| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To recognize a model name and the like of a connected current sensor by a measuring device body while minimizing a design change of an existing configuration, in a current measuring device which uses the current sensor which is connected to the measuring device body and selected according to a measuring application or the like. <P>SOLUTION: A DC voltage source 21 which generates a prescribed reference DC voltage Vref is connected to a signal input terminal 20a provided to the measuring device body 20 side via a voltage dividing resistor R2 that constitutes a voltage-dividing circuit together with a shunt resistor R1 included in the current sensor 10. Based on this configuration, a measurement calculation control unit 27 recognizes the model name and/or characteristics of the connected current sensor 10 from the divided voltage of the reference DC voltage Vref produced through voltage-division by the resistors R1 and R2 when the current sensor is connected. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
