This is the most common and reliable multi-point design. It offers long life with little maintenance. Each guide tube is welded to a plug which is then welded into and becomes an integral part of the wall of the thermowell. If a single sensor should need to be replaced, it an be accomplished easily and quickly on site without interrupting the process. TCP has worked closely with major petrochemical and refinery design companies in the development of multi-point thermocouple assemblies for specialized applications. These designs are currently in service world-wide throughout the petrochemical and refinery industry. TCP Multi-Point Thermocouples are custom made for their applications. Please consult factory before ordering.