Thermocouple elements are mounted to the desired length then bundled together. This type of assembly is often small in diameter allowing the thermocouples to fill up the inner area of the thermowell which reduces thermal lag. Thermocouple sensors can be replaced, but the unit must be returned to the factory. The free hanging design is generally the most economical of all multi-point designs. 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.