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TGF450
User Manual
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Nitto TGF450 User Manual

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User’s Manual Rev1.0
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TGF450 Series
Thermal Mass Flowmeter
User’s Manual
Nitto Instruments Co.,Ltd Japan
Hefei Comate Intelligent Sensor Technology Co,. Ltd
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Dear Customer:
Thanks for choosing our flowmeter products. Please read this manual carefully to know how to install and use this product to ensure its best performance. If you should encounter a problem when using the product, please do not hesitate to let us know. We are going to take no responsibility if the flowmeter is damaged because of anyone repair or replace any parts of it with our permission.
Support
Please reach to us according to the contact information below to get support or update of our VFM60 vortex flowmeter:
z Website
http://www.comatemeter.com
z Telphone：
+86-0551-63653542
z E-mail:
supports@ comatemeter.com
Place an order
If you need to place an order or need to know the status of your processing orders, please contact us according to below information:
Phone: +86-0551-63653542 Website: www.comatemeter.com Email: sales@comatemter.com Address：2nd floor, Building D2, Hefei Innovation Industrial Park,No.800 Wangjiang West Road,Hefei Tech Development Zone, Hefei, China Postal code：230088
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TABLEOFCONTENTS
SUPPORT.........................................................................................................................................2
PLACEANORDER............................................................................................................................2
1GENERAL......................................................................................................................................6
1.1MODELNUMBERANDGENERALSPECIFICATION.........................................................................6
1.2PACKINGLIST.............................................................................................................................6
1.3STORAGE...................................................................................................................................6
1.4MEASURINGPRINCIPLE..............................................................................................................6
2INSTALL........................................................................................................................................7
2.1FINDMOSTSUITABLELOCATION................................................................................................7
2.2REQUIREMENTONSTRAIGHTPIPELINE.....................................................................................8
2.3REQUIREMENTONINSERTIONDIRECTION.................................................................................9
2.4PROCEDUREOFINSTALLATION.................................................................................................10
9)INSERTTHEMETERTOTHEDEPTHSASCALCULATEDWITHTHEHOTTAP MOUNTINGTOOL.
(PLEASEREFERENCETOTHEMANUALOFHOTTAPMOUNTINGFORDETAILS).NOWHOLDTHE
SLEEVE(PARTNO.3)WITHAWRENCHANDTIGHENTHENUT(PARTNO.4)WITHANOTHERWRENCH.
MAKESURETHENUTSLEEVEISHOLDINGTHEMETERTIGHTENL
Y..................................................13
3WIRING......................................................................................................................................13
3.1WIRINGFORTERMINALBOARD...............................................................................................14
3.2SHELLGROUNDINGANDELIMINATIONOFINTERFERENCE........................................................15
3.4REQUIREMENTONWIRING......................................................................................................15
4DISPLAY......................................................................................................................................16
4.1INTRUCTIONOFMULTI‐FUNCTIONALLCDDISPLAY...................................................................16
4.2UNITOFTHEVARIABLEDISPLAYED...........................................................................................17
4.3THREEBUTTONSETTING..........................................................................................................18
4.4TOTALFLOWDISPLAYING.........................................................................................................18
4.5STATUS....................................................................................................................................19
5SETTING.....................................................................................................................................19
5.1HOWTOSET............................................................................................................................19
5.1.1CODESETTING......................................................................................................................19
5.1.2DIGITALSETTING...................................................................................................................20
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5.2SETTINGLIST............................................................................................................................ 22
CHART5.1CODESETTINGADDRESS...............................................................................................22
CHART5.2DIGITSSETTINGADDRESS..............................................................................................25
5.3EXAMPLEOFSETTING..............................................................................................................26
5.4PA SSWORDSETTINGINSTRUCTION..........................................................................................26
6INSTRUCTIONOFRS485MODBUSCOMMUNICATION.................................................................27
6.1INTERFACEREGULATION..........................................................................................................27
6.2COMMENDS............................................................................................................................29
6.3CALCULATIONOFCRCPAR I T YCODE.........................................................................................31
6.4THEFLOATDATEFORMATOFTHEINSTRUMENT.......................................................................31
6.5THESEQUENCEOFTHEFLOATDA TEBYTESOFINSTRUMENT.....................................................32
6.6MODBUSERRORREPONSE.......................................................................................................32
6.7EXAMPLESOFCOMMUNICATION.............................................................................................33
7INTRODUCTIONOFHARTCOMMUNICATIONPROTOCOL.............................................................33
7.1HARTCOMMANDS...................................................................................................................33
7.1.1COMMAND0:READTRANSMITTERUNIQUEIDENTIFIER........................................................34
7.1.2COMMAND1:READPRIMARYVARIABLEVALU E(PV).............................................................34
7.1.3COMMAND2:READPRIMARYVARIABLE’SCURRENTANDPERCENTAGEVALUE......................34
7.1.4COMMAND3:READPRIMARYVARIABLECURRENTANDDYNAMICVARIABLES......................35
7.1.5COMMAND6:WRITEPOLLINGADDRESS...............................................................................35
7.1.6COMMAND11:READUNIQUEIDENTIFIERASSOCIA TEDWITHTAG.........................................36
7.1.7COMMAND12:READMESSAGE.............................................................................................36
7.1.8COMMAND13:READTAG, DESCRIPTOR,DATE......................................................................36
7.1.9COMMAND14:READPRIMARYVARIABLESENSORINFORMATION:DEVICESERIALNUMBER
ANDLIMITS...................................................................................................................................37
7.1.10COMMAND15:READPRIMARYVARIABLEOUTPUTINFORMATION......................................37
7.1.11COMMAND16:READFINALASSEMBLYNUMBER.................................................................37
7.1.12COMMAND17:WRITEMESSAGE.........................................................................................38
7.1.13COMMAND18:WRITETAG , DESCRIPTOR,DA TE...................................................................38
7.1.14COMMAND19:WRITEFINALASSEMBLYNUMBER...............................................................38
7.1.15COMMAND34:WRITEPRIMARYVARIABLE DAMPINGVALUE..............................................39
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7.1.16COMMAND35:WRITEPRIMARYVARIABLE RANGEVALUES.................................................39
7.1.17COMMAND36:WRITEPRIMARYVARI ABLEUPPERLIMITVALUE..........................................39
7.1.18COMMAND37:WRITEPRIMARYVARIAB LELOWERLIMITVALUE .........................................40
7.1.19COMMAND40:ENTER/EXITPRIMARYVARIABLECURRENTMODE.......................................40
7.1.20COMMAND45:TRIMPRIMARYVARIABLECURRENTDACZERO............................................40
7.1.21COMMAND46:TRIMPRIMARYVARIABLECURRENTDACGAIN............................................41
8MAINTAINING.............................................................................................................................41
8.1HOWTOCHANGETHETRANSMITTER’SDIRECTION..................................................................41
8.2REPLACEATRANSMITTERCIRCUITBOARDS.............................................................................42
8.3REMOVETHEFLOWMETER......................................................................................................42
8.4HOWTOCLEANTHESENSORS..................................................................................................43
9TROUBLESHOOTINGANDREPAIR................................................................................................43
9.1SAFTYINTRODUCTION.............................................................................................................43
9.2TROUBLESHOOTINGANDREPAIR.............................................................................................43
9.3SELF‐DIAGNOSEFUNCTION......................................................................................................45
10REMARK...................................................................................................................................45
APPENDIX.....................................................................................................................................46
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1 General
Every TGF450 thermal mass flowmeter will be carefully inspected before delivered to users. Please carefully check if there is any damage on the package and product when you received them Please check if the package contains all the accessories according to 1.2 or your purchase order. Please make sure the person in charge of this device has carefully read this manual and understand its
descriptions.
1.1 Model Number and General Specification
Please check if the model number and specifications on the name plate match your requirement on the purchase order.
Please kindly record the model number and instrument ID code, which will be required if you need and service or support from us.
