公开(公告)号：EP1511983B1

公开(公告)日：2009-09-23

申请号：EP03760071.5

申请日：2003-06-06

申请人： Edwards Limited

发明人： PACKER, Kenneth George ,  KEY, Matthew

IPC分类号： G01L21/12

CPC分类号： G01L21/12

摘要： A thermal conductivity type pressure gauge comprises a gauge head (2) being rotatably mountable in a vessel whose environmental pressure is to be measured and an elongate electrical filament (6) mounted in the gauge head, the gauge head (2) having an inlet wherethrough the electrical filament is exposed to the environmental pressure within the vessel and the filament (6) having directional component lengths in two orthogonal axes, one of the orthogonal axes X-X being parallel to the axis of rotation of the gauge head (2).

公开(公告)号：EP2215647B1

公开(公告)日：2012-06-20

申请号：EP08806729.3

申请日：2008-10-07

申请人： Edwards Limited

发明人： KEY, Matthew

IPC分类号： H01J41/06

CPC分类号： H01J41/06

摘要： A gauge head (10) for an ionisation vacuum gauge includes an electrical device (12, 28, 54) operable to provide an electrical discharge in a gas whose pressure is to be measured to initiate ion discharge in the gas.

摘要翻译： 一种用于电离真空计的测头（10）包括电气装置（12,28,54），其可操作以提供气体中的放电，该气体的压力将被测量以引发气体中的离子放电。

公开(公告)号：EP2215647A2

公开(公告)日：2010-08-11

申请号：EP08806729.3

申请日：2008-10-07

申请人： Edwards Limited

发明人： KEY, Matthew

IPC分类号： H01J41/06

CPC分类号： H01J41/06

摘要： A gauge head (10) for an ionisation vacuum gauge includes an electrical device (12, 28, 54) operable to provide an electrical discharge in a gas whose pressure is to be measured to initiate ion discharge in the gas.