Displacement errors of a transducer shall be measured. An incremental length transducer with measurement range of 60 mm with 10 nm resolution is used in the comparison. The measurement force of the transducer is generated by gravity and was not exactly determined prior to the comparison. The transducer is equipped with a digital display.
Displacement errors shall be measured in 10 measurement points distributed along the whole measurement range. Participating laboratories shall apply normal calibration procedures that are used for clients.
Progress Report 2022-05-20
The project was agreed at the EURAMET TC-L meeting in October 2020. Version 1 of the technical protocol was issued in December 2020 and sent to all potential participants for discussion. Final technical protocol (Version 5) was issued on 11 March 2021 (8 participants). Initial measurements started in March 2021 in the pilot laboratory MIRS/UM-FS/LTM.
At the EURAMET TC-L meeting in October 2021, VTT MIKES from Finland expressed a wish to join the project. BEV (Austria) and VSL (Netherlands) expressed a wish to repeat their measurements due to some technical issues. After getting confirmation from all participants, Version 5 of the (amended) technical protocol was issued. We have added VTT MIKES to the participants and the circulation scheme was updated.
Until now, all participants except VTT MIKES have performed the measurements. The transducer is in the pilot laboratory at the moment since it had to be repaired. It is expected to send it to VTT MIKES until the end of May, sothe final measurements will be performed in June 2022.