Abstract: A vapor processing system which has a vessel for containing a processing vapor generated by heating electronic fluid contained within the vessel. A selected saturated vapor zone level is devined for work product delivered to the vapor zone by generating a signal representative of the actual temperature at one of a plurality of spaced locations within the vessel, generating a signal representative of the desired temperature at the selected location for a saturated vapor zone having a level selected for the work product being conveyed to the saturated vapor zone, and comparing the signals representative of the actual and desired temperatures at the selected location and for varying the output of the heater to change the actual sensed temperature to the desired temperature so that the actual saturated vapor zone level will conform to the desired saturated vapor zone level.

Abstract: A vapor processing system which has a vessel for containing a processing vapor generated by heating an electronic fluid contained within the vessel.