The presented invention describes the development of a measuring method based on the degradation of various chromophoresfluorophores that can be used as quantitative method to elucidate the UV dose within a liquid or as a qualitative visual color-changing chemical indicator of UV sterilization is described. The housing is also constructed with one side that is positioned in a single plane that is easily mounted to a flat surface of the furnace or water heater and can be seated against the surface. A sealing member is disposed within the passage and is suitable for forming a fluid-tight seal between the connector body and the associated fluid line. The DS-SS signal is preferable created by a combination of a baseband signal and a set of separate pseudo noise sequences defining a precision phase signal, a time mark signal, and a time-of-day signal. The search responses received by the user along with attributes and rankings may be stored in the knowledge base for future use. The maintenance suction section sucks in ink near the nozzles as moving in the nozzle arrangement direction, while the positive pressure is being applied to the ink chamber.