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Free Hanging 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 hangning design is generally the most economical of all multi-point designs.
Multi-Guide Tube 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 can be accomplished easily and quickly on site without interrupting the process.
Spring Loaded A leaf spring holds the junction to the inner wall of the thermowell. Spring loaded multi-points respond quickly to temperature changes. Thermocouple replacement requires entire element assembly to be returned to the factory for servicing or replacing the entire element.
Special Applications 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. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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