Ụdị PN counter nke DC bụ ihe ngwọta pụrụ iche maka ule mmepụta ọkachamara. Emebere ya nke ọma maka ịnwale oke na ọnụọgụgụ n'ụlọ ọrụ nyocha na oche ule injin. Ngwaahịa ahụ bụ nke ihe mmetụta nlekota ihe nlekota ihe kachasị elu ugbu a na ahịa, na ihe niile dị na PN counter na-ejikọta ọnụ iji hụ na ọrụ nke sensọ ziri ezi n'okpuru ọnọdụ niile.
Enwere ike iji ya tụọ ọnụọgụ particulate (PN), bench ule engine na ule PEMS, yana nyochaa ihe ọkụkụ dị ala nke gburugburu ebe obibi.
1. Ọ nwere ike tụọ ma particulate nọmba na uka;
2. Nnukwu nha nha dị omimi;
3. Oge nzaghachi <5s, mkpebi oge: 1s, nha nha nha ≤ ± 20%;
4. Enweghị mkpa maka nlele dilution;
5. Nkwukọrịta: 4G / 5G IoT nkwurịta okwu, nnyefe data kpọmkwem na ihe nkesa igwe ojii na nlele ozugbo na ekwentị mkpanaaka na PC;
6. Ihe a na-ahụ anya: 10nm-2.5μm
7. nha nha: 1000 ~ 5000000 # / cm3;
8. Nleba anya na-aga n'ihu n'ezie;
9. Ihe mmetụta particulate na-anabata ngwa ngwa iji hụ na nha oge.