Laboratory tube furnaces consist of heating coils surrounding a cylindrical cavity where temperature is controlled by a thermocouple. A tube furnace is available as single or multi-zone, horizontal/vertical, split & rotating models. They also come in either continuous or batch rotary tube furnaces. Many tube furnaces are equipped with two or more heating zones and can produce temperatures up to 1800°C. The general design will vary based on process temperature, throughput, atmosphere requirements, characteristics of material, cooling requirements, etc.
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| Company | Carbolite Gero | Carbolite Gero | Carbolite Gero | Carbolite Gero |
| Item | HTRV High Temperature Vertical Tube Furnace | HTRH 1 Zone High Temperature Horizontal Tube Furnace | HTRH-3 | TG3 3 Zone Gradient Split Tube Furnace |
| Catalog Number | HTRV | HTRH 1 | HTRH-3 | TG3 |
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| Description | High Temperature Vertical Tube Furnace, with Molybdenum disilicide heating elements, 1 or 3 heating zones, over-temperature protection and a programmable temperature controller with 24 segments. | 1 Zone High Temperature Horizontal Tube Furnace, with Molybdenum disilicide heating elements, 1 or 3 heating zones, over-temperature protection and a programmable temperature controller with 24 segments. | 3 Zone High Temperature Horizontal Tube Furnace, with Molybdenum disilicide heating elements, 1 or 3 heating zones, over-temperature protection and a programmable temperature controller with 24 segments. | 3 Zone Gradient Tube Furnace, with high quality heating elements and thermal insulation. Low energy consumption with a wide range of mounting configurations. Can be vertically or horizontally oriented and all furnaces are equipped with a thermocouple type N. |
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