tender for purchase of m/s rotex make positioner for gr fan control valves of unit 4 at 4x270 mw btps manuguru site , lumpsum total price for the following work: posidapt smart positioner model expert - basic diagnostics input signal 4-20ma enclosure aluminium cover, aluminium body servo fail freeze pneumatic port connection 1/4 npt communication hart module position transmitter (4 to 20 ma) cable entry 1/2 npt temperature -20 °c to +80 °c certification none remote mount none model code rtx-7-2-4-2r-h-p-4r note shaft to mount new fail freeze positioner in place of old positioner shall be provided as detailed in tender specification number: