YOKOGAWA TY710 User manual

IM TY720
4th Edition
Jan. 2011(KYOU)
Japanese/
English
この取扱説明書は，いつでも使用できるよう
大切に保管してください。
Store this manual in a safe place for future reference.
TY710, TY720
Digital Multimeter
ディジタルマルチメータ
User's
Manual
保証書付

57
Thank you for purchasing our Model TY710, TY720 Digital Multimeter.
This user’s manual describes the specifications and handling precaution for this Digital
Multimeter.
Before using this Digital Multimeter, thoroughly read this manual to get a clear understanding
on proper use.
Always observe the following instructions.
Failure to do so may impair the protection provided by the instrument and probes, and may
result in electrical shock or other dangers that may lead to serious injury or the loss of life.
Yokogawa is in no way liable for any damage resulting from the user’s mishandling of the
product.
For safe use of this product, the following safety symbols are used on the product:
nAbout This Manual
• Everyefforthasbeenmadetoensureaccuracyinthepreparationofthismanual.
However, should any errors or omissions come to the attention of the user, please contact
Yokogawa.
• Thecontentsofthismanualaresubjecttochangewithoutpriornoticebecauseof
improvement in performance or function.
• Allrightsreserved.Nopartofthismanualmaybereproducedinanyfromwithout
Yokogawa's written permission.

58
Regarding Safe Use of This Product
For safe use of this product, the following safety symbols are used on the product and manual:
WARNING
This indicates that the operator must refer to an explanation in the
instruction manual in order to avoid the risk of serious injury or the loss
of life.
CAUTION
This indicates that the operator must refer to an explanation in the
instruction manual in order to avoid the risk of injury or damage to the
product.
Note This indicates information that is essential for handling the instrument
or should be noted in order to familiarize yourself with the instrument’s
operating procedures and/or functions.
Danger! Handle with Care
This symbol indicates that the operator must refer to an explanation in the
instruction manual in order to avoid risk of injury or death of personnel
or damage to the instrument.
Double Insulation
This symbol indicates double insulation or reinforced insulation.
Direct Current
This symbol indicates DC voltage/current.
Alternating Current
This symbol indicates AC voltage/current.
DC/AC
This symbol indicates AC and DC.
Fuse
This symbol indicates a fuse.
Battery
This symbol indicates a battery.
Ground
This symbol indicates ground (earth).

59
WARNING
nAlways observe the following instructions. Failure to do so may result in
electrical shock or other dangers that may lead to serious injury or the loss of
life.
Testing leads / Testing leads with alligator clip(optional accessory)
• UsetheprobessuppliedbyYokogawawiththisinstrument.
• Donotusetestingleads/testingleadswithalligatorclipthathave deterioratedorare
defective.
Check testing leads/testing leads with alligator clip continuity.
• Disconnect testing leads/testing leads with alligator clip from the circuit under test before
opening the casing to replace the batteries or for any other reason.
• Disconnect testing leads/testing leads with alligator clip from the circuit under test before
attaching/detaching the testing leads/testing leads with alligator clip to/from the instrument.
• Disconnecttestingleads/testingleadswithalligatorclipfromtheinstrumentbeforeopening
the casing to replace the batteries or for any other reason.
• Acapisprovidedonthetipofatestinglead.
Useatestingleadwiththecaponforsafety(safetystandards:EN61010-031).
•Do not use the alligator clip of testing leads being loosen or removed conditions.
Casing
• Donotusetheinstrumentifthereisanydamagetothecasingorwhenthecasingis
removed.
Fuses
• Usefusesofthespeciedratingwhenthefuseisreplaced.
Operating Environment
• Do not operate the instrument in an atmosphere where any ammable or explosive gas is
present.
• Avoid using the instrument if it hasbeen exposed to rain or moistureor if your hands are
wet.
Disassembly
• Noperson,exceptpersonnelfromYokogawa,isauthorizedtodisassemblethisinstrument.

