公开(公告)号：EP1216403A1

公开(公告)日：2002-06-26

申请号：EP00966927.6

申请日：2000-09-26

Applicant: ROSEMOUNT INC.

Inventor： BEHM, Steven, M. ,  KRUEGER, William, B. ,  ORTH, Kelly, M. ,  BREKKEN, Jeffrey, C.

IPC: G01L9/00

CPC classification number: G01L19/143 ,  G01D1/00 ,  G01L9/0072 ,  G01L9/045 ,  G01L9/125 ,  G01L13/026 ,  G01L19/0681 ,  H01R29/00

Abstract: A pressure transmitter (20, 21, 60, 150, 190, 200, 201) with a transmitter housing (22, 62, 152) having an outer wall (64, 154) providing thermal resistance (66). The outer wall (64, 154) extends from an isothermal island (68, 156) at a first end (70) to a heat sink island (72, 159) at a second end (74). The isothermal island (68, 156) includes a fluid inlet (38, 76, 158, 202), and pressure and temperature sensors (34, 78, 164; 42, 80, 166). The heat sink island (72, 159) includes a primary heat load device (40, 41, 110, 174) that is heat sunk to an outer shell (104, 170) of an electrical connector. The connector (102, 168) contacts (24, 26, 108, 172) carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device (40, 41, 110, 174). A circuit board (120, 176) controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.

公开(公告)号：EP1216403B1

公开(公告)日：2007-01-03

申请号：EP00966927.6

申请日：2000-09-26

Applicant: ROSEMOUNT INC.

Inventor： BEHM, Steven, M. ,  KRUEGER, William, B. ,  ORTH, Kelly, M. ,  BREKKEN, Jeffrey, C.

IPC: G01L9/00

CPC classification number: G01L19/143 ,  G01D1/00 ,  G01L9/0072 ,  G01L9/045 ,  G01L9/125 ,  G01L13/026 ,  G01L19/0681 ,  H01R29/00

Abstract: A pressure transmitter (20, 21, 60, 150, 190, 200, 201) with a transmitter housing (22, 62, 152) having an outer wall (64, 154) providing thermal resistance (66). The outer wall (64, 154) extends from an isothermal island (68, 156) at a first end (70) to a heat sink island (72, 159) at a second end (74). The isothermal island (68, 156) includes a fluid inlet (38, 76, 158, 202), and pressure and temperature sensors (34, 78, 164; 42, 80, 166). The heat sink island (72, 159) includes a primary heat load device (40, 41, 110, 174) that is heat sunk to an outer shell (104, 170) of an electrical connector. The connector (102, 168) contacts (24, 26, 108, 172) carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device (40, 41, 110, 174). A circuit board (120, 176) controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.