Scale factor and offset

[TATIANA]

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The Load Defaults button can be used to load a default scale factor and offset for the type of sensor shown in the Sensor Type field , but?are applied scale factor and offset type  in instantaneous values (1 second) sampling or in average data over a 10-minute period?

Some values download in the SymphoniePLUS3 logger and the Symphonie Data Retriever (SDR) software are less than default offset values (for example, anemometer value: 0.02)

Thanks,

 

[David Carlson]

All recorded data (as in on the SD card) are raw, unscaled values.

This means that changes can be made to the scaling without affecting the recorded data.

The real-time view of data on the loggers screen is meant as a reference. You may find slight discrepancies in the displayed values on the order of 0.02 m/s.

I hope that helps,

Dave

[TATIANA]

Hello,

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Is applied transfer function to values of 1second to useful units of measure (m/s) or are all recorded data as Frequency values?

If transfer function is applied?.when the measured value is 0 (1second value)?is applied transfer function also?

Standard deviation of wind speed; which method do your logger use to calculate this?

Thanks,

 

[David Carlson]

1) All 1-second samples are recorded as pulse counts; these are averaged and stored as raw pulse count information every ten minutes

2) Our SD calculations for wind speed are pretty straight ahead. We're essentially doing a one-pass SD calculation.