UNITTA U-508 User manual

SonicBeltTensionMeter
U-508OperationManual
Contents
１.Precautions P１
P３
P４
P５
P７
P８
２.Briefsummary,caution&check
pointsforthefailure
３.MeasurementprincipleofU-508
４.ExplanationofthepartsofU-508
mainbody
５.OperationprocedureofU-508
６.Howtoinputthedata
６-１Howtoinputtheunitmass
７.Unitmasstableofthe
preinstalledbelt
６-２Howtoinputthebeltwidthorthenumberofbelts(ribs)
６-３Howtoinputthevalueofspanlength
８.UnitmasstableofGateUnitta
Asiatoothshapetimingbelt
９.TheunitmasstableofVbelt
madebyGates
１０.Thestandardinstallationtension
 tableoftheGUAtimingbelt
P９
P １０
１１.SpecificationofU-508
１２.Guarantee&RepairGuidelines
P １２
P１1
P１0
P １３
ThismanualdescribesoperationprocedureofU-508.
Pleasereadthismanualthoroughlybeforeforfulluseoffunctions.
U-508MANUALV01
HEADOFFICE4-26SAKURAGAWA4-CHOME,NANIWA-KUOSAKA556-0022.JAPAN
TEL:[phone] FAX:[phone]

1
2
Danger
■Pleasereadthisprecautionscarefully.AndKeepthismanual
safeforfuturereference.
■Theseprecautionsarewrittentodefendtheusertokeep
otherpeoplefromharm,andtopreventotherdamages.
Pleasepayattentiontotheseprecautions.
■Thesesignsindicatethelevelofdangerwhichcanbe
expectedbyimproperuse.   
１.  Precautions
Imminentlydangerous
situation,suchasdeath
orsevereinjury
Warning
Cancausebreakdown,
injury,andelectric
shock
Caution
Caution
Injuryorphysical
damages
ThingstheusermustNOTdo.
Thingstheusermustdo.
Avoidkeepingattheplace
wheremuchhumidity,dustand
hightemperaturearepresent.
●Cancausethebreakdown 
Donotleaveorusethis
sensorinthedirectsunlight
orhightemperatureplace.
Donotputonanunstable
placelikeaslopingtable.
●Cancauseinjuryorbreakdown
Pleasemeasurethetensile
forceafterconfirmingthe
machinehasbeenturnedoff.
Donotmakestrongimpactor
throw.
●Cancausebreakdownandfire
Donotusethisina
flammableenvironment. 

●Cancauseanexplosionorthefire
whenusingthisnearpropanegas
orgasoline
Donotbreakdownor
change.
●Cancauseinjury
Eventhoughthearmpartsof
thesensorareflexible,donot
bendatanacuteangle.Please
donotbenditclosetothe
headofthesensor(within
20mmfromthesensor),and
alsodonotbenditatthe
bottomofthesensor.Donot
grabortwirlthecordstrongly.
Pleaseturnoffthepower,
immediatelyrightafteryou
hearathundernoiseand
movetoasafetyplace. 

●Cancauseanelectricshock
Donotputliquidssuchas
waterorsolventsonthe
meter.Donotusethesensor
inawetoroilyenvironment.
Donotusesolvents(thinner
andbenzene,etc.)for
maintenance.
Warning

1
2
Danger
■Pleasereadthisprecautionscarefully.AndKeepthismanual
safeforfuturereference.
■Theseprecautionsarewrittentodefendtheusertokeep
otherpeoplefromharm,andtopreventotherdamages.
Pleasepayattentiontotheseprecautions.
■Thesesignsindicatethelevelofdangerwhichcanbe
expectedbyimproperuse.   
１.  Precautions
Imminentlydangerous
situation,suchasdeath
orsevereinjury
Warning
Cancausebreakdown,
injury,andelectric
shock
Caution
Caution
Injuryorphysical
damages
ThingstheusermustNOTdo.
Thingstheusermustdo.
Avoidkeepingattheplace
wheremuchhumidity,dustand
hightemperaturearepresent.
●Cancausethebreakdown 
Donotleaveorusethis
sensorinthedirectsunlight
orhightemperatureplace.
Donotputonanunstable
placelikeaslopingtable.
●Cancauseinjuryorbreakdown
Pleasemeasurethetensile
forceafterconfirmingthe
machinehasbeenturnedoff.
Donotmakestrongimpactor
throw.
●Cancausebreakdownandfire
Donotusethisina
flammableenvironment. 

●Cancauseanexplosionorthefire
whenusingthisnearpropanegas
orgasoline
Donotbreakdownor
change.
●Cancauseinjury
Eventhoughthearmpartsof
thesensorareflexible,donot
bendatanacuteangle.Please
donotbenditclosetothe
headofthesensor(within
20mmfromthesensor),and
alsodonotbenditatthe
bottomofthesensor.Donot
grabortwirlthecordstrongly.
Pleaseturnoffthepower,
immediatelyrightafteryou
hearathundernoiseand
movetoasafetyplace. 

●Cancauseanelectricshock
Donotputliquidssuchas
waterorsolventsonthe
meter.Donotusethesensor
inawetoroilyenvironment.
Donotusesolvents(thinner
andbenzene,etc.)for
maintenance.
Warning

3
4
Fig.1OsciIlationattenuationoftimingbelt
150
100
50
0 50 100 150
２
Timingbeit：
３GTtoothshape×3
mm wide
（V）
０
-２ TIME A LIN
８０ m S
２.  Briefsummary,caution&checkpointsforfailure
３.MeasurementprincipleofU-508
Thesonicbelttensionmeter(U-508)is
thehandyequipmentwhichenablesto
measurethetensionaccuratelyby
analyzingsonicwavewithouttouching.
Asensorcatchestheproduced
eruptionofsoundwavebypickthebelt
span.Afterthat,thehighprocessing
computeranalyzesitandshowstheresult
onthescreendigitally.
Whenwemakeabeltbetweenpulleys
vibratebygivingimpact,itstartsto
oscillateirregularlyasseeninFig.1,but
graduallyitoscillatesaninherentregular
moves.
TheU-508tensionmeterwascreatedto
addressthisphenomenon.Inthepast,
therewasnoeasilyimplementeddevice
whichcouldcatchthesesmallwaves.
Wesucceededincatchingtheperiodof
wavepatternrelativelyeasilyby
developingadatahandlingmethodto
capturethevibrationfrequencythatmade
fulluseofmicrocomputer.
Asforthesystem,sensordetectsthe
vibrationwaveform,microcomputer
calculatesthecharactervibrationnumber
byprocessingthedata.
Tocalculatethebelttension,weusethe
transversevibrationofthethreadfor
settingatatensionasrightside.
Here,thebeltandthewirehavearigidity,
whichisdifferentfromthestring,therefore
U-508measurementdisplayedis
somewhathigherthantheactualtension
undertheaffectedcondition.
Therefore,itispossibletoobtain
correctionfactorbystrictcalibrationtest
andincorporateittothedatainput,
therebyitcandisplaymoreaccurate
tension.
AnexampleofcalibrationresultofU-508
measurementandactualtensionisshown
below:
CalculationTo＝４×M×W×S２ ×f２ ×１０ -９
 To ：Tension
M：Unitmass
W：Beltwidthornumberofribs（wires）
S ：Measuredspanlength
f ：Horizontalcharacteristicfrequency
（N）
（g/
mm width×mlength）
（
mm /R）
（
mm ）
（Hz）
■Briefsummary
■Checkpointsfortheimmeasurablestate
［Failedtomeasureortheresultswerefluctuatedsignificantly.］
ITEM
＊PleaseinquiretousorthedealerwhereyoupurchasediftheU-508doesnotworkafterchecking
thepointsabove.
PRESUMED PRESUMEDCAUSE CONFIRMATIONPONT
"Error"showsupor
themeasuremode
cannotbeengaged
ortheredlighton.
Theunevennessof
theoutputlevelis
large.
●Nothingshows
uporonly
measuring
processingsign
showsupfrom
thethirdtimeof
measurin
（Frequency
mode）
●Themeasured
valuechanges
everytimegreatly
●Thesensor
respondstothe
backgroundnoise
keenly
●"0"isenteredtotheunitmass,
width&span
●Inputthewrongfrequencyrange
●Measuredfrequencyexceeds
5000Hs
●Batterydrain
●Thesensorattachestoabeltfor
amoment
●Automaticgainadjustmentisnot
enough
●Checktheentereddata（Input
thecorrectnumber）
●Thefrequencydisplays,butthe
tensiondoesnotmeasure
●Changethemeasurement
frequencyrange
（STANDARD⇔HIGH）
●Checkwhetherthemeasurement
frequencyexceeds5000Hzor
 not
●Batterydrain
●Measureagainkeepingenough
distancesothatthesensordoes
notattachtoabelt
●Turnoffapoweronceatthe
measurementplace,thenturnit
on
（Turnonapowerwith
connectedthesensor,thenpush
"MEASURE"buttonafterone
second
Therefore,itisrequiredtoinputthelengthof
span to be measured and the mass of beIt
（unitmassxwidth）byuseofnumerickey.
3GTbalt
Actualtension（N）
U-508measuredvalue（N）
：Spanlength86 mm
：Spanlength 154 mm
：Spanlength365 mm
：Spanlength365 mm
［9 mm wide］
Standardinstalation
tensionofbelt
9mmwide
Standardinstalation
tensionofbelt
6mmwide
［6
mm wide］
Fig.2U-508relationbetweenmeasured
valueandactualtension
0
100
200
300
400
500
600
100 200 300 400 500 600
Actualtension（N）
U-508measuredvalue（N）
Typicalterisionwhen
sfrbtchingagain
Typical
lnstallation
tension
V-ribbedbelt
：Spanlength102
mm
：Spanlength201 mm
：Spanlength400 mm

