Application of PT1000 in the fields of healthcare and new energy: high-precision temperature measurement solution

Application of PT1000 in the fields of healthcare and new energy: high-precision temperature measurement solution
PT1000 platinum resistance thermometer is becoming the preferred temperature sensor in fields such as medical equipment and new energy vehicles due to its high sensitivity (1000 Ω at 0 ℃) and low self heating effect. However, these scenarios have extremely high requirements for sensor stability, response speed, and packaging. This article analyzes how PT1000 solves industry pain points and improves system security and efficiency through practical cases.

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1. Medical device application: the precision guardian of life support systems
In medical sterilization equipment and in vitro diagnostic instruments, temperature error should be controlled within ± 0.1 ℃. The advantages of PT1000 are highlighted:
Quick response: The thermal response time t ₀ of the thin film PT1000 (size can be as small as 2.0mm × 2.3mm) Only 0.15 seconds (in water flow), capable of real-time tracking of temperature changes.
Low self heating safety: The working current is ≤ 0.3 mA, and the self heating temperature rise can be ignored to avoid the risk of burns.
Case: A certain sterilization equipment uses PT1000 to monitor the steam temperature of 121 ℃, simplifies wiring through a two-wire connection, maintains a stable accuracy of 0.1 level, and extends its lifespan to 5 years.
2. New energy vehicle battery pack: key to thermal runaway warning
The temperature monitoring of power batteries needs to achieve millivolt level resolution within the range of -40 ℃ to 120 ℃. The solution for PT1000 includes:
High sensitivity warning: The resistance change rate is about 3.85 Ω/℃, which can identify a temperature difference of 0.1 ℃ and provide early warning of thermal runaway.
Anti vibration design: Anti vibration performance ≥ 40g, suitable for bumpy vehicle environments.
Case: A micro PT1000 (2.0mm × 4.0mm) is mounted on the surface of a certain electric vehicle battery pack, and the data is transmitted to BMS through a two-wire system. The temperature measurement error is less than 0.5 ℃, effectively preventing the battery from overheating.

3. Industrial motor temperature monitoring: extending equipment life
The winding temperature of servo motors and charging stations often needs to be monitored up to 150 ℃. The high temperature resistance of PT1000 (insulation resistance>2 M Ω at 500 ℃) ensures long-term stability:
Fast thermal conductivity: PTFE encapsulated PT1000 directly contacts the winding, with a response time three times faster than thermocouples.
Anti interference capability: Platinum nickel lead wire (tensile strength ≥ 9 N) resists electromagnetic interference and has no reading jump.
4. Selection and installation suggestions
• Packaging selection: Teflon packaging for the medical field (corrosion-resistant); Stainless steel armor (shock resistant) is used in the field of new energy.
• Wiring optimization: The internal lead length of the motor should be as short as possible to avoid self heating accumulation.
summary
PT1000 solves temperature measurement pain points in high-precision scenarios through fast response, low power consumption, and robust packaging. It is recommended to prioritize verifying TCR consistency (such as 3850 ppm/℃) and long-term drift values (such as ± 0.04%) during selection

Xi'an Tongzida Technology Co., Ltd. is a leading manufacturer and supplier of advanced thermistor technology, dedicated to providing high-performance temperature sensors for demanding industrial applications. We have comprehensive expertise in microsensor manufacturing technology, special packaging technology, and multi-sensor integration methods to ensure excellent performance and reliability of thermistors. As a trusted supplier of precision temperature measurement solutions, we offer a complete thermistor system, including core sensitive chips, testing systems, and analysis software. Please contact our technical experts sales11@xatzd.com Discuss your specific thermistor requirements and learn how our advanced resistor temperature optimization and manufacturing capabilities can improve the performance and reliability of your temperature measurement system