| 摘要 |
A temperature-measuring device for a heating/air-conditioning installation, having sensors biased by at least one electrical power-supply source including at least one series branch exhibiting a first and a second terminal coupled to terminals of a power-supply source, the first branch featuring 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, and also 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 where a changeover-switching device is included for reversing the direction of the bias so that the first (CT1) or the second (CT2) sensor is traversed by a current.
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