▎ 摘　　要

NOVELTY - The sensor has a connection portion (330) braided by a thread made of a material having chemical resistance or chemical resistance so that both sides connect a first fixing portion (310) and a second fixing portion (320) so that a first detection line (100) and a second detection line (200) maintain a constant distance. A first sensing wire is configured by coating a composition for an electrode including positively charged graphene oxide on the surface of a wire-shaped substrate made of stainless steel. A second sensing wire is configured by coating a composition for an electrode including negatively charged graphene oxide on the surface of a wire-shaped substrate made of stainless steel. The positively charged reduced graphene oxide exhibits a surface charge by the NH3+ functional group, and the negatively charged reduced graphene oxide exhibits a surface charge by the COO-functional group. USE - Cable type leakage detection sensor for detecting leakage of water, acid, alkali, oil and organic solvent. ADVANTAGE - The cable-type leakage detection sensor is braided with flexibility while maintaining the spacing of the two cable portions by a thread having chemical resistance or chemical resistance, so that when installed on the floor the sensor has excellent adhesion to the ground and has excellent leakage detection performance. The leakage is detected by resistance and conductivity method and leakage by capacitance method as the two-stranded cable portion maintains a certain distance, so the sensor is selectively used according to the installed site situation. The sensor is excellent in corrosion resistance against high concentration strong acids and strong bases by using graphene and organic fluoro resin, which are carbon materials, and is also surface-modified, charged and reduced by an electrode composition containing graphene oxide. Since the surface of the substrate is coated, the sensor provides excellent reactivity due to a large amount of change in capacitance value. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the cable type leakage detection sensor. First detection line (100) Second detection line (200) First fixing portion (310) Second fixing portion (320) Connection portion (330)