Hioki Clamp on Probe 3273-50

Wideband DC to 50 MHz/30A AC/DC Current Probe for Oscilloscopes

Hioki flat bandwidth current probes are best-in-class current sensors for use with Memory HiCorders and high performance oscilloscopes. The 3273-50 offers a wide DC to 50 MHz bandwidth and 30A of continuous input, and is ideal for capturing transient current signals from switching power supplies, inverters, and motor controllers.

Use optional power supply 3269 or 3273 to drive the current probe when power from the Memory HiCorder or oscilloscope is not available.

Wide DC to 50 MHz (-3 dB) bandwidth
• High S/N characteristic lets you measure extremely low mA-range current waveforms
• Connects directly to an oscilloscope’s BNC input terminal
• Connects directly to a Hioki Memory HiCorder to deliver waveform monitoring
• Optional power supply available for use with oscilloscopes that do not provide probe power

Basic specifications (accuracy guaranteed for 1 year)

Frequency bandwidth DC to 50 MHz (-3 dB)
Rise time =< 7 ns
Noise level 2.5 mA rms max. (bandwidth limited to 20 MHz)
Continuous allowable input 30 A rms (requires derating at frequency)
Max. allowable peak input 50 A peak (non continuous)
Amplitude accuracy (30 min. after power-on, after degaussing and zero-adjustment) ±1.0 % rdg. ±1 mV f.s. (DC, 45 to 66 Hz, 0 to 30 A rms)
±2 % rdg. (DC, 45 to 66 Hz, 30 A rms to 50 A peak)
Output rate 0.1 V/A (use with a device having a 1 MΩ input resistance or higher)
Max. rated voltage to earth 300 V CAT I (insulated wire)
Core diameter φ 5 mm (0.20 in)
Power supply ±12 V ±0.5 V, 5.6 VA max.
Dimensions and mass 175 mm (6.89 in)W × 18 mm (0.71 in)H × 40 mm (1.57 in)D, 230 g (8.1 oz), Sensor cable BNC terminal: 1.5 m (4.92 ft), Power cable: 1 m (3.28 ft), Power plug: FFA.0S.304.CLAC37Y / LEMO inc.
Accessories Instruction manual ×1, Soft case × 1

■ Power Supply 3272 (basic specifications)

Compatible models Model 3273-50, 3274, 3275 or 3276 × 1 unit. (One sensor only)
Note: May be used with up to 2 units of Model 3273 (not -50 type), and up to 2 units of Models 3273-50, 3274, 3275 or 3276 on condition that the measurement current is sufficiently low. Please check with your HIOKI distributor.
Power supply 100 V or 120/ 220/ 240 V AC (specify when ordering), 50/60 Hz 20 VA max.
Dimensions and mass 73 mm (2.87 in) W × 110 mm (4.33 in) H × 186 mm (7.32 in) D, 1.1 kg (38.8 oz)
Accessories Instruction manual x1, Power cord x1, Spare fuse ×1

■ Power Supply 3269 (basic specifications)

Compatible models Model 3273-50, 3274, 3275 or 3276 × 4 units
Note: Also up to 4 units for the discontinued Model 3273
Power supply 100 V to 240 V AC (free) 50/60 Hz 170 VA max.
Dimensions and mass 80 mm (3.15 in) W × 119 mm (4.69 in) H × 200 mm (7.87 in) D, 1.1 kg (38.8 oz)
Accessories Instruction manual ×1, Power cord ×1

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