Rain Impact Test
Test Method/ Standard
Artifical Rainfall Impact Sound Pressure Test according to BS EN ISO 140-18(NC/NR)

Test Facility
Test Chamber Volume : Receiver Room = 150 cu.m
Specimen size : 3845mm (L) x 2845mm (W)
Rain drop capacity : 15mm/h, 40mm/h, 300mm/h

Instrumentation
B&K Class 0 or 1 type Sound Level Analyzer
B&K microphone
B&K calibrator
B&K omnidirectional loudspeaker\

Test Description
After install the specimen on the ceiling opening, set the artificial rain fall onto a tile to simulate the rain drop noise. Measure the sound pressure level inside the receiver room to calculate the result.