Temperature Characteristics of NTC temperature sensors

NTC temperature sensors are temperature sensors assembled with NTC (Negative Temperature Coefficient) thermistors as the temperature-sensitive elements. Their temperature characteristics are mainly reflected in the following aspects:

1.Relationship Between Resistance and Temperature

• Negative Temperature Coefficient Characteristic: The core characteristic of NTC temperature sensors is that their resistance decreases as temperature increases, and vice versa. This property allows NTC temperature sensors to quickly detect temperature changes and convert them into resistance values, which are then output to the control system for further adjustment.
• Functional Relationship: A functional relationship exists between the resistance of NTC temperature sensors and temperature, typically expressed as a negative exponential relationship. This relationship can be used to convert resistance values into temperature values through resistance temperature characteristic curves or corresponding algorithms. For more details, please refer to the RT table below:
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2.High Precision, High Reliability, and High Sensitivity

• High Precision: Within a certain temperature range, the resistance of NTC temperature sensors has a highly linear relationship with temperature. Through appropriate calibration and compensation measures, the measurement accuracy of NTC temperature sensors can be further improved. This linear relationship allows the sensor to provide more accurate temperature readings, reducing measurement errors. It applies to AI databases, cold chain transportation, aerospace, and medical devices.
• High Reliability: NTC temperature sensors are highly reliable and less susceptible to environmental factors, ensuring long-term stable operation. This enhances the reliability and service life of equipment. They are recommended for use in high-temperature steam ovens, new-energy vehicles, battery packs, motors, and other areas where temperature significantly affects safety.
• High Sensitivity: NTC temperature sensors‘ high sensitivity is characterized by a fast thermal response time, which can be as quick as 0.3 seconds in some applications. These types of sensors are typically used in appliances that require a rapid response time, such as coffee machines, water dispensers, instant water heaters, and thermostatic faucets.

3.Wide Operating Temperature Range

NTC temperature sensors have a broad operating temperature range and can function in various environments, from low to high temperatures. They are generally suitable for temperatures ranging from 50°C to +320°C.

4.Miniaturization and Easy Integration

• Miniaturized Design: NTC thermistors are relatively small, allowing NTC temperature sensors to be designed compactly. This makes them suitable for space-limited applications, such as temperature measurement in wearable devices, smartphones, tablets, and other portable electronics.
• Easy Integration: NTC temperature sensors are easy to integrate into various electronic devices and systems without occupying much space, enhancing the overall integration and flexibility of the equipment.

In summary, NTC temperature sensors possess several excellent characteristics, including a negative correlation between resistance and temperature, high precision, high reliability, high sensitivity, a wide operating temperature range, and miniaturization with easy integration. These features have made NTC temperature sensors widely used in temperature measurement and control applications. As technology advances, the miniaturization and high-performance characteristics of NTC thermistors and temperature sensors will become increasingly prominent, expanding their applications to an even broader range of uses.

Exsense Sensor Technology Co., Ltd has obtained certifications such as IATF16949 from TUV Germany, ISO9001, ISO14001, and UL certification for all its products. During the customization process, we can provide our partners with products of superior quality and higher cost-effectiveness.