Smart-Trak 2 is a redesign of the Series 100 digital mass flowmeters and controllers. Expanded functionality includes high accuracy and great flexibility in multiple gases, Dial-A-Gas Technology, in-field adjustable calibration, a Pilot Module (mounted or hand-held) that lets users view and change critical control functions in the field, frictionless-hovering direct-acting control valve technology, and Modbus RTU networking capability.