发明名称 |
Temperaturregelung in einem tragbaren analytischen Instrument |
摘要 |
Sample analysis in a portable analytical instrument, preferably in the form of a gas chromatograph, benefits from temperature control of one or more zones in the instrument by way of thermal energy developed from an energy reservoir. In a preferred embodiment, analytical instrument performs chromatographic analysis and the selected zone comprises a temperature-controlled thermal chamber, or oven (124) which includes a heating unit (118), a temperature sensor (128), and a cooling unit (130). A separation column column (118) is positioned within the oven (124). The energy reservoir comprises a first reservoir (125) of heating fluid in the form of a compressed light hydrocarbon, a second reservoir (126) of a compressed inert gas, or a combination thereof. A controlled temperature in the oven (124) resulting from the operation of the heating unit (118) and/or cooling unit (130) may be effected in response to a control signal generated by a computer (122). A sample mixture passing through the column (118) is thereby exposed to a desired temperature profile according to a selected program so that the sample (111) will separate into its components for subsequent detection by a detector (124). <IMAGE> |
申请公布号 |
DE69533019(T2) |
申请公布日期 |
2005.04.07 |
申请号 |
DE1995633019T |
申请日期 |
1995.07.14 |
申请人 |
AGILENT TECHNOLOGIES, INC. (N.D.GES.D.STAATES DELAWARE) |
发明人 |
BERGER, TERRY A.;NICKERSON, MARK A. |
分类号 |
G01N27/62;F23Q7/00;G01N25/22;G01N30/02;G01N30/30;G01N30/54;G01N35/00;G05D23/19 |
主分类号 |
G01N27/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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