T/SXICS 005-2023 Active

Scope: This document specifies the general requirements, metrological characteristics, calibration conditions, calibration items and methods, calibration result expression, and calibration intervals for constant temperature and humidity weighing systems. This specification applies to the calibration of systems used for weighing filter membranes, filter cartridges, and low-concentration head samples under constant temperature and humidity conditions, with a temperature range of (20 ± 1) °C and a relative humidity of (50 ± 5)%; Main technical contents: 1 Scope 2 Normative reference documents 3 Terms and definitions 4 Overview 5 General requirements 6 Metrological characteristics 7.1 Environmental conditions 7.2 Measurement standards and other equipment 8 Calibration items and methods 8.1 Calibration items 8.2 Calibration methods 9 Calibration result expression 10 Calibration intervals Appendix A (informative) Example of uncertainty evaluation for temperature and relative humidity deviation measurement results of constant temperature and humidity weighing systems Appendix B (informative) Example of uncertainty evaluation for weighing indication error measurement results of constant temperature and humidity weighing systems Appendix C (informative) Internal format of calibration certificates