| 摘要 |
The invention relates to a temperature-measuring device intended especially for a heating/air-conditioning installation, and comprising sensors biased by at least one electrical power-supply source. It is characterised in that it includes at least one series branch (D1, D2, CT1, CT2) exhibiting a first and a second terminal coupled to terminals of a said power-supply source, the said first branch featuring, on the one hand, a first (D1) and a second (D2) diode head to tail, connected between the first (2) and the second (3) terminal of the series branch (D1, D2, CT1, CT2), and, on the other hand, a first (CT1) and a second (CT2) detector connected in series between the first (2) and the second (3) terminal of the series branch, the common point between the first (D1) and the second (D2) diode being connected to the common point between the first (CT1) and the second (CT2) detector, and in that it includes a changeover-switching device for reversing the direction of the said bias so that the first (CT1) or the second (CT2) sensor is traversed by a current.
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