Good practice definitions for the DCC on temperature and humidity quantities

A digital calibration certificate (DCC) contains all metrological and administrative information in a fully machine-readable form. In order to increase the inter-operability of DCCs, harmonization needs to be established, especially within the communities of specific measurement quantities. A DCC working group from the technical committee for temperature and humidity quantities within the German Calibration Service (DKD) has started to compile good practice definitions for the storage of process and quantity specific information in DCCs. Many of these implementations rely on refType-attributes that are provided to associate specific meanings to particular information in the DCC architecture. The meanings of some distinguished quantity-specific refTypes are described in this work and their usage is highlighted on the two examples of the temperature scale and the calibration medium used. These digitization efforts will allow to automate quality management and metrological traceability in laboratories and industrial measurement technology.