• simultaneous measurement and display of all three-phase system parameters
• accurate phase angle measurement at low current levels
• versatile, menu-driven instrument with a built-in timer and data-logging

the pmm1 is a portable, battery or line operated, multi-function 卡塔尔世界杯中国足球赛事 instrument designed to measure ac primary and secondary currents, voltage power, reactive power, phase angle and frequency of single and three-phase systems. a high speed recording feature can capture starting currents of three-phase motors. all measured values are displayed on a large easy-to-read graphic display. rs-232 data and parallel printer ports are provided.