Slide 1: NTC Thermistors: Thermal Response Time Measurement
NTC Thermistors Thermal Response Time Measurement PT TDK ELECTRONICS INDONESIA A TDK Group Company Temperature & Pressure Business Group • BT TPS PD Batam, Indonesia January, 2022
Slide 2: Thermal response time measurement
Thermal response time measurement Thermal response time can be a crucial parameter when selecting a temperature sensor to match an application. Receiving raw data in the right time enable engineers to optimize energy efficiency and improve operating safety and convenience in various applications. Th
Slide 3: Definition of thermal response time
Definition of thermal response time When a temperature sensor with a temperature T1 is immersed in a medium (air, fluid) with a temperature T2, the change in temperature of the sensor as a function of time follows to a first approximation the following equation: T(t) = T2 + (T1 - T2) . e –t/Ʈ T1 Tem
Slide 4: Thermal response time methods
Thermal response time methods The thermal response time measurements are done at TDK: • in fluid, • in air, • on metal plate. Test setup and procedure of each response time measurement methods are described in the following. © PT TDK ELECTRONICS INDONESIA - A TDK Group Company NTC Thermistors ● Ther
Slide 5: Thermal response time in fluid
Thermal response time in fluid • The thermal response time in fluid is determinded by • Test procedure: a modified two bath method according to EN 60539. • First, the resistance values of all measured NTC samples are determined at three different temperatures in a • Test setup temperature-controlled
Slide 6: Thermal response time in air
Thermal response time in air • The thermal response time in air is determined by a • Test procedure: double air channel method whose temperatures can • First, the resistance values of all measured NTC samples be set separately. are determined at three different temperatures in a • Test setup tempera
Slide 7: Thermal response time on metal plate
Thermal response time on metal plate • The thermal response time on metal plate is • Test procedure: determined by a metal plate with a heater that is • First, the resistance values of the measured NTC sample is powered to get expected surface temperature.T determined at three different temperatures
Slide 8: www.global.tdk.com • www.tdk-electronics.tdk.com
www.global.tdk.com • www.tdk-electronics.tdk.com