Fully programmable(time & temperature) GC system. Multi-linear programming capability using up to a maximum of five staged increments within a time maxima of 655 minutes. Programming and operational control is accomplished via the multifunctional interactive keypad. The keypad also provides for LED display of system parameters, program monitoring, file storage(10 separate file slots) and miscellaneous features. The flow control module includes four ports to accommodate detector gas components(air and hydrogen for FID) and carrier/makeup gas. All temperature zones(column oven, injector and detector) are overheat protected.