3
4
Fig.1OsciIlationattenuationoftimingbelt
150
100
50
0 50 100 150
２
Timingbeit：
３GTtoothshape×3
mm wide
（V）
０
-２ TIME A LIN
８０ m S
２.  Briefsummary,caution&checkpointsforfailure
３.MeasurementprincipleofU-508
Thesonicbelttensionmeter(U-508)is
thehandyequipmentwhichenablesto
measurethetensionaccuratelyby
analyzingsonicwavewithouttouching.
Asensorcatchestheproduced
eruptionofsoundwavebypickthebelt
span.Afterthat,thehighprocessing
computeranalyzesitandshowstheresult
onthescreendigitally.
Whenwemakeabeltbetweenpulleys
vibratebygivingimpact,itstartsto
oscillateirregularlyasseeninFig.1,but
graduallyitoscillatesaninherentregular
moves.
TheU-508tensionmeterwascreatedto
addressthisphenomenon.Inthepast,
therewasnoeasilyimplementeddevice
whichcouldcatchthesesmallwaves.
Wesucceededincatchingtheperiodof
wavepatternrelativelyeasilyby
developingadatahandlingmethodto
capturethevibrationfrequencythatmade
fulluseofmicrocomputer.
Asforthesystem,sensordetectsthe
vibrationwaveform,microcomputer
calculatesthecharactervibrationnumber
byprocessingthedata.
Tocalculatethebelttension,weusethe
transversevibrationofthethreadfor
settingatatensionasrightside.
Here,thebeltandthewirehavearigidity,
whichisdifferentfromthestring,therefore
U-508measurementdisplayedis
somewhathigherthantheactualtension
undertheaffectedcondition.
Therefore,itispossibletoobtain
correctionfactorbystrictcalibrationtest
andincorporateittothedatainput,
therebyitcandisplaymoreaccurate
tension.
AnexampleofcalibrationresultofU-508
measurementandactualtensionisshown
below:
CalculationTo＝４×M×W×S２ ×f２ ×１０ -９
 To ：Tension
M：Unitmass
W：Beltwidthornumberofribs（wires）
S ：Measuredspanlength
f ：Horizontalcharacteristicfrequency
（N）
（g/
mm width×mlength）
（
mm /R）
（
mm ）
（Hz）
■Briefsummary
■Checkpointsfortheimmeasurablestate
［Failedtomeasureortheresultswerefluctuatedsignificantly.］
ITEM
＊PleaseinquiretousorthedealerwhereyoupurchasediftheU-508doesnotworkafterchecking
thepointsabove.
PRESUMED PRESUMEDCAUSE CONFIRMATIONPONT
"Error"showsupor
themeasuremode
cannotbeengaged
ortheredlighton.
Theunevennessof
theoutputlevelis
large.
●Nothingshows
uporonly
measuring
processingsign
showsupfrom
thethirdtimeof
measurin
（Frequency
mode）
●Themeasured
valuechanges
everytimegreatly
●Thesensor
respondstothe
backgroundnoise
keenly
●"0"isenteredtotheunitmass,
width&span
●Inputthewrongfrequencyrange
●Measuredfrequencyexceeds
5000Hs
●Batterydrain
●Thesensorattachestoabeltfor
amoment
●Automaticgainadjustmentisnot
enough
●Checktheentereddata（Input
thecorrectnumber）
●Thefrequencydisplays,butthe
tensiondoesnotmeasure
●Changethemeasurement
frequencyrange
（STANDARD⇔HIGH）
●Checkwhetherthemeasurement
frequencyexceeds5000Hzor
 not
●Batterydrain
●Measureagainkeepingenough
distancesothatthesensordoes
notattachtoabelt
●Turnoffapoweronceatthe
measurementplace,thenturnit
on
（Turnonapowerwith
connectedthesensor,thenpush
"MEASURE"buttonafterone
second
Therefore,itisrequiredtoinputthelengthof
span to be measured and the mass of beIt
（unitmassxwidth）byuseofnumerickey.
3GTbalt
Actualtension（N）
U-508measuredvalue（N）
：Spanlength86 mm
：Spanlength 154 mm
：Spanlength365 mm
：Spanlength365 mm
［9 mm wide］
Standardinstalation
tensionofbelt
9mmwide
Standardinstalation
tensionofbelt
6mmwide
［6
mm wide］
Fig.2U-508relationbetweenmeasured
valueandactualtension
0
100
200
300
400
500
600
100 200 300 400 500 600
Actualtension（N）
U-508measuredvalue（N）
Typicalterisionwhen
sfrbtchingagain
Typical
lnstallation
tension
V-ribbedbelt
：Spanlength102
mm
：Spanlength201 mm
：Spanlength400 mm

5
6
1.PressMEASUREbuttontosetupautotriggermode.  
※Initiallyisshown.
※Duringmeasurementisshown. 
Themeasurementstartsafterreceivingasignalfromasensor
2.ItwillstartmeasuringafterselectingbelttypeandpressMEASUREbutton. 
3.Afterchangingmeasuringfrequencyrange,pressMEASUREbuttonformeasuringchanged
frequencyrange.    
MEASURE
10
Thissensorhasnarrowpathofφ12.5mmandaction-pipewhichcansetasensorpositionhandily.
Itisbestusedwhenonecannotputthemainbodyonthefloor.  
Flexiblesensor
（Standardmodel）
11
One-touch
connector
Thereisthehollowofadent,insertaconvexconnectoratthetop.
Toremoveaconnector,slidethejointpartandpullout.
1
Powerbutton PressthepowerbuttontoturnU-508on.
Itwillautomaticallyturnofffiveminutesafterthelastmeasure.
2
●【Toshowthepreinstalledmass】
BelttypecategoryisshownupbypressingMASSbuttonmorethanonesecond. 
AndchoosebyUPorDOWNbuttonandpushMEASUREbuttonforconfirmation. 
＊Showingunit:g/m.      
＊CAT(roughstandard),tensionandfrequencywon'tbeshownwithoutselectingbelttype.
5
Selectbutton ●【Memoryofmeasuringcondition】
PressSELECTbuttontochooseanydesiredinputnumberdisplayedinpower-on. 
40memoryfunctionsselectablefromNo.0to39     
＊Topasson,pressSELECTbuttonbacktoback,tojumpinthenumber,pressthewished
numberdirectlyonit.
Pleasepressthenumbercontinuouslytocalloutlargerthanthenumberten. 
●【Calloutthemeasuredresult】
Itisabletoconfirmthelatest500databypressingmorethanonesecond. 
Toselecttheresult,pressUPorDOWMbutton.Tojumpthedata,Pressthosebuttonmorethan
onesecond.     
＊TheresultisrecordedinorderfromRec.001,itwillbeoverwrittenwhentherecordsstraythe
latest500results.     
4
WIDTHbutton ●PressWIDTHbuttonforputtingthewidthofthebeltwithnumerickey. 
＊Entercapacity:000.1-999.9mm/R     
＊EnterthenumberofribsforVbelt.    
6
SPANbutton ●PressSPANbuttonforputtingthewidthofthebeltspannumerickey.
7
Hzbutton
（switching
frequencyand
tension)）
●PressHzbuttonforselectingfrequencyor
tension.    
＊Themodechangeseverytimethisbuttonis
pressed.
●PressHzbuttonmorethanonesecondtoshow
bothrecordswithtensionandfrequency.
8
0/RANGE
button（switch
frequency
range）
Press0/RANGEbuttonmorethanonesecondtochangemeasurementfrequencyrange.
HIGH…………500〜5000Ｈｚ
STANDARD…10〜600Ｈｚ
※ChangetoHIGHformeasuringover600Hz   
9
Therearefourkindsofsensors.
Cordtype Because the sizeofthissenorisanarrow pathofφ 12.5mm,itismeasurableby
everyplaces.     
Flat type   This is the free pipe of the flat shape with thickness 10mm and 20mm in width.
Especiallyfortherightangledirectioninaparticularlysmallplace. 
Long arm type By using this sensor, it is possible to measure that the main body is hard to
reach.
Electromagnetictype Thisreacttotheelectromagneticvibration,unaffectedbytheneighboring
noise,themeasurementispossibleunderthevibrationdecrementearly. 
However, an application such as the pasting of a thin magnetic film or the magnetic paint is
necessaryforameasurementsideinthecaseofarubberbelt.
ThiscableconnectsU-508withPCs,andtransferthemeasureddata.
Sensor
（Option）
USBcablefortransfer
12
13
４. ExplanationofthepartsofU-508mainbody
Flexiblearmsensor 
（Standard）
11
One-touchconnector
1
Measurebutton 
（Decisionbutton）
10
Powerbutton
2
●Cordtypesensor
Sensor（Option）
12
●Flatflexiblesensor
Sensor
●Longarmsensor
●Electromagneticsensor
USBcableisnotattached. 
Pleaseuseacommercialone.（Mini-B5type）
13
LCSwithbacklight
3
Spanbutton
7
Selectbutton
（Callbuttonof
measuredresults） 
Powersupply:TripleAtypex2pieces
4
Hzbutton
（changeafrequency⇔tension）
8
LED
（Left:Red,Right:Green）
Widthbutton
6
Massbutton
5
O/Rangebutton
Changeafrequencyrange
9
UP/DOWN
button
5
S No 01 5GT
RESULT
TEN N
S No 01 5GT
RESULT
FREQ Hz
Measuredtension
S No 01 5GT
RESULT
FREQ Hz
TEN N
Measuredtension&frequency
S No 01 5GT
FREQUENCY
CAT Hz
RES Hz
Frequency&Catalogfrequency
S No 01 5GT
Tension&Catalogtension
Measuredtension&Frequency
TENSION
CAT N
RES N
LCDscreen
with
backlight.
Thisdisplays
tensionvalue


