Objective
The voltage and current units in a.c. are related to d.c. units by means of thermal converters.
In the past BCR programme an intercomparison was made of the calibration of high frequency voltage by means of ac-dc thermal converters. This involved seven metrology laboratories in the Member States. The main reason for this is the considerable requirements of industry for a wide variety of applications where instruments of very high accuracy are used (current sources, multimeters,etc). A large number of industry laboratories are also accredited for carrying out such measurements. The field of electric current was not covered by this intercomparison and it is felt by the metrology laboratories of the Member States that there is a need to ensure that there is sufficient agreement among themselves. This is of particular importance for the future to facilitate mutual acceptance of calibration laboratories.
The project consists of an intercomparison of the calibrations of thermal ac-dc current transfer devices for currents ranging from 10 mA to 20 A. The measurements are done on a set of five single junction thermal convectors with appropriate shunts for the different current ranges. Each device is to be calibrated at 10 or 20 Hz, 1 kHz, 20 kHz, 50 kHz and 100 kHz. In the case of 20 A the maximum frequency is limited to 5 kHz.
RESULTS
The project established a very good agreement among the participating metrology laboratories in the two 10 mA to 20 A and 10 Hz to 100 kHz ranges: at low current level (10 mA and 100 mA) the standard deviation was found between 15 to 30 1E-6, then it was observed to progressive degrees to 100 1E-6 over the full ranges of currents to 20 A and above.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
BRAUNSCHWEIG
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.