Protection Tubes


In applications where contamination from hostile environments is a factor; the use of ceramic and silicon carbide protection tubes is recommended. Hostile conditions can also exceed the melting points of common metals and require the use of noble metal thermocouples (platinum and its alloys). Traditionally, such assemblies include one or two inner porcelain tubes and one outer silicon carbide tube.


7000 Series Metal Protection Tubes

7000 Series Metal Protection Tubes

Protection Tubes Help Insure Longer Life and Continued Accuracy Protects Against Physical Damage, Corrosion, and Contamination Generally Less Expensive than Thermowells

7100 Series Ceramic Protection Tubes

7100 Series Ceramic Protection Tubes

Manufactured Under Rigid Controls to Maintain High Quality Provides Protection at High Temperatures – Alumina 3450°F – Ceramic 3100°K – Silicon Carbide 3000°F

7120 Series Metal-Ceramic Protection Tubes

7120 Series Metal-Ceramic Protection Tubes

Material is LT-1 (77% Chromium, 23% Aluminum Oxide) Good Thermal and Mechanical Shock Resistance (Superior to Ceramic Tubes) High Temperature Applications Up to 2500°F Excellent Oxidation Resistance for Temperatures Over 2200°F