| 摘要 |
<p>PURPOSE:To prevent the quantity of electric power from being given too much or too little, by checking in comparison a resistance value sought by running an inspection electric current to an electric heat line and a resistance value read from the indicating means of a joint, and detecting abnormality, and indicating it. CONSTITUTION:A weak inspection direct current is run to an electric heat line 2 through a connector as a sensor 6 reads the data for electrification, and the resistance value of an electric heat line 3 inclusive of the contact resistance of the connector is measured by means of a resistance sensor 8, and is inputted into a computer 5. And the resistance value read by the sensor 6 and the resistance value measured by the resistance sensor 8 are checked in comparison, and if a resistance value detected surpasses an allowable extent, defect is indicated at an indication 9, and if within the allowable extent, O.K. is indicated.</p> |
