Non-Voltage and
Current Measurement.

The Fluke 378 FC True-RMS Clamp Meter brings a new level of efficiency and safety to electrical testing with FieldSense technology—a non-contact measurement method that allows users to measure voltage and current without test leads. This innovation dramatically reduces exposure to live conductors, making it ideal for fast, safe, and accurate diagnostics in industrial and commercial settings.

What Is Non-Voltage and Current Measurement?

Traditionally, to measure voltage, electricians need to place two probes across conductors—an approach that requires physical contact with live wires. The Fluke 378 FC eliminates this need using FieldSense, which senses the electromagnetic field around a conductor to calculate:

• True-RMS voltage

• True-RMS current

• Frequency

• Power factor

• Phase rotation

All of this is done with the clamp jaw and a grounding reference—no metallic contact needed.

Common Use Cases

• Industrial and Commercial Electricians – Diagnose and verify power systems quickly and safely

• HVAC Technicians – Check compressors and motors without taking panels apart

• Facility Maintenance Teams – Perform routine inspections with minimal downtime

• Field Service Engineers – Efficient diagnostics on-site with reduced PPE requirements

Because there’s no need to touch live terminals directly, non-contact measurements reduce risk, improve speed, and help meet safety standards like CAT IV 600 V / CAT III 1000 V. FieldSense also cuts down on PPE fatigue—an important benefit for frequent testers.