procurement of spares of turbine supervisory instrument (tsi) at 210mw atps mppgcl chachai procurement of spares of 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 , velocity sensor and displacement sensors (2 drivers + 2 velocity sensors) , absolute bearing vibration for bearing no. 5 & 6 , relative shaft vibration for bearing no. 5 & 6 , ramp differential expansion , axial shift/phase mark