23 page 59, During calibration, the anemometer Check for quality paragraph output signal be examined to assessment of the 9, line 1 ensure that it is not subjected to anemometer interference or noise. output signal. Clause F.4: Calibration procedure 24 page 59, The anemometer shall run in for Check for details paragraph about 5 min before the calibration of operational 10, line 1 procedure begins in order to avoid procedures the effect that large temperature followed during variations may have on the the anemometer mechanical frication of the calibration (test anemometer bearings. Calibration log) shall be performed under both Check for the rising and falling wind speed in the range of wind range of 4 m/s to 16 m/s at a speed in which the calibration interval of 1 m/s or less. calibration was performed and the calibration interval within the defined range. 25 page 60, The sampling frequency shall be 1 Check for details paragraph1, Hz and the sampling interval at of the sampling line 1 least 30 s. This time shall be frequency and increased when low resolution sampling interval. anemometers are calibrated. Check for resolution details of the anemometer which will be calibrated. 26 page 60, Before collecting data at each wind Check for details paragraph1, speed, adequate time shall be of operational line 4 allowed for stable flow conditions to procedures become established. followed during the anemometer calibration (test log) 27 page 60, Air density shall be calculated on Check for records ρ paragraph the basis of the mean wind tunnel of measured air 2, line 1 air temperature T, relative humidity temperature, and barometric pressure B using pressure and φ equation (F.1). relative humidity. Check for estimation of air density at the time of calibration. 28 page 60, If no blockage correction for details factor of is paragraph calculated, then estimation about 1/4 of of the 4, line 2 blockage ratio shall blockage be used for the uncertainty calculation correction for factor. closed
23 page 59, paragraph 9, line 1 During calibration, the anemometer output signal be examined to ensure that it is not subjected to interference or noise. Check for quality assessment of the anemometer output signal. Clause F.4: Calibration procedure 24 page 59, paragraph 10, line 1 The anemometer shall run in for about 5 min before the calibration procedure begins in order to avoid the effect that large temperature variations may have on the mechanical frication of the anemometer bearings. Calibration shall be performed under both rising and falling wind speed in the range of 4 m/s to 16 m/s at a calibration interval of 1 m/s or less. Check for details of operational procedures followed during the anemometer calibration (test log) Check for the range of wind speed in which the calibration was performed and the calibration interval within the defined range. 25 page 60, paragraph1, line 1 The sampling frequency shall be 1 Hz and the sampling interval at least 30 s. This time shall be increased when low resolution anemometers are calibrated. Check for details of the sampling frequency and sampling interval. Check for resolution details of the anemometer which will be calibrated. 26 page 60, paragraph1, line 4 Before collecting data at each wind speed, adequate time shall be allowed for stable flow conditions to become established. Check for details of operational procedures followed during the anemometer calibration (test log) 27 page 60, paragraph 2, line 1 Air density ρ shall be calculated on the basis of the mean wind tunnel air temperature T, relative humidity φ and barometric pressure B using equation (F.1). Check for records of measured air temperature, pressure and relative humidity. Check for estimation of air density at the time of calibration. 28 page 60, paragraph 4, line 2 If no blockage correction factor is calculated, then about 1/4 of the blockage ratio shall be used for the uncertainty calculation for closed for details of estimation of blockage correction factor.
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