60
Concernant l’usage en toute sécurité de ce produit
Symboles utilisés sur les appareils et dans le manuel d’instruction:
Avertissement
Indique un danger. Attire l’attention sur une utilisation quipourrait
engendrer des accidents susceptibles de provoquer des blessures qui
peuvent éventuellement s’avérer mortelles.
Attention
Indique un danger. Attire l’attention sur une utilisation qui pourrait
engendrer une blessure personnelle et/ou être préjudiciable au produit.
Remarque Indique les informations essentielles à la manipulation de l’instrument
ouquidoiventêtreprisesencompteandevousfamiliariseravecles
procédures d’utilisation et/ou les fonctions de l’instrument.
Danger ! Manipuler avec soin.
Ce symbole indique que l’opérateur doit se reporter à une explication
donnéeparlemanueld’instruction,and’évitertoutaccidentsusceptible
de provoquer des blessures au personnel qui peuvent éventuellement
s’avérer mortelles, ou de protéger l’appareil.
Double isolation
Ce symbole indique une double isolation ou une isolation renforcée.
Courant continu
Ce symbole indique une tension/intensité C.C.
Courant alternatif
Ce symbole indique une tension/intensité C.A.
C.C./C.A.
Ce symbole indique le C.A. et le C.C.
Fusible
Ce symbole indique un fusible.
Batterie
Ce symbole indique une batterie.
Masse
Ce symbole indique la masse (terre).

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Avertissement
nLes précautions suivantes doivent être prises. Dans le cas contraire,
des accidents susceptibles de provoquer des blessures qui peuvent
éventuellement s’avérer mortelles résultant de dangers tels que des chocs
électriques, ou un préjudice au produit, risquent de survenir.
Fils de test / Fils de test à pince crocodile (accessoire en option)
• UtilisezlessondesfourniesparYokogawaaveccetinstrument.
•
N’utilisezpaslesFilsdetest/Filsdetestàpincecrocodilequiontdétérioréousontdéfectueux.
 VériezlacontinuitédesFilsdetest/Filsdetestàpincecrocodile.
• Démontez les Fils de test / Fils de test à pince crocodile du circuit à l’essai avant d’ouvrir le
boîtier pour remplacer les batteries ou pour n’importe quelle autre raison.
• Démontez les Fils de test / Fils de test à pince crocodile du circuit à l’essai avant de brancher
ou débrancher les Fils de test / Fils de test à pince crocodile vers/à partir de l’instrument.
• Démontez les Fils de test / Fils de test à pince crocodile de l’instrument avant d’ouvrir le
boîtier pour remplacer les batteries ou pour n’importe quelle autre raison.
• Unchapeauestfournisurleboutd’unldetest.
 Utilisez un fil de test avec le chapeau placé dessus pour une bonne sécurité (normes de
sécurité:EN61010-031).
• N'utilisezpasleslsdetestdontlespincescrocodilesontdujeuouontétéretirées.
Boîtier
• N’utilisezpasl’instruments’ilyaundommagequelconqueauboîtierouquandleboîtierest
enlevé.
Fusibles
• Utilisezlesfusiblesavecl’évaluationspéciéequandlefusibleestremplacé.
Environnement d’opération
• N’utilisez pasl’instrumentlàoùungazoudelavapeur(atmosphère)inflammableou
explosive quelconque est présente.
• Évitez d’utiliser l’instrument s’il a été exposé à la pluie ou à l’humidité ou si vos mains sont
humides.
Démontage
• Aucune personne, excepté le personnel deYokogawa, n’est autorisée à démonter cet
instrument.

