AC CLAMP METER CM4141
Innovative Current Sensor Design, Easily Get Into Tight Spaces
Hioki clamp on meters are best-in-class measuring devices incorporating
Hioki’s expertise in current sensing technology. The CM4141 is a 2000A
AC True RMS clamp meter that features a uniquely designed slim jaw that
lets you easily get into the narrow gaps between cables in crowded
electrical distribution boxes without fear of damaging the cables or the
clamp meter. The broad -25℃ to 65℃ operating temperature range and IP50
dustproof and waterproof enclosure to enable professionals to work quickly
in crowded electrical distribution panels. The high current measurement
capability makes it especially useful for industrial applications.

Model No. (Order Code)

CM4141
TrueRMSCE

CAT IV 600 V
CAT III 1000 V
Key Features

• Easily get into tight spaces between cables thanks to thin sensor with a minimum cross-section span of 11 mm
• Measure up to 2000 A AC
• AC A, AC and DC V, DC+AC V, resistance, frequency, temperature, and more
• Expanded -25 °C to 65 °C operating temperature range


Newly Designed Clamp Sensor Gets Between Wires Even with Large Jaw Diameter

Despite the ability to measure up to 2000A AC afforded by the large sensor with φ55mm core diameter, the clamp meter’s innovative jaw design lets you get between the narrow spaces between crowded cables with absolute ease. In addition, electrical panels are sometimes so crowded that you need to push and pull to the clamp to get it around the cable. The CM4141 features a robust construction that delivers strength while letting you weave through complex wiring to get to the right cable, vastly improving work efficiency and speed.

Compared with clamp meters of similar class, the meter weighs only 300g, at least 100g lighter than competitors, letting you use the instrument over long work days with significantly less effort and physical strain.

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

AC Current range60.00 A to 2000 A, 3 ranges (45 Hz to 1 kHz, True RMS), Basic accuracy 45-66 Hz: ±1.5% rdg. ±0.08 A
Crest factorFor the 60.00 A range: 2.5 (greater than 50.00 A and less than or equal to 60.00 A) to 2000 A range: 1.5 (2000 A or less)
DC Voltage range600.0 mV to 1500 V, 5 ranges, Basic accuracy: ±0.5% rdg. ±0.5 mV (at 600 mV)
AC Voltage range6.000 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 range6.000 V to 1000 V, 4 ranges, Basic accuracy DC, 45-66 Hz: ±1.0% rdg. ±0.013 V (at 6 V)
Resistance range600.0 Ω to 600.0 kΩ, 4 ranges, Basic accuracy: ±0.7% rdg. ±0.5 Ω (at 600 Ω)
Electrostatic capacity range1.000 μF to 1000 μF, 4 ranges, Basic accuracy: ±1.9% rdg. ±0.005 μF (at 1 μF)
Frequency rangeVoltage: 9.999 Hz to 999.9 Hz 3 ranges, Current: 99.99 Hz to 999.9 Hz 2 ranges, Basic accuracy: ±0.1% rdg. ±0.01 Hz (at 99.99 Hz)
Temperature (K)-40.0 to 400.0 ˚C, Basic accuracy: ±0.5% rdg. ±3.0 ˚C + temperature probe accuracy
Other functionsContinuity check, Diode check, Automatic AC/ DC detection (Voltage check only), Max/ Min/ AVG/ Peak waveform MAX/ Peak waveform MIN value display, Low-pass filter function, Display value hold, Backlight, Auto power save, Buzzer sound, Zero-adjustment, and other function
Dustproof, waterproofIP20 (Current measurement of voltage or hazardous live conductors under completely dry condition)
IP50 (When measuring or storing the resistance of a completely dry state or the current of an insulated conductor), However, dustproof and waterproof design equivalent to IP54 only on the handheld part and in a non-measurement state.
InterfaceN/A
Power supplyLR03 Alkaline battery ×2, Continuous use: 48 hr (Backlight OFF)
Core jaw diameterφ55 mm (2.17 in), Jaw dimension: 82 mm (3.23 in) W × 11 mm (0.43 in) D (D dimension is a range value of 44 mm (1.73 in) from the tip of the jaw)
Jaw cross-sectionMinimum dimension 11 mm (0.43 in) (Range value of 44 mm (1.73 in) from the tip of the jaw)
Dimensions and mass65 mm (2.56 in) W × 247 mm (9.72 in) H × 35 mm (1.38 in) D, 300 g (10.6 oz)
AccessoriesTEST LEAD L9207-10 ×1, CARRYING CASE C0203 ×1, LR03 Alkaline battery ×2, Instruction Manual ×1, Usage notes ×1
Catalog: AC/DC CLAMP METER AC CLAMP METER CM4000 seriesDownload PDF  [6MB]English

For more information, click here