1.2 Packing List
When you recived the package, please check if it contains the items as below:
TGF450 thermal mass flowmeter x1 User’s manual x1 Calibration certificate x1 Quality certificate x1 Cable (For remote type only, length according to customer’s requirement) Counter flanges (For wafer type, or for flanged type when customer requied so) Screws and bolt (For wafer type, or for flanged type when customer requied so)
1.3 Storage
If the product needs to be stored for a long period before use, please be awared of below: (1) The product should be kept in the origin package and same as it was when received. (2) Please store the product in a proper location according to the requirements below:
Not in a uncovered field. Not in a location where could have great vibration. Please keep the enclosure of the meter closed. The ambient temperature, atmospheric pressure and humidity should be:
Temperature:
-20~ +60℃；RH： 5%~99% ；Pressure：86~106Kpa
1.4 Measuring principle
TGF450 Series Thermal Mass Flowmeter measures gas mass flow base on thermal diffusion theory and thermal
principle of Newton , It have two RTD sensor (ref to picture 1.2) located in the flow. One RTD is heated to T1 by a
heating power rate of P, the other is not heated but to measure the medium temperature T2. So there is a
temperature difference T
D
=T1-T2 . TD reach max when mass flow is 0. When the mass flow Q increases, the heat
on T1 is taken away so the T1 decline and the T
D
become smaller. So there is a certain relationship between
heating power rate P, difference of temperature T
D
and mass flow Q as below:
P/ TD = K1 + K2 F(Q)
K3
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Picture 1.2 Principle
The K1,K2 and K3 in above equation is constant related to the character of medium . So the mass flow Q can be
get through measuring the heating power rate P and difference of temperature T
D
. In actual application, there are two different method, one is consistent current method (keep the P unchanged) and the other is consistent temperature method (keep T
D
unchanged)
2 Install
2.1 Find Most Suitable Location
2.1.1 Ambient temperature
Please avoid installing the flowmeter at a location where temperature could dramaticly changes. If the
meter is under heavy heat radiation, please implement effective heat insulation and venting method.
2.1.2 Atomosphere
Please do not install the meter at a locaition where the atomosphere contains a high level of corrosive substance. If can not install the meter at a better location, please make sure there is enough venting.
2.1.3 Vibration
The meter should not be installed at a location where could have strong vibration. If the mounting pipeline could have heavy vibration, the pipe line should be holden steady by some supporting racks.
2.1.4 Caution
(a) All screws and bolts should be tighen. (b) Make sure there is not leakage point on the connection. (c) The process pressure should not be higher than the meter’s rated pressure. (d) Once the meter is under pressure, please do not screw the bolts and screws. (e) When measuring harzad gas, do not breath the gas in (f) If the meter is insertion mounted, please the outer of the connection part should be sealed with
proper sealant. (g) If the meter is insertion mounted,
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2.2 Requirement on straight pipe line
Standard
Curved pipe line in the upstream or downstream
Curved pipe line that may creat turbulence in the upstream or downstream
There are valves or pressure controller or any other device may cause turbulence in upstream or down stream of the flowmeter
If the pipeline of the flowmeter is upsized
If the pipeline of the flowmeter is downsized
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2.3 Requirement on insertion direction
On a horizontal pipe line, normal air or gas
Above or under the pipeline Side of the pipe line
On a horizontal pipe line, high humidity air or wet natural gas.
45 degree under the pipe line or just under the pipelien
On the side of the pipe. Do not recommend to install the meter above the
pipeline
On a vertical pipeline, when the density of the gas is higher than air
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2.4 Procedure of installation
2.4.1 Nut sleeve insertion (No flow in pipeline)
1) Drill a hole on the position where the meter will be installed, Ø 13mm （± 0.5 mm）
2) Clean the burrs and sharps on where will be welded
3) Weld the MNPT 1/2” socket (Part No.1) on the open hole vertically. The socket and the open hole should be concentric, and vertical to the center line of the pipe line
4) Connect the 1/2” ball valve (Part No.2) with FNPT threads on both ends to the socket. Seal the thread connection with thread sealant. Please note the lever on the ball valve should be point to up when the valve is open
5) Insert the flowmeter into the ball valve and the socket, connect the sleeve (Part No.3) on the meter and the ball valve, seal the thread conection part with thread sealant. Tighten the nut (Part No.4) with hand.
6) Calculate the insertion depth. The sensor should be in the middle of the pipe area, insertion depth S=A/2+B+C. Please reference to the picture below
A: Inner diameter of the pipeline B: Thickness of the pipe line C: The distance between the top of the pipeline and the upper end of the nut when the nut is fixed
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7) Adjust the direction of the flowmeter: Make sure the derection mark on the probe (Part No.5) is pointing to the direction as the flow goes. Please reference to the picture below.
8) Insert the flowmeter to the depth S as calculated previous, now hold the sleeve (Part No.3) with a wrench and tighen the nut (Part No.4) with another wrench. Make sure the nut sleeve is holding the meter tightenly.
Remark: If flow rate higher than 90Nm/s or pipe size larger than DN400, will require 19mm diameter probe, mounted in 1” ball valve and 1” socket and 22mm hole
2.4.2 Nut sleeve insertion (flow and pressure in pipeline)
1)
Weld the MNPT 1/2” socket (Part No.1) on the pipeline vertically. The socket should be vertical to
the center lin
e of the pipe line
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2) Connect the 1/2” ball valve (Part No.2) with FNPT threads on both ends to the socket. Seal the
thread connection with thread sealant. Please note the lever on the ball valve should be point to up when the valve is open.
3) Drill a hole with the hot tap hole opener, Ø 13mm (± 0.5 mm). (Please reference to the manual of hot tap mounting for details)
4) Make sure the senor of the meter is with in the sleeve on the flowmeter, so the sleeve can protect the sensor.
5) Connect the sleeve with the ball valve with the thread, please seal the 1/2” NPT thread connection with thread sealant, (the ball valve should be closed)
6)
Calculate the insertion depth. The sensor should be in the middle of the pipe area, insertion
depth S=A/2+B+C. Please reference to the picture below A: Inner diameter of the pipeline B: Thickness of the pipe line C: The distance between the top of the pipeline and the upper end of the nut when the nut is fixed
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7) Adjust the direction of the flowmeter: Make sure the derection mark on the probe (Part No.5) is
pointing to the direction as the flow goes. Please reference to the picture below.
8) Open the ball valve, please make sure that procedure 1~7 is operated properly before opening the ball valve. The sleeve should be connected to the ball valve tightenly that the meter can not be ejected out.
9) Insert the meter to the depth S as calculated with the hot tap mounting tool. (Please reference to the manual of hot tap mounting for details).
Now hold the sleeve (Part No.3) with a wrench and tighen
the nut (Part No.4) with another wrench. Make sure the nut sleeve is holding the meter tightenly.
Remark: If flow rate higher than 90Nm/s or pipe size larger than DN400, will require 19mm diameter probe, mounted in 1” ball valve and 1” socket and 22mm hole
3 Wiring
The terminal board of TGF450 is as picture 3.1 below
Picture 3.1 TGF450 terminal board
On above board, V+ and V- are for power, the DC power should be within 15VDC~32VDC.
is pulse output terminal. A, B are “+” and “-” for RS485Modbus communication, I+ and I- are +
and – for 3-wire or 4-wire 4~20 mA. P+,P- are for pressure transmitter .
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3.1 Wiring for terminal board
3.1.1 Wiringfor 3-wire pulse output
TGF450 use a current pulse output with 50% duty ratio. If the pulse reciving instrument require
voltate pulse, please add a resistor between “
” and “V-”, the resistance should be within
500ohms~1000ohms, and power consumption should be no less than 0.5W.
Picture 3.2 Wiring of TGF450 3-wire pulse output
3.1.2 Wiringfor 3-wire HART@4~20mA
V-
BAI+
I- P+
P+
V+
Picture 3.3 Wiring of TGF450 3-wire HART@4~20mA
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3.1.3 Wiringfor 3-wire HART@4~20mA
V-
BAI+
I- P+
P+
V+
24V DC
Picture 3.4 Wiring of TGF450 4-wire HART@4~20mA
3.1.4 Wiring for RS485
V-
BAI+
I- P+
P+
V+
Picture 3.5 Wiring of TGF450 RS485
3.2 Shell grounding and elimination of interference
In TGF450 thermal mass flowmeter the power supply of signal processing circuit is transferred from
outside power supply by a isolation type DC-DC transmitter with advanced grounding technology . The field frequency interference can be isolated well.
