Description of the project:

1.Motivation and objectives

Ever-increasing demand for precise rotational speed measurement from scientific research and industry application can be obviously seen in recent years worldwide. A typical example is high rotational speed centrifuge as a medical diagnostics facility in the field of biomedical engineering. For the rotational speed measurement, high performance digital tachometers are most widely used as working instruments for scientific research or industry application purposes.

However, in the metrology field of rotational speed, there is no formal comparison completed either at Consultative Committee (CC) level or Regional Metrology Organization Technical Committee (RMO TC) level, due to the fact that mechanical generator and optical simulator are both used for the tracebility of optical tachometers and the fact TCAUV and TCTF are both involved for the calibration of optical tachometers according to their respective methodology. 

In this project , vibration labs of NIM, NMC and NIMT from TCAUV and time&frequency labs of NML, KEBS and NIS from TCTF will work together. The former mainly works on mechanical generator while the latter on optical simulator. Labs from TCTF also assist in contacting and inviting other participants from industry, equipment manufacturers and universities to attend the special session on “Rotational speed metrology”.

In order to improve the global measurement service capacity of optical tachometers, this project aims at helding a pilot comparison including both mechanical generator and optical simulator as standard devices. Custermized sample will be developed as transfer artefact. We will host an international forum and a remote training course, and provide knowledge dissemination and training for NMIs in APMP who urgently need to establish this capability. So far, several APMP members are very interested in participating this project including NMC, NIMT, NML, KEBS and NIS.