The temperature sensor can be said to be the most widely used sensor in their lives. It is not too much to describe its application scope from "from palm to the universe".As small as the most commonly used household appliances and smartphones in our lives, there are existence in aviation aircraft and satellites.
Temperature sensor price
The temperature sensor is generally 20 or 30 yuan, and the better market price is 40 or 50 yuan.
The application of temperature sensor
The application of temperature sensors in life is countless. It can be said that as long as the temperature parameters need to be detected, the temperature sensor can be seen. Common electronic thermometers, temperature alarm, water heater, etc. are almost involved in the temperature.The local area has the application of temperature sensors.Most of our home electrical examples in our lives such as: air conditioning, lit kettle, computer, indoor thermometer ... We can also see digital marks of real -time temperature in various public places. These placesThey all have the application of temperature sensors.Even in aerospace and various high -tech fields, temperature sensors are indispensable and important components.
What are the temperature sensors
1. Contact temperature sensor 2. Non -contact temperature sensor contact type temperature sensor characteristics: The sensor directly contacts the temperature measurement with the measured object. Because the heat of the measured object is passed to the sensor, the temperature of the measured object is reduced, especially in particularThe heat capacity of the measured objects is small and the measurement accuracy is low.Therefore, the prerequisite to measure the real temperature of the object in this way is that the thermal capacity of the measured object is large enough.Non -contact temperature sensors mainly use the heat radiation of the measured object to emit infrared rays, thereby measuring the temperature of the object, which can be remotely tested.Its manufacturing cost is high, but the measurement accuracy is low.The advantage is that it does not absorb heat from the measured object; it will not interfere with the temperature field of the object measured; continuous measurement will not produce consumption; fast response, etc.
Temperature sensor model
We can be divided into three major categories: platinum thermal resistance temperature sensor, thermocouple temperature sensor, and thermistor temperature sensor according to the temperature sensor, thermocouple temperature sensor, thermocouple temperature sensor.For platinum heat resistance temperature sensors, its platinum heat resistance is changed by changing the temperature of platinum wire depending on the temperature.According to the size of the resistance value R (℃) at 0 ℃, we can be divided into 10 ohm and 100 ohm. The range of temperature measurement is -200 ~ 850 ° C.The models of PT100 platinum hot resistance are armored, socket types, etc.In addition, our measured temperature range is from -200 degrees Celsius to 150 degrees Celsius, and -50 degrees Celsius to 850 degrees.This can be applied to an industry or a precision instrument and instrument industry with small temperature errors.
Temperature sensor work principle
Temperature sensor refers to a sensor that can feel the temperature and convert it into an available output signal.The changes in the sensitive temperature make the resistance value of sensitive components (such as: thermal resistance, thermocouple, etc.) change, so as to change the output voltage in the circuit.When the temperature changes, the speed of the light in the material will be changed, that is, the refractive index in the light path will change when the temperature changes. At this timeDuring the temperature.

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