Nicrosil-Nisil thermocouple is the latest base metal thermocouple, developed to improve the drawbacks that type K thermocouple has. The main chemical composition of positive leg Nicrosil(NP) is Ni: Cr: Si≈84.4: 14.2: 1.4; negative leg Nisil (NN) is Ni:
9-26 type high pressure fan, generally used for forging furnace and high pressure forced ventilation, and can be widely used for conveying materials, conveying air and non-corrosive, non-spontaneous combustion, non-viscous substances of gas.