| 摘要 |
<p>PURPOSE:To always simply read accurate data by attaching a card on which the data related to the supply of a current is recorded to a pipe joint and detaching this card from a pipe joint to insert the same in the card reading device of a controller power supply. CONSTITUTION:Pipes 13, 13 made of a thermoplastic resin are respectively inserted in an electric welding joint 1 and welded by heating the electric heating wire 14 provided to the inner peripheral surface of the joint 1. When the card 12 attached to the joint 1 is detached to be inserted in the reader 23 of a controller 2, the data of the card is read to be sent to a data processor 28. The atmospheric temp. detected by a temp. sensor 26 is also sent to the data processor 28. This atmospheric temp. is used as the correction data of the card data to determine the pattern of actual current supply control. This current supply control pattern controls a power supply unit 27 to supply a current to the electric heating 14 wire of the joint 1 through a current supply cable 21.</p> |
