| 摘要 |
PURPOSE:To improve the discrimination precision of the size of particles by classifying pulses signals corresponding to sizes of particles passing through a liquid by numbers of addresses according to height and width, and counting classified signals by corresponding counters. CONSTITUTION:A sample liquid L which is diluted to a specific factor and containes suspended particles to be measured is transported to a particle detection part A by a sample transportation part 1. The detection part A irradiates the particles with light from a light emission part 3 which stops down laser light almost to the size of a particle and a photodetection and photoelectric conversion part 4 photodetects scattered light. A pulse signal as a photoelectrically converted particle signal is converted by an information processing circuit 6 into digital signals of pulse height H and pulse width W, which are stored in a memory having many addresses corresponding to combinations of two numerals HW. Then, plural counters perform counting operation on the basis of classification signals from the memory. |
