Hioki CM4001 AC Leakage Clamp Meter
- Description
Description
Overview
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The Hioki CM4001 is a compact AC leakage clamp meter built for detecting very small leakage currents all the way up to high load currents.
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It has a slim jaw (24 mm diameter) that makes it easy to clamp around wires in tight / crowded cable installations.
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It supports wireless data transfer using Hioki’s optional Wireless Adapter Z3210, which pairs with the GENNECT Cross app for logging or exporting results.
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It includes a comparator function (set a threshold → meter gives red backlight + audible alert) to quickly identify abnormal leakage currents.
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Designed for maintenance, troubleshooting, and preventive inspections, especially for GFCIs / RCDs and earth leakage paths.
Key Features & Specifications
| Feature | Detail |
|---|---|
| AC Current Range | 60.00 mA / 600.0 mA / 6.000 A / 60.00 A / 600.0 A (5 ranges) |
| Measurement Method | True RMS |
| Frequency Range | 40.0 Hz to 999.9 Hz |
| Filter Function | Cutoff at ~180 Hz (–3 dB) to remove high‑frequency noise. |
| Comparator | Yes — set a threshold, meter gives light + sound alert if exceeded. |
| Memory / Logging Functions | Max / Min / Avg RMS, PEAK capture (for transient/leak spikes), inrush measurement (captures up to ~150 ms startup current) |
| Display Refresh Rate | 5 times per second |
| Jaw Diameter | φ 24 mm |
| Crest Factor | 4.5 (≤ 4000 counts); 3 (>4000 to ≤6000) |
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