procurement of spares of eip make rf type ash level sensing probe and electronics controller for ash handling plant at 1x500mw, unit no. 5, at sgtps, nppgcl, birsinghpur. procurement of spares of eip make rf type ash level sensing probe and electronics controller for ash handling plant at 1x500mw, unit no. 5, at sgtps, nppgcl, birsinghpur. , electronics controller model no. 550 , sensing probe of 600 mm length with 40 nb flange , complete chassis with pcb-i, pcb-ii & transformer , led set(red, green & yellow) for electronics controller , pcb-iii card for sensing probe , rf co-axial connecting cable between electronics controller and sensingprobe