Tender For bid to ras corrigendum : supply of group 1 in line ultra sonic flowmeter 8 inch or higher 600 series with accessories , group 1 in line ultra sonic flowmeter 4 inch or higher 600 series with accessories , group 1 spare sensor assembly for inline ufm , group 1 spare electronics comprising of all cards , group 1 supervision charges for installation , group 2 in line ultra sonic flowmeter 6 inch or higher 600 series with accessories , group 2 spare sensor assembly for inline ufm , group 2 spare electronics comprising of all cards , group 2 supervision charges for installation