High Temperature Noble Metal Thermocouple Assembly. Elements are provided to match the ITS 1990 curve.  24 ga. (0.020″) wire is standard – other gauges are available.  Insulators & Protection Tubes w-Cemented Hex Nipple and  are made of Alumina, Mullite, Recrystallized Silicon Carbide.  Cast Iron or Aluminum Screw Cover heads are Standard.  Porcelain Collar installed for Vertical Applications.




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Name Description
Model Number 594
Sensor Type High Temperature Noble Metal Assembly
Insulator Material Alumina (A), Mullite (M)
Optional Inner Tube 1/4" x 3/8" (Std); (M) Mullite, (A) Alumina, (O) No Inner Tube
Primary Tube 7/16" x 11/16" (Std); (M) Mullite, (A) Alumina
ANSI Calibration R, S, B
Accuracy Standard Limits of Error, Special Limits of error (Reference Grade)
Number of Circuits 1, 2
Hex Fitting 1/2" x 3/4"; Steel
Head Material Cast Iron (Std), Aluminum
None None
Name View / Download
Dimensional Drawing