AC/DC CLAMP METER CM4371
True RMS 600 A AC/DC Clamp Meter for the Toughest Situations
Discontinued
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°C to 65°C 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 (*1) is ideal for the clamp maintenance inspections of electrical and solar power equipment.
CAT IV 600 V, CAT III 1000 V
CM4371-50 Product Introduction | 600 A AC/DC Clamp Meter
Check out this 3-minute product introduction video for CM4371-50, CM4373-50
Key Features
- CAT IV 600 V, CAT III 1000 V
When using the P2000: CAT III 2000 V, CAT IV 1000 V
- Measure DC voltages of up to 2000 V (*1) for open voltage inspections of solar panels
- Simultaneously measure inrush current in RMS and crest values
- Easily transfer measurement data to your smartphone or tablet by using our free app GENNECT Cross or to an Excel® file (*2)
- Harmonic analysis from 1st to 30th order with our free app GENNECT Cross (*2)
- Automatic AC/DC function helps boost work efficiency
- *1:When using the optional DC High Voltage Probe P2000. The clamp meter itself is capable of measuring up to 1000 V DC.
- *2:Wireless Adapter Z3210 is necessary.
Germany iF Design Award CM4371 series
Current Measurement Function: How to Use the Hioki CM4370 Series Clamp Meters
Learn how to effectively use the current measurement function with this short video.
Auto Hold Function: How to Use the Hioki CM4370 Series Clamp Meters
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.
Max/Min/AVG/Peak Function: How to Use the Hioki CM4370 Series Clamp Meters
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.
Simultaneous Display of DC Current and DC Voltage: How to Use the Hioki CM4370 Series Clamp Meters
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.
Inrush Measurement Function: How to Use the Hioki CM4370 Series Clamp Meters
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.
Voltage Measurement Function: How to Use the Hioki CM4370 Series Clamp Meters
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.
Continuity Check Function: How to Use the Hioki CM4370 Series Clamp Meters
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.
AC Voltage Detection Function: How to Use the Hioki CM4370 Series Clamp Meters
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
DC Current range | 20.00 A/600.0 A, Basic accuracy: ±1.3% rdg. ±0.08 A (20 A range) | |||||
---|---|---|---|---|---|---|
AC Current range | 20.00 A/600.0 A (10 Hz to 1 kHz, True RMS), Basic accuracy: 45-66 Hz: ±1.3% rdg. ±0.08 A (at 20 A) | |||||
Crest factor | 20.00 A range: 7.5 600.0 A range: 3 or less |
|||||
DC+AC Current range | 20.00 A/600.0 A (10 Hz to 1 kHz, True RMS), Basic accuracy DC, 45-66 Hz: ±1.3% rdg. ±0.13 A (at 20 A) | |||||
DC Voltage range | 600.0 mV to 1000 V (When using P2000: 600.0 V to 2000 V) | |||||
AC Voltage range | 6.000 V to 1000 V, 4 ranges (15 Hz to 1 kHz, True RMS), Basic accuracy 45 - 66 Hz: ±0.9% rdg. ±0.003 V (at 6 V) | |||||
DC+AC Voltage range | 6.000 V to 1000 V, 4 ranges, Basic accuracy DC, 45 - 66 Hz: ±1.0% rdg. ±0.013 V (at 6 V) | |||||
Resistance range | 600.0 Ω to 6.000 MΩ, 5 ranges, Basic accuracy: ±0.7% rdg. ±0.5 Ω (at 600 Ω) | |||||
Capacitance range | 1.000 μF to 1000 μF, 4 ranges, Basic accuracy: ±1.9% rdg. ±0.005 μF (at 1 μF) | |||||
Frequency range | 9.999 Hz to 999.9 Hz, 3 ranges, Basic accuracy: ±0.1% rdg. ±0.003 Hz (at 9.999 Hz) | |||||
