The collection efficiencies of conventional dust deposition gauges are
, in general, very poor, particularly for small particles. In this pap
er a new design is proposed in which external lips are located around
a deposition gauge to control the air flow pattern and, hence, enhance
the collection efficiency. Extensive computational studies of two-dim
ensional systems reveal that much sought-after requirement of collecti
on efficiency, which is both wind- and particle-independent, may be ef
fectively achieved by incorporating outward extended lips around the g
auge opening with an integral gap.