3
S No 00
M 9 9 9. 9 g/m
W 9 9 9 .9 mm/R
S 9 9 9 9 mm
S No 00 2GT
TENSION
99900 N
Measurement
frequencylevel
H:HIGH
S:STANDARD
MemoryNo.
Themeasuredresult
Inmeasurementofbelttype
Batteryresidualquantity
【OverviewofLCDshowingpattern】
Note:Thiswillbe
shownonlyfromthe
pre-installationone.
Unitmassbeltwidthspanindicationexample
●Tensionnumericalnumberisshownbythreedigitsfrom
0.01〜99,900.   
●Frequencynumericalnumberisshownbythreedigits
from10.0〜5,000Hz.   
●TheredlightandERRORwillbeshownonthescreen
whentheresultofthemeasureisoutofthestandard
range.
NOTE:Ifthestandardrangeoveroccursaftertheresultis
shown,itbeepstwiceuntilthesecondmeasure.
●Abatterytypesignatureatthetimeofthebattery
consumptionisshown.   
LOWBATTblinksonandoffwhenthebatteryislow.
●Abacklightisalwaysonbutitwillturnoffafterno
operationforoneminute.
H No 00 EV8YU
T Belt
V Belt
U Belt
Belt
S No 02 2GT
3GT 2.5
2GT 1.3
01
03
02
1.5GT 0.9
MASSbutton
S No 01
STANDARD
HIGH
ByUPorDOWNbuttontochoosetherange,andpress
MEASUREbuttonforconfirmation.
350mm
※USBcableinNOTincludedinthepackage.
PleaseusetheMINI-B5pin.

5
6
1.PressMEASUREbuttontosetupautotriggermode.  
※Initiallyisshown.
※Duringmeasurementisshown. 
Themeasurementstartsafterreceivingasignalfromasensor
2.ItwillstartmeasuringafterselectingbelttypeandpressMEASUREbutton. 
3.Afterchangingmeasuringfrequencyrange,pressMEASUREbuttonformeasuringchanged
frequencyrange.    
MEASURE
10
Thissensorhasnarrowpathofφ12.5mmandaction-pipewhichcansetasensorpositionhandily.
Itisbestusedwhenonecannotputthemainbodyonthefloor.  
Flexiblesensor
（Standardmodel）
11
One-touch
connector
Thereisthehollowofadent,insertaconvexconnectoratthetop.
Toremoveaconnector,slidethejointpartandpullout.
1
Powerbutton PressthepowerbuttontoturnU-508on.
Itwillautomaticallyturnofffiveminutesafterthelastmeasure.
2
●【Toshowthepreinstalledmass】
BelttypecategoryisshownupbypressingMASSbuttonmorethanonesecond. 
AndchoosebyUPorDOWNbuttonandpushMEASUREbuttonforconfirmation. 
＊Showingunit:g/m.      
＊CAT(roughstandard),tensionandfrequencywon'tbeshownwithoutselectingbelttype.
5
Selectbutton ●【Memoryofmeasuringcondition】
PressSELECTbuttontochooseanydesiredinputnumberdisplayedinpower-on. 
40memoryfunctionsselectablefromNo.0to39     
＊Topasson,pressSELECTbuttonbacktoback,tojumpinthenumber,pressthewished
numberdirectlyonit.
Pleasepressthenumbercontinuouslytocalloutlargerthanthenumberten. 
●【Calloutthemeasuredresult】
Itisabletoconfirmthelatest500databypressingmorethanonesecond. 
Toselecttheresult,pressUPorDOWMbutton.Tojumpthedata,Pressthosebuttonmorethan
onesecond.     
＊TheresultisrecordedinorderfromRec.001,itwillbeoverwrittenwhentherecordsstraythe
latest500results.     
4
WIDTHbutton ●PressWIDTHbuttonforputtingthewidthofthebeltwithnumerickey. 
＊Entercapacity:000.1-999.9mm/R     
＊EnterthenumberofribsforVbelt.    
6
SPANbutton ●PressSPANbuttonforputtingthewidthofthebeltspannumerickey.
7
Hzbutton
（switching
frequencyand
tension)）
●PressHzbuttonforselectingfrequencyor
tension.    
＊Themodechangeseverytimethisbuttonis
pressed.
●PressHzbuttonmorethanonesecondtoshow
bothrecordswithtensionandfrequency.
8
0/RANGE
button（switch
frequency
range）
Press0/RANGEbuttonmorethanonesecondtochangemeasurementfrequencyrange.
HIGH…………500〜5000Ｈｚ
STANDARD…10〜600Ｈｚ
※ChangetoHIGHformeasuringover600Hz   
9
Therearefourkindsofsensors.
Cordtype Because the sizeofthissenorisanarrow pathofφ 12.5mm,itismeasurableby
everyplaces.     
Flat type   This is the free pipe of the flat shape with thickness 10mm and 20mm in width.
Especiallyfortherightangledirectioninaparticularlysmallplace. 
Long arm type By using this sensor, it is possible to measure that the main body is hard to
reach.
Electromagnetictype Thisreacttotheelectromagneticvibration,unaffectedbytheneighboring
noise,themeasurementispossibleunderthevibrationdecrementearly. 
However, an application such as the pasting of a thin magnetic film or the magnetic paint is
necessaryforameasurementsideinthecaseofarubberbelt.
ThiscableconnectsU-508withPCs,andtransferthemeasureddata.
Sensor
（Option）
USBcablefortransfer
12
13
４. ExplanationofthepartsofU-508mainbody
Flexiblearmsensor 
（Standard）
11
One-touchconnector
1
Measurebutton 
（Decisionbutton）
10
Powerbutton
2
●Cordtypesensor
Sensor（Option）
12
●Flatflexiblesensor
Sensor
●Longarmsensor
●Electromagneticsensor
USBcableisnotattached. 
Pleaseuseacommercialone.（Mini-B5type）
13
LCSwithbacklight
3
Spanbutton
7
Selectbutton
（Callbuttonof
measuredresults） 
Powersupply:TripleAtypex2pieces
4
Hzbutton
（changeafrequency⇔tension）
8
LED
（Left:Red,Right:Green）
Widthbutton
6
Massbutton
5
O/Rangebutton
Changeafrequencyrange
9
UP/DOWN
button
5
S No 01 5GT
RESULT
TEN N
S No 01 5GT
RESULT
FREQ Hz
Measuredtension
S No 01 5GT
RESULT
FREQ Hz
TEN N
Measuredtension&frequency
S No 01 5GT
FREQUENCY
CAT Hz
RES Hz
Frequency&Catalogfrequency
S No 01 5GT
Tension&Catalogtension
Measuredtension&Frequency
TENSION
CAT N
RES N
LCDscreen
with
backlight.
Thisdisplays
tensionvalue


3
S No 00
M 9 9 9. 9 g/m
W 9 9 9 .9 mm/R
S 9 9 9 9 mm
S No 00 2GT
TENSION
99900 N
Measurement
frequencylevel
H:HIGH
S:STANDARD
MemoryNo.
Themeasuredresult
Inmeasurementofbelttype
Batteryresidualquantity
【OverviewofLCDshowingpattern】
Note:Thiswillbe
shownonlyfromthe
pre-installationone.
Unitmassbeltwidthspanindicationexample
●Tensionnumericalnumberisshownbythreedigitsfrom
0.01〜99,900.   
●Frequencynumericalnumberisshownbythreedigits
from10.0〜5,000Hz.   
●TheredlightandERRORwillbeshownonthescreen
whentheresultofthemeasureisoutofthestandard
range.
NOTE:Ifthestandardrangeoveroccursaftertheresultis
shown,itbeepstwiceuntilthesecondmeasure.
●Abatterytypesignatureatthetimeofthebattery
consumptionisshown.   
LOWBATTblinksonandoffwhenthebatteryislow.
●Abacklightisalwaysonbutitwillturnoffafterno
operationforoneminute.
H No 00 EV8YU
T Belt
V Belt
U Belt
Belt
S No 02 2GT
3GT 2.5
2GT 1.3
01
03
02
1.5GT 0.9
MASSbutton
S No 01
STANDARD
HIGH
ByUPorDOWNbuttontochoosetherange,andpress
MEASUREbuttonforconfirmation.
350mm
※USBcableinNOTincludedinthepackage.
PleaseusetheMINI-B5pin.

