The Fluke 438-II Power Quality and Energy Analyzer is the industry’s most advanced handheld analyzer for troubleshooting, commissioning, and maintaining electrical systems. It combines advanced power quality analysis capabilities with energy logging and harmonics analysis to provide a complete picture of power quality and energy usage. The 438-II is the only handheld analyzer that can measure all three phases of voltage and current, as well as neutral current, making it ideal for troubleshooting complex electrical systems. It also features a built-in harmonics analyzer that can measure up to the 50th harmonic, providing detailed information about the harmonic content of the electrical system.