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      1. 產品展示



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        Service intended

        Vanstone type thermowell is produced without any welding process by processing the whole round bar. Since it does not involve any welding process, it is used when high pressure, high velocity fluid and corrosive process media such as penetrating gas exist, and serving to isolate and protect from any leakage. The required flange is not standard and can be provided as an optional extra.

        Standard features

        Selection of thermowell ■ Material
        In general, the thermowell material chosen for the installation is governed mainly by the corrosion condition the thermowell will face. Recommended material for various services are given in the corrosion table. Occasionally, the material consideration is one of strength rather than corrosion. For example, a stainless steel thermowell may be required for a high pressure water service where otherwise a brass thermowell woule be satisfactory from a corrosion standpoint.
        ■ Insertion
        The distance from the end of the well to the underside of the thread or other connection means (Designated as "U") is the insertion length.
        ■ Bore size
        Almost any installation uses several type of temperature measuring instruments. The selection of a standard bore diameter can produce extreme flexibility within the plant.
        ■ Tapered or straight type
        Tapered type thermowells provide greater stiffness for the same sensitivity. The higher strength to weight ratio gives these thermowells higher natural frequency than for equivalent length straight type thermowells, thus permitting operation at higher fluid velocity.
        ■ Option
        Wake frequency calculations in accordance with ASME PTC 19.3
        WISE Inc. offers this as an engineering service.
        ■ Standard "T" length
        Well size 1½" or DN40 : 40 mm
                         2" or DN50 : 45 mm