World's Premier Digital Multimeter. Superior Accuracy and High Response, Topped with Safety Terminal Shutters
The Hioki DT4200 Digital Multimeter Series consist of a complete lineup of 9 models ranging from professional to industrial to pocket meters. The DT4281 is our top-of-the-line high-precision 60000 count digital multimeter with all of the functions and features required for advanced testing in complex power and electrical applications.
CAT IV 600 V, CAT III 1000 V
| DT4281 | Direct and current clamp input terminals |
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The DT4281, which is part of Hioki’s DT4280 series of high-end digital multimeters, is designed for maximum safety in electrical work. Connect an AC clamp to safely measure current.
- DC current measurement 600.00μA / 6000.0μA / 60.000mA / 600.00mA
- AC current measurement 600.00μA / 6000.0μA / 60.000mA / 600.00mA
- Directly connect an AC clamp sensor
Measure the fundamental wave alone by eliminating harmonic components with the DT4281’s low-pass filter function.
Measure ripple voltage with a superposed DC signal by using peak value measurement and DC + AC voltage measurement.
The digital multimeter can convert and display instrumentation signals of 4 to 20 mA or 0 to 20 mA representing properties such as temperature, pressure, and flow rate from a transducer or other device that converts sensor data into an electrical signal.
Accurately measure the very low currents such as burner flame currents.
Mistakenly measuring voltage using the current range may lead to a short-circuit. The DT4281 eliminates the root cause of such accidents by providing clamp-on sensor based current measurement functionality instead of using conventional probes.
Digital multimeters implement two types of measurement: mean-value measurement and true RMS measurement. The two methods yield significantly different measurement results for current waveforms, which are often distorted. For accurate measurement, it is necessary to use an instrument with true RMS capability.
Connect the DT4281 to a PC with the optional Communication Package DT4900-01 to easily graph data stored in the DMM’s internal memory and display measurement results in real time on the computer. Save important measured values in text format.
*The computer and multimeter are electrically isolated by means of optical communications so that data can be sent without concern for electrical hazards.
All development, design, and manufacturing processes for almost all Hioki digital multimeters are carried out at our Head Office in Nagano Prefecture. Some of the industry’s most advanced technological capabilities enable us to deliver products of the highest possible quality.
To ensure operators’ ability to use measuring instruments safely, IEC 61010 classifies the locations in which instruments are used into a series of safety-based measurement categories (ranging from CAT II to CAT IV). Using an instrument that does not satisfy the required safety level can lead to an electrical accident.
| DC Voltage range | 60.000 mV to 1000.0 V, 6 ranges, Basic accuracy: ±0.025 % rdg. ±2 dgt. | |||||
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| AC Voltage* range | 60.000 mV to 1000.0 V, 6 ranges, Frequency characteristics: 20 Hz - 100 kHz Basic accuracy 45 - 65 Hz : ±0.2 % rdg. ±25 dgt. (True RMS, crest factor 3) |
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| DC + AC Voltage* range | 6.0000 V to 1000.0 V, 4 ranges, Frequency characteristics: 20 Hz - 100 kHz Basic accuracy 45 - 65 Hz : ±0.3 % rdg. ±30 dgt. (True RMS, crest factor 3) |
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| Resistance range | 60.000 Ω to 600.0 MΩ, 8 ranges, Basic accuracy: ±0.03 % rdg. ±2 dgt. | |||||
| DC Current range | 600.00 μA to 600.00 mA, 4 ranges Basic accuracy: ±0.05 % rdg. ±5 dgt. |
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| AC Current* range | 600.00 μA to 600.00 mA, 4 ranges Basic accuracy 45 - 65 Hz : ±0.6 % rdg. ±5 dgt. (True RMS, crest factor 3) Frequency characteristics: 20 Hz - 20 kHz (at 600 μA to 600 mA range) |
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| AC Current* range (use with Clamp on probes) |
10.00 A to 1000 A, 7 ranges Add the Clamp on probe accuracy to Basic accuracy 40 - 65 Hz : ±0.6 % rdg. ±2 dgt. (True RMS, crest factor 3) |
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| Peak | DC V measurement: Signal width 4 msec or more (single), 1 msec or more (repeated) AC V, DC/AC A measurement: Signal width 1 msec or more (single), 250 μsec or more (repeated) |
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| Capacitance range | 1.000 nF to 100.0 mF, 9 ranges, Basic accuracy: ±1.0 % rdg. ±5 dgt. | |||||
| Continuity Check | Continuity threshold: 20/50/100/500 Ω, Response time: 10 ms or more | |||||
| Diode test | Open terminal voltage: 4.5 V or less, Testing current 1.2 mA or less, Threshold of forward voltage: 0.15 V to 3 V, seven stages | |||||
| Frequency range | AC V, DC+AC V, AC A measurement, at pulse width 1 μs or more (50 % duty ratio) 99.999 Hz (0.5 Hz or more) to 500.00 kHz, 5 ranges, ±0.005 % rdg. ±3 dgt. |
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| dB conversion | Standard impedance setting (dBm), 4 Ω to 1200 Ω, 20 stages Display dB conversion value of AC voltage (dBV) |
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| Temperature (thermocouples) | K: -40.0 °C to 800.0 °C (-40.0 °F to 1472.0 °F) Add accuracy of the Thermocouple probe to main unit accuracy: ±0.5 % rdg. ±3 °C |
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| Other functions | Filter function (remove harmonic noise, use only at 600 V AC, 1000 V AC ranges), display value hold, auto hold, MAX/MIN value display, PEAK value display, relative value display, sampling setting, internal memory (400 data), auto-power save, USB communication (option), mis-insertion prevention shutters, decibel conversion, 4-20 mA percentage conversion | |||||
| Display | Main and sub displays: 5-digits LCD, max. 60000 digits | |||||
| Display refresh rates | 5 times/s (Capacitance measurement: 0.05 to 2 times/s, depending on measured value, Temperature: 1 time/s ) | |||||
| Power supply | LR6 (AA) alkaline batteries × 4, Continuous use: 100 hours | |||||
| Dimensions and mass | 93 mm (3.66 in) W × 197 mm (7.76 in) H× 53 mm (2.09 in) D, 650 g (22.9 oz) (with test leads holder and batteries) | |||||
| Included accessories | Test Lead L9207-10 × 1, Instruction Manual × 1, LR6 Alkaline Battery × 4 | |||||