When using this product , the “V-” of power supplier should not be connected with the ground .When
this product is used in a environment with strong interference , the shell should be clean connected with earth through cable , so the interference can be eliminated .
3.4 Requirement on wiring
1) Please do not conduct wiring when the power is on in a explosive environment.
2) Please open the rear cover first, then inert the cable into back zone of housing thourgh the water-proof cable gland.
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3) Conduct wiring according to 3.2.
4) If possible, please conduct the wiring according to picture 3.6 to avoid the water get into the housing through the cable.
Picture 3.6 Wiring instruction
4 Display
TGF450 thermal mass flow meter provide with local display and setting. Users can display several variables on the local multi-funcational LCD display. The transmitter also has 3 buttons so users can do setting on it.
4.1 Intruction of multi-functional LCD display
TGF450 thermal mass flow meter has a display to indicate “Temperature” “Flow rate” “Total flow”
and more parameters. Please reference to picture 4.1 below.
Pitcure 4.1 TGF450 display
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The LCD display has 2 areas to display the content, the upper row, the lower row. The upper row displays the flow rate/mass flow/standard flow rate. Below the upper row shows the unit of the variable displayed in upper row.
The lower row display indicates other variables, such as temperature/ pressure/ total flow/ density. And below the lower row shows the unit of the variable displayed in lower row.
Please reference to picture 4.2 for display
Picture 4.2 Flow rate and total flow display
TGF450 multi-varibale version can also display temperature. Users can switch the parameter displayed by using the buttons and the parameter will be displayed for 30 seconds. Please reference to picture 4.3 for mass flow and temperature displaying. Users can also fix the lower row to display a parameter consistently.
Picture 4.3 Mass flow and temperature display
You can also set the lower row to display several variables in circular turn.
4.2 Unit of the variable displayed
The variables that can be displayed in lower row and their units that can be displayed are as the chart
4.4 below.
Subject Variable Unit Circular display code
TOTAL
Total flow
N
3
m
,
3
m
,L,kg or t
01
Temperature ℃ 02
Pressure MPa or kPa 03
Frequency Hz 04
Density
kg/
3
m
05
Chart 4.4 The displayed units
Remark: Clients can select the unit, pressure need separate pressure sensor
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4.3 Three button setting
TGF450 series thermal mass flowmeter has three buttons on the top of the displayer, which are:
↔
(will be mentioned as “L-R button” below), b (will be mentioned as “U-D button”
below), (will be mentioned as “Enter button” below). Please reference to below picture
Picture 4.5 buttons
When under working, use “U-D button” to switch the displaying content, use “L-R button” can switch to the left and right digits of total flow. “Enter button” is to dispay the entire digits of total flow directly.
When the flowmeter is under setting mold, the “L-R button” means move to left and right to select the digit, the “U-D button” means to set the digit to a number, the “Enter button” means “confirm”. All the “Digital setting” and “Code setting” of VFM series vortex flowmeter is made through these 3 buttons. Please reference to related article for details.
4.4 Total flow displaying
TGF450 can display the total flow with 9 digits left to decimal point and 3 digits right to it.When there is more than six digits, the total flow reading will be displayed in two times. One time displays the right digits and the other displays the left digits. You can use the “L-R button” to switch between the right digits and left digits. The left digits will be displayed with a mark of “x1000”. Please reference to picture 4.6
Picture 4.6 Displaying the left digits, a “x1000” mark is displayed
If you want to check the right digits now, please pressure the “L-R button”, the display will be as picture 4.7 below.
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Picture 4.7 Displaying the right digits
According to picture 4.6 and 4.7, the total flow is 569864.581 kg.
4.5 Status
TGF450 series thermal mass flowmeter have three different statuses as below
Working status
Setting status
Calibration status
When under working status,please follow the instruction in 4.1 to switch the parameter displayed.
When under setting status, you can set the flowmeter, while the flowmeter is still processing, so setting will not have effect on the measuring. In next chapter, there will be instruction of how to do setting.
The calibration of the flowmeter have been finished in manufacture’s lab before delivery, including temperature and pressure calibration if required and the setting of high-limit and low-limit of 4~20mA stimulation output. Thus customers do not to set any more.
5 Setting
Note: Every TGF450 thermal mass flowmeters has been set according to requirement before delivery, please do not change setting unless it is necessary and under correct instruction!
TGF450 thermal mass flowmeter have digital setting and code setting. Use code setting to set parameters such as damping and output signal. Use digital setting to set parameters related to a number, such as pipe size, flow range, factor.
5.1 How to set
5.1.1 Code setting
Under working status, to enter code setting, please hold “Enter button” then press “U-D button” at the same time. Please reference to picture 5.1.
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Picture 5.1 enter and quit code setting
When in code setting, the first row will display the reference number of the code setting, and the
lower row will display the contents of this parameter. The digit that is flashing is the digit under setting. Please reference to picture 5.2, which means C01=02, that is set the pre-heating time to 2 seconds.
Picture 5.2 code setting
When under code setting, Now ,user can use “L-R button” to choose which digit on the displayer
are to be set , and use “R-D button” to switch the digit to 0~9 . The first time of pressing “Enter button” means to set the lower row, when under this situation, users can still use “L-R button” or “U-D button” to set. Press “Enter button” again to check if the setting is available. If setting is available, the display will not flash, when user can still press “L-R button” or “U-D button” to set again. When display is not flashing, pressure “Enter button” to save and go to next setting.
If want to quit code setting, same as entering, please hold “Enter button” then press “U-D button”
at the same time.
5.1.2 Digital setting
Under working status, to enter code setting, please hold “Enter button” then press “L-R button” at the same time. Please reference to picture 5.3.
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Picture 5.3 Picture Enter or quit digital setting
When in digital setting, the first row will display the reference number of the digital setting, and
the lower row will display the contents of this parameter. The digit that is flashing is the digit under setting. Please reference to picture 5.4., which means D001=1.60000, Max flow is 1.6 (unit according to other setting.)
Picture 5.4 digital setting
When under digital setting,, user can use “L-R button” to choose which digit on the displayer are
to be set , and use “R-D button” to switch the digit to 0~9. The first time of pressing “Enter button” means to set the lower row, when under this situation, users can still use “L-R button” or “U-D button” to set. Press “Enter button” again to check if the setting is available. If setting is available, the display will not flash, when user can still press “L-R button” or “U-D button” to set again. When display is not flashing, pressure “Enter button” to save and go to next setting.
If want to quit code setting, same as entering, please hold “Enter button” then press “U-D button”
at the same time.
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5.2 Setting list
Please check chart 5.1 and 5.2 for code and digital setting address list.
