TY520 Digital Multimeters

3.5-digit, 6,000-count display RMS meter with a 31-segment bar graph with user calibration feature
Yokogawa TY520 True RMS, Digital Multimeters


  • High Precision
  • Basic accuracy 0.09%
  • True RMS measurement
    • Ensured Field Site Safety
  • Safety shutters preventing erroneous insertion of leads
  • New Functions for Yokogawa Middle Class DMMs
  • Current direct reading function
    clamp sensor (optional)
  • Low-pass Filter (LPF)
  • Logging-mode memory for 1600 data
  • USB communication (Optional communication package)
  • Closed Case Calibration
Measurement Functions
  • DC Voltage • AC voltage • DC current • AC current • Resistance • Frequency • Temperature • Capacitance • Continuity check • Diode test For AC voltage/current • Low-pass filter can be switched on/off • Data hold/auto hold/range hold • Relative and percentage value calculation • Auto power off


Yokogawa’s TY520 Digital Multimeter is a 3.5-digit (6000-count dual display, 31-segment bar graph display), RMS type meter. The TY520 measurement Functions are: Voltage, Current, Resistance, Continuity Check, Diode Test, Frequency, Capacitance, and Temperature. Basic features of the TY520 include: Category IV 600V, Category III 1000V, USB Communication function, Closed Case Calibration (User calibration function).

  • Literature
  • Measurement Functions
  • Specifications
Literature and Technical Information
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Switchboard Panel Meters

++ Specification Brochure | 1.2 MB
++ User’sManual | 1.3 MB

Full Support for Data Management

Real-time measurement

The optional communication package*1 sold separately (Model 92015) allows you to connect to a PC for transmitting large amounts of data that cannot be saved in the DMM internal memory.
You can transmit the saved data from the internal memory to a PC and process it using application software or spreadsheet software (Excel*2) for data management.

Measurement Functions

Direct reading of various sensor output signals

The DMM can directly read the various sensor output signals (mV DC/AC) at any scaling. The units can be changed (16 units are available). Output signal and scaled value are simultaneously displayed.

Closed Case Calibration

User calibration function

The TY series, simply performing special operations via front panel allows for quick and reliable adjustment. In addition, the series allows for one-touch adjustment of AC voltage- and AC current-to-frequency characteristics. The user calibration function leads to improved operation efficiency and cost reduction.

Safe Design

Conforms to EN61010-1 safety standard

Conforms to measurement category 1000 V AC/DC, CAT Ⅲ and 600 V AC/DC, CAT Ⅳ
Shutters prevent erroneous insertion of test leads into current measurement terminals (terminal shutters)
The current terminals have terminal shutters that prevent erroneous setting of the measurement function and lead wire connections resulting from operational errors. The terminal shutters open and close according to the function switch position.

Model: Yokogawa TY520 DMMs

4-digit LCD: 7-segment
Digital display: [6,000] counts
Bar graph display: 31-segment
Polarity indicator: “-” appears automatically when the polarity is negative
Overrange indicator: “OL”
DC Voltage Measurement
Range Res. Accuracy Resistance Max. Voltage
600mV 0.1mV 0.09% +2 cts 10MΩ 1000V DC
1000V rms AC
6V 0.001V 11MΩ
60V 0.01V 10MΩ
600V 0.1V
1000V 1V 0.15% +2 cts
AC Voltage Measurement [RMS] (~V)
Range Res. Accuracy Impedance Max. Voltage
600mV 0.1mV 0.5% + 5 cts – 60 Hz
0.5% + 5 cts – 4-500 Hz
1.5% + 5 cts – 500 – 1kHz
10MΩ, <200pF 1000V DC
1000V rms AC
6V 0.001V 11MΩ, <50pF
60V 0.01V 10MΩ<50pF
600V 0.1V
1000V 1V
DC Current Measurement (A)
Range Res. Accuracy Resistance Max. Current
600µA 0.1µA 0.2%+2 cts <0.12mV/µA 440mA
6000µA 1µA
60mA 0.01mA <3.3mV/mA
600mA 0.1mA
6A 0.0001A 0.2%+5 cts <0.1V/A 10A
10A 0.001A
AC Current Measurement (~A)
Range Res. Accuracy Resistance Max. Voltage
500µA 0.01µA 1 to 1.5%+20 cts <0.11mV/µA 440mA
5000µA 0.1µA
50mA 0.001mA <4mV/mA
500mA 0.01mA
5A 0.0001A 1% to 2%+20 cts <0.1V/A 10A
10A 0.001A
Resistance Measurement (Ω)
Range Res. Accuracy Max Test Current Protection Voltage
600Ω 0.1Ω 0.4% + 1 cts <3.5mA 1000V rms
6kΩ 0.001kΩ <0.13µA
60kΩ 0.01kΩ
600kΩ 0.1kΩ
6MΩ 0.001MΩ 0.5% + 1 cts
60MΩ 0.01MΩ 1% + 2 cts (0-40MΩ)
2% + 2 cts (40-60MΩ)
Frequency Measurement (Hz)
Range Res. Accuracy input Voltage  
10.00 – 99.99Hz 0.01Hz 0.02%+1 cts 0.2 – 600V rms
90.0 – 999.9Hz 0.1Hz
0.900 – 9.999Hz 0.001kHz 0.4 – 600V rms
9.00 – 99.99kHz 0.01kHz 0.8 – 100V rms
Range Res. Accuracy input Voltage  
10nF 0.01nF 2%+10 cts 1000V rms
100nF 0.1nF 2%+5 cts
1µF 0.001µF
10µF 0.01µF
100µF 0.1µF 3%+5 cts
1000 µF µ1F
Temperature Measurement (TEMP)
Range Res. Accuracy Input Voltage  
-50 – 600°C 0.1°C 1 to 1.5%+20 cts 1000V rms
****See specification sheet for full specifications*****
General specifications
Measuring Rate: :5 times/sec (Frequency: 1 time/sec, Capacitance: max. 0.14 times/sec (1000µF), Resistance: 2.5 times/sec, Temperature: 0.7 times/sec)
Bar graph display: 25 times/sec (DC voltage, diode test: 5 times/sec)
Power Supply: Four AA (R6) dry cells
Battery Life: Approx. 300 hours (for continuous DC voltage measurement with alkaline cells)
Withstanding Voltage: 6.88kV for 5 seconds (between input terminals and casing)
Dimensions: Approx. 90(W) x 192(H) x 49(D) mm
Weight: Approx. 570g (including batteries)
Operating Temp.: -10 to 55°C; 80% RH or less (no condensation) 40 to 55°C; 70% RH or less
Storage Temp: -30 to 70°C; 70% RH or less (no condensation)
Temperature Coeff.: Add the accuracy 0.1/°C to the basic accuracy at a temperature within -10 to 18°C and 28 to 55°C.
Compliance Standards: Safety EN61010-1, EN61010-2-030, EN61010-031, 1000V CAT#, 600V CAT$, pollution level 2
UL 61010-1, CAN/CSA-C22.2 No. 61010-1
UL 61010-031, CAN/CSA-C22.2 No. 61010-031