| Edition | Status | Key Features | | :--- | :--- | :--- | | ASME PTC 19.1-2018 (R2024) | Current | Latest edition; reaffirmed in 2024; includes simplified calibration analysis and updated handling of error correlation. | | ASME PTC 19.1-2013 | Superseded | Introduced new examples and a more comprehensive treatment of regression uncertainty. | | ASME PTC 19.1-2005 | Superseded | Major revision that made the standard easier to use for practicing engineers. | | ASME PTC 19.1-1998 | Superseded | Historical edition that focused on errors from both random and systematic sources. | | ANSI/ASME PTC 19.1-1985 | Historical | Early edition restricted to time-independent measured variables. |
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Understanding ASME PTC 19.1: The Gold Standard for Test Uncertainty
The PTC 19.1 standard provides the technical framework for distinguishing between two types of uncertainty: 1. Systematic Uncertainties (Bias) | Edition | Status | Key Features |
ASME PTC 19.1 is the American Society of Mechanical Engineers' standard for Test Uncertainty
If you search for a free PDF, you will typically find: | | ASME PTC 19
This methodology ensures that when a manufacturer guarantees a piece of equipment, both the buyer and the seller agree on how close the test results need to be to the guarantee point.
Formula from PDF: [ b_r = \sqrt\sum_i=1^N \theta_i^2 b_i^2 ]