Chart 5.1 Code setting address
Code setting
address
Item Code Description of code
C01 Start up time 01~99 Set the start up time within 1~99 seconds
C02 Density type
00 Display standard volume flow rate
01 Density preset, display mass flow
02 Display actual flow rate
C03 Pulse output type
00 pulse output off
01 Frequency output
02 Pulse equivalent output
C06
Pulse output
parameter
00 Flow rate
01 Temperature
02 Pressure
03 Total flow
C07 Damping 01~16 1~16 seconds
C08 Instrument number
00~99 For Modbus
00~15 For HART communication
C09 Baud rate
1 1200 no parity 1 stop bit
2 1200 even parity 1 stop bit
3 2400 no parity 1 stop bit
4 2400 even parity 1 stop bit
5 4800 no parity 1 stop bit
6 4800 even parity 1 stop bit
7 9600 no parity 1 stop bit
8 9600 even parity 1 stop bit
9 19200 no parity 1 stop bit
10 19200 even parity 1 stop bit
11 1200 odd parity 1 stop bit
12 2400 odd parity 1 stop bit
13 4800 odd parity 1 stop bit
14 9600 odd parity 1 stop bit
15 19200 odd parity 1 stop bit
16 38400 no parity 1 stop bit
17 38400 even parity 1 stop bit
18 38400 odd parity 1 stop bit
19 57600 no parity 1 stop bit
20 57600 even parity 1 stop bit
21 57600 odd parity 1 stop bit
22 115200 no parity 1 stop bit
23 115200 even parity 1 stop bit
24 115200 odd parity 1 stop bit
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Code setting
address
Item Code Description of code
C10
Time unit for flow
rate
00 /s
01 /min
02 /h
C11 Mass unit
00 kg
01 ton
02 lb
C12
Volume unit for flow
rate
00 Standard cubic meter
01 Cubic meter
02 Standard litre
03 Litre
04 Standard Cubic feet
05 Gallon
06 Imperial gallon
C13 Pressure unit
00 Kpa (Absolute pressure)
01 Kpa (Gauge pressure,minus sign for negative pressure )
02 Kpa (Gauge pressure)
03 Mpa (Absolute pressure)
04 Mpa (Gauge pressure,minus sign for negative pressure )
05 Mpa (Gauge pressure)
06 PSI (Absolute pressure)
07 PSI (Gauge pressure,minus sign for negative pressure )
08 PSI (Gauge pressure)
09 Bar (Absolute pressure)
10 Bar (Gauge pressure,minus sign for negative pressure )
11 Bar (Gauge pressure)
C14 Temperature unit
00 ℃
01 ℉
02 K
C15
Right digits number
for total flow
00~05
00：No right digits for total flow
01~05：1~5 right digits for total flow
C25 Password for setting
00 Password protection off
01 Password protection on
C26 Fixed max flow
00 Fixed max flow off
011
Fixed max flow on. (If the flow rate measured is over the
setting of D039, the display will show the reading as D039)
C31
Time space for circle
display
00~30
00：circle display off
1~30：1~30 seconds between the display of different
parameter
C32
First paratmeter
displayed in circle
display
00~05
00：circle display off
01~05：see chart 4.1
C33
Second paratmeter displayed in circle
display
00~05
00：circle display off
01~05：see chart 4.1
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Code setting
address
Item Code Description of code
C36
Last paratmeter
displayed in circle
display
00~05 Same as above
C40
The date sequence of
IEEE formate float of
Modbus
01
Lower 16bits address in front, the lower 8bits in the 16bits
address in front
02
Higher 16bits address in front, the Higher 8bits in the
16bits address in front
03
Lower 16bits address in front, the higher 8bits in the 16bits
address in front
04
Higher 16bits address in front, the lower 8bits in the 16bits
address in front
C41 Shape of pipeline
00 Round pipeline(D:D010)
01 Rectangel pipeline(L:D018 W:D019)
C47 Set password
00 Keep the password
01 Change the pass word
C49 Status
00 Working status
01 4~20mA output calibration statues
02 Flow rate calibration statues
03 Temperature calibration statues
04 Pressure calibration statues
C50 Total flow reset
00 Reset total flow to 0
01 Default
C60
Restore to backup
date
06 Restore to backup date
C61 Save setting backup 16 Save current setting for backup
C80
Version No. of
hardware
Read Only
C81
Version No. of
software
Read Only
C82 Calibration date Read Only
C83 Number of errors Read Only
C84
Version No. of
HART
Read Only
C86
Communication
interface
00 Modbus Read Only
01 Hart Read Only
C87 Pressure sensor type
00 No pressure sensor Read Only
01 Piezo Read Only
02 Piezo Read Only
03 4~20mA Read Only
04 0~10mA Read Only
C88 Product ID No. Read Only
Note:
1) If the unit of flow rate is changed or measurement changed from flow rate to mass flow, users can reset the total flow to 0 or record the current total flow, as the number of total flow will not change according to unit.
2) Total flow can only be output by pulse, temperature and pressure can only be output by frequency
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Chart 5.2 Digits settingaddress
Code
setting
address
Item Code Description of code
D001 Max flow rate
[-99999，999999]
Unit is same as flow rate,Max/min flow rate
of 4~20mA and 200~1000Hz output
D002 Min flow rate
[-99999，999999]
D003
Max frequency
output
0.5~10000
The frequency output of max flow, unit is
Hz
D004
Min frequency
output
0.5~10000
The frequency output of min flow, unit is
Hz
D005 Cut off small signal
[-99999，999999]
Unit is same as flow rate
D008 K factor 0~999999
D009 Density 0~999999 Unit is Kg/m³
D010 Pipe size 0~9999999 Unit is mm
D011
Max temperature
(Unit as set in C14）
-99999~999999
The max frequency when temperature is
output by frequency, 1000Hz for instance.
The max current when temperature is
output by current, 20mA for instance.
D012
Min temperature
(Unit as set in C14）
-99999~999999
The min frequency when temperature is
output by frequency, 200Hz for instance.
The min current when temperature is output
by current, 4mA for instance.
D013
Max pressure (Unit
as set in C13）
-99999~999999
The max frequency when temperature is
output by frequency, 1000Hz for instance.
The max current when temperature is
output by current, 20mA for instance.
D014
Min pressure (Unit
as set in C13）
-99999~999999
The min frequency when temperature is
output by frequency, 200Hz for instance.
The min current when temperature is output
by current, 4mA for instance.
D015 Ambiant pressure 0~999999 Unit according to setting
D017
Equivalent of pulse
output
0~999999
Set the equivalent that one pulse output
stands for.Unit as C06
D018
Length of rectangle
pipeline
0~999999 Unit is mm
D019
Width of rectangle
pipeline
0~999999 Unit is mm
D030
Temperature of
standard condition
0~20
Default temperature of standard condition is
20 degree C
D033 Reference flow rate 0~999999
When measured flow rate is over calibrated
max flow, will display/output the reference
flow rate
Note:
1) When setting the max or min of pressure, please take consideration of gauge pressure or absolute pressure, if the pressure sensor is outputting gauge pressure, please set D015 the ambient pressure to get correct pressure reading.
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5.3 Example of setting
Sample: For insertiong connecting, measure air in DN150 pipe, density preset, unit displayed in kg/hr, flow range of 0~4000kg/hr, 200~1000Hz output
Code setting
Address Code
D
escription
C02 01 Density preset
C03 01 Frequency output
C06 00 Output parameter is flow rate
Digital setting
D009
1.2930
D
ensity=1.293 ,air
D008
1.000
F
actor =1
D001
5000
The flow rate for 1000Hz output
D002
0
The flow rate for 200Hz output
D010
150
P
ipe size=150mm
D003
1000
M
ax output frequency
D004
200
M
in output frequency
5.4 Password setting instruction
There is no password set in default in a new TGF450 thermal mass flowmeter ,users can set a
password following instruction below.
Enter code setting, set C47=01, confirm and quit then enter the password setting ineterface as
picture 5.5
Picture 5.5 Password setting interface
To set a new password, users have to input the correct password twice, the password will become effective only if the both inputs are the same; or users have to input again. If the power is off during a password setting process, the password will be 0000 as default. When a password becomes effective, users have to input the correct password before he can set the flowmeter, please reference to picture 5.6. If users input incorrect password 3 times consistently, the display will come back to normal display
Picture 5.6 Password input
SPC
0000
SPI
0000
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If a password has been set to a TGF450 thermal mass flowmeter, users can enter code setting C47=01 to set a new password.
6 Instruction of RS485 Modbus Communication
6.1 Interface regulation
The communication interface should be RS485, the range of Baud rate should be 1200~115200.
The wiring terminal is “A” and “B”.
The communication should comply with MODBUS-RTU statute.
The combination of a communication signal: Address code - function code – date segment – CRC calibration code. The distance between two characters should not be longer than one character, or it will be considered as the beginning of a new message or the end of a old message. The message is combined with hexadecimal arrays.
Defination of the dates: Please reference to the chart 6.1 below.
Chart 6.1 Address of the displayed date
Register
address
Usage Nature Date type
0~1 Flow rate Read only Float
2~3 Frequency Read only Float
4~5 Pressure Read only Float
6~7 Total Flow Read only Float
The displayable dates including flow rate, pressure, temperature and total flow, if the meter is not
multi-variable version, then the reading of pressure and temperature will both be 0. The date of the parameters in above chart can be read by using function code 03 according to the address above and shifting.
