Iswor Posted February 7, 2019 Report Share Posted February 7, 2019 Dear all, I have confusion regarding the scale factor in Symphonie Anemometer. Following is the sensor information I have got from my data logger : Sensor Information----- Channel # 1 Type 1 Description NRG #40 Anem. m/s Details Serial Number SN:50m 1 Height 50 m Scale Factor 0.758 Offset 0.44 Units m/s What is the use of scale factor during the data analysis? Can we use the retrieved data directly for further analysis like Weilbull Construction or do we need to use the scale factor ( multiply or divide the measured data ) before the further analysis? Waiting for reply. Link to comment Share on other sites More sharing options...
David Carlson Posted February 7, 2019 Report Share Posted February 7, 2019 It appears that you are working with exported data files from a SymphoniePLUS3 or older logger. The files the logger creates are in RWD format - a proprietary binary encoded file. The data in these files is stored as raw counts and pulses; unscaled. At the time of export, the data is scaled. it may be scaled per the logger settings (stored in the file) or scaled using settings in the Site file. The information in the header of the exported data, as you show in your original post, indicates how the sensor was scaled at the time of export. If you wish to change the scaling of the data in the export, the best approach is to: Change the scaling for the desired channels in the Site file Re-import the RWD files Re-export the data to TXT using the updated settings. More information can be found in the SymphoniePLUS3 manual, starting on page 96: https://www.nrgsystems.com/assets/resources/SymphoniePLUS3-Data-Logger-Manual.pdf Link to comment Share on other sites More sharing options...
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