抄録
An electrostatic field detecting system comprised of an electrostatic field sensor, a signal conditioning system, and an air purge unit was newly developed to continuously monitor the electrostatic field strength of charged particles in fluidized bed granulation and drying. The output characteristics of the sensor and the operating characteristics of the system, such as sensitivity and linearity, were tested. The developed system was practically applied to the fluidized bed granulation and drying processes, and the robustness to the operating conditions were examined. The electrostatic field strength during fluidized bed granulation and drying could be continuously and accurately monitored, and the performance of the system was evaluated.
