High Temperature Thermocouples are defined as thermocouples which typically operate at temperatures above the upper temperature limits of conventional base metal thermocouples: 2100°F and greater. Temperature is the most important factor in the selection of thermocouple materials for high temperature sensing. At such elevated temperatures, the type of atmosphere is another critical factor in the selection of thermocouple materials for specific high temperature sensing applications. These factors have been given careful consideration by TCP’s engineering staff during the development of this literature. TCP’s high temperature thermocouple manufacturing capabilities are not limited to the basic designs presented in this catalog and we openly invite your special applications and requirements. TCP is truly the custom thermocouple company! www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 41

NOTE: Molybdenum and Tantalum sheaths are not recommended for use in oxidizing atmospheres. Tantalum and Plat. 10% rhodium sheaths are not recommended for use in reducing atmospheres. Molybdenum and Aluminum Oxide sheaths are not bendable. All Thermocouples with Type C or D wires are backfilled with inert Argon Gas to prevent oxidation. Calibration services traceable to N.I.S.T. are available; consult factory. Grounded junctions (W2) are not available with Aluminum oxide sheaths. Thermocouple Material Combinations and Their Applications Thermocouple Material Combinations Maximum Temperatures...

www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com Thermo-Couple Products Co. 1-800-727-5646 42 STANDARD THERMOCOUPLE Series 300HT • For High temperature (2100°F and Greater) Applications • Industry Standard Color- Coded Quick Disconnect • Very Popular and Versatile Design • Argon Chamber Available • Commonly Installed with Compression Fittings (Adapter) See pgs. 118 &119 Enter a selection for each item, please fax your inquiry to TCP. 300HT - Example: - - - - - - - IMMERSION LENGTH “L” Specify in inches 01 to 24. For lengths over 24 inches consult factory. CODE TERMINATION...

www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 43 TRANSITION JOINT THERMOCOUPLE Series 400HT • Ideal for Limited Space Applications • For High temperature (2100°F and Greater) Applications • Industry Standard Color-Coded Quick Disconnect or Bare WIres • Has a Rugged, Sealed Transition • Argon Chamber Available • Commonly Installed with Compression Fittings (Adapter) See pgs. 118 &119 Enter a selection for each item, please fax your inquiry to TCP. Example: LEAD LENGTH “X ” Specify in whole inches. (16 in. increments standard)...

www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com Thermo-Couple Products Co. 1-800-727-5646 44 BASIC THERMOCOUPLE ELEMENT Series 800HT • For High Temperature (2100°F and Greater) Applications • Bare Leads Provided for Terminations of Your Choice • A Replacement Thermocouple Element Enter a selection for each item, please fax your inquiry to TCP. 800HT - Example: - - - - - - CODE OTHER PERTINENT DATA 0 999 NONE Special Request Consult Factory 800HT C - F - 14 - BO - W4 - MOL - 0 CODE WIRE CALIBRATION R S B C D Plat. 13% Rhod./Plat. Plat. 10% Rhod./Plat. Plat. 30% Rhod./Plat....

www.tcproducts.com a division of Marsh Bellofram www.marshbellofram.com 1-800-727-5646 Thermo-Couple Products Co. 45 ! Metric Ord e rs Welcome Place an mm in the appropriate selection box: 100 mm MINIATURE HEAD THERMOCOUPLE Series 900HT • For High Temperature (2100°F and Greater) Applications • Supplied with a Lightweight Miniature Screw-Cover Head • Waterproof Cover Available • Argon Chamber Available • Commonly Installed with Compression Fittings (Adapter) See pgs. 118 &119 Enter a selection for each item, please fax your inquiry to TCP. 900HT - Example: - - - - - - - CODE OTHER PERTINENT DATA...