The addresses of code setting are as below.
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Chart 6.2 Address of code setting
Register Usage Range Nature Date
type
1000 Pre-heating time (warm up) C01 1~99 Read only Short
1001 Density compensation C02 0~2 Read/Write Short
1002 Method of pulse output 0~2 Read/Write Short
1004 Output C05 0~2 Read/Write Short
1005 Pulse output parameter 0~3 Read/Write Short
1006 Damping C07 1~16 Read/Write Short
1007 Instrument number C08 Hart(0~15)
MB(1~99)
Read Short
1008 Baud rate C09 1~24 Read Short
1009 Unit of time C10 0~2 Read/Write Short
1010 Mass unit C11 0~2 Read/Write Short
1011 Volume unit C12 0~6 Read/Write Short
1012 Pressure unit C13 0~11 Read/Write Short
1013 Temperature unit C14 0~2 Read/Write Short
1014 Right digits number for total flow C15 0~5 Read/Write Short
1030 Time of circle display C31 0~30 Read/Write Short
1031 First paratmeter displayed in circle display C32 1~5 Read/Write Short
1032 Second paratmeter displayed in circle display
C33
0~5 Read/Write Short
1033 Third paratmeter displayed in circle display
C34
0~5 Read/Write Short
1034 Fourth paratmeter displayed in circle display
C35
0~5 Read/Write Short
1035 fifth paratmeter displayed in circle display C36 0~5 Read/Write Short
1039 Sequence of float C40 1~4 Read/Write Short
1040 Shape of pipeline C41 0~1 Read/Write Short
1042 The array length of moist control C43 5~50 Read/Write Short
1048 Status C49 0~10 Read/Write Short
1049 Total flow reset to 0 C50 0~1 Read/Write Short
Users can use function code 04 and 06 to access to the address for code setting above.
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Digital setting address is as below.
Chart 6.3 Address of digital setting
Register Usage Restriction of
modification
Nature Date
type
2000~2001 D001 Max flow -1e5~1e6 Read/Write Float
2002~2003 D002 Min flow -1e5~1e6 Read/Write Float
2004~2005 D003 Max frequency output 0~1e6 Read/Write Float
2006~2007 D004 Min frequency output -1e5~1e6 Read/Write Float
2008~2009 D005 Small signal cut off 0~1e6 Read/Write Float
2014~2015 D008 K factor 0~1e6 Read/Write Float
2016~2017 D009 Density setting 0~1e6 Read/Write Float
2018~2019 D010 Pipe inner diameter 0~1e6 Read/Write Float
2020~2021 D011 Max temperature -1e5~1e6 Read/Write Float
2022~2023 D012 Min temperature -1e5~1e6 Read/Write Float
2024~2025 D013 Max pressure -1e5~1e6 Read/Write Float
2026~2027 D014 Min pressure -1e5~1e6 Read/Write Float
2028~2029 D015 Ambient pressure 0~1e6 Read/Write Float
2030~2031 D016 Temperature for standard
condition
-1e5~1e6 Read/Write Float
2032~2033 D017 Equivalent of pulse output 0~1e6 Read/Write Float
2034~2035 D018 Length of rectangle pipeline 0~1e6 Read/Write Float
2036~2037 D019 Width of rectangle pipeline 0~1e6 Read/Write Float
2058~2059 D030 Temperature for standard
condition
0~20
Read/Write Float
2064~2065 D033 Reference flow rate 0~1e6 Read/Write Float
The chart above indicates the register address, usage of the register, restriction of modification,
read/write nature and date type. The register above are all holding register, the supporting function code is 03,04,06,16 function code.
6.2 Commends
Function code 03 and 04 are the codes supported for reading the registers. Function code 06 is for
writing one register. Function code 16 is for wrting multi registers. Function code 06 is only supported for writing short date. Function code 16 is supported for writing both short date and float date.
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Function code 03 – Read register
Request Response
01 : Address 01: Address
03 : Function code 03 : Function code
00 : Register address higher 04 : Quantity of bit
00 : Register address lower (display the address) 80 : Date 1
00 : Register number higher 04 : Date 2
02 : Register number lower 80 : Date 3
CRCL : CRC Parity code lower 80 : Date 4
CRCH ：CRC parity code higher
CRCL : CRC Parity code lower
CRCH ：CRC parity code higher
Note: To read a float date, the quantity of the register addresses and their values have to be even,
or reponse will be error.
Function code 04 – Same as function code 03
Function code 06 – write one register
Request Response
01 : Address 01: Address
06 : Function code 06 : Function code
00 : Register address higher 00 : Register address higher
01 : Register address lower (code setting address) 01 : Register address lower
00 : Value higher 00 : Value higher
04 : Value lower 04 : Value lower
CRCH ：CRC parity code higher CRCH ：CRC parity code higher
CRCL : CRC Parity code lower CRCL : CRC Parity code lower
Note: Function code is only supported for writing short dater.
Function code 16- write multi registers.
Request Response
01 : Address 01: Address
10H : Function code 10H : Function code
00 : Register address higher 00 : Register address higher
01 : Register address lower (digital setting address) 01 : Register address lower
00 : Quantity of register higher 00 : Quantity of register higher
02 : Quantity of register lower 02 : Quantity of register lower
04 : Quantity of values
CRCH ：CRC parity code higher
86h : Value 1 CRCL : CRC Parity code lower
00 : Value 2
00 : Value 3
48H: Value 4
CRCH ：CRC parity code higher
CRCL : CRC Parity code lower
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Note: Function code 16 is supported to write float date. But for float date, the first register address
and the quantity of the registers must be even, or writing is not allowed.
6.3 Calculation of CRC parity code.
Request Response
01 : Address
N
1 CRC=0FFFFH is initial value
10 : Function code
N
2 XOR operation the CRCL and N1
00 : Register address higher
N
3 CRC move 1 bit right , if move out is 1 bit
01 : Register address lower
N
4 CRC=CRC XOR A001H
00 : Register quantity higher
N
5 if move out is 0 , CRC=CRC
04 : Register quantity lower
N
6 Move right for 8 times to finish the N1 calculation
04 : Date quantity
N
7 …
80 : Date 1
N
8 XOR operation the CRCL and N11
04 : Date 2
N
9 CRC move 1 bit right , if move out is 1 bit
80 : Date 3
N
10 CRC=CRC XOR A001H
80 : Date 4
N
11 if move out is 0 , CRC=CRC
CRCL : CRC Parity code lower Move right for 8 times to finish the N11 calculation
CRCH ：CRC Parity code higher
Get the CRC calibration value
6.4 The float date format of the instrument
The storage sequence of 4 bits float formate is as below: Address: 0 1 2 3 Content:
MMMMMMMM MMMMMMMM EMMMMMMM SEEEEEEEE
Use IEEE standard method, do not store 1 on top digit, if top digit is 1, means negative; if top digit is 0, means positive. So the 23 mantissas and a 1 on top digit, which is concealed, constitute a 24 bits fixed point true form decimal, which is a decimal have mantissas less than 1 and more than or equal to 0.5. The lowest 8 bits are exponent-marker using shift code method. The exponent marker equals to the actual value minus 127. For example: 7=86H-7FH, -10=75H-7FH
e.g.: 100=0x00,0x00,0x42,0xc8
-100=0x00,0x00, 0xc2,0xc8 0=0x00.0x00.0x00.0x00 (exponent-marker is 0, the number is 0)
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6.5 The sequence of the float date bytes of instrument
Code setting C40 is used for setting the sequence of the float date bytes of instrument.
