CPM Flat Plate Analyzer (Charged Plate Monitor) is a precision instrument designed for evaluating the performance of ionizing equipment and measuring the electrostatic decay properties of various materials and objects. It serves as an essential tool for quality control and safety assurance in industries sensitive to electrostatic discharge, such as electronics manufacturing, cleanrooms, and medical device production. The instrument then meticulously measures the time it takes for this charge to dissipate when exposed to an ionizer, a critical metric known as decay time or dissipation time, with modern timers offering high-resolution measurements down to 10 ms. A significant advancement in modern CPM design is the separation of the sensing plate from the control unit by up to 3 meters. This feature minimizes the influence of the operator's own electrostatic field on the measurement, thereby enhancing accuracy and allowing for more flexible testing at various points within an electrostatic protected area. For data acquisition and analysis, they are equipped with outputs, including USB interfaces, to connect with computers for data logging and further processing. Compliant with major international standards like ANSI/ESD S3.1 and IEC 61340-5-1, the CPM Flat Plate Analyzer is indispensable for tasks such as verifying ionizer balance, testing the performance of anti-static materials, and assessing human body voltage generation, ultimately helping to prevent ESD damage and improve production line reliability.