What's the difference between a thermocouple and multipoint thermocouple _ instrument1

The thermocouple thermoelectric emfs growth over the course of measuring the temperature, the size of the thermoelectric emfs and thermocouple temperature difference on both ends of the conductor material and, only has nothing to do with hot electrode length and diameter. By welding on both ends of the two different ingredients of conductor, form a loop, directly measuring WenDuan call work side, the terminal end is called the cold end, also known as the reference. When work end and reference end there is temperature difference, will produce thermal current in the circuit, connected to display instrument, the instrument will indicate the thermocouple thermoelectric emf generated by the corresponding temperature value. The structure principle of thermocouple is made up of a conductor, high insulation magnesium oxide, coat 1 cr18ni9ti stainless steel protecting tube, after many integrated control. Thermocouple products are mainly composed of terminal block, terminal and thermocouple basic structure, and with various mounting device. Thermocouple insulation type and hull type two kinds. Can bend, high pressure resistance, heat fast response time and strong and durable many advantages, such as it and industrial use, as measure temperature sensor, and usually display meter, recording meter and electronic regulator, at the same time, also can be used as a temperature sensing element. It can directly measure all kinds of production process from 0 ℃ ~ 800 ℃ in the scope of liquid, steam and gas medium, as well as the surface temperature of the solid. And compared to the thermocouple is flexible, high pressure resistance, thermal response time is short and strong and durable, etc. Multipoint thermocouple is suitable for the production site temperature gradient was not significant, must be measured at the same time measurement on the multiple locations or a single location. Multipoint thermocouple is widely used in large chemical fertilizer in synthetic tower, storage tanks and other equipment. Application of multi-point thermocouple is suitable for the production site temperature gradient was not significant, must at the same time in more than location or position measurement. Widely used in large chemical fertilizer in synthetic tower, storage tanks and other equipment. Main technical parameters of electrical outlet: M27X2, NPT3/4 hot response time: 8 or less s thermocouple as the temperature measurement sensor, usually with temperature transmitter, controller and display instrument, such as process control system, to directly measure or 0 to control all kinds of production process Fluid over a range of 1800 ℃, steam and gas medium and solid surface temperature. Thermocouple temperature measurement principle is based on thermoelectric effect. Connect the two different conductor or semiconductor into closed loops, when the two contacts in temperature is not at the same time, the circuit will produce thermoelectric potential, this kind of phenomenon called the thermoelectric effect, also known as the seebeck effect. Thermocouple can bend, high pressure resistance, heat fast response time and strong and durable many advantages, such as it and industrial prefabricated thermocouple, as measure temperature sensor, through the compensating conductor and display meter, recording meter and electronic regulator.