Anticorrosive 316 Material, High Temperature Resistant Thermal Resistor

A thermal resistor is a sensor that measures temperature by utilizing the characteristic that the resistance value of a metal material changes with temperature. Generally, the higher the temperature, the greater the resistance value of the metal, and there is a definite functional relationship between them.

1. NTC Thermistors
   • Characteristics: Negative temperature coefficient, resistance decreases significantly with temperature increase, high sensitivity but poor linearity.
   • Applications: Motor overheating protection, lithium battery over-temperature monitoring, environmental temperature compensation.
2. PTC Thermistors
   • Characteristics: Positive temperature coefficient, resistance increases sharply after a specific temperature point, used for temperature switches and current limiting protection.
   • Applications: Industrial temperature control, household appliances (such as electric heaters).

• Wide measurement range: Especially for Pt100, it covers a range from near absolute zero to hundreds of degrees Celsius.
• Good linearity: The curve of resistance versus temperature is relatively smooth, facilitating signal processing.
• Good interchangeability: Standardized production allows components of the same model to be interchangeable.

• High-temperature fields: Monitoring the temperature of molten iron in the metallurgical industry (1600℃), and the cooling agent system of nuclear power reactors.
• Low-temperature fields: In the cold chain transportation of vaccines (-70℃), dual-redundant thermal resistors ensure that the temperature fluctuation is ≤ ±0.5℃.
• Special environments: In deep-sea exploration (high pressure) and corrosive chemical environments, thermal resistors encapsulated in 316L stainless steel or nickel-based alloys can work stably for a long time.
• Industrial automation: Process temperature control in fields such as steel, petrochemicals, and power, such as real-time monitoring of heating furnaces and distillation columns.
• New energy industry:
  • ① Thermal management of power batteries: The purchase volume of thermal resistors in the new energy vehicle field is expected to increase by 35% year-on-year in 2025.
  • ② Temperature monitoring of photovoltaic inverters and wind power converters to improve power generation efficiency and equipment lifespan.
• Medical and scientific research:
  • ① Temperature calibration of medical incubators and MRI equipment to ensure the activity of biological samples.
  • ② High-precision temperature field control in laboratories to support material research.