Electrical contact operation signal loop system for main transformer thermometer calibration

• Main Authors: WU ZHIYING, MAI WEIHUI, CHEN ZIHUI, LIN YEMIN, LIAO HAOQUAN, LUO RONGHUA, ZHANG PING, WEN JIANZHONG, SU DAHUA
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2014
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The utility model discloses an electrical contact operation signal loop system for main transformer thermometer calibration. The system comprises an electronic circuit board component connected to a main transformer thermometer and providing an audible signal and a visual signal. The electronic circuit board component includes a circuit board and five functional modules disposed on the circuit board. The five functional modules are a loop terminal module for connecting the circuit board and electrical contacts of the main transformer thermometer, a power supply module supplying DC work power to loops of the circuit board, a buzzer module sending the corresponding audible signal according to any electrical contact operation, a switch module for switching of the electrical contacts between normally-open contacts and normally-closed contacts, and an LED light module displaying the position of one of the electrical contacts making current operation and sending the visual signal. The system provides the audible an