMT-25W-AB Wiring Diagram ............................................................................... 5
4.3 FMT-25W-AE Mounting ......................................................................................... 6
4.4 FMT-25W-AE Wiring Diagram ............................................................................... 6
5 Transducer Introduction and Wiring Diagram ....................................................... 8
5.1 Clamp Transducer .................................................................................................. 8
5.2 Clamp-on Transducer Wiring Diagram .................................................................. 8
5.3 Insertion Transducers ............................................................................................ 9
5.4 Inline Transducers ............................................................................................... 10
6 Display and Programming .................................................................................... 11
6.1 Display and Keyboard .......................................................................................... 11
6.2 Programming ....................................................................................................... 11
6.3 Program Menu Details ......................................................................................... 12
6.4 Quick Program Setup ........................................................................................... 23
7 Transducers Installation ....................................................................................... 24
7.1 Choose installation points ................................................................................... 24
7.2 Clamp-on Transducer Installation ....................................................................... 26
7.3 Insertion Transducer Installation ........................................................................ 29
7.4 In-line type transducer installation ..................................................................... 35
7.5 Checking the Installation ..................................................................................... 36
8 Complete the Installation ..................................................................................... 37
9 Specifications ........................................................................................................ 38

>>FMT-25W Ultrasonic Flow meter User Manual
1
The FMT-25W is a new generation ultrasonic flow meter manufactured using patented
technology which employs the transit-time principle to measure the velocity of relatively
clean liquids in full pipes.
The purpose of this guide is to provide installation procedures and basic operating
instructions for the FMT-25W.General Installation Procedure
1 Product Models
1.1 FMT-25 Meter Versions
Model No. FMT-25W-AB FMT-25W-AE
Picture
Description Wall Mount Flow Meter in
ABS Enclosure
Wall Mount Flow Meter in Cast
Aluminum Enclosure
1.2 Available Flow Transducers
Flow transducer Picture Model Pipe Size* Temperature
Clamp on
TS-2 (small) 1 to 4 inches
-30 ~ 90℃
TM-1 (medium) 2 to 28 inches
TL-1 (large) 12 to 240 inches
High temp.
Clamp on
TS-2-HT (small) 1 to 4 inches
-30 ~ 160
℃
TM-1-HT (medium) 2 to 28 inches
TL-1-HT (large) 12 to 240 inches
Check
Compon
ents
Choose In
stallation
Points
Set Parameter
Connection of Meter
and Transducer
T
ransduc
er Installation
Me
te
r
Insta
llat
io
n
Finished
Check the installation

>>FMT-25W Ultrasonic Flow meter User Manual
2
Insertion
TC-1 (standard) 2 to 235 inches -30 ~ 160
℃
TC-2 (extended)
TP-1 (parallel) 3 to 235 inches
Inline
Standard 0.5 to 40 inches -30 ~160
℃
Temperature
transducer
Picture Model Pipe Size Temperature Cutoff water
Clamp on
CT-1 2 to 235
inches
-40 ~ 160
℃
No need
Insertion
TCT-1 2 to 235
inches
-40 ~ 160
℃
Need
Insertion
under pressure
PCT-1 2 to 235
inches
-40 ~ 160
℃
No need
Insertion
small sizes
SCT-1
< 2 inches+
-40 ~ 160
℃
Need
*Pipe size given in DNx-y notation where DN is Diameter Nominal and x-y is the diameter
range in mm(eg. DN25-100 is used with pipe sizes with nominal diameter from 25 to 100
mm)
2 Check Components
1. Please check you have all the components in the order.
2. All codes on transducers should be matched as they are used in sets.

>>FMT-25W Ultrasonic Flow meter User Manual
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3 Transducer Mounting Diagrams
3.1 Mounting
Clamp on Insertion Inline
4 Meter Installation and Wiring Diagram
4.1 FMT-25W-AB Installation Instruction
(Dimensions in mm)

>>FMT-25W Ultrasonic Flow meter User Manual
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Wall mounting: Fix the converter with 4 Φ6mm expansion bolts or normal bolts.
DIN-rail mounting by using rail fixing clamps.
DIN-rail mounting by using PCB bracket
FMT-25W-AB type can be installed on a wall, in panel box or explosion-proof enclosure

>>FMT-25W Ultrasonic Flow meter User Manual
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4.2 FMT-25W-AB Wiring Diagram

