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Click
Import selected
7.5.1
File size and download time
The time it takes to download data after a deployment depends on the data sampling
frequency, the duration of the deployment, the number of channels and whether STOX
mode has been active. The file size and download times are:
Expected file sizes:
•
4 sensor ch one temperature channel, sampling rate 1 Hz, STOX mode not
active: 2.3 MB/24 h
•
4 sensor ch one temperature channel, sampling rate 1 Hz, STOX mode
active: 3.7 MB/24 h
Expected download times:
•
2.5 min/MB = 0.4 MB/min
Number of data points
•
Sampling at 1 Hz for 24 hours => 86,400 lines in the file
Note: Consider both sampling frequency and duration of a deployment to obtain data files
that can be handled by your data processing software. As can be calculated from the above,
the download of data from 24 hours of logging, at 1 Hz with four channels with STOX
support, will last about 10 min.
7.6 Calibration
For calibration of the sensors the FDL Mini must be connected to a PC and the Logger
software must be running.
The calibration is only stored in the Logger file on the PC and not on the FDL Mini which will
only store raw data. After downloading a file from the FDL Mini data must be calibrated in
Logger, using an already stored calibration. This calibration may be made and stored before
or after the deployment. However, it is strongly recommended to calibrate the sensors
before deployment to make sure the sensors are working as they should. Furthermore, if a
sensor breaks during deployment it is not possible to calibrate afterwards. If calibration is
done before deployment, it will be possible to get calibrated data until the time when a
sensor breaks.
7.6.1
Calibration of the sensors
After setting the channel information as explained above, click
Start Experiment
and assign a
name to the file. Select the
Calibration
tab. The individual sensor tabs to the left of the
window show whether the sensors are calibrated or not. A red cross indicates that the
sensor has not been calibrated and a green tag indicates that the sensor has been
calibrated.
Detailed information about the calibration procedure is found in the SensorTrace Suite
Manual. For information on calibration of a specific sensor consult the individual sensor
manuals. The manuals are found here: (