7
8
Setupthesensor. Chooseanoptimumsensorandfixinthemainbody
withone-touchconnector.
１
Turnonpower. POWERbutton−PUSH No
No
No00 →No01
No0１→No0２
No00→No02
２
InputNo.bynumericalkeypador
selectbutton.
SELECTbutton−PUSH
【Numberisforwardedsequentaltyeverytime
SELECTbuttonispressed.00→0１→･･→38→39
→00→0１→0２→Inaddition,youcanjumptoany
designatednumberbypressinganumberwith
numerickey.】
Selectingprocedure
SELECTbutton−PUSH（1sttime）
SELECTbutton−PUSH（2ndtime）
Selectingprocedure
2button−PUSH
WhenSELECTbuttonispressedduringthe
followingprocedure（duringdisplayofunitmass,
beltwidth,spanlengthinput,andmeasuredvalue）,
thenumberbeingchosenisdisplayed.
３
EX:Selectfrom00toNo.02
Caseofinputtingaunitmass
manually.
Caseofinputtingtheunitmass
frombelttype.
EX:Select3GT.
［Seepage9forinputdata.］
［Seepage8forinputdata.］
［Seepage8forinputdate.］
EX:Put2.5g/mmwidexmeter
long
Ｉｎｐutthebeltwidth.
EX:Put25.4mm.
MASSbutton−PUSH
[Inputtheunitmass(g/mmWxmL)intheorderof
blinkingpositionondisplayscreenbyuseofnumeric
key.Ifyouinputwrongnumber,press"MASS"button
againtoreturnthecursortothefirst.]
０button−PUSH
０button−PUSH
２button−PUSH
５button−PUSH
●"MASS"button − PUSH（holdingdownmorethan
onesecond）Beltcategory（T,V,U）isshownonscreen
bypressingMASSbuttonnmorethanonesecond.
ByusingUPorDOWNbuttontoselectthebelt
category.
●"MEASURE"button − PUSH
Belttypeisshownonscreen,choosebelttypeby
UPorDOWNbutton
●"DOWN"button − PUSH
Placehighlightedportionon3GT.
●"MEASURE" − PUSH
3GTisdisplayedonscreen.
4-1
4-2
WIDTHbutton−PUSH
【Dothesameasdescribedabove.Whendata
abovealIowablecapacityisinput,thecursorreturns
tothefirst,andinputofdataisrequestedagain.】
０button−PUSH
２button−PUSH
５button−PUSH
４button−PUSH
５
Inputthespanlength. SPANbutton−PUSH
【Dothesameasdescribedabove.】
６
Procedure Description Operation Displayscreen
５.OperationprocedureofU-508
１
2
S＝ □□□ mm
『 Allowableinputcapacity:
０００１ 〜 ９９９９ m m 』
W＝ □□.□mm/R
『 Allowableinputcapacity:
０００.１〜９９９.９m m 』
W＝０ □.□mm/R
W＝０２ .□mm/R
W＝０２５. mm/R
W＝０２５.４m m / R
M＝ □□.□g/m
『 Allowableinputcapacity:
０.１〜９９９.９g / m m×m 』
M＝０ □.□g/m
M＝００ .□g/m
M＝００２. g/m
M＝0 0２.５g / m
Showsfrequencyafter
measurementoftension.
Showstheresultof
measurement.
"Hz"button−PUSH
［Showsfrequencycorrespondingtothemeasured
tension.
When"Hz"buttonispressedonceagain,thedisplay
returnstotensionmode.］
"Hz"button−PUSH
［Showsfrequencycorrespondingtothemeasured
tension.
※When"Hz"buttonispressedonceagain,the
displayreturnstotensionmode.］
Tocallthelatest500records,pressSELECT
buttonmorethanasecondontheSELECTscreen.
SELECTbutton−PUSH
Showsmeasurementfrequency,tension,unitmassat
themeasurement.
Gobacktotheselectscreen.
※Toerasethemeasureddatecanbecleared
collectivelyonlywhenitconnectswithPC.
８-２
9
※PleasechecktheU-508applicationsoftwaremanualforhowtoexportthedatatoPC.      
T Belt
V Belt
U Belt
Belt
S No 02 2GT
S No 02 2GT
3GT 2.5
2GT 1.3
01
03
02
1.5GT 0.9
Showstension. ※Indicationexamplefor
upperlowerlimitareset
Howeverpleasematch
indicationwithtension
indication（frequency
indication）whenyouset
thetensionlevel
（frequency）.Theupper
lowerlimitsettingwitha
PC.
８-１
Startmeasurement. Getsensorincentralspanofthemeasureobject
withouttouchingit.
"MEASURE"button−PUSH:LED(green)blinks,
shows.   
Tovibratethewire,flipthebeltspanwitha
fingeretc.:shows.  
Thefollowingmeasurementisperformedbythe
sensorreceivingsoundwithoutuseofmeasure
buttonfromthesecondtime.
Sincemeasurementisstartedbythesenor
receivingsound,itisstartedaswellevenbya
noiseifithasarelativelystablesoundpressure.
Resultisshownaswellasbeepsoundemitted
andLED（green）turnsonin1.2secondafter
receptionofbeltvibrationsound.
［Afterthesecond
measurement,please
noticethatthescreen
showsthedatapreviously
measured.
Andyouhearthebeep,
thenewdatawillbe
displayedonthescreen.］
７１
２
３
72.4 HIGH
N
TENSION
HIGH：Abovethesetting
GOOD：Withinsettingrange
LOW：Belowthesetting
S No 02 2GT

7
8
Setupthesensor. Chooseanoptimumsensorandfixinthemainbody
withone-touchconnector.
１
Turnonpower. POWERbutton−PUSH No
No
No00 →No01
No0１→No0２
No00→No02
２
InputNo.bynumericalkeypador
selectbutton.
SELECTbutton−PUSH
【Numberisforwardedsequentaltyeverytime
SELECTbuttonispressed.00→0１→･･→38→39
→00→0１→0２→Inaddition,youcanjumptoany
designatednumberbypressinganumberwith
numerickey.】
Selectingprocedure
SELECTbutton−PUSH（1sttime）
SELECTbutton−PUSH（2ndtime）
Selectingprocedure
2button−PUSH
WhenSELECTbuttonispressedduringthe
followingprocedure（duringdisplayofunitmass,
beltwidth,spanlengthinput,andmeasuredvalue）,
thenumberbeingchosenisdisplayed.
３
EX:Selectfrom00toNo.02
Caseofinputtingaunitmass
manually.
Caseofinputtingtheunitmass
frombelttype.
EX:Select3GT.
［Seepage9forinputdata.］
［Seepage8forinputdata.］
［Seepage8forinputdate.］
EX:Put2.5g/mmwidexmeter
long
Ｉｎｐutthebeltwidth.
EX:Put25.4mm.
MASSbutton−PUSH
[Inputtheunitmass(g/mmWxmL)intheorderof
blinkingpositionondisplayscreenbyuseofnumeric
key.Ifyouinputwrongnumber,press"MASS"button
againtoreturnthecursortothefirst.]
０button−PUSH
０button−PUSH
２button−PUSH
５button−PUSH
●"MASS"button − PUSH（holdingdownmorethan
onesecond）Beltcategory（T,V,U）isshownonscreen
bypressingMASSbuttonnmorethanonesecond.
ByusingUPorDOWNbuttontoselectthebelt
category.
●"MEASURE"button − PUSH
Belttypeisshownonscreen,choosebelttypeby
UPorDOWNbutton
●"DOWN"button − PUSH
Placehighlightedportionon3GT.
●"MEASURE" − PUSH
3GTisdisplayedonscreen.
4-1
4-2
WIDTHbutton−PUSH
【Dothesameasdescribedabove.Whendata
abovealIowablecapacityisinput,thecursorreturns
tothefirst,andinputofdataisrequestedagain.】
０button−PUSH
２button−PUSH
５button−PUSH
４button−PUSH
５
Inputthespanlength. SPANbutton−PUSH
【Dothesameasdescribedabove.】
６
Procedure Description Operation Displayscreen
５.OperationprocedureofU-508
１
2
S＝ □□□ mm
『 Allowableinputcapacity:
０００１ 〜 ９９９９ m m 』
W＝ □□.□mm/R
『
Allowableinputcapacity:
０００.１〜９９９.９m m 』
W＝０ □.□mm/R
W＝０２ .□mm/R
W＝０２５. mm/R
W＝０２５.４m m / R
M＝ □□.□g/m
『
Allowableinputcapacity:
０.１〜９９９.９g / m m×m 』
M＝０ □.□g/m
M＝００ .□g/m
M＝００２. g/m
M＝0 0２.５g / m
Showsfrequencyafter
measurementoftension.
Showstheresultof
measurement.
"Hz"button−PUSH
［Showsfrequencycorrespondingtothemeasured
tension.
When"Hz"buttonispressedonceagain,thedisplay
returnstotensionmode.］
"Hz"button−PUSH
［Showsfrequencycorrespondingtothemeasured
tension.
※When"Hz"buttonispressedonceagain,the
displayreturnstotensionmode.］
Tocallthelatest500records,pressSELECT
buttonmorethanasecondontheSELECTscreen.
SELECTbutton−PUSH
Showsmeasurementfrequency,tension,unitmassat
themeasurement.
Gobacktotheselectscreen.
※Toerasethemeasureddatecanbecleared
collectivelyonlywhenitconnectswithPC.
８-２
9
※PleasechecktheU-508applicationsoftwaremanualforhowtoexportthedatatoPC.      
T Belt
V Belt
U Belt
Belt
S No 02 2GT
S No 02 2GT
3GT 2.5
2GT 1.3
01
03
02
1.5GT 0.9
Showstension. ※Indicationexamplefor
upperlowerlimitareset
Howeverpleasematch
indicationwithtension
indication（frequency
indication）whenyouset
thetensionlevel
（frequency）.Theupper
lowerlimitsettingwitha
PC.
８-１
Startmeasurement. Getsensorincentralspanofthemeasureobject
withouttouchingit.
"MEASURE"button−PUSH:LED(green)blinks,
shows.   
Tovibratethewire,flipthebeltspanwitha
fingeretc.:shows.  
Thefollowingmeasurementisperformedbythe
sensorreceivingsoundwithoutuseofmeasure
buttonfromthesecondtime.
Sincemeasurementisstartedbythesenor
receivingsound,itisstartedaswellevenbya
noiseifithasarelativelystablesoundpressure.
Resultisshownaswellasbeepsoundemitted
andLED（green）turnsonin1.2secondafter
receptionofbeltvibrationsound.
［Afterthesecond
measurement,please
noticethatthescreen
showsthedatapreviously
measured.
Andyouhearthebeep,
thenewdatawillbe
displayedonthescreen.］
７１
２
３
72.4 HIGH
N
TENSION
HIGH：Abovethesetting
GOOD：Withinsettingrange
LOW：Belowthesetting
S No 02 2GT