>>FMT-25W Ultrasonic Flow meter User Manual
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4.3 FMT-25W-AE Mounting
4.4 FMT-25W-AE Wiring Diagram
Dimensions in mm

>>FMT-25W Ultrasonic Flow meter User Manual
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>>FMT-25W Ultrasonic Flow meter User Manual
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5 Transducer Introduction and Wiring Diagram
5.1 Clamp Transducer
5.2 Clamp-on Transducer Wiring Diagram

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5.3 Insertion Transducers
Insertion Transducer Overview
Insertion Transducers Wiring Diagram

>>FMT-25W Ultrasonic Flow meter User Manual
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5.4 Inline Transducers
Inline Transducer Wiring Diagram

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6 Display and Programming
6.1 Display and Keyboard
Display is 2×20 characters LCD with backlight, available to set backlight time and contrast.
16-key Keyboard
6.2 Programming
The user interface of this flow meter comprises of over 100 different menu windows that
are numbered M00, M01, M02 … M99. To enter a menu: Press the MENU key first,
followed by the two-digit menu number. For example to enter menu item M35, press
MENU 3 5.
To move between the adjacent menus, press ▲/+ and ▼/- keys.
Note: Some menu items are accessed by pressing non-numeric keys. For example to view
the window for “last power off flow rate” as shown in table 6.3 as M+3, you would enter
MENU + 3.
0 - 9 and . are used for inputting numbers or menu numbers.
◄ is used for back left or delete the last character.
▲/+ and ▼/- are used for entering into the last and next
menu. It also can be used as ± sign when inputting numbers.
MENUis used for accessing the menu. Press this key first,
then type the number keys to enter into the matched menu.
ENTis the ENTER key, used for confirming the contents
you input or choose.

>>FMT-25W Ultrasonic Flow meter User Manual
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6.3 Program Menu Details
Menu No. Function
M00
Display flow rate and NET totalizer.
If the net totalizer is turned off(refer to M34), 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 flow rate and POS(positive) totalizer.
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 5 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 perimeter 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)

>>FMT-25W Ultrasonic Flow meter User Manual
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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:
None, No liner (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 (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 medium size) 1. Insertion Type C
2. Standard-S 3. User Type 4. Standard B
5. Insertion Type B(45) 6. Standard-L (The large size transducers)
7. JH-Polysonics 8. Standard-HS (small size transducer for H
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 (medium size transducer for FMT-25W)
17. Insertion TC-1 (for Taosonic Instrument)
18. Calmp-on TS-1 (small size transducer for FMT-25W)
19. Clamp-on TS-1
20. Clamp-on TL-1 (large size transducer for FMT-25W )
21. Insertion TLC-2 (For Taosonics ) 22. Clamp-on M2 23. Clamp-on L2

>>FMT-25W Ultrasonic Flow meter User Manual
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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
(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. Cubic meter short for (m3)
1. Liter (l)
2. USA gallon (gal)
3. Imperial Gallon (igl)
4. Million USA gallon (mgl)
5. Cubic feet (cf)
6. USA liquid barrel (bal)
7. Oil barrel (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

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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
Language selection.
The selection could also be changed automatically by the system, if English LCD
display is used as the display device.
M3A
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 from 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

>>FMT-25W Ultrasonic Flow meter User Manual
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M51
Window to setup the time of the scheduled output function (data logger, or
Thermo-printer). This includes start time, time interval and the number of outputs.
When a number great than 8000 is entered for the times of output, It means the
output will be continuous. 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:
(0) 4-20mA output mode (setup the output range from 4-20mA)
(1) 0-20mA output mode (setup the output range from 0-20mA, This mode can only
be used with Version-15 flow meter)
(2) RS232 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
See Appendix B for more details on the output
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 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 (1).

>>FMT-25W Ultrasonic Flow meter User Manual
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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.
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.

>>FMT-25W Ultrasonic Flow meter User Manual
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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. 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 Controller 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 viaRS485 18.Daily Timer (M51) 19.Timed alarm #1
20. Timed alarm #2 21.Batch Total Full 22. Timer by M51
23. Batch 90% Full 24. 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 Controller 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 viaRS485
18. Daily Timer (M51) 19.Timed alarm #1
20. Timed alarm #2 21.Batch Total Full 22.Timer by M51
23.Batch 90% Full 24.Flow Rate Pulse 25.Disable OCT
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.
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