The definition of pt100 temperature sensor

Pt100 temperature sensor is a kind of common temperature measurement instruments, mainly for temperature detection in industry. Temperature is a basic physical quantities, all the process of nature is closely related with temperature. PT100 temperature sensor is very important for the user, the definition of the project is for everybody detailed introduction of the definition of PT100 temperature sensor.

temperature sensor is the earliest development, the most widely used type of sensor. The temperature sensor market share more than the other sensors. From the early 17th century people began to use temperature measurement. With the support of semiconductor technology, the century successively developed a thermocouple sensor, semiconductor PN junction temperature sensor and integrated temperature sensor. Correspondingly, according to the laws of the interaction between wave and material, successively developed acoustic temperature sensors, infrared sensor and microwave sensor.

conductor of two kinds of different materials, such as connected together, at some point of the heating connection, at the site of the they don't heat potential difference will occur. The potential difference value associated with the temperature of the heating part of points, and it has to do two conductor material. This phenomenon can be found in a wide range of temperatures, if accurate measuring the potential difference, to measure the heating part of the environment temperature, can accurately know the temperature of the hot spots. Because it must have two different material of the conductor, so called 'thermocouple. Different material to make the thermocouple used in different temperature range, their sensitivity is also each are not identical. The sensitivity of thermocouple refers to add 1 ℃ hot spot temperature changes, the output variation of potential difference. For most of the metal material support thermocouple, this value about between 5 ~ 40 ℃ uv.

thermocouple sensor has its own advantages and defects, its sensitivity is lower, easily affected by environmental interference signal, also easily affected by preamplifier temperature drift, therefore not suitable for measuring the temperature of the small change. As a result of the thermocouple temperature sensor sensitivity has nothing to do with the thickness of material, use very fine material can make PT temperature sensor. Also due to the production of thermocouple metal materials have good ductility, the slight temperature measuring element has high response speed, can measure the process of rapid change.

temperature sensor is the most commonly used one kind of various kinds of sensors, and the modern form of temperature sensor is very small, it is to make it widely used in the areas of production practice, also provide countless convenience to our lives and functions.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor