Ergonomics of the thermal environment - Instruments for measuring and monitoring physical quantities (ISO 7726:2025)

This document specifies the performance requirements and calibration methods for instruments used to measure and monitor physical parameters within the microclimate of work environments. It addresses key quantities such as air temperature, mean radiant temperature, air velocity, and humidity, which are critical for assessing thermal conditions in occupational settings. The content defines the accuracy, stability, and response time necessary for various sensors and measuring devices to ensure reliable data collection. It provides guidance on the design, operation, and maintenance of these instruments to support consistent evaluation of environmental factors affecting worker comfort and health. The scope covers devices applicable to indoor and outdoor workplaces, ensuring compatibility with international measurement protocols. By establishing uniform technical criteria, this standard facilitates the exchange of information regarding environmental data across different regions and industries. It serves as a technical reference for manufacturers, testing laboratories, and safety professionals involved in environmental monitoring and assessment procedures.