European Partnership on Metrology · 25RPT03
Advanced digital infrastructure for harmonised temperature metrology
D4Temp builds an open, machine-readable, and decentralised infrastructure for temperature measurement and dissemination — connecting Digital Calibration Certificates, the digital SI, and self-sovereign identity across 17 European institutes.
Project code
25RPT03
Duration
36 months
Start date
June 2026
End date
May 2029
Coordinator
TÜBİTAK
Partners
17 across 14 countries
About the project
A shared digital ecosystem for temperature metrology
D4Temp supports the EU's aim to be a global leader in the digital transformation of metrology by removing fragmentation and lowering the barriers to digital calibration.
Temperature is the most widely measured parameter in industry — yet calibration workflows across Europe remain fragmented, mostly manual, and incompatible across systems. Digitising these workflows can save roughly 10–15 minutes per certificate and is projected to save the EU over €6.5 million annually, with direct benefits to industry, healthcare, and the wider metrology community.
Many National Metrology Institutes (NMIs) and Designated Institutes (DIs) — particularly emerging ones — lack the resources to build the digital infrastructure this transformation demands. Digital Calibration Certificate (DCC) capabilities are fragmented and only partially available, and cross-border trust in metrology data has not yet been built on modern, decentralised foundations.
D4Temp delivers a shared, open-source digital ecosystem for temperature metrology: harmonised data formats and APIs, reusable software libraries, validated end-to-end workflows producing DCCs in at least four participating institutes, and a decentralised trust layer based on the European Blockchain Services Infrastructure (EBSI) — the first such application in metrology. Outputs are released openly on GitHub and the project website to foster smart specialisation and close the digital gap across European NMIs.
What D4Temp delivers
Key outcomes
€6.5M+
Annual EU savings
Projected annual benefit from DCC adoption across European calibration laboratories.
10–15 min
Saved per certificate
Automation removes manual steps end-to-end, with up to ~30 % shorter calibration cycles overall.
Open-source
Shared libraries & data
Repository of reusable libraries, database templates, and BPMN workflows — published on GitHub.
First EBSI
DCC trust layer in metrology
Decentralised, eIDAS-aligned verification of Digital Calibration Certificates across borders.
Five project objectives
- 1
Map the landscape — standards, practices, and tools for temperature digitalisation; guidance on integrating the digital SI and DCCs. (WP1)
- 2
Define common data formats and APIs, plus shared software libraries for direct machine-to-machine interpretation. (WP2)
- 3
Implement automated end-to-end workflows from measurement to DCC in at least four participating institutes. (WP3)
- 4
Build a decentralised architecture for data immutability and self-sovereign identities, in line with eIDAS. (WP4)
- 5
Drive uptake with NMIs/DIs, calibration laboratories, instrument manufacturers, regulators, and EURAMET committees (TC-T, TC-IM, EMNs). (WP5)
Project structure
Six work packages
Creating a common basis for the successful implementation of digitalisation tools
WP1 identifies and gathers the standards, practices, resources, and developments relevant to digitalisation in temperature metrology. The findings are consolidated into an implementation plan tailored to NMI/DI structures and disseminated through learning tools and platforms, building a shared knowledge base across the consortium.
Learn moreWorkflow definition and library development
WP2 establishes the foundation for sharing software solutions across NMIs/DIs — harmonising processes and enabling smart specialisation. It identifies in-scope resources, defines a common database structure, and populates a shared repository with libraries for temperature-related software, designed for ISO 17025, DCC, and FAIR compliance.
Learn moreAutomated digital workflows for temperature calibration
WP3 develops and implements end-to-end automated workflows for digital temperature calibration. It defines harmonised data types and exchange formats aligned with FAIR, Digital SI, and DCC principles; then maps workflows to libraries from WP2 and implements automated digital workflows for contact and radiation thermometer calibration — tested with blackbox methods and producing harmonised DCCs.
Learn moreDecentralised architecture for secure and interoperable exchange of DCCs
WP4 develops an EBSI-based decentralised architecture for data immutability and self-sovereign identities — the first application of EBSI in metrology. It integrates this trust layer with the project's digital workflows and DCCs, enabling universally accepted, verifiable calibration certificates across Europe in line with FAIR principles, Digital SI, and the eIDAS ecosystem.
Learn moreCreating impact
WP5 secures the long-term uptake and impact of the project — through dissemination and communication aimed at the metrology community, industry, regulators, and the wider public, and through exploitation activities that handle IP, licensing, and uptake in line with the Grant Agreement and Consortium Agreement.
Learn moreManagement and coordination
WP6 handles the day-to-day management, coordination, and reporting that keep the consortium aligned — covering financial and administrative coordination, periodic project meetings, and formal reporting in line with EURAMET requirements.
Learn moreNews & events
Stay informed as the project evolves
Follow project deliverables, news, events, and publications. Consortium members can access the dedicated working space for internal coordination.
The project consortium brings together a wide range of well-established European NMIs and DIs, four universities and one SME industrial participant with dedicated expertise in the field of temperature metrology and digital activities. The consortium comprises 12 internal, 4 external and 1 unfunded beneficiary from 14 countries. The consortium participants have a strong relationship to their industrial participants and the end-user community (accreditation bodies, accredited laboratories and metrology instrumentation manufacturers), which ensures high impact of the project to many target end user groups.