Rika is a sensor manufacturer & solution provider of environmental and weather monitoring for 10+ years
What is the working principle of the temperature sensor?
Temperature sensor refers to a sensor that can sense temperature and convert it into a usable output signal. The temperature sensor is the core part of the temperature measuring instrument, and there are many varieties. According to the measurement method, it can be divided into two categories: contact type and non-contact type. According to the characteristics of sensor materials and electronic components, it can be divided into two types: thermal resistance and thermocouple.
Resistance sensing: Metals change with temperature, their resistance value also changes. For different metals, for every degree of temperature change, the resistance value changes differently, and the resistance value can be directly used as the output signal.
1. Positive temperature coefficient:
①Temperature increase u003d resistance value increase
②Temperature decrease u003d resistance value decrease
2. Negative temperature coefficient:
①Increase in temperature u003d decrease in resistance
②Temperature decrease u003d resistance value increase
Ruiyi Card is committed to developing and providing cost-effective intelligent IoT environmental monitoring products and services, and providing users with accurate, high-quality, and intelligent measuring instruments and solutions. Including: wind energy measurement, solar radiation measurement, air quality monitoring, hydrometeorological monitoring, soil wall condition measurement, water quality monitoring, data acquisition recorders and various weather stations and monitoring sites. Products are widely used in meteorological and environmental monitoring fields such as photovoltaic power generation, smart agriculture, aquaculture, sewage treatment, air quality, wind power generation, and traffic monitoring.
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