9
10
1
2
3
●Listoftimingbeltunitmassspecifiedasstandardconfiguration
Timingbelt
HTDbelt
GTbelt
4PolychainGTcarbonbelt
5Unittamectrolbelt
6Specialpitchbelt
Toothshape
Pitch（mm）
MXL
2.032
1.2
XXL（50）
3.175
1.4
XL
5.080
2.1
DXL
5.080
1.9
L
9.525
3.1
DL
9.525
3.3
H
12.700
3.8
DH
12.700
4.4
XH
22.225
11.1
XXH
31.750
14.8
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
3M-HTD
3.000
2.4
D3M-HTD
3.000
2.3
5M-HTD
5.000
3.8
D5M-HTD
5.000
4.2
8M-HTD
8.000
6.1
D8M-HTD
8.000
6.3
EV14M
14.000
8.7
EV14M2
14.000
8.3
14M-HTD
14.000
10.0
D14M-HTD
14.000
11.9
20M-HTD
20.000
12.8
8M-GT
8.000
4.7
14M-GT
14.000
8.0
2.0 2.2 3.6 4.3 5.6 9.9 1.9 2.1 3.0 3.5 3.2 3.9 4.1 5.9 5.2 10.7
K S K S S S K S K S K S S S S S
5.000 10.000
10.000 20.000 5.080 9.525 12.700 5.000 8.000 8.000 14.000
T5 T10 AT10 AT20 XL L H 5M 8M 8YU 14M
Toothshape
Pitch（mm）
Unitmass（g/mmwidth×mlength）
Cord
101
1.5875
1.0
102
2.0320
1.3
103
2.1167
1.3
104
2.8222
1.0
111
1.4111
1.1
109
2.1167
1.1
181
2.8222
0.9
25
6.3500
1.7
9109
15.4473
3.0
1.5GT
1.500
0.9
2GT
2.000
1.3
3GT
3.000
2.5
D3GT
3.000
2.5
5GT
5.000
4.0
D5GT
5.000
4.3
EV5GTC
5.000
3.8
EV5GT
5.000
4.0
EV8YU
EV8YUC
EV8YU2
8.000
5.1
8YU
8.000
5.2
8YUF
8.000
6.1
D8YU
8.000
5.4
Refertotheexplanationof"MASS"buttonatpage5and6. Asforthespecialpitchor
thebelt,pleaserefertheunitmasstableonthenextpageandinputcorrectly.
７.  Unitmasstableofthepreinstalledbelt
■Table2:ForU-508,507andU-505,305unitmasstable
Dataofunitmasscanbeinputbyfoursignificantdigits,i.e.threedigitsofintegerand
onedigitbelowdecimalpointing/mmWxmLfrom0.1to999.9g/mmWxmL.
８.  UnitmasstableofGateUnittaAsiatoothshapetimingbelt
Note:Inputwithavalue10timesaslargeasaunitmasslisted(g/cm)usedinU-303(outofsalesmodel).
1.5GT
2GT
3GT
D3GT
5GT
EV5GT
EV5GTC
D5GT
8YU
0.9
1.3
2.5
2.5
4.0
4.0
3.8
4.3
5.2
8YUF
EV8YU
EV8YUC
EV8YU2
D8YU
8MGT
14MGT
EV14M
EV14M2
6.1
5.1
5.1
5.1
5.4
4.7
8.0
8.7
8.3
3M
D3M
5M
D5M
8M
D8M
14M
D14M
20M
2.4
2.3
3.8
4.2
6.1
6.3
10.0
11.9
12.8
MXL
XL
DXL
L
DL
H
DH
XH
XXH
1.2
2.1
1.9
3.1
3.3
3.8
4.4
11.1
14.8
3VX
5VX
8VX
J（V）
PK（V）
L（V）
A（V）
B（V）
C（V）
59.8
165.6
525.6
8.6
20.0
30.4
103.2
166.0
298.8
D（V）
E（V）
3VXPB
5VXPB
5MPF
7MPF
11MRF
（E）PJ
534.6
734.4
75.7
210.9
10.5
25.7
52.1
7.5
Item Unitmass Item Unitmass Item Unitmass Item Unitmass Item Unitmass Item Unitmass
Toothshapebelt（Standardconstruction） Vbelt
■Table1:ToothandVbeltlist
NOTE
Item BELTTYPE
EV5GTC
8YUF
EV8YUC
EV8YU2
EV5GTCarbon
8YUFluorine
EV8YUCarbon
EVⅡ8YU
Item BELTTYPE
8MGT
14MGT
EV14M2
3VXPB
Polychain8MGT
Polychain14MGT
EV
Ⅱ 14M
3VXPoweredband
Item BELTTYPE
5ＶXPB
5MPF
7MPF
11MPF
5VXPoweredband
Polyflex5M
Polyflex7M
Polyflex11M
Item BELTTYPE
＊-K
＊-S
Aramid(Kevlar)cord
Mectrolbelt
Steelcord
Mectrolbelt
(unit:g/mmwidthxmlength) (unit:g/mmwidthxmlength)unitmass:Masspermeterlengthofonerib(g/mlength)
XL-K
L-K
H-K
T5-K
T10-K
XL-S
L-S
H-S
T5-S
1.9
3.0
3.2
2.0
3.6
2.1
3.5
3.9
2.2
T10-S
AT10
AT20
5M-S
8M-S
14M-S
8YU-S
4.3
5.6
9.9
4.1
5.9
10.7
5.2
Mectrolbelt（Longlengthurethanebelt）
６-１.Howtoinputtheunit  
 mass（Refertotheunit
masstablesonnextpage） 
●Tooth&Flattimingbelt
Toinputtheunitmassiswidth(mm)×
length(m)ing/mmwidth×mLength.
1.Datacapacityis000.1〜999.9g/mm
width×mLength
2.Abletoinputwithfoursignificant
digitfiguresofthreecolumnsof
integersanddecimalonecolumn
●Tooth &V beltfrom thepre-install 
data
Push"MASS"bottommorethanone
second,belttypeshowsuponthe
screen.Withusing"UP"or"DOWN" 
buttontoselectandpush"MEASURE"
toset.   
●V,V-RibbedbeltandWire
Inputthemasspermeteroflengthin
"g/mlength"forunitmass. 
Abletoinputbyfoursignificantdigits,
i.e.threedigitsofintegerandonedigit
belowdecimalpointfrom000.1upto
999.9g/mL.Unitmasscorresponds 
toonepieceforV-beltandwire,and
oneribforV-ribbedbelt.
Note:UnitmassofU-508,U-507,and
U-505,U-305is10timestheinputof
conventionaltypeU-303sincetheinput
unithasbeenchanged.  
Therefore,whenavalueisinputin
conventionalunitmass（g/cm2）,
measuredtensionisdisplayedin1/10.
（Nochangeforthemeasuredfrequency
onthescreen）
６-２.Howtoinputthebelt
 widthorthenumberof
 belts(ribs)   
●TimingorFlatbelt
Toputthedateisforbeltwidthis
000.1mm〜999.9mm,threedigitsof
integerandonedigitbelowdecimal
pointinmm.   

