Heater Tube Skin Thermocouple

Heating Tube Skin Thermocouple employed in critical furnace applications in downstream refineries or petrochemicals, or even in midstream applications. These thermocouples at many installations are often referred to as ‘thick wall’ thermocouples for their rugged construction involving higher than regular thickness. This RTD and thermocouples face harsh process applications involving high temperature coupled with corrosive atmosphere, due to the presence of sulfurous gases. The expansion of the heater tube skin thermocouple causes the movement of the thermocouple, which acts like stresses on the thermocouple. Besides this, the atmosphere contains oxidizing and reducing conditions, which can cause continuous deterioration of the thermocouple. In this category, we feature thermocouples in various installation configurations inside a heater furnace. Depending on its routing, its approach to the tube, location of the burner, the design of the electric thermocouple can be arrived at by using one of the various Model numbers detailed in this category. The construction offers fixed knife edge welded type, and replaceable type thermocouples depending on the specification. The thermocouples can be offered in different diameters, sheath materials of special compositions, and routing configurations. Heater Tube skin thermocouple are used for monitoring surface temperatures on boilers, superheater, or device tubes. they’re available with a weld pad shaped to the curvature of the tube or knife-edge for fast response.

heater-tubes
800 Series

Knife Edge skin thermocouples with different mounting arrangements along the heater tube skin thermocouple

 800 Series Straight section wedge shape ( knife edge ) Skin thermocouple Download PDF⇓
 810 Series90 deg bent Wedge shape ( knife edge ) Skin thermocoupleDownload PDF⇓
 820 Series Wrap around wedge shaped ( knife edge ) Skin TCDownload PDF⇓

Knife edge skin thermocouples with expansion loop/s & various routing options

830 Series Wrap around wedge shaped ( knife edge ) Skin thermocouple with single 2D expansion loop Download PDF⇓

Replaceable type Skin thermocouples with expansion loop/s & various routing options

830E Series Replaceable Skin thermocouple with guide tube + weld pad + shield Download PDF⇓
830F Series Replaceable Skin thermocouple with guide tube + weld pad + shield ( with extension NUN) Download PDF⇓
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