K type thermocouple temperature measurement range and advantages and disadvantages?

K type thermocouple temperature measurement range and advantages and disadvantages? K type thermocouple materials mainly USES is nickel chrome - nickel alloy composition, the anode ( KP） In the name of the chemical composition is: Ni: Cr = 90:10, the cathode ( KN) In the name of the chemical composition is: Ni: Si = 97:3, it is a very high cost performance to measure high temperature thermocouple, is commonly used in * industrial automation control of a thermocouple. Due to the nickel chrome - nickel alloy has good high temperature oxidation resistance, can be applied to oxidizing or neutral medium. So this kind of type K thermocouple to measure the high temperature of 1000 degrees for a long time, short-term measurable to 1200 degrees. However, it cannot be used for reducing medium, otherwise, the corrosion damage soon, in this case can only be used under 500 degree measurement. It is much cheaper than S type thermocouple, the repeatability is very good, the thermoelectric potential is large, and thus the sensitivity is high, and it has a good linear. Although the measuring accuracy is slightly low, but can satisfy completely the requirements of industrial temperature measurement, so it is an industrial * on commonly used thermocouple. To sum up K type thermocouple advantages mainly has three aspects: 1. Good linearity of thermoelectric emfs. 2. Good oxidation resistance under 1000 ℃. 3. In the splash metal thermocouple with qualitative good. K type thermocouple shortcomings with the following four aspects: 1. Does not apply to yuan gas environment, especially the carbon monoxide, sulfur dioxide, sulfur, hydrogen and other gases. 2. Thermoelectric emfs change when compared with the precious metal thermocouple is bigger. 3. The influence of the Greem rot will produce error. 4. Easily affected by the history phenomenon. Dear customer: our company has a B type thermocouple and armoured thermocouple, S type thermocouple products, you can call our company service special line over the web for more detailed product information, perfect service is our endless pursuit of the United States, welcome new and old customers trust our products of choose and buy, we will serve you wholeheartedly!