What is a temperature sensor? It is a sensor that can sense temperature and convert it into a usable output signal. Temperature detection is needed in various fields such as industry, agriculture, commerce, scientific research, national defense, medicine, and environmental protection, which requires important devices such as temperature sensors or temperature rods to realize temperature detection, monitoring, and control.
Temperature sensors are typically used in conjunction with display instruments, recording instruments, and computers to directly measure the temperature of liquid, steam, and gaseous media, as well as solid surfaces, in various production processes.
So how do you choose the right temperature sensor or temperature probe? The key to selection is to first determine the type of temperature signal, the length and diameter of the probe, and the installation and fixing method.
First, temperature sensors are categorized into four types: thermocouples, resistance temperature detectors (RTDs), NTC thermistors, and CMOS sensors. Thermocouples and RTDs are the most commonly used. Thermocouples have the widest temperature range, from 0℃ to 1300℃. Platinum resistance RTDs have a temperature range of -200℃ to 500℃. Therefore, when selecting a sensor, you need to choose the appropriate sensor type based on the temperature range you are measuring and the application. After selecting the sensor type, you then need to determine the probe length and diameter, as well as the installation method, such as threaded or flange mounting.
