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Hioki 3257-50 Digital HiTester

HIOKI 3257-50 Digital HiTester 
  • 3256-50: Average rectified type, AC voltage detection simply by placing the instrument close the insulated cable
  • 3256-50: Overload protect up to 600V for all measurement functions (V, O functions up to 1000V)
  • 3257-50: True RMS type, Duty ratio measurement for pulse signal analysis

Product Details

HIOKI 3257-50 Digital HiTester

Terminal shutter interlock mechanism for safety

3256-50: Average rectified type, AC voltage detection simply by placing the instrument close the insulated cable. 3256-50: Overload protect up to 600V for all measurement functions (V, O functions up to 1000V). 3257-50: True RMS type, Duty ratio measurement for pulse signal analysis. 3257-50: Overload protect up to 1000V for all measurement functions.

Regarding DMM Accuracy
Due to the many ranges and functions available in a DMM, only the basic accuracy is indicated for reference. Please refer to the individual catalogs for detailed accuracy information.

DC Voltage : 420.0 mV to 1000 V, 5 ranges, Basic accuracy: ±0.5 % rdg. ±2 dgt.

AC Voltage /50 to 500 Hz 420.0 mV to 1000 V, 5 ranges, Basic accuracy: ±1.2 % rdg. ±3 dgt., (Average rectified) 420.0 mV to 1000 V, 5 ranges,

Resistance : 420.0 O to 42.00 MO, 6 ranges, Basic accuracy: ±0.7 % rdg. ±2 dgt.

DC Current : 42.00 µA to 420.0 mA, 10 A, 6 ranges, Basic accuracy: ±1.5 % rdg. ±4 dgt.

AC Current /50 to 500 Hz : 42.00 µA to 420.0 mA, 10 A, 6 ranges, Basic accuracy: ±2.5 % rdg. ±5 dgt., (Average rectified)

Hz (Frequency) : 199.99 Hz to 500.0 kHz, 5 ranges, Basic accuracy: ±0.02 % rdg. ±1 dgt., Input level: 0.8 V to 1000 V, 4 levels, Frequencies of less than 0.50 Hz cannot be measured

Duty ratio measure : Not available

Voltage Detection : Bring the top close to the power line, when the voltage is outside of the detection range, buzzer and the display blinks

Continuity buzzer : Threshold 50 O ± 40 O, Open terminal voltage: 3.4 V or less

Diode check : Open terminal voltage: 3.4 V or less, Testing current: 700 µA

Other function : Relative value, Memory, Auto power save, Auto hold, Recoding (Max./ Min. / Ave.)

Display : Digital/ LCD, max. 4200 digits (19999 digits at frequency measure)

Sample rate : 2.5 times/s (except Frequency), 5 times/s (Frequency, over 5 Hz), 25 times/s (Update of bar graph)

Power supply : Manganese battery (R03) ×2, Continuous use: 100 hours

Dimensions and mass : 76W (2.99in) × 167H (6.57in) × 33D (1.30in) mm, 260 g (9.2 oz)

Supplied accessories : TEST LEAD×1, Instruction Manual×1, Manganese batteries(R03)×2 (for trial purposes only), CARRYING CASE 9378×1

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