| 摘要 |
<p>A thermal conductivity detector comprises a Wheatstone bridge having a filament (F) in one arm thereof that is contained within a cavity (C) through which the elutant from a column is passed and means (2) for deriving an output signal from one diagonal of the bridge when the voltage applied across the other diagonal is changed from a small value to a large value. In one embodiment, the voltage applied across the one diagonal of the bridge is changed from a fixed low value (VM) to a fixed high value (VP) and the output signal is the change in the voltage appearing across the other diagonal.</p> |