62
Contents
1. Overview...........................................................................................................65
2. Measurement Category..................................................................................... 66
3. Specications ....................................................................................................67
3.1 GeneralSpecications ............................................................................67
3.2 Accuracy .................................................................................................70
4. Operation ..........................................................................................................78
4.1 Precautions Before Measurement........................................................... 78
4.2 Components ............................................................................................ 79
4.3 MeasuringInstructions............................................................................84
4.3.1 ACVoltageMeasurement ................................................................84
4.3.2 DCVoltageMeasurement ................................................................84
4.3.3 DC+ACVoltageMeasurement ........................................................85
4.3.4 DC,ACVoltageDualDisplay .........................................................85
4.3.5 ResistanceMeasurement..................................................................85
4.3.6 LowPower-Ω...................................................................................86
4.3.7 Continuity Check.............................................................................86
4.3.8 Diode Test........................................................................................ 87
4.3.9 Temperature Measurement...............................................................88
4.3.10 Current Measurement..................................................................... 89
4.3.11DC+ACCurrentMeasurement.......................................................90
4.3.12 DC,AC Current Dual Display........................................................ 91
4.3.13 Capacitor Measurement..................................................................91
4.3.14 Frequency Measurement, Duty cycle ratio.....................................92
4.3.15
FunctiontochangeRMSdetectionto/fromMEANdetection
mode........................................................................................................93
4.3.16Functiontoturnthelteron/off .....................................................93
4.3.17AUTOHOLDFunction.................................................................. 94
4.3.18PEAKHOLDFunction ..................................................................95
4.3.19Relativeandpercentagecalculation ...............................................95
4.3.20 Decibel calculation......................................................................... 96
4.3.21 MIN/MAX/AVGFunction .............................................................97
4.4 Memory Function....................................................................................98
4.5 AUTOPOWEROFFFunction.............................................................101
4.6 Set-upFunction.....................................................................................102
4.7 AdditionalfunctionssimplysetwhenPOWERON.............................105
4.8 Averaging Function...............................................................................105
4.9 5000 display mode................................................................................106
4.10LCDCheck .........................................................................................106

63
5. UserCalibrationFunction...............................................................................107
6. BatteryandFuseReplacement ....................................................................... 112
6.1 BatteryReplacement............................................................................. 112
6.2 FuseReplacement ................................................................................. 113
7. Calibration and Maintenance.......................................................................... 114
8 Disposing the Product..................................................................................... 114

65
1. Overview
lFast and more accurate measurement
The TY710 and TY720 digital multimeters use Σmodulation for A/D conversion, which
enable fast and more accurate measurement.
lDisplay
5-digit (LCD)
Maximum Reading: 50000
Bar graph indicator
lSupports a variety of measurement function
Measurement function
DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature,
Capacitor, Duty cycle ratio, Decibel (dBV, dBm), Continuity Check, Diode Test,
 LowPower-Ω*
Other functions
 DataHold(D•H),AutoHold(A•H),PeakHold*(P•H),RangeHold(R•H),
Maximum value (MAX), Minimum value (MIN), Average value (AVG),
Zero Adjustment (Capacitor, Resistance), Relative values, Save to Memory,
LCD backlight.
  LowPower-Ω:Measuresresistanceunderlowmeasurementcurrent.
  *:FormodelTY720only
lSwitching detection modes
Effective value (root mean square value) detection (RMS) and mean value detection (MEAN)
can be switched during AC voltage or AC current measurement (TY720 only).
l Low-passlter
 Thelow-pass lter canbeswitched on/offduringAC voltage orAC currentmeasurement
(TY720 only).
lCommunication: optional communication package is required
• Measurement data can be transferred to a PC using an optional USB communication
package.
The data can be read by certain applications to make trend graphs or can be converted
intoExcelles.
• ThedatacanalsobeoutputfromanoptionalprinterviaanoptionalRS232cable.
lSafety design
Complied standards: CE standards
 Usesacurrent-inputterminalshutterforpreventingwronginput.
 Useshigh-performanceUL-standardfuses.

