Comparisons

Comparisons List

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GULFMET.RI.S-K2 Consultative Committee for Ionizing Radiation
cs-137 air kerma and N-series based on ISO 4037:2019
  Jan-2022 - Dec-2022
Section I (x and gamma rays, electrons)
Micro Gy/nC
Schedule
In Progress
Key Comparison
GULFMET.RI.S-S1 Consultative Committee for Ionizing Radiation
Supplementary Comparison for Diagnostic Radiology in Air Kerma for X-ray RQR and RQA Beam Qualities
  Feb-2022 - Dec-2022
Section I (x and gamma rays, electrons)
Air Kerma Calibration Coefficient
Schedule
In Progress
Supplementary Comparison
GULFMET.RI.S-S2 Consultative Committee for Ionizing Radiation
GULFMET.RI(I)-S1: Supplementary Comparison of Air Kerma Standards from Radiation Protection level Cs-137 and ISO 4037 Narrow Beam X-ray Series in Range 40 kV to 300 kV
  May-2022 - May-2023
Section I (x and gamma rays, electrons)
Air Kerma Calibration Coefficient
Schedule
In Progress
Supplementary Comparison
GULFMET.PR-K4 Consultative Committee for Photometry and Radiometry
Comparison on Luminous Flux
  Feb-2022 - Nov-2022
Photometry
The luminous flux of a lamp
Schedule
In Progress
Key Comparison
GULFMET.TF-S1 Consultative Committee for Acoustics, Ultrasound and Vibration
Time difference between two pulses
  Jan-2017 - May-2017
Time
Time interval: 2 ns, 50 ns, 0.15 μs, 0.72 μs, 65 μs, 0.83 ms, 40 ms
Approved
Supplementary Comparison
GULFMET.T-S3 Consultative Committee for Thermometry
Platinum Resistance Thermometer Calibration from -70 oC to 250 oC
  Jan-2019 - Feb-2020
Industrial thermometry
Electrical resistance at a set of temperatures Temperature: -70 oC, -35 oC, 0.01 oC, 50 oC, 100 oC, 200 oC and 250 oC
Measurement
In Progress
Supplementary Comparison
GULFMET.T-S1 Consultative Committee for Thermometry
Comparison of humidity standards
  Feb-2017 - Mar-2018
Humidity
Relative humidity: 11 %rh, 30 %rh, 50 %rh, 70 %rh and 95 %rh
Draft A
In Progress
Supplementary Comparison
GULFMET.T-K9 Consultative Committee for Thermometry
Realizations of the ITS-90 from 234.3 K to 692.7 K
  Jan-2017 - May-2017
Standard Platinum Resistance Thermometers
Temperature: from the triple point of Hg (234.3 K) to the freezing point of Zn (692.7 K)
Measurement
In Progress
Key Comparison
GULFMET.L-S2 Consultative Committee for Length
Calibration of gauge blocks by interferometry
  Feb-2017 - May-2017
Dimensional Metrology
Central length from 2 mm to 600 mm
Approved
Supplementary Comparison
GULFMET.L-S1 Consultative Committee for Length
Calibration of gauge blocks by mechanical comparison
  May-2017 - Feb-2018
Dimensional Metrology
Central length deviation
Measurement
In Progress
Supplementary Comparison