公开(公告)号：CA2196749A1

公开(公告)日：1996-04-11

申请号：CA2196749

申请日：1995-09-11

Applicant: ROSEMOUNT INC

Inventor： MCCOY STEVEN J ,  SCHUMACHER MARK S ,  KIELB JOHN A ,  PALAN DONALD F ,  EDWARDS GRANT B ,  LONGSDORF RANDY J ,  TEMPLIN JAMES E

IPC: G01D3/08 ,  G01F23/284 ,  H02H9/00 ,  G01D11/24 ,  G08C19/00 ,  G08C19/16

Abstract: A barrier device (2) threadably mounts to a cabling aperture (24) on a field mounted transmitter (6). The field mounted transmitter (6) receives and transmits signals, and is wholly powered by a current loop circuit (14). The barrier device (2) has a conductive housing with at least a first (72) and a second (74) aperture and a pair of conductors (14) passing through the first aperture (72) of the barrier device (2), for connecting to a terminal block (4) in the transmitter (6). A pair of signal terminals (16, 18) are mounted in the second aperture (74) of the barrier device (6). The signal terminals (16, 18) are connectable to a handheld communicator, which is used to calibrate, monitor and test the transmitter (6). A barrier circuit (22) is mounted in the housing and is electrically connected between the signal terminals (16, 18) and the conductors (14).

公开(公告)号：WO9610730A3

公开(公告)日：1996-05-30

申请号：PCT/US9511532

申请日：1995-09-11

Applicant: ROSEMOUNT INC

Inventor： MCCOY STEVEN J ,  SCHUMACHER MARK S ,  KIELB JOHN A ,  PALAN DONALD F ,  EDWARDS GRANT B ,  LONGSDORF RANDY J ,  TEMPLIN JAMES E

IPC: G01D3/08 ,  G01F23/284 ,  H02H9/00

CPC classification number: H02H9/008 ,  G01D3/08 ,  G01F23/284

Abstract: A barrier device (2) threadably mounts to a cabling aperture (24) on a field mounted transmitter (6). The field mounted transmitter (6) receives and transmits signals, and is wholly powered by a current loop circuit (14). The barrier device (2) has a conductive housing with at least a first (72) and a second (74) aperture and a pair of conductors (14) passing through the first aperture (72) of the barrier device (2), for connecting to a terminal block (4) in the transmitter (6). A pair of signal terminals (16, 18) are mounted in the second aperture (74) of the barrier device (6). The signal terminals (16, 18) are connectable to a handheld communicator, which is used to calibrate, monitor and test the transmitter (6). A barrier circuit (22) is mounted in the housing and is electrically connected between the signal terminals (16, 18) and the conductors (14).