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公开(公告)号：EP0771418A1
公开(公告)日：1997-05-07
申请号：EP95925922.0
申请日：1995-07-19
摘要： A device and method is provided for measuring the amount of any reactive gaseous component in a single gas or in a mixture of two or more gases. The device comprises a reaction chambre, at least one means for supporting a removable catalyst suitable for catalysing the reaction between the reactive component and the gas or gases and at least one heat sensor for detecting and measuring the heat produced or absorbed by the reaction between any reactive component and one or more other gases. The supporting means is shaped to form a receptacle for holding the catalyst and the heat sensor so as to be capable of sensing the heat released or absorbed by any catalyst reaction, the arrangement being such that there is no chemical adherence between the heat sensor and the catalyst. The device us useful for detecting potentially explosive gas mixtures at low pressures.
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公开(公告)号：EP0699277B1
公开(公告)日：1997-10-29
申请号：EP94918346.1
申请日：1994-05-13
CPC分类号： F04B37/06 , F04F9/00 , Y10S417/901
摘要： A pumping device is provided which is suitable for pumping mixtures of gases at cryogenic temperatures which is a combination of a cryogenic diffusion pump and a thermal gradient barrier diffusion pump. Specifically the pumping device comprises an elongate body of material capable of withstanding cryogenic temperatures and of sustaining an axial temperature gradient in use, said body having an inlet for the gas mixture and an outlet for one or more gases to be pumped wherein the outlet is fitted with a porous barrier through which gases must pass to exit the device, said porous body having a heating means disposed at its outlet side.
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公开(公告)号：EP0711431B1
公开(公告)日：1997-10-15
申请号：EP94925376.9
申请日：1994-07-21
IPC分类号： G05D23/32
CPC分类号： G01K17/00 , G01N25/4826 , G01N25/4833
摘要： A temperature derivative sensing and regulating device and method is described which facilitates the maintainance of a very stable isothermal environment for an item, apparatus or facility or a constant rate of temperature change. The device comprises a block (6) of material having no internal heat sources, a thermal conductivity greater than 100 Wm1K-1 and a specific heat capacity greater than 400JK-1kg-1. The block (6) is surrounded by means for measuring the heat flow to and from the block (6) and the device is further provided with means for generating a signal proportional to said heat flow and means for interfacing with the controller of a heating or cooling means associated with the item, apparatus or facility.
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公开(公告)号：EP0711431A1
公开(公告)日：1996-05-15
申请号：EP94925376.0
申请日：1994-07-21
CPC分类号： G01K17/00 , G01N25/4826 , G01N25/4833
摘要： A temperature derivative sensing and regulating device and method is described which facilitates the maintainance of a very stable isothermal environment for an item, apparatus or facility or a constant rate of temperature change. The device comprises a block (6) of material having no internal heat sources, a thermal conductivity greater than 100 Wm K and a specific heat capacity greater than 400JK kg . The block (6) is surrounded by means for measuring the heat flow to and from the block (6) and the device is further provided with means for generating a signal proportional to said heat flow and means for interfacing with the controller of a heating or cooling means associated with the item, apparatus or facility.
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公开(公告)号：EP0771418B1
公开(公告)日：1999-08-18
申请号：EP95925922.7
申请日：1995-07-19
摘要： A device and method is provided for measuring the amount of any reactive gaseous component in a single gas or in a mixture of two or more gases. The device comprises a reaction chambre, at least one means for supporting a removable catalyst suitable for catalysing the reaction between the reactive component and the gas or gases and at least one heat sensor for detecting and measuring the heat produced or absorbed by the reaction between any reactive component and one or more other gases. The supporting means is shaped to form a receptacle for holding the catalyst and the heat sensor so as to be capable of sensing the heat released or absorbed by any catalyst reaction, the arrangement being such that there is no chemical adherence between the heat sensor and the catalyst. The device us useful for detecting potentially explosive gas mixtures at low pressures.
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公开(公告)号：EP0699335B1
公开(公告)日：1997-04-16
申请号：EP94917659.8
申请日：1994-05-13
摘要： An evaporative transpiration pump is provided having an inlet (9) for liquids, an outlet (10) for gases, a porous body (1) disposed between the inlet (9) and the outlet (10) and heating means (6) disposed at the outlet side of the porous body (1) wherein the thermal conductivity of said porous body (1) is no greater than 5Wm-1K-1, preferably no greater than 1Wm-1K-1. The pump is particularly suitable for use in multi-column cryodistillation apparatus.
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公开(公告)号：EP0699335A1
公开(公告)日：1996-03-06
申请号：EP94917659.0
申请日：1994-05-13
摘要： An evaporative transpiration pump is provided having an inlet (9) for liquids, an outlet (10) for gases, a porous body (1) disposed between the inlet (9) and the outlet (10) and heating means (6) disposed at the outlet side of the porous body (1) wherein the thermal conductivity of said porous body (1) is no greater than 5Wm K , preferably no greater than 1Wm K . The pump is particularly suitable for use in multi-column cryodistillation apparatus.
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公开(公告)号：EP0699277A1
公开(公告)日：1996-03-06
申请号：EP94918346.0
申请日：1994-05-13
CPC分类号： F04B37/06 , F04F9/00 , Y10S417/901
摘要： A pumping device is provided which is suitable for pumping mixtures of gases at cryogenic temperatures which is a combination of a cryogenic diffusion pump and a thermal gradient barrier diffusion pump. Specifically the pumping device comprises an elongate body of material capable of withstanding cryogenic temperatures and of sustaining an axial temperature gradient in use, said body having an inlet for the gas mixture and an outlet for one or more gases to be pumped wherein the outlet is fitted with a porous barrier through which gases must pass to exit the device, said porous body having a heating means disposed at its outlet side.
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