The high-temperature metal tube float flowmeter is specially designed and manufactured for measuring medium and high-temperature fluids such as high-temperature heat transfer oil, high-temperature steam, molten salt, and high-temperature gas.

1. High-temperature stability and reliability: It can operate stably for a long time at temperatures that ordinary instruments cannot withstand.  
2. Good precision retention: Through thermal compensation design, it reduces zero drift and range error caused by temperature changes.
3. High safety: It prevents the risk of high-temperature medium ejection due to material failure and seal leakage.
4. Retains the core operational advantages of the float flowmeter: local display, low pressure loss, wide range ratio, making it an easy-to-monitor friendly interface for operators in high-temperature conditions.
5. Wide application range: It covers a wide temperature range from ~200°C to ~400°C+ (up to ~800°C depending on specific design and materials).

1. Heat transfer oil systems: Flow monitoring and protection for heat transfer oil circulation in reactor heating, mold temperature control, etc.
2. Heat medium systems: Flow measurement of high-temperature heat media such as diphenyl and molten salt.
3. Steam systems: Measurement of medium and high-temperature saturated steam or superheated steam (note the influence of dryness).
4. High-temperature gases: Gas flow measurement in hot air furnace supply, process hot air, and flue gas waste heat recovery systems.
5. Petrochemical industry: Measurement of high-temperature oils and process fluids.
6. Solar thermal energy: Flow control in molten salt heat storage and heat transfer systems.

The high-temperature metal tube float flowmeter is the "heat controller". It combines the classic mechanical principle with materials science and thermal engineering, successfully expanding the temperature frontier of its application.