Description
Hioki CM4375-90 Clamp Meter for Precise Measurement in Tight Spaces
The Hioki CM4375-90 Clamp Meter is a professional-grade True RMS 1000A AC/DC measuring tool designed to deliver exceptional accuracy and accessibility. Its innovative slim jaw structure allows users to clamp between tightly packed cables in distribution boxes and control panels with confidence, eliminating the risk of wire damage or inaccurate readings.
Equipped with a Wireless Adapter Z3210, this clamp meter connects seamlessly via Bluetooth® to your smartphone or tablet. Using the GENNECT Cross app, users can log, analyze, and transfer readings directly to Excel® templates, simplifying reporting and data management on the go.
The Hioki CM4375-90 supports up to 2000V DC measurement with the optional P2010 High Voltage Probe, making it perfect for solar PV inspections and electric vehicle maintenance. With CAT IV 600V and CAT III 1000V ratings, it ensures maximum operator safety while handling high-voltage systems.
Built to perform in demanding environments, the IP54-rated enclosure and damage-resistant jaws (guaranteed for 30,000 open-close cycles) ensure long-term reliability. The auto AC/DC detection function improves workflow efficiency, while the inrush current feature accurately measures transient currents during motor startup or welding operations.
When paired with GENNECT Cross, the meter also enables harmonic analysis up to the 30th order, helping diagnose power issues like equipment overheating, energy loss, or reduced efficiency. With features like auto hold, low-pass filter, and backlight display, the Hioki CM4375-90 offers unmatched precision, convenience, and durability for field engineers and technicians.
Technical Specifications
| Specification | Details |
| Model | Hioki CM4375-90 |
| Current Range (AC/DC) | Up to 1000A (True RMS) |
| Voltage Range | 600 mV – 1000 V (up to 2000 V with P2010 probe) |
| Safety Rating | CAT IV 600V / CAT III 1000V |
| Wireless Function | Bluetooth® via Z3210 adapter |
| Harmonic Analysis | Up to 30th order with GENNECT Cross |
| Resistance Range | 600 Ω – 6.000 MΩ |
| Capacitance Range | 1.000 μF – 1000 μF |
| Temperature Range | -40°C to 400°C |
| Inrush Measurement | RMS and crest value capture |
| Protection Rating | IP54 (storage), IP20 (operation) |
| Jaw Diameter | 34 mm (1.34 in) |
| Power Supply | 2 × LR03 Alkaline Batteries |
| Continuous Operation | Approx. 40 hr (non-wireless) / 20 hr (wireless) |
| Dimensions | 65 × 242 × 35 mm |
| Weight | 350 g (12.3 oz) |
| Included Accessories | Test Lead L9300, Carrying Case C0203, Batteries, Manuals |
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