Ceramic Tubes and Insulation Rods
Ceramic tubes are used when conditions exclude the use of metal, either for chemical reasons or because of excessive temperatures. Their main applications are between 1000 and 1800°C. They may be in directly contact with the medium or may be used as a gas-tight inner sheath to separate the thermocouple from the actual metal protection tube.
Ceramic tubes should be mounted in a hanging position above 1200°C to prevent distortion or fracture due to bending stresses. Even hair-line cracks can lead to contamination of the thermocouple resulting in drift or failure.
It is recommended to insert the ceramic tubes slowly inside at hot process according to DIN 43724, to prevent the tubes against breaking.
| Diameter | Input speed |
| Ø 10 mm | 100 cm/min |
| Ø 15 mm | 50 cm/min |
| Ø 24 mm | 1 cm/min |