●V,Vribbedbelt,Wire 
ForVbeltandWire,putonepiece.
ForVribbedbelt,putthenumberof
ribsofV-ribbedbelt.
６-３.Howtoputthevalueof
 spanlength  
Spanlengthisadistancebetween
contactswithpulley,andcanbe
calculatedbytheffollowingcalculating
formula.    
Alternatively,measurethedistance
betweenpulleycontactswithatape
measureandput.
S：Spanlength （
mm ）
C：Distancebetweenaxes （ mm ）
Dp： Largepulleypitchouterdiameter （ mm ）
dp： Smallpulleypitchouterdiameter （ mm ）
S＝ C − （Dp−dp）
4
22
Flattiming
belt
V-Ribbedbelt
Vbelt
Wire
g/mmW×mL
g/Ribbed×mL
g/onebelt×mL
g/onebelt×mL
mm
mm
mm
mm
ｍｍ
Numberof
Ribbed
1
1
MASS WIDTH SPAN
Item Unitmass Item Unitmass
６.Howtoinputthedata

9
10
1
2
3
●Listoftimingbeltunitmassspecifiedasstandardconfiguration
Timingbelt
HTDbelt
GTbelt
4PolychainGTcarbonbelt
5Unittamectrolbelt
6Specialpitchbelt
Toothshape
Pitch（mm）
MXL
2.032
1.2
XXL（50）
3.175
1.4
XL
5.080
2.1
DXL
5.080
1.9
L
9.525
3.1
DL
9.525
3.3
H
12.700
3.8
DH
12.700
4.4
XH
22.225
11.1
XXH
31.750
14.8
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
Toothshape
Pitch（mm）
Unitmass
（g/mmwidth×mlength）
3M-HTD
3.000
2.4
D3M-HTD
3.000
2.3
5M-HTD
5.000
3.8
D5M-HTD
5.000
4.2
8M-HTD
8.000
6.1
D8M-HTD
8.000
6.3
EV14M
14.000
8.7
EV14M2
14.000
8.3
14M-HTD
14.000
10.0
D14M-HTD
14.000
11.9
20M-HTD
20.000
12.8
8M-GT
8.000
4.7
14M-GT
14.000
8.0
2.0 2.2 3.6 4.3 5.6 9.9 1.9 2.1 3.0 3.5 3.2 3.9 4.1 5.9 5.2 10.7
K S K S S S K S K S K S S S S S
5.000 10.000
10.000 20.000 5.080 9.525 12.700 5.000 8.000 8.000 14.000
T5 T10 AT10 AT20 XL L H 5M 8M 8YU 14M
Toothshape
Pitch（mm）
Unitmass（g/mmwidth×mlength）
Cord
101
1.5875
1.0
102
2.0320
1.3
103
2.1167
1.3
104
2.8222
1.0
111
1.4111
1.1
109
2.1167
1.1
181
2.8222
0.9
25
6.3500
1.7
9109
15.4473
3.0
1.5GT
1.500
0.9
2GT
2.000
1.3
3GT
3.000
2.5
D3GT
3.000
2.5
5GT
5.000
4.0
D5GT
5.000
4.3
EV5GTC
5.000
3.8
EV5GT
5.000
4.0
EV8YU
EV8YUC
EV8YU2
8.000
5.1
8YU
8.000
5.2
8YUF
8.000
6.1
D8YU
8.000
5.4
Refertotheexplanationof"MASS"buttonatpage5and6. Asforthespecialpitchor
thebelt,pleaserefertheunitmasstableonthenextpageandinputcorrectly.
７.  Unitmasstableofthepreinstalledbelt
■Table2:ForU-508,507andU-505,305unitmasstable
Dataofunitmasscanbeinputbyfoursignificantdigits,i.e.threedigitsofintegerand
onedigitbelowdecimalpointing/mmWxmLfrom0.1to999.9g/mmWxmL.
８.  UnitmasstableofGateUnittaAsiatoothshapetimingbelt
Note:Inputwithavalue10timesaslargeasaunitmasslisted(g/cm)usedinU-303(outofsalesmodel).
1.5GT
2GT
3GT
D3GT
5GT
EV5GT
EV5GTC
D5GT
8YU
0.9
1.3
2.5
2.5
4.0
4.0
3.8
4.3
5.2
8YUF
EV8YU
EV8YUC
EV8YU2
D8YU
8MGT
14MGT
EV14M
EV14M2
6.1
5.1
5.1
5.1
5.4
4.7
8.0
8.7
8.3
3M
D3M
5M
D5M
8M
D8M
14M
D14M
20M
2.4
2.3
3.8
4.2
6.1
6.3
10.0
11.9
12.8
MXL
XL
DXL
L
DL
H
DH
XH
XXH
1.2
2.1
1.9
3.1
3.3
3.8
4.4
11.1
14.8
3VX
5VX
8VX
J（V）
PK（V）
L（V）
A（V）
B（V）
C（V）
59.8
165.6
525.6
8.6
20.0
30.4
103.2
166.0
298.8
D（V）
E（V）
3VXPB
5VXPB
5MPF
7MPF
11MRF
（E）PJ
534.6
734.4
75.7
210.9
10.5
25.7
52.1
7.5
Item Unitmass Item Unitmass Item Unitmass Item Unitmass Item Unitmass Item Unitmass
Toothshapebelt（Standardconstruction） Vbelt
■Table1:ToothandVbeltlist
NOTE
Item BELTTYPE
EV5GTC
8YUF
EV8YUC
EV8YU2
EV5GTCarbon
8YUFluorine
EV8YUCarbon
EVⅡ8YU
Item BELTTYPE
8MGT
14MGT
EV14M2
3VXPB
Polychain8MGT
Polychain14MGT
EV
Ⅱ 14M
3VXPoweredband
Item BELTTYPE
5ＶXPB
5MPF
7MPF
11MPF
5VXPoweredband
Polyflex5M
Polyflex7M
Polyflex11M
Item BELTTYPE
＊-K
＊-S
Aramid(Kevlar)cord
Mectrolbelt
Steelcord
Mectrolbelt
(unit:g/mmwidthxmlength) (unit:g/mmwidthxmlength)unitmass:Masspermeterlengthofonerib(g/mlength)
XL-K
L-K
H-K
T5-K
T10-K
XL-S
L-S
H-S
T5-S
1.9
3.0
3.2
2.0
3.6
2.1
3.5
3.9
2.2
T10-S
AT10
AT20
5M-S
8M-S
14M-S
8YU-S
4.3
5.6
9.9
4.1
5.9
10.7
5.2
Mectrolbelt（Longlengthurethanebelt）
６-１.Howtoinputtheunit  
 mass（Refertotheunit
masstablesonnextpage） 
●Tooth&Flattimingbelt
Toinputtheunitmassiswidth(mm)×
length(m)ing/mmwidth×mLength.
1.Datacapacityis000.1〜999.9g/mm
width×mLength
2.Abletoinputwithfoursignificant
digitfiguresofthreecolumnsof
integersanddecimalonecolumn
●Tooth &V beltfrom thepre-install 
data
Push"MASS"bottommorethanone
second,belttypeshowsuponthe
screen.Withusing"UP"or"DOWN" 
buttontoselectandpush"MEASURE"
toset.   
●V,V-RibbedbeltandWire
Inputthemasspermeteroflengthin
"g/mlength"forunitmass. 
Abletoinputbyfoursignificantdigits,
i.e.threedigitsofintegerandonedigit
belowdecimalpointfrom000.1upto
999.9g/mL.Unitmasscorresponds 
toonepieceforV-beltandwire,and
oneribforV-ribbedbelt.
Note:UnitmassofU-508,U-507,and
U-505,U-305is10timestheinputof
conventionaltypeU-303sincetheinput
unithasbeenchanged.  
Therefore,whenavalueisinputin
conventionalunitmass（g/cm2）,
measuredtensionisdisplayedin1/10.
（Nochangeforthemeasuredfrequency
onthescreen）
６-２.Howtoinputthebelt
 widthorthenumberof
 belts(ribs)   
●TimingorFlatbelt
Toputthedateisforbeltwidthis
000.1mm〜999.9mm,threedigitsof
integerandonedigitbelowdecimal
pointinmm.   

