Patent ID: 9534991
Date: 2017-01-03
CPC Classifications: G01N

Claim:
1. A hand-held sampling head ( 1 ) for collecting a sample of an aerosol containing suspended particles, comprising a sampling line ( 2 ) and an integrated dilution unit ( 3 ) which is connected to the sampling line ( 2 ) and which has a dilution air inlet ( 4 ), the dilution unit ( 3 ) has a first element ( 6 ) with a first contact face ( 7 ) and a second element ( 8 ) with a second contact face ( 9 ), which are arranged to be movable relative to each other and which are in flat contact with each other via the respective contact faces ( 7 , 9 ), a sample channel ( 10 ) open toward the second element ( 8 ) is formed in the first element ( 6 ) in the first contact face ( 7 ) and is connected to the sampling line ( 2 ), a dilution air channel ( 11 ) open toward the second element ( 8 ) is formed in the first element ( 6 ) in the first contact face ( 7 ) and is connected to the dilution air inlet ( 4 ) and to a tube for a particle determination unit, and at least one receiving space ( 14 ) open toward the first element ( 6 ) is formed in the second element ( 8 ) in the second contact face ( 9 ) in such a way that the receiving space ( 14 ), during a relative movement ( 28 ) of the first element ( 6 ) with respect to the second element ( 8 ), is brought into connection successively with the sample channel ( 10 ) and with the dilution air channel ( 11 ), and the first element ( 6 ) and the second element ( 8 ) are made from ceramic, and the dilution air inlet ( 4 ) is connected to the first element ( 6 ) at one end of the dilution air channel ( 11 ) on a side of the first element ( 6 ) which faces away from the second element ( 8 ) and the tube for the particle determination unit is also connected to the dilution air channel ( 11 ) on the side of the first element ( 6 ) which faces away from the second element ( 8 ).