1: LL_LH_HL_HH the lower 16 bytes registers come first, the lower 8 bytes within the 16 bytes
registers come first.
eg: 100=0x00,0x00, 0xc8, 0x42
-100=0x00, 0x00, 0xc8, 0xc2 2: HH_HL_LH_LL the higher 16 bytes registers come first, the higher 8 bytes within the 16 bytes
registers come first.
eg: 100=0x42,0xc8,0x00,0x00
-100=0xc2,0xc8 ,0x00,0x00 3: LH_LL_HH_HL the lower 16 bytes registers come first, the higher 8 bytes within the 16 bytes
registers come first.
eg: 100=0x00,0x00,0x42,0xc8
-100=0x00,0x00,0xc2,0xc8 4: HL_HH_LL_LH the higher 16 bytes registers come first, the lower 8 bytes within the 16 bytes
registers come first.
eg: 100=0xc8,0x42,0x00,0x00
-100=0xc8,0xc2,0x00,0x00
6.6 Modbus error reponse
When the host sends a command and asks for a correct reponse, one of below four is going to happen:
1) If the command from the host is correct and processable, the flow meter will give a correct reponse.
2) If the flowmeter failed to receive the command due to a communication failure, the flowmeter will not response. . The host will process an overtime commend.
3) If the flowmeter received a command, but detected parity, the error of LRC and CRC will cause no reponse. The host will process an overtime commend.
4) If the flowmeter recived a correct command, but can not process it (read or write a none-existing register etc.), the flowmeter will send a error reponse
A error reponse has two byte sections to show its difference from a correct reponse.
Function code section: In a correct reponse, the flowmeter will copy the origin function code sent from the host, and the highest bytes of them are all 0(all function codes are smaller than 0x80). In a error reponse, the flowmeter will set the highest bytes to 1. The host can detect the error code and know the content of the error when it detect that the highest bytes of function codes are 1.
Value section: In a error reponse, the flowmeter will reply a byte as the error code to definite the content of the error. Pleaes reference to the chart below for the error codes and its definition:
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Code Name Meaning
01 Illegal function
code
Flowmeter can not process the function code in a command. Maybe this function code can only be used on a new device, or it can also indicate that the flowmeter is under error statues.
02 Illegal address The flowmeter can not process with the address in the command. The
initiate address plus address diversion are higher than the highest address.
03 Illegal contents
of value
The content of the value in the command is not acceptable for the flowmeter.
04 Flow meter
function failed
An unrecoverable failure happened when the flowmeter is trying to reponse.
05 Reponse The flow meter will take a long while to process the command. So
reponse this error code to prevent the host from processing a overtime command.
06 Flowmeter is
busy
To advise the host that the flowmeter is processing a command which will takes a long time. So the host should resend the command when the flowmeter is free.
6.7 Examples of communication
The flowmeter’s instrument Modbus address is 01, baud rate=4800 (C08=01, C09=05, C40=02).
Example 1: Read flow rate F,F=916.49 (4 bytes float)
Host command： 01 03 00 00 00 02 C4 0B Flowmeter reponse： 01 03 04 44 65 1F CE 77 78
Example 2: Read total flow
Host command： 01 03 00 06 00 02 24 0A Flowmeter reponse：01 03 04 44 9D 1E 3F 36 9D
Example 3: Read all the value displayed on the flowmeter, including flow rate, temperature, pressure, total flow ….. all together 4 value (16 bytes)
Host command： 01 03 00 00 00 08 44 0C
Flowmeter reponse：01 03 10
44 65 1F CE（flow rate＝916.49）
00 00 00 00（temperature＝0） 00 00 00 00（pressure＝0） 44 9D 1E 3F（total flow in float＝1256.94）
B7 (CRCL) BF (CRCH)
7 Introduction of HART communication protocol
7.1 HART commands
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7.1.1 Command 0:Read transmitter unique identifier
Command formate
Return to the expension device type code, version number and identification number Request: None Response:
Byte 0: 254 Byte 1: Manufacture’s ID Byte 2: Manufacture’s device type Byte 3: Number of request preambles Byte 4: Revision level of universal command Byte 5: Revision level of transmitter document Byte 6: Software revision level Byte 7: Hardware revision level Byte 8: Flags, none defined at this time Byte 9-11: Device Indentification Number
Test of command
Send 0 command:FF FF FF FF FF 02 80 00 00 82; to request information of the instrument Receive 0 command:FF FF FF FF FF 06 80 00 0E 00 00 FE 1A 1A 05 05 00 00 00 00 AD 18 8C
4F
7.1.2 Command 1: Read primary variable value (PV)
Command formate:
Return to primary variable value in float. Request:None Response:
Byte 0: Primary variable unit code Byte 1-4: Primary variable
Remark: Set primary command to flow rate. Test of command:
Send command 1: FF FF FF FF FF 82 9A 1A AD 18 8C 01 00 3A ;to read the IEEE754 float
value of primary variable.
Receive command 1:FF FF FF FF FF 86 9A 1A AD 18 8C 01 07 00 00 13 00 00 00 00 2A
7.1.3 Command 2:Read primary variable’s current and percentage value
Command formate:
Read the current and percent of the primary variable, the current of primary variable always match the AO current output of the instrument. Percent is not restricted within 0~100%, if it is beyond the limit of primary variable, it will find the limit of the transmitter.
Request: None
Reponse:
Byte 0-3: Analog output current mA, Byte 4-7: Percent of range
Test of command:
Send command 2: FF FF FF FF FF 82 9A 1A AD 18 8C 02 00 39; to read the current and primary variable percent of range.
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Receive command 2: FF FF FF FF FF 86 9A 1A AD 18 8C 02 0A 00 00 40 80 00 00 00 00 00 00 F7
7.1.4 Command 3: Read primary variable current and dynamic variables
Command formate:
Read the current of primary variable and 4 preset dynamic variables at maximum. The current of primary variable always match the AO output current of the instrument. Every type of device has a definition on a relative dynamic variable, for example the secondary variable is temperature sensor.
Request: None
Response:
Byte 0-3: Analog output current mA, IEEE 754 Byte 4: Primary variable unit code Byte 5-8: Primary variable, IEEE 754 Byte 9: Secondary variable unit code Byte 10-13: Secondary variable, IEEE 754 Byte 14: Tertiary variable unit code Byte 15-18: Tertiary variable, IEEE 754 Byte 19: Quaternary variable unit code Byte 20-23: Quaternary variable, IEEE 754
Remark: Primary variable is flow rate. The unit code is 75:kg/hour, 19:m3/hour;
Secondary variable is total flow. The unit code is 61:kg, 43:m3;
Tertiary variable is temperature. The unit is 32: ℃; Quaternary variable is pressure. The unit is 12: Mpa;
Test of command:
Send command 3: FF FF FF FF FF 82 9A 1A AD 18 8C 03 00 38; to read dynamic variables
Receive command 3: FF FF FF FF FF 86 9A 1A AD 18 8C 03 1A 00 00 40 80 00 00 13 00 00 00 00 2B 48 33 5A 4B 26 00 00 00 00 20 00 00 00 00 B2
7.1.5 Command 6: Write polling address
Command formate:
It is a date link manangment command. This command writes a polling address to the device. This address is used to control the AO of primary variable and providing of device ID.
Only when the polling address of the instrument is 0, that the AO output of primary variable is available. If the address is 1~15, AO will be not activated and will not reponse, AO will be minimum value; transmission status will be the 3
rd
statue------primary variable AO fixed; max and min alarm not
implemented. If polling address is write back to 0, AO will be activated again and will reponse.
Request:
Byte 0: Device polling address
Response:
Byte 0: Device polling address
Test of command:
Send command 6: FF FF FF FF FF 82 9A 1A AD 18 8C 06 01 00 3C: to write POLLING ADDRESS
Receive command 6: FF FF FF FF FF 86 9A 1A AD 18 8C 06 03 00 00 00 3A
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7.1.6 Command 11: Read unique identifier associated with tag
Command formate:
It is a date link manangment command. This command will return the device type, revision level
and divice indentification number of the device which matches to the tag. Process the command upon receipt of the expension address or broadcast address. The expension addresses in command and reponse are the same.
Request:
Byte 0-5: Tag,Packed ASCI
Response:
Byte 0: Device type code for expansion
Byte 1: Manufacture Indentification code
Byte 2: Manufacture device type
Byte 3: Number of request preambles
Byte 4: Revision level of universal command
Byte 5: Revision level of transmitter document
Byte 6: Software revision level
Byte 7: Hardware revision level
Byte 8: Flags, none defined at this time.
