Hioki Unveils PW4001: Delivering Lab Accuracy Anywhere, from Lab to Road

Hioki announces the release of the PW4001 Power Analyzer, a compact, field-ready solution engineered for the precision demands of modern mobility and energy testing. With its combination of lab-grade accuracy, portability, and rugged environmental resistance, the PW4001 sets a new benchmark for real-world power measurement in electric vehicles (EVs), hybrid systems, and next-generation mobility platforms.

Traditional benchtop analyzers remain essential in labs, but engineers now require portable, resilient instruments that deliver high accuracy in the field. The PW4001 Power Analyzer was developed to meet this need – enabling fast, reliable measurement of inverter signals, transient power behavior, and battery durability, whether in the lab or on the road.

Reliable evaluation of energy consumption and driving range is critical, even at low power inputs. The PW4001 delivers this assurance with ±0.04% basic accuracy from DC to 50/60 Hz. Engineers can confidently evaluate power conversion efficiency and switching losses in advanced SiC inverter PWM motor systems, thanks to the PW4001’s 2.5 MHz sampling rate and 600 kHz bandwidth that capture high-frequency power signals with precision. From test benches to cold chambers and on-road validation, engineers can rely on the PW4001 in any environment – its lightweight 4.6 kg design, external DC powering, and wide –20°C to +50°C operating range make it ready for versatile use (more info).

robenek@dps-az.cz