Temperature (K) | -40.0 to 400.0 ˚C, add temperature probe accuracy to basic accuracy of ±0.5% rdg. ±3.0 ˚C | |||||
Voltage detection | Hi: 40 V to 600 V AC, Lo: 80 V to 600 V AC, 50/60 Hz | |||||
Harmonic levels | [With Z3210 installed] Voltage/Current harmonic levels up to 30th, Content factor, Total harmonic distortion ratio *Harmonics can be displayed with our free app GENNECT Cross. |
|||||
Other functions | DC power, Continuity check, Diode check, Automatic AC/DC detection, Pass/fail judgement function of DC A and DC V, Max/Min/Average/PEAK MAX/ PEAK MIN value display, Low-pass filter function, Display value hold, Auto hold, Back light, Auto-power save, Buzzer sounds, Zero-adjustment | |||||
Dustproof, waterproof | IP54 (While in storage, or when measuring the current an insulated conductor. Do not use when wet.) | |||||
Power supply | LR03 Alkaline battery ×2 Continuous use: 40 hr (without Z3210 installed), 20 hr. (with Z3210 installed and using wireless communications) Other conditions: 10 A AC measurement, backlight off, 23°C reference value |
|||||
Core jaw diameter | φ33 mm (1.30 in), Jaw dimension: 69 mm (2.72 in) W× 14 mm (0.55 in) D | |||||
Dimensions and mass | 65 mm (2.56 in) W × 215 mm (8.46 in) H × 35 mm (1.38 in) D mm, 340 g (12.0 oz) | |||||
Included accessories | Test Lead L9300, Carrying Case C0203, LR03 Alkaline battery ×2, Instruction Manual×2, Operating Precautions ×1 |
- *1:Your instrument can be used to measure voltages in excess of 1000 V DC if and only if both of the following conditions are satisfied:
- 1. The circuit under measurement is isolated from the commercial power grid.
- 2. The circuit under measurement is isolated from ground.
- e.g.: When measuring the no-load voltage of an ungrounded PV panel
- Do not use the instrument with circuits whose terminal-to-ground voltage exceeds 1000V. Doing so may result in electric shock.
Test leads (2)
L9300 is an included accessory
Cable length: 90 cm (2.95 ft.)
Cable length 95 cm (37.4 in.), Integrated cap and protective finger guard
Options for Test leads (for the L9207-10, L9300) (2)
Attach L9207-10 with the cap removed.
Slide the guard of L9300 and attach as measurement category II.
Attaches to the tip of the Test Lead L9207-10/DT4911, L9206, 60V DC/ 30V AC
Attaches to the tip of the L4932, L9207-10/DT4911, L9206, CAT III 300 V, CAT II 600 V
Options for Test leads (for the L4930) (10)
Test Pin Set L4932 is required when using the Small Alligator Clip Set L4934
1.2 m (3.94 ft) length, CAT IV 600 V, CAT III 1000 V
Expands the length of L4930/4940, 1.5 m (4.92 ft) length
Attaches to the tip of the L4930/4940, CAT IV 600 V, CAT III 1000 V
Attaches to the tip of the L4932, L9207-10/DT4911, L9206, CAT III 300 V, CAT II 600 V
Attaches to the tip of the L4930/4940, CAT IV 600 V, CAT III 1000 V
Attaches to the tip of the L4930/4940, CAT III 600 V
Attaches to the tip of the L4930/4940, CAT III 1000 V
Attaches to the tip of the L4930/4940, CAT III 600 V
Attaches to the tip of the L4930/4940, CAT III 600 V
Attaches to the tip of the banana plug cable, Red/Black: 1 each, 185 mm (7.28 in.) length, CAT II 1000 V
Temperature measurement (1)
K type, tip exposed, 0.5 mm (0.02 inch) diameter, 80 cm (2.62 ft) length, -40°C to 260°C (-40°F to 500°F), tolerance ±2.5 °C
Carrying case (2)
C0203 is an included accessory
Bag type