| 摘要 |
<p>An electronic thermometer comprising a platinum resistance sensor (10), a constant current source (20) which impresses a current through such sensor, an amplifier (22) which amplifies the resulting sensor voltage, and an analog to digital converter (30) which digitizes the amplifier signal and supplies the result to a microcomputer (40). The microcomputer (40) corrects for non-linearities in the resistance versus temperature relationship of the sensor and outputs to a display either: -- the resulting temperature equivalent; -- a calculated rate of temperature change; -- a temperature equivalent representing the temperature; or -- a temperature equivalent representing either the minimum or the maximum temperature measured since power has been applied to the instrument.</p> |
