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Horizontal and Vertical Operation Most tube furnaces are horizontally positioned because the sample boat can slide into the furnace tube, and gas can easily flow from one end to the other. Horizontal operation is suitable for general heat treatment, powder calcination, vacuum annealing, and many gas reaction experiments.

4. Gas Analysis and Sensor Research Gas sensors, catalyst sensors, ceramic elements, and functional thin films are typically tested under controlled gas flow heating conditions. Small tube furnaces can create a localized high-temperature environment around the sensing element while keeping wiring, gas connections, and measuring equipment outside the high-temperature zone.

Horizontal operation is typically used for gas-phase transport along the tube, whereas vertical operation is suitable for processes influenced by gravity, particle sedimentation, or specific precursor placement. In certain configurations, the compact heating zone can be moved relative to the tube, enabling rapid sample exposure or retrieval if the mechanical setup is designed for this purpose.

Laboratory equipment selection is often driven by a need for maximum performance; however, many routine experiments do not require large reaction chambers, extensive heating zones, or high power loads. Researchers may simply need to heat a few milligrams of catalyst, a short length of wire, a micro-boat filled with powder, a small substrate, or a sensor component. In such cases, small furnaces offer easier installation, faster integration, and lower operating costs compared to traditional, large-scale systems.

Small tube furnace is a kind of high-temperature experimental equipment with CE verification. It adopts a quick-connecting vacuum flange structure and a high-performance sealing ring, which allows one or both ends of the furnace tube to be quickly opened and closed, which facilitates the frequent picking and placing of samples and improves the experimental efficiency. The characteristic of small tube furnace is that it can work at temperatures up to 1200°C or in a vacuum environment. The furnace tube of small tube furnace can be configured as a 1-inch or 2-inch high-purity quartz furnace tube. The temperature control system of small tube furnace includes 30 heating and cooling curve settings, and its temperature control accuracy reaches +/-1°C. Small tube furnace is mainly used in scenarios that require high temperature and strict atmosphere, especially for the synthesis of materials in the laboratory, heat treatment, sintering and modification of battery materials, and catalyst research. High-temperature processes that require high efficiency and easy operation.