Thermocouple and anti-corrosion temperature instrument what is the difference between the two kinds of thermocouple _ instrument

Anticorrosion characteristics of thermocouple 1, thermocouple adopts multi-layer anti-corrosion ( Anticorrosion thermocouple protection tube coating is usually thick wall 316 l and 304 l steel pipe overall sintered ptfe and wear-resistant anti-corrosion layer) Structure, anticorrosive effect and service life of verified by many domestic enterprises long-term use of the facts. 2, anticorrosive thermocouple teflon coating our company adopts advanced the whole sintering process of sintering, and solved the other joint easy to leak problems of manufacturing process is inevitable. The application of this technology makes me anticorrosion thermocouple and other products of the company's average service life ( In the absence of larger wear environment) More than one year. 3, use the site often exist high velocity particles measured medium serious erosion of thermocouple anticorrosive coating, anticorrosive thermocouple in the anticorrosive layer outside my company and a wear-resisting material layer, layer in a environment with scouring can effectively prolong the service life of the coating - 8 Ten times, different from other domestic same type anticorrosive thermocouple. 4, anticorrosive thermocouple are all made of first-class components, the product performance is stable, reliable, service life is longer than the domestic same type anticorrosive thermocouple several times, can work for a long time at temperature 220 ℃ temperature range or less. Ordinary thermocouples from the thermocouple temperature measurement principle, the measured the change in temperature is directly measured by thermocouple resistance change, therefore, the wires of a thermocouple body such as a variety of wire resistance change will affect temperature measurement. Thermocouple is by thermal components ( The resistor body) , wire, insulation materials, stainless steel casing combination solid body, its diameter is generally from 2 to 8 mm, achieve more xiaoke phi is 0. 25mm。 Compared with conventional type thermocouple, it has the following advantages: (1) small volume, no internal air gap, thermal inertia, small measuring hysteresis; (2) good mechanical properties, resistance to vibration and shock. (3) can bend, easy to install (4) long service life. 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. 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.