Fluke’s 377 and 378 are two popular clamp meters. Both models are designed to deliver the accuracy and reliability that Fluke is known for.
In this article, we’ll compare the Fluke 377 and Fluke 378 to help you decide which multimeter is best suited for your needs.
Whether you’re involved in complex diagnostics or routine checks, understanding the differences between these two is important before you make a purchase decision on either.
Here’s a detailed comparison table that highlights the main features and specifications of the Fluke 377 and Fluke 378 clamp meters. This will help you understand the differences and similarities between these two advanced models from Fluke, allowing you to choose the one that best suits your specific needs.
Comparison Table: Fluke 377 vs Fluke 378
| Feature/Specification | Fluke 377 | Fluke 378 |
|---|---|---|
| Measurement Capabilities | AC/DC voltage, AC/DC current, resistance, continuity, frequency, capacitance | AC/DC voltage, AC/DC current, resistance, continuity, frequency, capacitance, power factor |
| Clamp Jaw Opening | 34 mm | 34 mm |
| Current Measurement | 2500 A AC/DC (via iFlex flexible current probe) | 2500 A AC/DC (via iFlex flexible current probe) |
| Voltage Measurement | 1000 V AC/DC | 1000 V AC/DC |
| True RMS | Yes | Yes |
| FieldSense Technology | Yes, for non-contact voltage measurement | Yes, for non-contact voltage measurement |
| Bluetooth Connectivity | Yes, connects to Fluke Connect app | Yes, connects to Fluke Connect app |
| Display | Large, easy-to-read display with backlight | Large, easy-to-read display with backlight, plus power quality indicators |
| Safety Rating | CAT III 1000 V, CAT IV 600 V | CAT III 1000 V, CAT IV 600 V |
| Inrush Current | Yes | Yes |
| Power Factor Measurement | No | Yes |
| Warranty | 3 years | 3 years |
| Additional Features | – | Integrated VFD low pass filter, power quality indicators (PQI) for troubleshooting power systems |
| Price | Slightly lower than Fluke 378 | Slightly higher due to additional features |
Key Differences Highlighted:
- Power Factor Measurement: The Fluke 378 includes power factor measurement capabilities, which is useful for assessing the efficiency of electrical systems and is essential for certain professional applications.
- Additional Features: The Fluke 378 offers advanced troubleshooting features like a low pass filter for variable frequency drives (VFDs) and power quality indicators. These features make it especially valuable for complex diagnostics in industrial and commercial settings.
Summary
Both the Fluke 377 and 378 are top-of-the-line clamp meters designed for professionals who need reliable, precise tools for electrical measurements. The choice between the two will largely depend on specific needs:
- The Fluke 377 is an excellent, slightly more affordable option for those who need robust, general electrical testing capabilities without the need for specialized power quality measurements.
- The Fluke 378 is better suited for professionals who require advanced features for detailed diagnostics, especially in environments involving VFDs or where power quality assessment is critical.
