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Warranty
Warranty malfunctions occurring under conditions of normal
use in conformity with the Instruction Manual and Product
Precautionary Markings will be repaired free of charge. This
warranty is valid for a period of three (3) years from the date
of purchase. Please contact the distributor from which you
purchased the product for further information on warranty
provisions.
Introduction
Thank you for choosing the Hioki CM4001 AC Leakage
Clamp Meter. To ensure your ability to get the most out of
this instrument over the long term, please read this manual
carefully and keep it available for future reference.
Familiarize yourself with the separate document entitled
"Operating Precautions" before using the instrument.
Overview
The instrument is an AC leakage clamp meter capable of true
RMS value measurement of current ranging from 0.60 mA to
600.0 A using a compact, low-profile sensor. It also provides 
a comparator function to facilitate instantaneous pass/fail
judgments.
Intended audience
This manual has been written for use by individuals who
use the product or provide information about how to use the
product.
In explaining how to use the product, it assumes electrical
knowledge (equivalent of the knowledge possessed by a
graduate of an electrical program at a technical high school).
CM4001
AC LEAKAGE
CLAMP METER
Instruction Manual
May 2020 Edition 1
CM4001A961-00 20-05H
EN

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Summary of Contents for Hioki CM4001

  • Page 1 Introduction Thank you for choosing the Hioki CM4001 AC Leakage Clamp Meter. To ensure your ability to get the most out of this instrument over the long term, please read this manual carefully and keep it available for future reference.
  • Page 2: Usage Notes

    This, however, is not a malfunction. • The 6 A and below ranges have different sensor  characteristics than the 60 A and above ranges. As a result, use of different ranges may yield different indicated values.  Such differences do not represent a problem with the  instrument. • Use of the instrument should confirm not only to its  specifications, but also to the specifications of all  accessories, options, battery, and other equipment in use. HIOKI CM40...
  • Page 3: Specifications

    W X Y Z Instruction Manual, Operating Precautions (0990A909), Strap Option Z3210 Wireless Adapter Option is subject to change. Check Hioki’s website for the latest information. Measurement items AC Current ( A), Frequency (Hz) Maximum rated 300 V AC (Measurement Category III)
  • Page 4: Accuracy Specifications

    The value currently being measured and indicated on the measuring instrument. Accuracy guarantee Accuracy guarantee period: 1 year conditions Accuracy guarantee period after adjustment made by Hioki: 1 year Accuracy guarantee temperature and humidity range: 23°C±5°C (73°F±9°F), 80% RH or less (non-condensing) Number of jaw open/close cycles: 10000 or less...
  • Page 5: Names And Function Of Parts

    Verify that the tips of the jaws are free of damage and cracking. If there is any damage to the instrument, contact your authorized Hioki distributor or reseller for repair. DANGER •...
  • Page 6: Useful Functionality

    Repairs, Inspections, and Cleaning Replace battery If the instrument seems to be malfunctioning, confirm that the battery  is not discharged before contacting your authorized Hioki distributor WARNING or reseller. During shipment of the instrument, handle it carefully so that it is not To avoid electric shock, turn off the power switch damaged due to a vibration or shock.

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