الوصف

Mask respiratory resistance tester is a combination of two instruments, filtration efficiency testing unit and exhalation/inhalation resistance testing unit. Thefiltration efficiency testing unit mainly used to test filtration efficiency and resistance of masks and filter medium. Exhalation/inhalation resistance testing unit is mainly used to test the exhalation and inhalation resistance of various types of masks.

Product information

Filtration efficiency testing unit:

Test flow: *0~*5L/min;

Test area: **0cm2;

Efficiency range: *0%~*9.*5% and *5%~*9.**9% are optional;

Resistance range: 0~**5Pa and 0~**0Pa are optional;

Aerosol: NaCl, DEHS, Paraffin oil, etc.

Test period: can be set freely, minimum *0s;

Detector: Laser aerosol particle counter, six channels (0.3μm, 0.5μm, 1.0μm, 3.0μm, 5.0μm, *0.0μm);

Flow rate accuracy: ±3%;

Resistance accuracy: 1Pa;

Test repeatability of residual: ≤±*0%;

Power supply: AC**0V, *0 or *0 Hz;

Dimension: **0mm***0mm****0mm.