●V,Vribbedbelt,Wire 
ForVbeltandWire,putonepiece.
ForVribbedbelt,putthenumberof
ribsofV-ribbedbelt.
６-３.Howtoputthevalueof
 spanlength  
Spanlengthisadistancebetween
contactswithpulley,andcanbe
calculatedbytheffollowingcalculating
formula.    
Alternatively,measurethedistance
betweenpulleycontactswithatape
measureandput.
S：Spanlength （
mm ）
C：Distancebetweenaxes （ mm ）
Dp： Largepulleypitchouterdiameter （ mm ）
dp： Smallpulleypitchouterdiameter （ mm ）
S＝ C − （Dp−dp）
4
22
Flattiming
belt
V-Ribbedbelt
Vbelt
Wire
g/mmW×mL
g/Ribbed×mL
g/onebelt×mL
g/onebelt×mL
mm
mm
mm
mm
ｍｍ
Numberof
Ribbed
1
1
MASS WIDTH SPAN
Item Unitmass Item Unitmass
６.Howtoinputthedata

11
12
3PollychainGTCarbonBelt
※Contactusabout20Mtype.
１０ .  ThestandardinstallationtensiontableoftheGUAtimingbelt
1TimingBelt
2GT&HTDBelt
Width
（
mm ）
Tooth
Shape
Width
（
mm ）
Tooth
Shape
Width
（
mm ）
Tooth
Shape
Width
（
mm ）
Tooth
Shape
Tooth
Shape
1.5GT
1.5 2.0 2.5 3.0 4.0 6.0
3.4 4.4 5.6 7.8 12.6 19.6
9.0 12 15 20 25 30 40 50 55 60 70 85 100 115 130
2GT
EV5GT
4.3 5.2 6.4 9.4 15.8 25.2 34.6 44.1
3GT・3M 29 44 59 74 98
5GT・5M 55 75.9 96
210 285 350
137 178 220 302
8YU・8M
17871 98 125 232 286 393
14M
410 600 836.7 920 1100
EV14M
150 170
8MGT
14MGT
MIN
MAX
MIN
MAX
320240190 340 400 480 580 640 800 970 1000 1130 1290
430330260 460 540 650 780 870 1080 1300 1340 1520 1730
15201230820 1640 2050 2460 2790 2870 3280 3690 4100 4720 5130
205016701100 2220 2780 3330 3770 3890 4440 5000 5550 6380 6940
5330
7220
201512 21 25 30 36 40 50 62 7060 80
373020 40 50 60 68 70 80 100 11590 125 130
Width
 （ mm ）
Width2（shapetype）
Tooth
Shape
MXL
3.2 4.8 6.4
（25） （31） （37） （50） （75） （100）（150）（200）（300）（400）（500）
7.9 9.5
2.9 5.1 7.6 10.3 11.8 16.4
XL
L
H
XH
XXH
13.7 19.6 24.5 34.5 55.0 75.1
52.0 87.3 123.0 271.6198.8
222 312 668486
909 20201430
1120 24801750 3190
12.7 19.1 25.4 38.1 50.8 101.6
10301050
76.2 127.0
1300
560 740 1100 1200 1400 380034002900250021001800
441 618
963.5
775 902 1000 1190 209017901470
EV8YU
235 294 343 500 765701 892 1100637
760
20
2.3
Unit（N）
Unit（N）
4UnittaMectrolBelt
T5
10 15 20 25 30 40
29 39 49 59 19698
50 55 60 80 85 100
T10
AT20
129 173 216 259 863431
AT5 773376
AT10 637183 235 294 343
637 637 1020 1275235 294 343
1301
637235 343
618 902 1470 1792
1301
5M
775 1792
14M
8YU
8M
220
20
60 99 137
376220
60 137
178
Unit（N）
XL
12.7 19.1 25.4 50.8 101.6
（050）（075）（100）（200）（400）
172 229 457 914
L248165 330 660 1321
296 394 787 1575
H
114
Unit（N）
Unit（N）
[M(g/mlength)=Masspermeterlengthofonerib(g/mlength)xTensioncorrectionfactor]
1SuperHCtype
2Polyflextype
3MicroVtype
4StandardVtype
Inputitem
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
3VXSingle
68.0×0.88＝59.8
3VXPowerband
87.0×0.87＝75.7
5VXSingle
182.0×0.91＝165.6
5VXPowerband
237.0×0.89＝210.9
8VSingle
657.0×0.8＝525.6
Inputitem
5M
11.0×0.95＝10.5
7M
27.0×0.95＝25.7
11M
56.0×0.93＝52.1
Inputitem Jsection
9.0×0.95＝8.6
Lsection
32.0×0.95＝30.4
PKsection
21.0×0.95＝20.0
Inputitem
A
120.0×0.86＝103.2
B
200.0×0.83＝166.0
C
360.0×0.83＝298.8
D
660.0×0.81＝534.6
E
1020.0×0.72＝734.4
TheVbelthashighcomparativerigidity,thegapofrevisionisnecessaryforthe
actualandmeasuredtensionvalueintherangeofthestandardinstallationtension.
Therefore,itshouldbeadoptedasWEIGHTlevelwhichiscalculatedbythefollowing;
９. TheunitmasstableofVbeltmadebyGates
■Table3:SpecializedunitmasstableforU508,507,505,503
※ContactusforunitmassoftoothedbeltforautomobileengineandV-ribbedbeltfor
drivingautomobileengineauxiliaryequipment.
Note:InquiretousfortheunitmassofV-ribbedbeltandtoothbeltforautomobileengines
 withandautomobileenginesupplementaryplanedrive.
Width
 （ mm ）
Width2（shapetype）

11
12
3PollychainGTCarbonBelt
※Contactusabout20Mtype.
１０ .  ThestandardinstallationtensiontableoftheGUAtimingbelt
1TimingBelt
2GT&HTDBelt
Width
（
mm ）
Tooth
Shape
Width
（
mm ）
Tooth
Shape
Width
（
mm ）
Tooth
Shape
Width
（
mm ）
Tooth
Shape
Tooth
Shape
1.5GT
1.5 2.0 2.5 3.0 4.0 6.0
3.4 4.4 5.6 7.8 12.6 19.6
9.0 12 15 20 25 30 40 50 55 60 70 85 100 115 130
2GT
EV5GT
4.3 5.2 6.4 9.4 15.8 25.2 34.6 44.1
3GT・3M 29 44 59 74 98
5GT・5M 55 75.9 96
210 285 350
137 178 220 302
8YU・8M
17871 98 125 232 286 393
14M
410 600 836.7 920 1100
EV14M
150 170
8MGT
14MGT
MIN
MAX
MIN
MAX
320240190 340 400 480 580 640 800 970 1000 1130 1290
430330260 460 540 650 780 870 1080 1300 1340 1520 1730
15201230820 1640 2050 2460 2790 2870 3280 3690 4100 4720 5130
205016701100 2220 2780 3330 3770 3890 4440 5000 5550 6380 6940
5330
7220
201512 21 25 30 36 40 50 62 7060 80
373020 40 50 60 68 70 80 100 11590 125 130
Width
 （ mm ）
Width2（shapetype）
Tooth
Shape
MXL
3.2 4.8 6.4
（25） （31） （37） （50） （75） （100）（150）（200）（300）（400）（500）
7.9 9.5
2.9 5.1 7.6 10.3 11.8 16.4
XL
L
H
XH
XXH
13.7 19.6 24.5 34.5 55.0 75.1
52.0 87.3 123.0 271.6198.8
222 312 668486
909 20201430
1120 24801750 3190
12.7 19.1 25.4 38.1 50.8 101.6
10301050
76.2 127.0
1300
560 740 1100 1200 1400 380034002900250021001800
441 618
963.5
775 902 1000 1190 209017901470
EV8YU
235 294 343 500 765701 892 1100637
760
20
2.3
Unit（N）
Unit（N）
4UnittaMectrolBelt
T5
10 15 20 25 30 40
29 39 49 59 19698
50 55 60 80 85 100
T10
AT20
129 173 216 259 863431
AT5 773376
AT10 637183 235 294 343
637 637 1020 1275235 294 343
1301
637235 343
618 902 1470 1792
1301
5M
775 1792
14M
8YU
8M
220
20
60 99 137
376220
60 137
178
Unit（N）
XL
12.7 19.1 25.4 50.8 101.6
（050）（075）（100）（200）（400）
172 229 457 914
L248165 330 660 1321
296 394 787 1575
H
114
Unit（N）
Unit（N）
[M(g/mlength)=Masspermeterlengthofonerib(g/mlength)xTensioncorrectionfactor]
1SuperHCtype
2Polyflextype
3MicroVtype
4StandardVtype
Inputitem
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
WEIGHT
(Massxcompensation)
coefficient
per1rib1mlength
3VXSingle
68.0×0.88＝59.8
3VXPowerband
87.0×0.87＝75.7
5VXSingle
182.0×0.91＝165.6
5VXPowerband
237.0×0.89＝210.9
8VSingle
657.0×0.8＝525.6
Inputitem
5M
11.0×0.95＝10.5
7M
27.0×0.95＝25.7
11M
56.0×0.93＝52.1
Inputitem Jsection
9.0×0.95＝8.6
Lsection
32.0×0.95＝30.4
PKsection
21.0×0.95＝20.0
Inputitem
A
120.0×0.86＝103.2
B
200.0×0.83＝166.0
C
360.0×0.83＝298.8
D
660.0×0.81＝534.6
E
1020.0×0.72＝734.4
TheVbelthashighcomparativerigidity,thegapofrevisionisnecessaryforthe
actualandmeasuredtensionvalueintherangeofthestandardinstallationtension.
Therefore,itshouldbeadoptedasWEIGHTlevelwhichiscalculatedbythefollowing;
９. TheunitmasstableofVbeltmadebyGates
■Table3:SpecializedunitmasstableforU508,507,505,503
※ContactusforunitmassoftoothedbeltforautomobileengineandV-ribbedbeltfor
drivingautomobileengineauxiliaryequipment.
Note:InquiretousfortheunitmassofV-ribbedbeltandtoothbeltforautomobileengines
 withandautomobileenginesupplementaryplanedrive.
Width
 （ mm ）
Width2（shapetype）

