| 摘要 |
PURPOSE:To accelerate responding properties, and to enable a use by a reducing flame and a use by a flame at a high temperature by employing an aluminum bronze group material for an external element and a constantan group material for an internal element. CONSTITUTION:A constantan group material, a principal ingredient ratio thereof consists of Ni 40% and Cu 60%, is used for an internal element 1 constituting a thermocouple in the same manner as conventional devices. An aluminum bronze group material is employed for an external element 2. It is preferable that the ratio of components of the aluminum bronze group materials extends within a range of Al:5-12%, Fe:0.5-5%, Ni:6.0% MAX, Mn:3.5% MAX, Cu: the remainder. The responding properties of the thermocouple is made remarkably better than conventional products using a chromel group because the thermal conductivity of the aluminum bronze group employed as the external element will be extremely larger than the chromel group. |
