Processing solution delivery system having a supply tube and level detection sensor unit for use with a photographic processor

A chemical or processing solution delivery system and method for use in a photographic processor is disclosed. The system includes a heating chamber which is adapted to receive a predetermined amount of processing solution therein, and heat the processing solution prior to delivery of the solution to an associated processor. The heating chamber includes a member which functions as a supply tube for supplying solution to the chamber and a level detection sensor for detecting the level of solution in the chamber.