This SAE Aerospace Information Report (AIR) reviews the precautions that must be taken and the corrections which must be evaluated and applied if the experimental error in measuring the temperature of a hot gas stream with a thermocouple is to be kept to a practicable minimum. Discussions will focus on Type K thermocouples, as defined in National Institute of Standards and Technology (NIST) Monograph 175 as Type K, nickel-chromium (Kp) alloy versus nickel-aluminium (Kn) alloy (or nickel-silicon alloy) thermocouples. However, the majority of the content is relevant to any thermocouple type used in gas turbine applications.
SAE AIR46C-2022 history
2022SAE AIR46C-2022 The Preparation and Use of Thermocouples for Aircraft Gas Turbine Engines
2014SAE AIR46B-2014 The Preparation and Use of Chromel-Alumel Thermocouples for Aircraft Gas Turbine Engines
1996SAE AIR46B-1996 Preparation and Use of Chromel-Alumel Thermocouples for Aircraft Gas Turbine Engines
1996SAE AIR46A-1996 THE PREPARATION AND USE OF CHROMEL-ALUMEL THERMOCOUPLES FOR AIRCRAFT GAS TURBINE ENGINES
1956SAE AIR46-1956 THE PREPARATION AND USE OF CHROMEL-ALUMEL THERMOCOUPLES FOR TURBOJET ENGINES