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330 Series Thermocouple & Resistance Thermometer assemblies with
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Ms Mi Thermocouple or Resistance Thermometer sensor fitted into a terminal head, and provided with head extension and drilled bar stock thermowell would form a typical complete assembly ready for use in the application, designed for. The design of the complete assembly depends on various process parameters, such as, temperature, dynamic pressure, flow velocity, abrasive nature of process fluid, intricate nature of installation and insertion lengths required.
ASME performance test code PTC 19.3 gives a basis for arriving at a design of thermowell for use on pipings carrying process fluids. We recommend that insertion lengths are checked for safe design as per ASME PTC 19.3
The assembly is typical for use in Power Plants for use on steam and water services.
Thermowells are available in standard AISI 300 series stainless steel such as 316 SS, 304 SS, 321 SS.
The standard execution as shown in this leaflet is with plated CS extension and Aluminum head with conduit entry of 1/2" NPT(F) and well entry M 20 x 1.5. Assemblies with longer extension length to locate cold end termination away from the installation can be supplied. Specify code 10 and requirement of extension length. The thermocouple junctions are ungrounded unless specified otherwise.
| Elements | |
| Sheath Diameter | |
| Sheath Material | |
| Head Type | |
| No of entries | |
| Well Material | |
| Well Insertion U mm/inches | Define eg. 150mm |
| Well Extension T mm/inches | Define eg. 50mm |
| Head Extension | N mm/inches Define eg. N=100 |
| Process Connection | |
| Options | Select and enter the options required
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