CCPR-K4, EURAMET.PR-K4, SIM.PR-K4 and COOMET.PR-K4.1
MEASURAND: Luminous flux
The individual measurements, xi, of the participating laboratories take the form of ratios which depend on the reference used at the pilot laboratory, the PTB. This is cancelled out by normalization using the key comparison reference value, xR. This procedure leads to normalized individual measurements: xi / xR.
- Key comparison EURAMET.PR-K4
The participants' measurements are given in Annex B of the EURAMET.PR-K4 Final Report.
The ratio of the measurement results of the laboratories participating in SIM.PR-K4 to the measurement results obtained at the pilot laboratory, the CENAM, are given in table 15 of the SIM.PR-K4 Final Report.
- Key comparison COOMET.PR-K4.1
The measurement results of the laboratories participating in COOMET.PR-K4.1 are given in table 7 of the COOMET.PR-K4.1 Final Report.