procurement of spares for turbine supervisory instrument ( tsi ) at 210mw atps mppgcl chachai procurement of spares for turbine supervisory instrument ( tsi ) at 210mw atps mppgcl chachai , piezo velocity transducer , extension cable for sensor 10 metre with conduit , displacement sensor reverse mount type , displacement sensor direct mount type for brg 5 &6 , extension cable with conduit , driver , sensor ( differential expansion ) with 1 metre cable , extension cable with 8 meters cable with conduit , driver , power supply unit , vibration monitor , ramp differential expansion monitor , dual thrust monitor , communication monitor , phase marker , relay output module , relay output module , velocity sensor and displacement sensors ( 2 drivers + 2 velocity sensors ) , for ramp differential , for axial shift , for phase marker