Byte 9-11: Device identification number
Test of command:
Send command 11: FF FF FF FF FF 82 9A 1A AD 18 8C 0B 00 30; Read relevant info of the device such as unique identifier associated with tag
Receive command 11: FF FF FF FF FF 86 9A 1A AD 18 8C 0B 0E 00 00 FE 1A 1A 05 05 00 00 00 00 AD 18 8C FD
7.1.7 Command 12:Read message
Command formate:
To read message
Request: None
Response:
Byte 0-23: Message
Test of command:
Send command 12:FF FF FF FF FF 82 9A 1A AD 18 8C 0C 00 37 ; read message
Receive command 12:FF FF FF FF FF 86 9A 1A AD 18 8C 0C 1A 00 00 59 00 74 D6 05 8F 49 41 58 80 42 47 25 40 4C 81 04 8F 0C 54 D3 3D 28 20 10
7.1.8 Command 13: Read tag, descriptor, date
Command formate:
Read device tag,description and date.
Request: None
Response:
Byte 0-5: Tag,ASCII Byte 6-17: Descriptor,ASCII Byte 18-20: Date: day,month,year
Test of command:
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Send command 13:FF FF FF FF FF 82 9A 1A AD 18 8C 0D 00 36 ;read device tag, descriptor and date
Receive command 13:FF FF FF FF FF 86 9A 1A AD 18 8C 0D 17 00 00 50 11 E0 82 08 20 58 F4 94 15 88 06 30 F5 CD 15 41 52 0F 01 6F E2
7.1.9 Command 14: Read primary variable sensor information: device serial number and limits
Command formate:
Read device information
Request: None
Response:
Byte 0-2: Sensor serial number MSB, 24-BIT unsigned integer Byte 3: Flow rate unit Byte 4-7: Upper sensor limit of flow rate Byte 8-11: Lower sensor limit of flow rate Byte 12-15: Minimum span of flow rate
Test of command:
Send command 14: FF FF FF FF FF 82 9A 1A AD 18 8C 0E 00 35; to read primary sensor serial number and limits.
Receive command 14: FF FF FF FF FF 86 9A 1A AD 18 8C 0E 12 00 00 00 00 00 13 43 96 00 00 00 00 00 00 38 D1 B7 17 AC
7.1.10 Command 15: Read primary variable output information
Command formate:
Read Primary variable alarm select code, primary variable transfer code,primary variable range values units code, primary variable upper and lower range value, primary variable damping value, write protect code and private label distributor code VIII
Request: None
Response:
Byte0: Alarm select code Byte1: Primary variable transfer function code Byte2: Primary variable range values unit code Byte3-6: Primary variable upper range value, IEEE754 Byte7-10: Primary variable lower range value, IEEE754 Byte11-14: Primary variable damping value, IEEE754,units of seconds Byte15: Write protect code Byte16: Private Label Distributor Code
Test of command:
Send command 15:FF FF FF FF FF 82 9A 1A AD 18 8C 0F 00 34; Read primary variable output information
Receive command 15:FF FF FF FF FF 86 9A 1A AD 18 8C 0F 13 00 00 00 00 13 43 96 00 00 00 00 00 00 42 20 00 00 FB 12 6E
7.1.11 Command 16: Read final assembly number
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Command formate:
Read final assembly number.
Request: None
Response:
Byte 0-2: Final assembly number
Test of command:
Send command 16:FF FF FF FF FF 82 9A 1A AD 18 8C 10 00 2B; Read final assembly number
Receive command 16: FF FF FF FF FF 86 9A 1A AD 18 8C 10 05 00 00 A8 36 81 35
7.1.12 Command 17: Write message
Command formate:
Write message
Request:
Byte 0-23: Message
Responee:
Byte 0-23: Message
Test of command:
Send command 17:FF FF FF FF FF 82 9A 1A AD 18 8C 11 18 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 32 ;message
Receive command 17:FF FF FF FF FF 86 9A 1A AD 18 8C 11 1A 00 00 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 34
7.1.13 Command 18: Write tag, descriptor, date
Command formate:
Write tag, descriptor, date.
Request:
Byte 0-5: Tag,ASCII
Byte 6-17: Descriptor,ASCII
Byte 18-20: Date: day, month, year
Response:
Byte 0-5: Tag,ASCII
Byte 6-17: Descriptor,ASCII
Byte 18-20: Date: day, month, year
Test of command:
Send command 18: FF FF FF FF FF 82 9A 1A AD 18 8C 12 15 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3C
Receive command 18:FF FF FF FF FF FF 86 9A 1A AD 18 8C 12 17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3A
7.1.14 Command 19: Write final assembly number
Command formate:
Write final assembly number
Request:
Byte 0-2: Final assembly number
Response:
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Byte 0-2: Final assembly number
Test of command:
Send command 19: FF FF FF FF FF 82 9A 1A AD 18 8C 13 03 01 02 03 2B ;
Receive command 19: FF FF FF FF FF 86 9A 1A AD 18 8C 13 05 00 00 01 02 03 29
7.1.15 Command 34: Write primary variable damping value
Command formate:
Write primary variable damping value. If the value is not acceptable, will revert with alarm
Request:
Byte 0-3: Damping value, IEEE754
Response:
Byte 0-3: Actual damping value, IEEE754
Test of command:
Send command 34: FF FF FF FF FF 82 9A 1A AD 18 8C 22 04 40 00 00 00 5D; Write primary variable damping value
Receive command 34: FF FF FF FF FF 86 9A 1A AD 18 8C 22 06 00 00 40 00 00 00 5B
7.1.16 Command 35: Write primary variable range values
Command formate:
The upper and lower limits of primary variable are independent. The primary variable range unit
value that this command received has no effect on the primary variable unit value. The primary value range value will be returned in the unit received.
Most device allows that the measurement range upper limit lower than lower limit ,to support the
device to reverse output.
Request:
Byte 0: Primary variable upper and lower range value unit code
Byte 1-4: Primary variable upper range limit, IEEE 754
Byte 5-8: Primary variable lower range limit, IEEE 754
Response:
Byte 0: Primary variable upper and lower range value unit code
Byte 1-4: Primary variable upper range limit, IEEE 754
Byte 5-8: Primary variable lower range limit, IEEE 754
Test of command:
Send command 35: FF FF FF FF FF 82 9A 1A AD 18 8C 23 09 13 40 00 00 00 40 00 00 00 02; Write primary variable range values
Receive command 35: FF FF FF FF FF 86 9A 1A AD 18 8C 23 0B 00 00 13 00 00 00 00 00 00 00 00 04
7.1.17 Command 36: Write primary variable upper limit value
Command formate:
Write the primary variable upper limit to current primary variable value. The change of primary variable upper limit value has no effect on the primary variable lower limit.
Request:
NONE
Response:
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NONE
Test of command:
Send command 36: FF FF FF FF FF 82 9A 1A AD 18 8C 24 00 1F; Write the primary variable upper limit to current primary variable value.
Receive command 36: FF FF FF FF FF 86 9A 1A AD 18 8C 24 02 00 00 19
7.1.18 Command 37: Write primary variable lower limit value
Command formate:
Write the primary variable lower limit to current primary variable value. The change of primary variable lower limit value has no effect on the primary variable higher limit.
Request:
NONE
Response:
NONE
Test of command:
Send command 37: FF FF FF FF FF 82 9A 1A AD 18 8C 25 00 1E; Write the primary variable lower limit to current primary variable value.
Receive command 37: FF FF FF FF FF 86 9A 1A AD 18 8C 25 02 00 00 18
7.1.19 Command 40: Enter/Exit primary variable current mode
Command formate:
Device is set to fixed primary variable current, when primary variable is 0, means to exit primary variable current mode.
Request: Byte 0-3: Fixed primary variable current level IEEE 754, mA Response: Byte 0-3: Actual fixed primary variable current level IEEE 754, mA
Test of command:
Send command 40: FF FF FF FF FF 82 9A 1A AD 18 8C 28 04 40 80 00 00 D7
Receive command 40: FF FF FF FF FF 86 9A 1A AD 18 8C 28 06 00 00 40 80 00 00 D1
7.1.20 Command 45: Trim primary variable current DAC zero
Command formate:
Trim the primary variable current AO zero, so the current current value is accurate set to its min
value.
