ISO 14511:2019 PDF

Scope: This document gives guidelines for the specification, testing, inspection, installation, operation and calibration of thermal mass gas flowmeters for the metering of gases and gas mixtures. It is not applicable to measuring liquid mass flowrates using thermal mass flowmeters. This document is not applicable to hot wire and other hot film anemometers, also used in making point velocity measurements.

ISO 14511:2019 Referenced Document

IEC 61000-4 Electromagnetic compatibility (EMC) - Part 4-9: Testing and measurement techniques - Impulse magnetic field immunity test
ISO 4006 Measurement of fluid flow in closed conduits; vocabulary and symbols
ISO 7066-2 Assessment of uncertainty in the calibration and use of flow measurements devices; part 2: non-linear calibration relationships
ISO/IEC Guide 98-3 Uncertainty of measurement - Guide to the expression of uncertainty in measurement (GUM:1995). Extension to any number of output quantities

2019 ISO 14511:2019 Measurement of fluid flow in closed conduits — Thermal mass flowmeters
2001 ISO 14511:2001 Measurement of fluid flow in closed conduits - Thermal mass flowmeters