Overview
CEN ISO/TS 15530-1:2013 - Geometrical product specifications (GPS) - Coordinate measuring machines (CMM): Technique for determining the uncertainty of measurement - Part 1: Overview and metrological characteristics.
This Technical Specification gives a high-level framework for estimating task-specific measurement uncertainty when using CMMs. It describes CMM metrological characteristics, identifies sources of uncertainty for particular measurement tasks, and explains the relationship between the ISO 10360 acceptance tests and the ISO 15530 series of techniques.
Key topics
- Metrological characteristics of CMMs: Definitions and identification of the CMM properties that influence measurement results and calibration needs.
- Task-specific uncertainty: Concept and scope - includes CMM performance, probing system, sampling strategy, fixturing, workpiece orientation, contamination and thermal/environmental effects.
- Sources of uncertainty: Instrumentation factors, measurement-plan factors and extrinsic factors (environment, operator, part conditions).
- Techniques to determine uncertainty components:
- Sensitivity analysis (qualitative/quantitative assessment of influential factors).
- Use of calibrated workpieces or standards - referenced in ISO 15530-3.
- Computer simulation methods - referenced in ISO/TS 15530-4.
- GUM and GPS alignment: Methods are consistent with ISO/IEC Guide 98-3 (GUM) and ISO 14253-2 guidance for estimating uncertainty; the default coverage factor k = 2 (≈95% confidence) is referenced.
- Supporting material: Informative annexes cover the relation to ISO 10360, sources of error/uncertainty, and GPS matrix relationships.
Applications
- Producing robust, task-specific uncertainty budgets for part inspection and first-article verification.
- Defining measurement plans and sampling strategies that account for CMM characteristics.
- Supporting calibration decisions and interpretation of CMM acceptance test results (ISO 10360) for real workpiece measurements.
- Justifying conformity decisions under GPS decision rules (ISO 14253 series) with documented uncertainty estimates.
- Applying computer simulation or calibrated artifacts to quantify measurement uncertainty for complex geometries.
Who should use this standard
- Metrologists and calibration laboratories
- Quality and inspection engineers using CMMs
- CMM manufacturers and service providers
- Manufacturing engineers defining measurement plans and acceptance criteria
- Organisations implementing GPS-compliant measurement and conformity assessment
Related standards
- ISO 10360 series (CMM acceptance and reverification tests)
- ISO/IEC Guide 98‑3 (GUM) - expression of measurement uncertainty
- ISO 14253‑2 - guidance for uncertainty estimation in GPS measurement
- ISO 15530-3 (calibrated workpieces) and ISO/TS 15530-4 (simulation methods)
Keywords: CEN ISO/TS 15530-1:2013, ISO 15530, measurement uncertainty, CMM, coordinate measuring machines, GPS, ISO 10360, GUM, task-specific uncertainty.