13
14
Thankyouforchoosingoursonictensionmeter(U-508).
Weguaranteeforoneyearforthemainbodyandsixmonthsforthesensor.
Ifoursonictensionmeter(U-508)failsduetoamanufacturingorworkmanshipdefect
duringtheperiod,werepairitfreeofcharge.
Pleasecontactourdistributorfromwhichyoupurchasedfortherepair.(Seethe
enclosedwarranty.)
Whentheofficialapprovalisrequired,directthesensortoacommunicator
whichemitsstablefrequencysoundfrom10to5000Hz,andmeasurethesamewayas
measuringtension.Thecalibrationisenabledeasily.
Tensionmeterofficialapprovaldevice(U-305-OS1)isalsointhemarket.
Ifneeded,pleasecontactoursalesdepartmentforpaidofficialapproval.
12.Guarantee&RepairGuidelines
Abouttheinstallationtensionlevelofourtoothbelt,thegapwillnotoccurbetweenU-508measurementandtruetensionintherangeofNote1
andNote3.Soitisnotnecessarytosetatensioncompensatingrate.
Note1）Asforthemeasuringinstallationtension,setthebeltonthemachinefirstandmeasuretheaveragetensionofstretchandlooseside
ofthebeltafterspinningseveraltimestomakethemachinerunsmoothly.Ifbothspanshavethedifferenceofmorethan30%,please
adjustthemandmeasureagain.
Note2）Measurewithaspanhavingthelengthmorethan20timesthetoothpitch.
（Becauseahighervaluethanactualisshowedattheshortrangetobeaffectedbytherigidityofthebeltitself.)
Note3）Setthetensionrangemorethan1/3ofstandardinstallationtension.
（Becauseahighervaluethanactualisshowedatthelowtensiontobeaffectedbyrigidityofbeltitself.)
Alsobythemeasuringmethodofourtensionmeter,measurementinanextremelylowtensionrangeissometimesimpossible.
Note4）
Asforthespecialbeltlikeawideandback-ribbedbeltonitsbackforconveying,thegapbetweenthetruetensionvalueispresumed,
sothatsimplecalibrationisrequiredforcheckingtensionwhichneedscomparativeprecision.
Asforexperiencedmachinesinstallthebeltfollowingtheprocedureprovidedforacorrespondingmachine,itiscapableofmanagingtension
bysettingcyclenumericalvaluewhichapprovedbyU-508afterward.
■MainBody
■Accessories
●U-508
●Option
●PowerSupply:TwotripleAbatteries.Alkaline
batteryisrecommended.
●OverallSize:160(H)×59(W)×26(26) 
●Mass:120g
●Temperatureandhumidityrangeforuseand
storage:-10〜-50℃,80%
(freefromcondensation)
１１.SpecificationofU-508
1）Flexibletypesensor
・Sensorouterdiameter:12.5mm
・Totallength:170mm
・Measurablefrequencyband:10Hz〜5000Hz

2）Softcaseforcarrying 
・
Capableofcontainingthebodyoftensionmeter,
flexibletypesensoretc.  
・ Totallength:170mm
・ Measurablefrequencyband:10Hz〜5000Hz
3）TwotripleAbatteries
4）OperationmanualofU-508
5）Operatingproceduresheetforcarrying
6）Inspectionacceptancecertificate
7）Warranty
8）TwoUSBconnectingcaps(oneisforaspare)
9）Operatingmanualofapplicationsoftwarefor
 U-508
※PleaseusetheMINI-B5asUSBconnector
1）Flatflexiblesensor
・Sensorouterdiameter:Thickness10mm,
Width20mm
・Totallength:170mm
・Measurablefrequencyband:10Hz〜5000Hz
2）Longarmsensor
・Sensorouterdiameter:12.5mm
・Totallength:350mm
・Measurablefrequencyband:10Hz〜5000Hz
3）Electromagneticsensor
・Totallength:1m
・
Measurablefrequencyband:10Hz〜5000Hz
4）Cordtypesensor
・Sensorouterdiameter:12.5mm
・Totallength:1m
・
Measurablefrequencyband:10Hz〜5000Hz

13
14
Thankyouforchoosingoursonictensionmeter(U-508).
Weguaranteeforoneyearforthemainbodyandsixmonthsforthesensor.
Ifoursonictensionmeter(U-508)failsduetoamanufacturingorworkmanshipdefect
duringtheperiod,werepairitfreeofcharge.
Pleasecontactourdistributorfromwhichyoupurchasedfortherepair.(Seethe
enclosedwarranty.)
Whentheofficialapprovalisrequired,directthesensortoacommunicator
whichemitsstablefrequencysoundfrom10to5000Hz,andmeasurethesamewayas
measuringtension.Thecalibrationisenabledeasily.
Tensionmeterofficialapprovaldevice(U-305-OS1)isalsointhemarket.
Ifneeded,pleasecontactoursalesdepartmentforpaidofficialapproval.
12.Guarantee&RepairGuidelines
Abouttheinstallationtensionlevelofourtoothbelt,thegapwillnotoccurbetweenU-508measurementandtruetensionintherangeofNote1
andNote3.Soitisnotnecessarytosetatensioncompensatingrate.
Note1）Asforthemeasuringinstallationtension,setthebeltonthemachinefirstandmeasuretheaveragetensionofstretchandlooseside
ofthebeltafterspinningseveraltimestomakethemachinerunsmoothly.Ifbothspanshavethedifferenceofmorethan30%,please
adjustthemandmeasureagain.
Note2）Measurewithaspanhavingthelengthmorethan20timesthetoothpitch.
（Becauseahighervaluethanactualisshowedattheshortrangetobeaffectedbytherigidityofthebeltitself.)
Note3）Setthetensionrangemorethan1/3ofstandardinstallationtension.
（Becauseahighervaluethanactualisshowedatthelowtensiontobeaffectedbyrigidityofbeltitself.)
Alsobythemeasuringmethodofourtensionmeter,measurementinanextremelylowtensionrangeissometimesimpossible.
Note4）
Asforthespecialbeltlikeawideandback-ribbedbeltonitsbackforconveying,thegapbetweenthetruetensionvalueispresumed,
sothatsimplecalibrationisrequiredforcheckingtensionwhichneedscomparativeprecision.
Asforexperiencedmachinesinstallthebeltfollowingtheprocedureprovidedforacorrespondingmachine,itiscapableofmanagingtension
bysettingcyclenumericalvaluewhichapprovedbyU-508afterward.
■MainBody
■Accessories
●U-508
●Option
●PowerSupply:TwotripleAbatteries.Alkaline
batteryisrecommended.
●OverallSize:160(H)×59(W)×26(26) 
●Mass:120g
●Temperatureandhumidityrangeforuseand
storage:-10〜-50℃,80%
(freefromcondensation)
１１.SpecificationofU-508
1）Flexibletypesensor
・Sensorouterdiameter:12.5mm
・Totallength:170mm
・Measurablefrequencyband:10Hz〜5000Hz

2）Softcaseforcarrying 
・
Capableofcontainingthebodyoftensionmeter,
flexibletypesensoretc.  
・ Totallength:170mm
・ Measurablefrequencyband:10Hz〜5000Hz
3）TwotripleAbatteries
4）OperationmanualofU-508
5）Operatingproceduresheetforcarrying
6）Inspectionacceptancecertificate
7）Warranty
8）TwoUSBconnectingcaps(oneisforaspare)
9）Operatingmanualofapplicationsoftwarefor
 U-508
※PleaseusetheMINI-B5asUSBconnector
1）Flatflexiblesensor
・Sensorouterdiameter:Thickness10mm,
Width20mm
・Totallength:170mm
・Measurablefrequencyband:10Hz〜5000Hz
2）Longarmsensor
・Sensorouterdiameter:12.5mm
・Totallength:350mm
・Measurablefrequencyband:10Hz〜5000Hz
3）Electromagneticsensor
・Totallength:1m
・
Measurablefrequencyband:10Hz〜5000Hz
4）Cordtypesensor
・Sensorouterdiameter:12.5mm
・Totallength:1m
・
Measurablefrequencyband:10Hz〜5000Hz

SonicBeltTensionMeter
U-508OperationManual
Contents
１.Precautions P１
P３
P４
P５
P７
P８
２.Briefsummary,caution&check
pointsforthefailure
３.MeasurementprincipleofU-508
４.ExplanationofthepartsofU-508
mainbody
５.OperationprocedureofU-508
６.Howtoinputthedata
６-１Howtoinputtheunitmass
７.Unitmasstableofthe
preinstalledbelt
６-２Howtoinputthebeltwidthorthenumberofbelts(ribs)
６-３Howtoinputthevalueofspanlength
８.UnitmasstableofGateUnitta
Asiatoothshapetimingbelt
９.TheunitmasstableofVbelt
madebyGates
１０.Thestandardinstallationtension
 tableoftheGUAtimingbelt
P９
P １０
１１.SpecificationofU-508
１２.Guarantee&RepairGuidelines
P １２
P１1
P１0
P １３
ThismanualdescribesoperationprocedureofU-508.
Pleasereadthismanualthoroughlybeforeforfulluseoffunctions.
U-508MANUALV01
HEADOFFICE4-26SAKURAGAWA4-CHOME,NANIWA-KUOSAKA556-0022.JAPAN
TEL:[phone] FAX:[phone]