There is disclosed a detector device for detection of gas-borne contaminant having a sample gas flow passage and a window into said passage for ionising radiation and shield means interposing a flow of shielding gas between said window and said sample gas flow against contamination of said window.
申请公布号
WO9423292(A1)
申请公布日期
1994.10.13
申请号
WO1994GB00575
申请日期
1994.03.21
申请人
ENVIRO SYSTEMS LIMITED;LIGHTFOOT, HOWARD, WILLIAM;JONES, CHRISTOPHER, D.
