AC CLAMP METER CM4142
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 CM4142 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. Use the
built-in Bluetooth wireless technology to wirelessly send measurement data
to mobile devices and create reports.

Model No. (Order Code)

CM4142Built in Bluetooth(R) wireless technology
BluetoothCEDROPPROOF


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
• Send measured values to a smartphone or tablet using Bluetooth® wireless technology (CM4142 only)

Data can be downloaded to tablets and smartphones using Hioki’s dedicated apps available from the Google Play or App Store.

Search for “HIOKI” and download the “GENNECT Cross” app.

For the latest information about countries and regions where wireless operation is currently supported, please visit the Hioki website.

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*Company names and Product names appearing in this catalog are trademarks or registered trademarks of various companies.
*The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by HIOKI E.E. CORPORATION is under license.
*For the latest information about countries and regions where wireless operation is currently supported, please visit the Hioki website.


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.
InterfaceBluetooth® 4.0LE, Supported devices: iOS, Android™ smartphone/tablet
GENNECT Cross (free downloadable app): Display measured values and waveforms, Simple logging function, Waveform monitor function, Hold save function
Power supplyLR03 Alkaline battery ×2, Continuous use: 24 hr (Backlight OFF, Bluetooth® ON)
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, Caution on using radio waves ×1 (CM4142 only)

Countries and regions where wireless operation is currently supported (CM4142)

Wireless certificationJapan, United States, Canada, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, United Kingdom, Chile, and Mexico
Exempt from the wireless regulationsViet Nam, Hong Kong, Macao, India, Russian Federation, Colombia, Pakistan, Peru, and Georgia
Catalog: AC/DC CLAMP METER AC CLAMP METER CM4000 seriesDownload PDF  [6MB]English

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