Description
Hioki CT7731 Current Sensor for Reliable AC/DC Monitoring
The Hioki CT7731 AC/DC Auto-Zero Current Sensor is engineered for professionals who require precise, stable current measurements in both AC and DC applications up to 100 A. Its innovative auto-zero technology minimizes zero-point drift, even during long-term monitoring and temperature changes, making it ideal for site inspections, industrial testing, and laboratory research.
Detachable Display Unit for Flexible Operation
When paired with the CM7290 or CM7291 detachable Display Unit, the CT7731 offers versatile monitoring options and real-time display of current measurements. Users can select from four output modes—WAVE, RMS, PEAK, and FREQ—allowing seamless integration with Memory HiCorders, data loggers, and oscilloscopes. The CM7291 model supports Bluetooth® wireless data transfer to smartphones and tablets via the GENNECT Cross app for instant analysis and waveform review.
Extended Temperature Range and Long-Term Accuracy
The CT7731 operates in temperatures ranging from -25°C to 65°C (-13°F to 149°F), ensuring reliable measurements in both cold and hot environments. Its switching-based offset cancellation circuit eliminates the need for frequent zero-adjustment, maintaining accurate DC current readings over extended periods. This feature is particularly useful for continuous monitoring or logging applications.
Applications
Ideal for industrial AC/DC current monitoring, field inspections, lab testing, and integration with memory recorders or loggers. The CT7731 combines accuracy, flexibility, and durability to deliver reliable results in varied conditions.
Technical Specifications Table
| Specification | Details |
| Product Name | Hioki CT7731 AC/DC Auto-Zero Current Sensor |
| Measurement Range | AC/DC up to 100 A |
| Core Diameter | φ33 mm (1.30 in) |
| Output Formats | WAVE, RMS, PEAK, FREQ (via CM7290/CM7291) |
| Operating Temperature | -25°C to 65°C (-13°F to 149°F) |
| Auto-Zero Function | Yes, minimizes zero-point drift |
| Display Unit | Detachable CM7290/CM7291 |
| Bluetooth Connectivity | Supported with CM7291 via GENNECT Cross app |
| Safety Rating | CAT IV 600 V |
| Applications | Field inspections, lab testing, industrial monitoring |
| Notes | Requires CM7290/CM7291 to operate; cannot be used standalone |
| Model Number | CT7731 |
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