Catalog excerpts
www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 65 Included in our thermowell series are standardized wells of threaded, ANSI flanged, Van Stone and Weld-in types. Threaded wells are made in readily welded or brazed materials for installations requiring seal welding or brazing. The pipe thread provides the mechanical strength, the weld merely seals. ANSI flanged wells consist of a bar-stock well which is permanently welded to a top quality flange. Standard construction uses primary “J” groove weld and a bevel groove secondary weld. Both welds are machined to produce a clean fillet. This double welded construction eliminates possibility of crevice corrosion since no open joints are exposed from either inside or outside the installation. Socket weld types of wells can be installed easily by merely welding into place to form a clean and tight connection. The insertion length “rule of thumb” of ten diameters is not always practical when installing thermowells. Care should be exercised to make certain that the sensitive tip is totally immersed into the medium being measured. Above all, be sure that the dead length — i.e. the length required to pass through walls, pipe fittings, etc. — is taken into account when choosing the necessary insertion length. Our tapered thermowells provide greater rigidity than straight shank styles. They are well-suited to applications of high fluid velocity. The thermowells shown on the following pages are available in standard bore diameters of .260" for thermocouple elements to 14 gauge wire and .385" for thermocouple elements to 8 gauge wire. Both are suitable for use with metal sheathed elements of compatible diameters.
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com Thermo-Couple Products Co. 1-800-727-5646 66 Material - The Longevity Factor In general, the thermowell material chosen for the installation is governed mainly by the corrosion conditions to which the well is exposed. Recommended materials for various services are given in the corrosion table on pages 67 to 69. The high mirror polish given to all stainless and monel wells provides maximum corrosion resistance. Sometimes the major consideration is strength rather than corrosionresistance. For example, a high pressure...
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 67 INTRODUCTION TO THERMOWELLS Thermowell Material Selection Guide Application Material Heat Treating Annealing Up to 704°C (1300°F) Over 704°C (1300°F) Black Steel Inconel 600,a Type 446 SS Carburizing Hardening Up to 816°C (1500°F) 1093°C (1500 to 2000°F) Over 1093°C (200°F) Nitriding salt baths Cyanide Black Steel Inconel 600,a Type 446 SS Ceramicb Type 446 SS Nickel (CP) Neutral Type 446 SS High Speed Ceramicb Iron and Steel Basic oxygen furnace Quartz Blast furnaces...
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com Thermo-Couple Products Co. 1-800-727-5646 68 INTRODUCTION TO THERMOWELLS Thermowell Material Selection Guide Application Material Chemical (continued) Ammonium nitrate All concentration 21°C to 100°C (70 to 212°F) Type 316 SS Ammonium sulphate, 10% to saturated 100°C (212°F) Type 316 SS Barium chloride, all concentrations, 21°C (70°F) Monel, Hastelloy C Barium hydroxide, all concentrations, 21°C (70°F) Low carbon steels Barium sulphite Nichrome,c Hastelloy C Brines Monel Bromine Tantalum Monel Butadiene Type 304 SS...
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 69 INTRODUCTION TO THERMOWELLS Thermowell Material Selection Guide Application Material Chemical (continued) Phosphoric acid 1%, 5% 21°C (70°F) 10% 21°C (70°F) 10% 100°C (212°F) 30% 21 to 100°C (70 to 212°F) 85% 21 to 100°C (70 to 212°F) Type 304 SS Type 316 SS Hastelloy C Hastelloy B Hastelloy B Picric acid, 21°C (70°F) Type 304 SS Potassium bromide, 21°C (70°F) Type 316 SS Potassium carbonate, 1% 21°C (70°F) Type 304 SS, Type 316 SS Potassium chlorate, 21°C (70°F) Type 304 SS...
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com Thermo-Couple Products Co. 1-800-727-5646 70 STANDARD THERMOWELLS 6000 - C - 3/4 - 7.5 - 0 - 0 Series 6000 • Standard Bore Size: .260" • Reduced Tip for Faster Heat Response • Brass Plug and Chain Optional Enter a selection for each item, please fax your inquiry to TCP. 6000 - Example: - - - - CODE MATERIAL S C H D M A Carbon Steel (C1018) 304 Stainless Steel 316 Stainless Steel 446 Stainless Steel Monel Inconel 600 Consult factory for other materials CODE PROCESS CONNECTION “P” 1/2 3/4 1 1/2" NPT 3/4" NPT 1" NPT CODE...
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 71 STANDARD LAG THERMOWELLS 6100 - C - 1/2 - 7.5 - 0 - 0 Series 6100 • Standard Bore Size: .260 • Reduced Tip for Faster Heat Response • Brass Plug and Chain Optional !Metric Ord e rsWelcome Place an mm in the appropriate selection box: Enter a selection for each item, please fax your inquiry to TCP. 6100 - Example: - - - - 100 mm CODE MATERIAL S C H D M A Carbon Steel (C1018) 304 Stainless Steel 316 Stainless Steel 446 Stainless Steel Monel Inconel 600 Consult factory for other...
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www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com Thermo-Couple Products Co. 1-800-727-5646 72 HEAVY DUTY WELL 6200 - C - 3/4 - 7.5 - 0 - 0 Series 6200 • Standard Bore Size: .260" • Tapered Design to Provide Greater Rigidity • Brass Plug and Chain Optional ! Metric Ord e rs Welcome Place an mm in the appropriate selection box: Enter a selection for each item, please fax your inquiry to TCP. 6200 - Example: - - - - 100 mm CODE MATERIAL S C H D M A Carbon Steel (C1018) 304 Stainless Steel 316 Stainless Steel 446 Stainless Steel Monel Inconel 600 Consult factory for other...
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