66
2. Measurement Category
WARNING
nMeasurement Category of TY710, TY720
The restrictions on the maximum voltage level for which the TY710, TY720 can be used,
dependonthemeasurementcategoriesspeciedbythesafetystandards.
Do not apply any input level higher than maximum allowable input.
AC/DC 1000V CAT. Ⅲ/ AC/DC 600V CAT. Ⅳ
nCategory of Testing leads
With: 1000V 10A CAT. Ⅲ/ 600V 10ACAT. Ⅳ
Without: 1000V 10A CAT. Ⅱ/ 600V 10ACAT. Ⅱ
Measurement
category Description Remarks
ⅠCAT. I For measurements performed on circuits not
directly connected to MAINS.
ⅡCAT. II For measurements performed on circuits directly
connected to the low voltage installation. Appliances, portable equipment, ect.
ⅢCAT.III For measurements performed in the building
installation. Distribution board, circuit breaker, ect.
ⅣCAT. ⅣFor measurements performed all the source of the
low-voltage installation. Overhead wire, cable systems, ect.
Internal Wiring
Outlet
Entrance
Cable
Fixed Equipment,
etc.
Distribution
Board
CAT.II
Equipment
CAT.I
CAT.IV
CAT.III
Note
Radiation immunity affects the accuracy of the TY710, TY720 under the conditions
speciedinEN61326-1.
 Useofthisinstrumentislimitedtodomestic,commercial,andlightindustry
applications. If equipment generating strong electromagnetic interference is located
nearly, the instrument may malfunction.

67
3. Specications
3.1 GeneralSpecications
Measurement function:
DC Voltage, AC Voltage, DC Current, AC Current, Resistance,
Frequency, Temperature, Capacitor, Duty cycle ratio,
Decibel(dBV,dBm),ContinuityCheck,DiodeTest,LowPower-Ω*
Otherfunctions: DataHold(D•H),AutoHold(A•H),PeakHold*(P•H),
RangeHold(R•H),Maximumvalue(MAX),Minimumvalue(MIN),
Average value (AVG), ZeroAdjustment (Capacitor, Resistance),
Relative values, Save to Memory, LCD backlight.
 LowPower-Ω:Measuresresistanceunderlowmeasurementcurrent.
 *:FormodelTY720only
Measuring method: Σmodulation
Display: 5-digit (LCD)/7-segment
Maximum Reading: 50000
Polarity Indicator: “–” Appears automatically when the polarity is
negative
Overrange Indicator: “ OL ”
Low-battery Indicator: “ ” Appears when the batteries become
low
Measurement cycle: 6 times per second
(except frequency measurement: one times per second, Resistance
measurement : four times per second, capacitor measurement (50mF):
max.0.03timepersecond)
Bar graph display 15 times per second
Operating temperature and humidity ranges:
-20 to 55ºC, 80%RH or less (no condensation)
70%RH or less at 40 to 55ºC.
Storage temperature and humidity ranges:
-40 to 70ºC, 70%RH or less (no condensation)
Temperaturecoefcient:
(Accuracyat23±5ºC)×0.05/ºCorless
At -20 to 18ºC and 28 to 55ºC
When continuously DCV and DCAmeasuring, add 1digit / ºC
 (exceptfor50mV,5A,10Arange,add3digits/ºC).

68
Power supply: AA-size (R6) 1.5V batteries: 4
Battery life: Approximately 120 hours
(Operating hours of alkaline batteries when in DC voltage-mode.)
Note: The battery life varies depending on the operating conditions.
Insulationresistance:1000VDC,100MΩormore
Withstandvoltage: 6.88kVrmsACforveseconds
(across input terminals and casing)
Externaldimensions: Approximately90(W)×192(H)×49(D)mm
Weight: Approximately 560g (including batteries)
Complied standards: Safety standards
  EN61010-1,EN61010-031
CAT.III (Max. input voltage: AC/DC1000V)
CAT.IV (Max. input voltage:AC/DC600V)
Pollution degree 2, indoor use,
2000m max. above sea level
  UL61010-1,CAN/CSA-C22.2No.61010-1
  UL61010-031,CAN/CSA-C22.2No.61010-031
EMC standards
  EN61326-1ClassB
  EN61326-2-2
EN55011 Class B Group 1
Effect of radiation immunity:
 Intheradio-frequencyelectromagneticeldof3V/m,accuracyis
withinvetimestheratedaccuracy.

