| 摘要 |
PURPOSE:To make the output approximately 0V at 0 deg.C corresponding to each kind of a rated temperature measuring resistance body without being influenced by the resistance when a change-over switch is turned ON, to enlarge the dynamic range, thereby to measure the temperature with high accuracy. CONSTITUTION:A plurality of reference resistances R01, R02, R03 are provided, which are selected by change-over switches (f), (g), (h) corresponding to the kind of a temperature measuring resistance body 2. The difference of outputs of the temperature measuring resistance body 2 and the selected reference resistance is operated by an operational amplifier 3. |