Before implementing this command, use command 40 to set current to accurate primary variable
AO min value. If device is not under fixed primary variable current mode or current has not been set to accurate min value, need to return response code 9---not under correct current mode. Request: Byte 0-3: Externally measured primary variable current level IEEE754, units of mA Response:
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Byte 0-3: Actual measured primary variable current level IEE 754
Test of command:
Send command 45: FF FF FF FF FF 82 9A 1A AD 18 8C 2 D 04 40 80 00 00 D2
Receive command 45: FF FF FF FF FF 86 9A 1A AD 18 8C 2D 06 09 00 40 80 00 00 DD :
response code is 09, device is not under correct current mode.
7.1.21 Command 46: Trim primary variable current DAC gain
Command formate:
Trim primary variable AO gain,so the current current value is accurate set to its max value.
Before implementing this command, use command 40 to set current to accurate primary variable
AO max value. If device is not under fixed primary variable current mode or current has not been set to accurate max value, need to return response code 9---not under correct current mode.
Request: Byte 0-3: Externally measured primary variable current level IEEE754, units of mA Response: Byte 0-3: Actual measured primary variable current level IEE 754
Test of command:
Send command 46: FF FF FF FF FF 82 9A 1A AD 18 8C 2 E 04 40 80 00 00 D1
Receive command 46: FF FF FF FF FF 86 9A 1A AD 18 8C 2E 06 09 00 40 80 00 00 DE :
response code is 09, device is not under correct current mode.
8 Maintaining
8.1 How to change the transmitter’s direction
1) The transmitter can be reversed to any direction.
2) Before reverse the transmitter, please loose the nut (Part No.1) under the transmitter.
3) Reverse the transmitter to the direction required, then screw and tighten the fixing nut. Please reference to picture 8.1
Picture 8.1 Change the transmitter’s direction
1
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8.2 Replace a transmitter circuit boards
1) Please make sure the power is off before replacing the transmitter.
2) Remove the front cover.
3) Loose the 4 screws on the circuit boards, than can take the boards out a little.
4) Remove all the plugs on the circuit board.then remove the circuit board away
5) Put the new circuit board in and put the plug on
6) Tighten the 4 screws on the board, tighten the front cover Please reference to picture 8.2
Picture 8.2 Replace the transmitter
8.3 Remove the flow meter
1) Please make if the meter is under pressure from pipeline, if it is, please hold it before loosing the nut sleeve to prevent it from ejecting out
2) Loose the nut (Part No.1) with a wrench (loose it for 2 or 3 circle will be enough)
3) Pull out the meter as you can, relock the nut (Part No.1), please note the sleeve is still connected to the ball valve so far
4) Close the ball valve (Part No.3) to hold the pressure inside the pipeline
5) Loose the sleeve (Part No.2) and take out the flow meter
Picture 8.3 Picture 8.4
2
3
Long screws
1
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8.4 How to clean the sensors
The sensor itself can be dirt caused by the oil, dust, impurity and dirt in the fluid, which may cause effect on the measurement result. When it is necessary to clean the sensor, please remove the meter according to 8.3. Then dip the sensor into alcohol or acetone (according to the contents of the dirty) for 10~30 minutes, then wipe the sensors with clean cloth or paper. Please make sure the sensor is well protected during the whole process, do not hit or scratch it.
Picture 8.5
9 Troubleshooting and repair
9.1 Safty introduction
Please do not open the cover on the flame proof enclosure if in an explosive environment. When trying to wire to HART or RS485 device, please make sure that the process of wiring the device
into the loop complys with the intrinsic safty requirement. Or please process the wiring in a none-explosive environment.
Please make sure the environment the flowmeter in can meet the requirement of the certificate. When power is wired, please make sure the front and rear cover is closed properly.
9.2 Troubleshooting and repair
Please check out below issues before the troubleshooting
1) Please make sure the power source and its wiring is correct
2) Please process all wiring according to Chapter 3
3) Please make sure the straight pipeline length apply to the requirement in Chapter 2
4) Please make sure the meter’s flow direction mark is point at the direction where the flow goes
Sensors
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After checking out above issues, please process trouble shooting according to following description.
Problem Possible Cause Solution
Velocity measurement is erractic or fluctuating
Very erractic or non-uniform flwo
Follow installation requirements shown in Chapter 2
Flow meter installed with less than required minimum pip diameters upstream and dlown stream of the sensor
Follow installation requirements shown in Chapter 2
Insertiong sensor probe not mounted securely
Sensor probe must be mounted securely without vibration
Earthing circuit loop
Wire the meter according to the introduction in Chapter 3
Liquid contains in fluid
Install a water filter in upstream of the meter
Sensor failure Return to factory for evaluation
Transmitter failure Return to factory for evaluation
The measuring flow is too high or too low
Sensor is not inserted to the middle of the pipe line
Please fix the sensor in the middle of the pipeline
The flowmeter is not vertical to the center line of the pipe line
Re-install the meter and make the probe vertical to the center line of the pipe line
No flow measured
The limit of small signal cut off is set too high
Set the small signal cut off limit to a lower and proper value
The flow rate in pipeline is smaller than the lower limit of the meter
Contact the supplier
The flow rate in pipeline is larger than the higher limit of the meter
Contact the supplier
Flow profile distortion
Try to find another location for the meter
Sensor failure Return to factory for evaluation
Transmitter failure Return to factory for evaluation
Extremely turbulent flow
Do not place the emter near a ventilator static mixer or valve
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9.3 Self-diagnose function
TGF450 thermal mass flowmeter display can also indicate the self-diagnose code as below：
Error code Problem Repair
Err-003 Temperature sensor disconnected Check Temperature sensor
Err-004 Pressure sensor disconnected Check pressure sensor
Err-005 About to over total flow This is a reminding message
Err-006 Display value over limit
The value is over the physical limit of the display
Err-013
Button is pressed and hold for too long time
Check the button circuit
Err-014 Reset code setting failed Check EEPROM
Err-015 Reset digital setting failed Check EEPROM
Err-016 Read total flow error Check EEPROM
Err-017 Temperature calibration setting is wrong
Check the record of temperature calibration
Err-018 Pressure calibration setting is wrong Check the record of pressure calibration
Err-020 Flow rate limit setting is incorrect Check the flow rate limit setting
Err-023 Communication connection error Check the communication link
Err-026 Pulse equivalent is set too high Reset D017
Err-027 Pulse equivalent is set too low Reset D017
10 Remark
No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language, in any form or by any means, electronic, mechanical, manual, or other wise, or disclosed to third parties without the express writeen permission of Comate Intelligent Sensor Technology. The information contained in this manual is subject to change without notice.
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Appendix
Specification
Insertion type In-line type
Media Compatibility
Air, Nitrogen
Pipe diameter DN25~900mm DN15~300mm
Flow velocity range 0.6~60Nm/s or 0.9~90Nm/s or 1.2~120Nm/s or 1.5~150Nm/s
Accuracy 0.5% RD+ ±1.5% FS
Temperature of medium
－
40~+150°c
Pressure of medium 1.6MPa 4.0Mpa
Power supply
AC85～265V or DC13.5～42V
Response time 1 second
Output Frequency as standar d, pulse and RS485 as optional
Communication RS~485 as standard , 4~20mA@HART as optional
Date displayed
Mass flow, Volume flow in normal condition
Total flow , Temperature of medium. Velocity Ingress protection grade IP65 (GB China) Remark:
The insertion probe of meter has 2 diameters, which are 11mm with 1/2” NPT and 19mm with 1” NPT.
When pipe line is over DN400 or flow velocity is higher than 90Nm/s, will use 19mm probe.
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Size and dimension
Nut sleeve insertion with ball valve
DN25~DN400 (Please contact us if need to customized probe length)
1/2 ” NPT socket base for nut sleeve insertion
Remark: R is the outer shape of the pipeline. The material can be same as the pipeling if required so. If customer’s chosen model require 1” NPT, than will need 1” socket base
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