A temperature transducer is a sensor that senses temperature and converts it into a usable output signal. It is the core component of temperature measuring instruments. Common types of temperature sensors include:
A thermocouple is a sensor composed of two different metals that measures temperature by utilizing the electromotive force generated when the two metals change temperature. It has a wide temperature range and good high-temperature resistance, making it suitable for measurements in high-temperature environments.
Thermistors (RTDs): A thermistor is a resistive element whose resistance changes with temperature. Common thermistor materials include platinum (Pt100, Pt1000) and nickel (Ni100, Ni1000). Thermistors offer high accuracy and linearity and are suitable for a wide temperature range.
Silicon carbide (SiC) sensors utilize the resistive properties of silicon carbide to measure temperature. They feature high temperature resistance and low heat capacity, making them suitable for high-temperature measurements and fast-response applications.
Resistance temperature detectors (RTDs) are temperature-sensitive resistive elements whose resistance changes with temperature. Commonly used materials for RTDs include nickel-copper (NiCu) and platinum-rhodium (PtRh). RTDs offer high precision and sensitivity, making them suitable for accurate measurement and temperature control applications.
Infrared Temperature Sensor: An infrared temperature sensor uses infrared radiation to detect the surface temperature of a target object. It is suitable for non-contact temperature measurement and can be used to measure the temperature of high-temperature, moving, or inaccessible objects.
These sensors can be widely used in industrial control, temperature monitoring, automation systems, medical equipment, home appliances and environmental monitoring to accurately measure and monitor temperature changes.
