AC/DC CLAMP METER CM4371

True RMS 600 A AC/DC Clamp Meter
for the Toughest Situations


Hioki clamp meters are best-in-class measuring devices incorporating
Hioki’s expertise in current sensing technology. Model CM4371 is a 600A
True RMS clamp meter that features stronger jaws, broader -25℃ to 65℃
operating temperature range and IP54 dustproof and waterproof enclosure
to enable professionals to work quickly in tough situations including the
development, repair, and maintenance of equipment and devices such as electric
vehicles. Additionally, the high-voltage DC measurement capability of up to
1700 V is ideal for the clamp maintenance inspections of electrical and solar
power equipment.

Model No. (Order Code)

CM4371 

GOOD DESIGNTrueRMSCE

 

CAT IV 600 V, CAT III 1000 V

 

 


Germany iF Design Award CM4371 series
Key Features

• Multiple measurement functions
• Automatic AC/DC function helps boost work efficiency
• Measure DC voltages of up to 1700 V
• Simultaneously measure inrush current in RMS and crest values
• Expanded -25 °C to 65 °C operating temperature range
• IP54 dustproof and waterproof enclosure *Jaws (current sensor portion): IP50

How to Use the Hioki CM4370 Series Clamp Meters
Current Measurement Function:

Learn how to effectively use the current measurement function with this short video.

 

How to Use the Hioki CM4370 Series Clamp Meters
Auto Hold Function:

The Auto Hold feature is perfect in situations where the display is hard to read because the clamped wires are in hard to reach locations. With Auto Hold, measured results automatically freeze on the display until the next measurement starts, making testing and record taking a snap.

How to Use the Hioki CM4370 Series Clamp Meters
Max/Min/AVG/Peak Function:

Watch this video to learn how to capture the maximum, minimum, average and peak values of a current signal, available when the AUTO AC/DC mode is not in use.

 

How to Use the Hioki CM4370 Series Clamp Meters
Simultaneous Display of DC Current and DC Voltage:

The CM4370 Series can measure both DC current and DC voltage with a single device at the same time, making it ideal for automotive battery testing and inspection and maintenance of solar panels.

How to Use the Hioki CM4370 Series Clamp Meters
Inrush Measurement Function:

Accurately measure the startup or inrush current of motors and equipment. The CM4370 series is engineered to detect the full startup current period and then identify the RMS waveform as well as the highest waveform peak.

How to Use the Hioki CM4370 Series Clamp Meters
Voltage Measurement Function:

The DMM function of the AC/DC clamp meter is advanced enough to measure up to 1700V AC/DC. Watch this video to learn more.

How to Use the Hioki CM4370 Series Clamp Meters
Continuity Check Function:

The DMM function of the AC/DC clamp meter also provides a continuity check function. Easily detect short-circuits with the clear buzzer and red LED.

How to Use the Hioki CM4370 Series Clamp Meters
AC Voltage Detection Function:

The tip of the current sensor of the CM4370 Series can also detect live voltages, eliminating the need for you to use a separate voltage detector. Energized lines are identified with a loud buzzer and red LED on the clamp meter.

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

DC Current range20.00 A/600.0 A, Basic accuracy: ±1.3% rdg. ±0.08 A (20 A range)
AC Current range20.00 A/600.0 A (10 Hz to 1 kHz, True RMS), Basic accuracy: ±1.3% rdg. ±0.08 A (at 20 A)
Crest factor20.00 A range: 7.5
600.0 A range: 3 or less
DC+AC Current range20.00 A/600.0 A (10 Hz to 1 kHz, True RMS), Basic accuracy:±1.3% rdg. ±0.13 A (at 20 A)
DC Voltage range600.0 mV to 1500 V, 5 ranges, Basic accuracy: ±0.5% rdg. ±3 dgt.
AC Voltage range6.000 V to 1000 V, 4 ranges (15 Hz to 1 kHz, True RMS), Basic accuracy: ±0.9% rdg. ±3 dgt.
DC+AC Voltage range6.000 V to 1000 V, 4 ranges, Basic accuracy: ±1.0% rdg. ±7 dgt.
Resistance range600.0 Ω to 600.0 kΩ, 4 ranges, Basic accuracy: ±0.7% rdg. ±5 dgt.
Capacitance range1.000 μF to 1000 μF, 4 ranges, Basic accuracy: ±1.9% rdg. ±5 dgt.
Frequency range9.999 Hz to 999.9 Hz, Basic accuracy: ±0.1% rdg. ±1 dgt.
Temperature (K)-40.0 to 400.0 ˚C, add temperature probe accuracy to basic accuracy of ±0.5% rdg. ±3.0 ˚C
Voltage detectionHi: 40 V to 600 V AC, Lo: 80 V to 600 V AC, 50/60 Hz
Other functionsAutomatic AC/DC detection, Plus/Minus judgement function of DC A, DC V, Max/Min/Average/PEAK MAX/ PEAK MIN value display, Filter function, Display value hold, Auto hold, Back light, Auto-power save, Buzzer sounds, Zero-adjustment
Dustproof, waterproofGrip: IP54 (when measuring an insulated conductor only), Jaw (the current sensor portion of the instrument)/ barrier: IP50 *Risk of electric shock from the conductor being measured increases when wet.
Power supplyLR03 Alkaline battery ×2, Continuous use 45 hr (Backlight OFF)
Core jaw diameter69 mm (2.72 in) W× 14 mm (0.55 in) D, φ33 mm (1.30 in)
Dimensions and mass65 mm (2.56 in) W × 215 mm (8.46 in) H × 35 mm (1.38 in) D mm, 340 g (12.0 oz)
AccessoriesTEST LEAD L9207-10, CARRYING CASE C0203, LR03 Alkaline battery ×2, Instruction Manual×1
Catalog: CLAMP ON HiTESTER SeriesDownload PDF  [3MB]English
Catalog: AC/DC CLAMP METER AC CLAMP METER CM4000 seriesDownload PDF  [6MB]English

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