bids are invited for dvc rtps dissolve oxygen analyzer for swas system for 600 mw , dissolved oxygen sensor with detachable cable -3mtr for 600 mw , ph transmitter for 600 mw, make-emerson, model 1056-03-22-an,range 0-14 ph,power supply 230vac , 50hz,output dual 4-20 ma dc, isolated enclosure nema 4x ,ip 65-mounting panel , ph sensor with 3mtr detachable cable - 3900vp-01-10 for 600 mw , conductivity transmitter model-1056-03-20-an for 600 mw , conductivity analyser sensor, model no. - 400-11 , specific conductivity sensor , model no- 400-12 plus 99cb100ft make-emerson, model no.- 400-12 , back pressure regulator- relief valve for sampling system,1 by 4 inch npt-f, viton diaphragm , solenoid valve for sampling system ,3 way,1 by 4 inch npt -f , variable pressure reducing element,part no-vrel , pressure relief valve,ref no-rv procurement of spares for swas and dm plant analysers of total quantity : 41