The “AMS” name in the standard is an abbreviation of “Aerospace Materials Specifications”. The standard is published by SAE Aerospace, part. I am relatively new to being a provider of heat treat services and am trying to get some clarification on AMS D. The specification identifies. Does AMS D require a statement of compliance to the specification (AMS D). printed on, or provided with Certificates of Calibration for an instrument.
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The sensor representing the hottest location per 3. AMS temperature uniformity mode available only on the Multitrend SX lets you use the recorder as a field test instrument to do a temperature uniformity survey, and create a data file used to generate required reports.
This specification is not applicable to heating, or to intermediate thermal processing unless specifically referenced by a material or process specification. It is permissible to divide the roll into shorter length rolls that do meet the end to end tolerance specified in 3.
Instrumentation – Refrigeration Equipment and Quench Systems: Color codes in accordance with other national standard s may be used. Control, monitoring, and recording sensors shall comply with Table 1. The roll calibration method shall not be used for rolls over feet meters if the difference between the highest and lowest calibration readings of the sample thermocouples at any calibration temperature exceeds the requirements in 3.
The results of calibration shall be documented. The purchaser reserves the right to witness any of the tests or calibrations specified herein to ensure that processing conforms to the prescribed requirements, but such witnessing shall not hinder operation of the facility. At a minimum the report shall include: Sensitivity as required by Table 3, Note 4? Calibration accuracy and frequency requirements shall be in accordance with Table 3.
In addition, if subsequent internal instrument adjustments or offsets are made to achieve SAT requirements, the effect on the TUS range or distribution shall be considered as the range will shift upwards or downwards in response to the internal adjustment or offset. All required locations need not be traversed simultaneously; several traverses may be made to survey all locations.
Working with AMSE and AMSD
Furnaces used for those processes whose required atmospheres could contaminate the test sensors i. The term furnace includes ovens. This specification a,s to laboratory furnaces to the extent specified in 3.
If this method is used, the number of TUS sensors shall be as described in Table 11 based on the volume of the work zones tested. Initial surveys shall be performed at the highest and lowest traverse speeds used in production.
Maximum number of uses or maximum elapsed usage time, whichever occurs first, shall be as follows: A primary standard sensor together with a primary standard instrument shall be used to calibrate secondary standard sensors.
A standard that has been calibrated as required in Table 1 to a relevant National Standard. The temperature range of thermal processing equipment where temperature uniformity has been tested and found to be within required 2750s as specified in 3.
System accuracy tests shall be performed using a test instrument meeting the requirements of Table 3 and a test sensor meeting the requirements of Table 1. If the furnace work zone volume is cylindrically shaped, four TUS sensors shall be located 90 degrees apart at the periphery and one shall be located at the center.
Applicable correction factors shall be applied algebraically.
THERMOCOUPLES COMPLIANT WITH AMS 2750D
Any combination of test, graphics, data, audio, pictorial, or other information representation in digital form that is created, modified, maintained, archived, retrieved, or distributed by a computer system. Print intervals shall not exceed 15 minutes. Honeywell X-Series paperless recorders now have features that make it easier for users to comply with AMSD standards.
Quenchants are usually delivered by immersion, spray, or fog. Regardless of the calibration procedure used, it shall comply with the requirements of Table 3.
The process of adjusting an instrument or compiling a deviation chart so its 2750 may be correlated to the actual value being measured.
In addition, any offsets or adjustments shall remain in place during all subsequent heat treatments in the temperature range where the offsets are applied.
Working with AMS2750E and AMS2750D
Additional TUS sensors shall be uniformly distributed throughout a plane perpendicular to the conveyance direction. A furnace containing molten salt that is heated to the desired heat treat temperature. The number of degrees, determined from the most recent calibration that must be added to, or subtracted from, the temperature reading of a sensor, or an instrument, or a combination thereof system to obtain true temperature.
Using the plane method, TUS sensors are located in a single plane perpendicular to furnace conveyance direction such that passing the plane through the furnace measures the entire work zone volume 2750c the zones to be tested.
The SAT sensor may be inserted temporarily for the test or may be a resident test sensor, subject to the limitations of 3. Survey with 3 to 5 sensors No failures? Nonexpendable load thermocouples may be used to control temperature, subject to the limitations of 3. In the context of this document, bimonthly is equal to once every two months. Statement of acceptance or rejection?