The difference between two kinds of thermocouple and thermocouple temperature instrument is what _ instrument4

Thermocouple is a kind of temperature sensor, it is smaller than the diameter of a prefabricated thermocouple, flexible, good vibration resistance, suitable for installation in the case of prefabricated thermocouple can't install, the company produces the thermocouple used to introduce thermocouple temperature measuring element, therefore, is accurate, sensitive, fast thermal response time, stable quality, long service life, etc. Thermocouple temperature measuring instrument is commonly used in temperature measuring element, is made up of two different components of the conductor when two ends synthesis loop, when the two junction thermocouple temperature is not at the same time, will produce thermal current in the circuit. If the work end of the thermocouple with the reference entity temperature difference, display instrument will indicate the thermocouple thermoelectric potential of the corresponding temperature value. Application principle: thermocouple is one of the industry commonly used temperature detecting element, thermocouple principle is based on the seebeck effect, the two different conductor on both ends of the composition of connected into a circuit, such as two different connection end temperature, is to produce the physical phenomenon of thermal current in the circuit. Classification: commonly used thermocouple, could be divided into two types: standard thermocouple and non-standard thermocouple. Invokes standard thermocouple refers to the thermoelectric potential and the relationship between temperature, permissible error, and a unified standard score table of thermocouple, it has with matching display instrument to use; Non-standard thermocouple or on the order of magnitude less than the range using standardized thermocouple, generally no unified indexing table, mainly used for the measurement of some special occasions. Although thermocouple is widely applied in industry, but because of his temperature range makes his application by certain restrictions, thermocouple temperature measurement principle is based on the conductor or the resistance of the semiconductor characteristics of the changes with temperature changes. Its many advantages, can also remote transmission signal, high sensitivity, strong stability, compatibility and accuracy are better, but you need to power, can't instantaneous measured the change in temperature. Industrial thermocouple usually use Pt100, Pt10, Cu50, Cu100, platinum thermocouple temperature measurement range is generally 200 - below zero 800 ℃, copper thermocouple is 40 to 140 ℃ below zero. Thermocouple and thermocouple type, but he does not need compensation conductor, and is much cheaper than thermocouple.