69
Standard accessories: Batteries : 4
 Testingleads:1set(Model98073)
Fuse (included): 440mA/1000V (99015), 10A/1000V (99016)
 Use’smanual:1
Optionalaccessories:Carryingcase  93029
(for the main unit with testing leads
and communication cable)
 Testingleads(1set) 98073
Testing leads with alligator clip(1 set) 99014
Fuse
440mA/1000V 99015
10A/1000V 99016
Temperature probes 90050, 90051, 90055, 90056
Communication Package for DMM  92015(Software,USBadapterand
cable)
Printer Adapter and Cable 97016
Printer 97010
AC adapter (for printer, Europe) 94006
Thermal paper for printer (10 rolls) 97080

70
3.2 Accuracy
Test conditions:
Temperatureandhumidity:23±5ºCat80%RHorless
Accuracy:±(%ofreading+digits)
Note: Each response time is a value to rated accuracy within selected range.
DC Voltage Measurement V
Range Resolution Accuracy Input Resistance Maximum
Input Voltage
TY710, TY720
50mV 0.001mV 0.05+10
Approx.100MΩ 1000V DC500mV 0.01mV 0.02+2
2400mV 0.1mV
5V 0.0001V 0.025+5
10MΩ 1000V rms AC
50V 0.001V
0.03+2500V 0.01V
1000V 0.1V
NMRR: 80dBormore50/60Hz±0.1%
 (70dBormore50/60Hz±0.1%when50mVRange)
CMRR: 100dBormore50/60Hz(Rs=1kΩ)
Responsetime:0.3secmax.
AC Voltage Measurement [RMS] V
TY710
ACCoupling,Rms-valuedetection,Crestfactor*:<3
Range Resolution Accuracy Input Impe-
dance
Maximum
Input
Voltage
10 to 20Hz 20Hz to
1kHz 1k to 10kHz 10k to 20kHz
500mV 0.01mV
1.5+30*1 0.7+30*1 2+50*2
11MΩ
<50pF 1000V
rms AC
1000V DC
5V 0.0001V
50V 0.001V 10MΩ
<50pF
500V 0.01V
1000V* 0.1V *2 *2 3+30*2 -
*: Crestfactor<1.5at1000Vrange
Accuracy*1:At5to100%ofrange,*2:At10to100%ofrange
CMRR:80dBormoreDCto60Hz(Rs=1kΩ)
Response time: 1 sec max.

71
AC Voltage Measurement [RMS] V
TY720
ACCoupling,Rms-valuedetection,Crestfactor*:<3
Range Reso-
lution
Accuracy
Input
Impedance
Maximum
Input
Voltage
10 to
20Hz 20Hz to 1kHz 1k to 10kHz 10k to 20kHz 20k to 50kHz 50k to 100kHz
50mV
0.001mV
2+80
*2
0.4+40
*2
5+40
*2
5.5+40
*2
15+40
*2 11MΩ
<50pF 1000V
rmsAC
1000V
DC
500mV 0.01mV
1+30
*1
0.4+30
*1
1+40
*1
2+70
*2
5+200
*2
5V 0.0001V
50V 0.001V
10MΩ
<50pF
500V 0.01V
1000V* 0.1V *2 *2 3+30
*2 -
*: Crestfactor<1.5at1000Vrange
Accuracy*1:At5to100%ofrange,*2:At10to100%ofrange
CMRR:80dBormoreDCto60Hz(Rs=1kΩ)
Response time: 1 sec max.
AC Voltage Measurement [MEAN] V
TY720 AC Coupling, MEAN value detection, RMS value calibration (sine wave)
Range Reso-
lution
Accuracy Input
Impedance
Maximum
Input
Voltage
10 to 20 Hz 20 to 500 Hz 500Hz to 1 kHz
50mV
0.001mV
4+80
*2
1.5+30
*2
5+30
*2 11MΩ
<50pF
1000V
rmsAC
1000V
DC
500mV 0.01mV
2+30
*1
1+30
*1
3+30
*1
5V 0.0001V
50V 0.001V 10MΩ
<50pF
500V 0.01V
1000V 0.1V *2 *2 *2
Accuracy*1:At5to100%ofrange,*2:At10to100%ofrange
CMRR:80dBormoreDCto60Hz(Rs=1kΩ)
Response time: 1 sec max.

72
DCV+ACV +
TY710 MaximumReading50000,Crestfactor*:<3
Range Resolution Accuracy Input Impe-
dance
Maximum
Input
Voltage
DC, 10 to
20Hz DC, 20Hz to 1kHz DC, 1k to 10kHz DC, 10k to 20kHz
5V 0.0001V 1.5+10
*1
1+10
*1
2+10
*2
11MΩ
<50pF 1000V
rms AC
1000V DC
50V 0.001V 10MΩ
<50pF
500V 0.01V
1000V* 0.1V *2 *2 -
DCV+ACV +
TY720 MaximumReading50000,Crestfactor*:<3
Range Reso-
lution
Accuracy Input
Impe-
dance
Maxi-
mum
Input
Voltage
DC, 10
to 20Hz
DC,
20Hz to
1kHz
DC,
1k to
10kHz
DC,
10k to
20kHz
DC,
20k to
50kHz
DC,
50k to
100kHz
5V 0.0001V 1.5+10
*1
0.5+10
*1
1+10
*1
2+10
*2
5+20
*2
11MΩ
<50pF 1000V
rms AC
1000V
DC
50V 0.001V 10MΩ
<50pF
500V 0.01V
1000V* 0.1V *2 *2 -
*: Crestfactor<1.5at1000Vrange
Accuracy*1:At5to100%ofrange,*2:At10to100%ofrange
CMRR:80dBormoreDCto60Hz(Rs=1kΩ)
Response time: Approx. 2 sec
DC Current Measurement A
Range Resolution Accuracy Voltage Drop Maximum Input
Current
TY710, TY720
500μA 0.01μA
0.2+5
<0.11mV/μA 440mA Protected by a
440mA/1000V fuse.
5000μA 0.1μA
50mA 0.001mA <4mV/mA
500mA*3 0.01mA
5A 0.0001A 0.6+10 <0.1V/A 10AProtected by a
10A/1000V fuse.
10A 0.001A 0.6+5
*3:Maximummeasurementcurrent:440mAat500mArange
Responsetime:0.3secmax.
Note :After measuring over 500mA DC (especially 10A DC), “Zero error” occurs for a while. In that
case, please wait for a while at zero input until the value stabilizes before measuring again.

73
AC Current Measurement [RMS] A
TY710
Rms-valuedetection,Crestfactor:<3
Range Resolution Accuracy Voltage Drop Maximum Input
Current
10 to 20Hz 20Hz to 1kHz
500μA 0.01μA
1.5+20 1+20
<0.11mV/μA 440mA Protected
by a 440mA/
1000V fuse.
5000μA 0.1μA
50mA 0.001mA <4mV/mA
500mA*3 0.01mA
5A 0.0001A <0.1V/A 10A Protected by a
10A/1000V fuse.
10A 0.001A
AC Current Measurement [RMS] A
TY720 Rms-value detection, Crestfactor:<3
Range Resolution Accuracy Voltage
Drop Maximum Input Current
10 to 20Hz
20Hz to 1kHz 1k to 5kHz
500μA 0.01μA
1+20 0.75+20 1+30
<0.11
mV/μA 440mA Protected
by a 440mA/
1000V fuse.
5000μA 0.1μA
50mA 0.001mA <4mV/mA
500mA*3 0.01mA
5A 0.0001A 1.5+20 1+20 2+30 <0.1V/A
10A Protected by
a 10A/1000V fuse.
10A 0.001A
Model TY710/720
Accuracy At 5 to 100% of range,At 10 to 100% of range for 10A Range
*3:Maximummeasurementcurrent:440mAat500mArange
Response time: 1 sec max.

