公开(公告)号：US3213280A

公开(公告)日：1965-10-19

申请号：US5173860

申请日：1960-08-24

Applicant: GEN MOTORS CORP

Inventor： BURLEY HARVEY A ,  DIAMOND MILTON J ,  DANFORTH JOHN P ,  BLOCK ARTHUR D

IPC: G01N23/204 ,  G01N33/38

CPC classification number: G01N23/204 ,  G01N33/38

公开(公告)号：US3600574A

公开(公告)日：1971-08-17

申请号：US3600574D

申请日：1969-05-12

Applicant: GEN MOTORS CORP

Inventor： GLAZA DONALD D ,  BLOCK ARTHUR D

IPC: G01N23/12 ,  G01T1/16 ,  G01N23/14

CPC classification number: G01N23/12

Abstract: To measure the amount of water present in foundry sand continuously flowing through a chute, a probe within the chute carries a fast neutron source and a slow neutron detector to detect the amount of water in the sand. A gamma source in the probe and a gamma detector outside the chute measure the sand density. The detector output signals are arithmetically combined to give a signal proportional to percent moisture by weight. The signal may be used to control water addition to the sand.