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Workshop: Knowledge Transfer on Sub-Chamber System
This upcoming project workshop, hosted by the University of Ljubljana, is a crucial component of Activity A4.1.4, focusing on the direct knowledge transfer regarding the developed sub-chamber system and air […]
PROJECT IMPLEMENTATION
A2TM (Advancement of air temperature metrology capabilities) will implement a model reference weather station for meteorological and climatological data.
Its goals are to develop methods and guidelines to evaluate instrumental and environmental components of uncertainty in meterorological data.
It is structured in 2 technical work packages (WP), the Impact WP and Management WP.
WP 1
TECHNICAL
MOBILE SUBCHAMBER SYSTEM DEVELOPMENT
The aim of this work package is to design and build a mobile subchamber system which can be used with typical climatic chambers and laboratory setups in the range of 40 °C to 80 °C with a target reference uncertainty of 15 mK. The process of development will include the initial testing and characterisation of the subchamber system together with the measurements of dominant influential factors on the sensors that will be subject of measurement within the subchamber system. All of the gathered data will be used for further optimisation of the system in order to achieve the best possible measurement uncertainty. The work package is broken down into three tasks.
Task 1.1 – to design and model a mobile sub-chamber system for air temperature measurements in climatic and environmental chambers.
Task 1.2 – to construct the sub-chamber system based on the agreed design that has been determined in Task 1.1.
Task 1.3 – to characterise the initially designed sub-chamber system.
WP 2
TECHNICAL
DEVELOPMENT OF MEASUREMENT AND CALIBRATION PROCEDURES IN AIR
The aim of this work package is to develop a measurement and calibration procedure which enables characterisation of the devices under test (DUTs) and reflects the metrological performance of the developed mobile subchamber system for the measurement of air temperature primarily by contact thermometry. The work package is broken down into two tasks.
Task 2.1 – to determine the most common air temperature measurement and calibration techniques used in laboratories, both commercially and within EURAMET.
Task 2.2 – to develop a measurement and calibration procedure custom tailored for the designed and constructed subchamber system.
WP 3
TECHNICAL
INTERLABORATORY COMPARISON MAKING USE OF THE DEVELOPED PROCEDURE TOGETHER WITH THE MOBILE SUBCHAMBER SYSTEM
The aim of this work package is to validate the subchamber design and test its robustness across different laboratories. This will be accomplished via an interlaboratory comparison using the developed procedure along with the mobile subchamber system. The interlaboratory comparison (ILC) will test the results obtained from the characterisation of the subchamber and evaluate the suitability of the measurement procedure. The ILC will also allow identifying and analysing any potential disparities between laboratories. The results will provide valuable insights into the capabilities of leading national metrology institutes in air temperature measurements. The work package is broken down into three tasks.
Task 3.1 – to develop the protocol that will be followed by the participants in the interlaboratory comparison.
Task 3.2 – to perform all the measurements determined in the created protocol from Task 3.1.
Task 3.3 – to evaluate the ILC based on the participants in the inter laboratory comparison and assess the suitability of the developed method and the design of the sub-chamber for measuring air temperatures within the project’s specified uncertainty limits.
WP 4
TECHNICAL
KNOWLEDGE TRANSFER IN THE FIELD OF AIR TEMPERATURE MEASUREMENTS AND CALIBRATION
The aim of this work package is to transfer knowledge in the field of air temperature measurements and calibration within the consortium. This will create a common base for further development in research capabilities as well as measurement and calibration techniques of atmospheric air temperature will be developed in this work package. The work package is broken down into two tasks.
Task 4.1 – to create training material for the consortium and interested stakeholders outside the consortium on how to use the measurement chamber
Task 4.2 – to exchange researchers between the consortium where handson training on the developed subchamber will be carried out.
PROJECT RESULTS
Objective 1
“To design and build a mobile and easy to set–up subchamber system for use with commercially available climatic chambers and laboratory setups. This system will be able to control all the key influential parameters (temperature distribution, radiation, irradiation of the device under test (DUT), humidity, pressure, wind speed, and self-heating of the sensors) in the temperature range of 40 °C to 80 °C with a target reference uncertainty of 15 mK.“
Objective 2
“To develop a calibration procedure to characterise air temperature of the devices under test (DUTs) and reflect the metrological performance (e.g., temperature range from of 40 °C to 80 °C with a target reference uncertainty of 15 mK) of the developed mobile subchamber system developed in objective 1 using contact thermometry. This procedure will include determination of i) key influential parameters (temperature distribution, radiation, irradiation of the DUT, humidity, pressure, wind speed, and self-heating of the sensors) together with their quantification, ii) dynamic behaviour of sensors, iii) uncertainty and iv) their correlations, and a methodology on how to perform interlaboratory comparison within the developed setup“
Objective 3
“To carry out an interlaboratory comparison using the procedure developed from Objective 2 together with the mobile subchamber system from Objective 1 and at least 5 DUTs. When carrying out the comparison further characterisation of the system in different laboratory setups and conditions as well as a basis for future comparisons in terms of hardware and procedures that will improve the currently used approaches will be considered.“
Objective 4
“To transfer knowledge in the field of air temperature measurements and calibration within the consortium to enable a common base for further development in research capabilities as well as measurement and calibration techniques of atmospheric air temperature. This will include the development of a good practice guide on air temperature measurement and calibration.“
Objective 5
“To facilitate the take up and longterm use of the air temperature measurement capabilities, technology, and infrastructure developed in the project by the measurement supply chain (including NMIs/DIs, calibration and testing laboratories), and end users (such as industry, instrument manufacturers, and regulators). The consortium will discuss the approach internally and with other EURAMET NMIs/DIs, for instance through EURAMET TCThermometry (T) and the EMN for Climate and Ocean Observation and EMN for Energy Gases, to ensure a coordinated and optimised strategy for developing traceability in this field across Europe.“
THE CONSORTIUM
