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Body temperature is one of the most direct responses to human health. From ancient times to the present, we can more intuitively judge the health status of people through body temperature. Temperature transducer makes this ancient wisdom even more brilliant in modern medicine. Let's demystify temperature transducer for medical applications today.
Medical application temperature transducers mainly include disposable medical application temperature transducers, ablation application transducers and forehead temperature gun application transducers.
Disposable temperature transducer in medical equipment mainly uses NTC thermistors. An NTC thermistor is a thermally sensitive semiconductor resistor. Its resistance value decreases with the increase in temperature and the temperature coefficient of resistance is about 10 times that of metal resistance. The change in the resistance value of the NTC thermistor can be caused by the change in the external ambient temperature. It can also be caused by self-heating due to the flow of current.
The temperature transducer for ablation applications mainly uses thermocouple resistance. Thermocouples work by joining two dissimilar metals together to form a sensing junction. When the temperature of the sensing junction and the free end are different, the thermocouple will develop a voltage between the two wires. The voltage signal can be converted into a temperature reading.
Forehead thermometer and ear thermometer application transducers mainly use thermopile technology. According to Boltzmann's law, the higher the radiation energy, the higher the temperature of the object. The infrared thermometer of the thermopile probe converts the infrared radiation signal into an electrical signal by measuring the radiation energy emitted by the object. After the amplifier and signal processing circuit are corrected according to a certain algorithm and target emissivity, it can finally be converted into the temperature value of the measured target.
That's all for "Demystifying Temperature Transducers for Medical Applications". Our main products are NTC chips, NTC negative coefficient thermistor, temperature transducers, humidity and gas transducers, which are widely used in green automobile industry, smart household appliances, electronic thermometers, etc. If you are in need, welcome to contact us.