74
AC Current Measurement [MEAN] A
TY720 MEAN value detection, RMS value calibration (sine wave)
Range Resolution Accuracy Voltage
Drop Maximum Input Current
10 to 20Hz 20 to 500Hz 500Hz to
1kHz
500μA 0.01μA
2+20 1.5+20 2+30
<0.11
mV/μA 440mA Protected
by a 440mA/
1000V fuse.
5000μA 0.1μA
50mA 0.001mA <4mV/mA
500mA*3 0.01mA
5A 0.0001A
3+20 2+20 4+30 <0.1V/A
10A Protected
by a 10A/
1000V fuse.
10A 0.001A
Accuracy At 5 to 100% of range,At 10 to 100% of range for 10A Range
*3:Maximummeasurementcurrent:440mAat500mArange
Response time: 1 sec max.
DCA+ACA +
TY710
MaximumReading50000,Crestfactor:<3
Range Resolution Accuracy Voltage Drop Maximum Input
Current
DC, 10 to
20Hz DC, 20Hz to 1kHz
500μA 0.01μA
2+10 1.5+10
<0.11mV/μA 440mA Protected by a
440mA/1000V fuse.
5000μA 0.1μA
50mA 0.001mA <4mV/mA
500mA*3 0.01mA
5A 0.0001A <0.1V/A 10A Protected by a
10A/1000V fuse.
10A 0.001A
Accuracy At 5 to 100% of range,At 10 to 100% of range for 10A Range
*3:Maximummeasurementcurrent:440mAat500mArange
Response time: 2 sec max.

75
DCA+ACA +
TY720
MaximumReading50000,Crestfactor:<3
Range Resolution Accuracy Voltage Drop Maximum Input
Current
DC, 10 to
20Hz DC, 20Hz to 1kHz DC, 1k to 5kHz
500μA 0.01μA
1.5+10 1+10 1.5+10
<0.11mV/μA 440mA Protected
by a 440mA/
1000V fuse.
5000μA 0.1μA
50mA 0.001mA <4mV/mA
500mA*3 0.01mA
5A 0.0001A 2+10 1.5+10 3+10 <0.1V/A 10A Protected by a
10A/1000V fuse.
10A 0.001A
Accuracy At 5 to 100% of range,At 10 to 100% of range for 10A Range
*3:Maximummeasurementcurrent:440mAat500mArange
Response time: Approx. 2 sec
ResistanceMeasurementΩ
Range Resolution Accuracy Maximum Measuring
Current
Open-loop
Voltage Input Protective Voltage
TY710 TY720
500Ω 0.01Ω
0.1+2
*1
0.05+2
*1
<1mA
<2.5V 1000V rms
5kΩ 0.0001kΩ <0.25mA
50kΩ 0.001kΩ <25μA
500kΩ 0.01kΩ <2.5μA
5MΩ 0.0001MΩ 0.5+2 <1.5μA
50MΩ 0.001MΩ 1+2 <0.13μA
*1:Accuracyisspeciedafterzeroadjustment(resistance).
Responsetime:1secmax.at500Ωto500kΩ
5secmax.at5MΩto50MΩ
LowPower-ΩLP-Ω
Maximum Reading 5000
Range Resolution Accuracy Maximum Measuring
Current
Open-loop
Voltage Input Protective Voltage
TY720 only
5kΩ 0.001kΩ
0.2+3
<10μA
<0.7V 1000V rms
50kΩ 0.01kΩ <1.0μA
500kΩ 0.1kΩ <0.6μA
5MΩ 0.001MΩ 1+3 <0.05μA
LowPower-Ω: Measures resistance under lowmeasurement current.