| 摘要 |
Medical or dental instruments, preferably handpieces having different temperature-measuring devices for measuring the temperature in the instrument or of at least a part of the instrument are described. The temperature-measuring devices are designed, for example, to measure the temperature contacht-freely by detection of electromagnetic radiation or to measure the temperature of an interior of the instrument that can be heated by a heat source. The temperature-measuring devices may be designed, for example, as electrical temperature-measuring devices or may have a magnetic material whose magnetic property is a function of temperature and/or has a temperature-dependent course. The temperature-measuring device may comprise for example, an electrical switching device and a signal device to switch the signal device at least between a first signal condition and a second signal condition when a temperature limit value is reached or exceeded or is underrun. |
