This machine consists of optical system, photoelectric sensor, signal amplifier, signal processing

Circuit and LCD display components. Optical system Infrared energy to the photoelectric sensor, 

the photoelectric sensor converts the energy into the corresponding Electrical signal, which is 

converted into reading through signal amplifier and signal processing circuit It is displayed on

the LCD. The machine also has a USB data output function, so that your measurement The 

volume is more handy!