| 摘要 |
PURPOSE:To enable accurate decision on the acceptance according to the type of a covered wire, by setting a reference value on the decision of deterioration in the covered wire typewise. CONSTITUTION:A measuring device body 1 equipped with a pressure needle 5, a receptacle 6, a displacement sensor 8, a temperature sensor 9 and the like. The receptacle 6 is retractable to the left together with a lever 14. In operation, the receptacle 6 is retracted to allow a covered wire W to be inserted into a broader clearance 15 between the receptacle 6 and a pressure meter 5. The pressure meter 5 presses the wire W with a spring 7 and the displacement changes along the length of the pressure meter 5. At this point, the displacement is detected with a sensor 8 and simultaneously with the measurement of the hardness of a cover body, the sensor 9 gets in contact with the cover body to detect the temperature thereof. In addition, an arithmetic circuit section 2 calculate he hardness of the cover body at a reference temperature by a specified computation processing from the hardness detected with the sensor 8 and the temperature detected with the sensor 9. Based on the hardness, the usable acceptance of the covered wire is decided.
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