Bienvenido al portal web de Spanish
Hemos detectado que puede preferir el sitio Global. Utilice el menú desplegable de idiomas arriba para cambiar su selección si es necesario.
Go to Global
Bienvenido al portal web de Spanish
Hemos detectado que puede preferir el sitio Global. Utilice el menú desplegable de idiomas arriba para cambiar su selección si es necesario.
Heat treatment is a Nadcap℠ “special process”. Any process that can change or alter the physical or material integrity of a part by introducing stresses through mechanical, thermal, or chemical operations can be considered a special process and special attention must be paid to avoid potential defects. AMS2750 was created to provide standardized requirements for pyrometry (temperature measurement) in the heat treatment of products for the aerospace industry. Organizations need qualified employees and a well-documented set of approved procedures and equipment to provide evidence to demonstrate both the procedure and the results of each batch processed. Nadcap acts as the “special process” approval body for aerospace manufacturing and is administered by the Performance Evaluation Institute (PRI). Periodic audits are conducted to ensure facilities meet the requirements. AMS2750 is also referenced in other special process standards and has been adopted in various forms for the automotive (CQI9), oil and gas, and other industries.
Discover how our AMS2750H pyrometry solutions can help you:
The AMS2750 specification covers pyrometry requirements for equipment used in the heat treatment of metallic materials. An overview of the main sections covered by Eurotherm products is given below. For further information, please refer to AMS2750H standards (www.sae.org).
Figure 1
Figure 2
Temperature sensors (section 3.1)
This section of the standard describes the accuracy, use, type, and calibration requirements of the sensor. Figure 1 provides an example of the most common thermocouple types and accuracy requirements.
Thermocouple construction includes both expendable thermocouples (any part of the thermal element exposed to the process environment) and non-expendable thermocouples (thermal element protected from the process environment, e.g. metal sheath).
The use of non-expendable base metal charge thermocouple is temperature dependent.
The control thermocouple replacement period should be based on SAT, TUS, recalibration, trend analysis and results data.
Figure 3
Instrumentation (section 3.2)
This section describes the instrument’s operation, type, calibration and accuracy requirements. Figures 3 and 4 describe the main instrument type requirements provided by Eurotherm.
Recording instruments should be checked annually to an accuracy of ±1 min/h using an external timer (timer calibrated every 2 years to ±1 s/min). A possible alternative is to document digital synchronization with NIST (or equivalent) via satellite, Internet, or telephone (at least monthly) to meet these accuracy requirements.
Figure 4
Heat treatment equipment (section 3.3)
This section defines the uniformity tolerance of the furnace class (1-6) and the instrumentation type (AE).
The SAT (section 3.4) describes a probe check to evaluate the variation of control systems with a separate master thermocouple and field instrument.
The TUS (section 3.5) is used to evaluate the temperature variation within a qualified work zone with respect to the setpoint temperature.
Figure 5
Figure 6
When subjected to the necessary field calibration, the following Eurotherm manufactured instruments are suitable for use in aerospace (Nadcap/AMS2750) and automotive (IATF16949/CQI9 version 4).
Process control or registration (AMS2750H table 7)
Calibration to achieve ±2.0°F or ±1.1°C or ±0.2% of temperature, whichever is greater.
Figure 7
6000 Series Chart Recorder, Models: 6100A TUS and 6180A TUS with external CJC and fast acting accuracy to meet ±1°F or ±0.6°C or ±0.1% of temperature, whichever is greater.
¹Devices for use in data acquisition (AMS2750H 3.2.4). See table below for electronic logging solutions. Simple Network Time Protocol (SNTP) is available on the 6000 Series Loggers, nanodac Logger/Controller, PAC (models T2550, T2750) and Eycon 10/20 to provide digital synchronization to help meet logging accuracy.
Figure 8
Eurotherm’s data logging and control solutions are IoT-ready, providing a layer of data integrity within open IoT platform system architectures. Eurotherm’s engineered solutions include SCADA, MES and IIoT system platform technologies to improve information visibility, data access and operations management. Our products, systems and services are designed with cybersecurity in mind , helping the digital transformation to Industry 4.0 technology .
Controladores Programables EPC2000 
EPC3000 controladores programables 
E+PLC400 Versatile Precision PLC 
nanodac™ Registrador / controlador 
Videoregistradores 6100A/6180A