SonTek/YSI Argonaut-XR Technical Manual - HydroScientific West

SonTek/YSI
5.5. Windows Software Support
SonTek Windows-based software offers an alternative to the DOS extraction programs for handling
the external pressure sensor calibration data.
5.5.1. Downloading Calibration File Using SonTermW
Starting with v2.0, SonTerm for Windows (SonTermW) provides an easy way to load the frequency
pressure sensor calibration file into the system processor. Simply establish communication
with the system in SonTermW, click the Load Druck Calibration icon, choose the appropriate
file, and the load process will be performed.
5.5.2. Specifying Calibration File When Using ViewHydra
When opening a data file (.adr) with ViewHydra, you must supply a sensor calibration file (.drk)
to convert pressure data to dbars. If no pressure calibration is provided, all pressure data will be
displayed in raw frequency counts. ViewHydra lets you save the calibration data in an associated
data file workspace, so the calibration data is loaded automatically the next time the data file is
opened.
After the data file is loaded, you can select the sensor offset from the processing menu to convert
the absolute pressure reading.
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1. Run DRUCK/PAROSFREQ in SonTermW and make note of the pressure reading with the system
in the air (say 10.025 dbar for this example).
2. In the Processing|Sensor Calibration Settings… menu, set Sensor Type to Ext Pressure, and
then enter a value of –10.025 (for this example) in the Offset field to convert pressure data
into strain gage data (relative to the atmosphere).
3. Now use the Processing|Recompute Burst Statistics File… option to propagate the changes
into the burst-averaged data.
4. When exiting the program, use the Save (Overwrite) Workspace option to store the calibration
and offset data. The program will now remember this information for this data set.
5.5.3. Using ViewADP with PCADP Data and Waves
Data collected by a standard ADP stores mean pressure data in dbars; no additional conversion is
needed. However, PC-ADP data and ADP wave series data (P-SERIES & PUV-Series) require
pressure calibration.
When opening a data file with ViewADP, click the Load ExtPres CalFile button to specify the
calibration file.
Notes:
1. If pressure calibration is not loaded, all pressure data will be displayed as raw frequencies.
2. If pressure calibration data is not loaded, wave data processing is disabled.
3. ViewADP will save the calibration data in the associated data file’s workspace. This allows
the calibration data to load automatically the next time the data file is opened.
Using Frequency Pressure Sensors with SonTek/YSI Systems (June 2001)