Industrial & semiconductor applications require high heat in a centralized location. BCE designed a heater platen with the goal of 900°C operation, fast ramp & soak of at least 800°C. When tested in our BCE Lab in Hayward California, we were able to push this heater further and achieved upwards of 1,050°C.
After the heater stabilized from 800°C to 950°C, the surface thermocouple on the edge to the internal thermocouple (approximately 180° away), there was a 1% to 2% delta.
Ramped heater from 23°C to 1,000°C in 19 min. under 2" thick ceramic fiber insulation. The heater was held at this temperature for 1 hour, and it intermittently hit 1,050°C.
The video below (coming soon) shows a test in atmosphere with no insulation which is less efficient but more interesting to look at.
BCE does not recommend operation above 900°C as this can drastically impact the life of the assembly. Furthermore, high-temperature operations should be in a vacuum/oxygen-free environment, and use of insulation is advised.