PLEASE PROVIDE US THE CKT. DIAG OF GAS LEAKAGE DETECTION AND AUTO ON/OFF SYSTEM.......URGENTLY

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I need to do my final year project.so,it is based on oil and gas.so,my project that i need to do is gas detector in plant.but,it must by using plc.so,how can i do?the ladder diagram,equipment n the diagram of the project.i hope u all can help me.

To get full information or details of major project of gas leakage detection auto on off gas system circuit diagram ppt please have a look on the pages

http://nieclko.acdocs/LGEC005_LPG_GAS_Le...5B1%5D.pdf

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