K type thermocouple how points are negative

K type thermocouple is above 500 ℃ of dosage * big metal thermocouple temperature measurement area, its usage is the sum of other metal thermocouple. Today we come to understand how the K type thermocouple is negative. First of all we are to understand what is negative. The anode ( KP) In the name of the chemical composition is: Ni: Cr material 90:10, the cathode ( KN) The chemical composition of the is: Ni: Si material 97. K type thermocouple linearity, thermoelectric emfs is bigger, so can be used for oxidizing, inert atmosphere. But K type thermocouple cannot directly at high temperature for sulfur, resilience and recovery, oxidation atmosphere and vacuum alternately, also don't referrals for weak oxidizing atmosphere. It is very nickel-chromium alloy (containing 10% chromium KP) , the negative is extremely containing silicon 3% nickel silicon alloy ( KN) 。 Therefore, armoured thermocouple how points are negative? According to this feature, use the magnet can then identify local armoured thermocouple of positive and negative pole. As for the other thermocouple is negative to distinguish is also very simple, first is nickel chrome - Nickel silicon thermocouple, its two wire has obvious color discrimination, there is a green, one is gray, green is positive, if be armoured thermocouple wire, can use a small magnetic materials, on the cathode surface, the root is the gray silk, if have the absorption is negative. Dear customer: hello, our company is a strong technical force of the development of high quality, for the majority of users with high-quality products and complete solutions and the best technical services company. The main products are platinum rhodium thermocouple S type thermocouple sheathed thermocouples tungsten-rhenium thermocouples, etc. This enterprise uphold sincerity, with the purpose of the implementation of quality and with enterprising societe generale, with a firmer step climb the new peak unceasingly, contribute to national automation industry, welcome new and old customers to rest assured the choose and buy the desired products. We will serve you wholeheartedly!