Tender For design, supply and installation of universal locomotive air dryer test rig ( co mputerised air dryer test rig-humanmachineinterface) for measuring various parameters ( purge loss,pressure drop and temperature without any manual calculation) of air dryer a s per enclosed specification. item to be designed to meet rdso smi no. rdso/2017/el/smi/0305 rev0 issued on 17-04-2017. [ warranty period: 30 months after the date of delivery ]