The particle counter box is designed as a three-channel particle counter for monitoring up to 6 sizes etc on the display and 16 sizes etc via "Protrend". A small controller (PLC) can start measuring and reading three particle sizes using a 4-20mA current signal (option: Voltage 0-10V). In addition, you can check whether the limit is exceeded by the contact (closer). The display screen can display more than 6 adjustable sizes.