6.0 Data Compensation

Note:

Multiple AquaVent files can be compensated at once.

Data Compensations, such as Manual Data Adjustments and Parameter Adjustments can be performed automatically using the software Data Wizard, or manually, by exporting data to an external spreadsheet program.

 

6.1 Data Wizard

Open the Data Wizard tab. The first step is to select your Data Compensation Path. The AquaVent will only have the Advanced option available.

The Advanced option allows you to perform Manual Data Adjustments and Parameter Adjustments.

solinst aquavent aquavent user guide aquavent data compensation vented datalogger data compensation compensating vented dataloggers compensating vented water level dataloggers solinst aquavent data compensation vented datalogger compensation vented datalogger data adjustments vented datalogger parameter adjustments image

Figure 6-1 Data Wizard

 

Note:

Manual Data Adjustment, and Parameter Adjustments are useful for correcting AquaVent data files to make data consistent across a project.

 

Manual Data Adjustment allows you to enter a manual water level measurement or reference point as a field zero, which all AquaVent water level readings can then be adjusted to. There is the option to convert readings to Depth to Water Level measurements (e.g. from the top of a well casing to water level), or Elevation of Water Level measurements (e.g. above sea level).

Parameter Adjustments allow you to change AquaVent data to different units of measurements, add an offset, or adjust density.

When you select Advanced compensation, the Data Compensation Options window will open.

solinst aquavent aquavent user guide aquavent data compensation vented datalogger data compensation compensating vented dataloggers compensating vented water level dataloggers solinst aquavent data compensation vented datalogger compensation vented datalogger data adjustments vented datalogger parameter adjustments image

Figure 6-2 Solinst AquaVent Data Compensation Options

First, you will select how you want your data displayed (Manual Data Adjustment):

Next, you will select Yes or No to performing any Parameter Adjustments on the data files (will not be active if you selected Parameter Adjustments Only).

Click Next, after you have selected all of your Data Compensation options.

In the next window, you will choose the AquaVent file(s) you would like to use in the compensation. Any files you have open in the Data Control tab will be listed.

Use the directory on the left of the window or click to open any other data files you would like to compensate. Ensure the files you want to compensate are highlighted in the list. Do this by clicking the file name. To de-select a file, click again. Select Next to continue.

solinst aquavent aquavent user guide aquavent data compensation vented datalogger data compensation compensating vented dataloggers compensating vented water level dataloggers solinst aquavent data compensation vented datalogger compensation vented datalogger data adjustments vented datalogger parameter adjustments image

Figure 6-3 Selecting Files for Compensating Solinst AquaVent

 

Note:

When adjusting Units, if you select apply to all, the same unit change will be applied to all of the files being compensated at that time.

If you have selected yes to Parameter Adjustments, or selected the Parameter Adjustments Only option, in the next window you will enter these. If you did not select to change any parameters, this window will not be shown.

solinst aquavent aquavent user guide aquavent data compensation vented datalogger data compensation compensating vented dataloggers compensating vented water level dataloggers solinst aquavent data compensation vented datalogger compensation vented datalogger data adjustments vented datalogger parameter adjustments image

Figure 6-4 Solinst AquaVent Parameter Adjustments

 

Note:

The date and time of measurement of the Field Zero must be recorded to complete the adjustment. The Field Zero must replace an actual reading the AquaVent file. I.e. take a manual measurement immediately after starting the AquaVent, and note that time.

Next, for each selected AquaVent file, you will enter the Field Zero(s) you would like to use to manually adjust your AquaVent data. (If you have selected Parameter Adjustments Only, this window will not be shown.)

For Depth to Water Level adjustments, enter a Field Zero (A). If the static water level is below your Field Zero measurement, the Field Zero is input as a positive value (e.g. a manual water level meter measurement taken from the top of a well casing. See Example 6.1). If the static water level is above your Field Zero, the Field Zero is input as a negative value (such as in an artesian condition).

The Time the Field Zero measurement was taken must replace an actual reading in the AquaVent file. This is selected from the drop-down menu showing all time stamps in the AquaVent file. Click 'Add' to apply the adjustment. If you need to change a Field Zero, click 'Update' after any edits.

solinst aquavent aquavent user guide aquavent data compensation vented datalogger data compensation compensating vented dataloggers compensating vented water level dataloggers solinst aquavent data compensation vented datalogger compensation vented datalogger data adjustments vented datalogger parameter adjustments image

Figure 6-5 Solinst AquaVent Manual Data Adjustment - Depth to Water Level

 

solinst aquavent aquavent user guide aquavent data compensation vented datalogger data compensation compensating vented dataloggers compensating vented water level dataloggers solinst aquavent data compensation vented datalogger compensation vented datalogger data adjustments vented datalogger parameter adjustments image

Example 6.1 Solinst AquaVent Depth to Water Level Adjustment

When using a manual depth to water measurement taken from the top of a well casing as a Field Zero, enter it as a positive value (e.g. 10 m). In your adjusted data file, your readings will increase in value as the water level decreases. This is because the depth to static water level from the top of the well casing is increasing. The adjusted readings will decrease in value as the static water level rises.

 

Original AquaVent Data (height of water above sensor) 8.75 m 8.50 m 8.75 m 9.5 m 9.75 m
Adjusted AquaVent Data (depth to water) (A) 10.0 m 10.25 m 10.0 m 9.25 m 9.0 m

 

For Elevation of Water Level adjustments, enter a Measuring Point Elevation (A) and a Field Zero (B) from that Measuring Point.

If the static water level is below your Measuring Point, the Field Zero is input as a positive value (e.g. if you are using a manual depth to water measurement as a Field Zero, from the top of a well casing as the Measuring Point).

If the static water level is above your Measuring Point, the Field Zero is input as a negative value (such as an artesian condition). The Measuring Point elevation may also be entered as a negative value.

 

Figure 6-6 Manual Data Adjustment - Elevation of Water

 

Note:

The date and time of measurement of the Field Zero must be recorded to complete the adjustment. The Field Zero must replace an actual reading the AquaVent file, i.e. take a manual measurement immediately after starting the AquaVent, and note that time.

The Time the Field Zero measurement was taken, must replace an actual reading in the AquaVent file, and is selected from the drop-down menu showing all time stamps in the AquaVent file. Click 'Add' to apply the adjustment. If you need to change a Field Zero, click 'Update' after any edits.

You can make multiple adjustments to one data file by selecting 'Add' again to enter another Field Zero. All readings after this Time, will be adjusted to this second measurement. You can add as many adjustments to one AquaVent data file as you would like (as long as it doesn't exceed the total number of readings in that file).

Select Next to complete the compensation.

Note:

All data files are saved to the default location: <C:\Program Files\Solinst\ Levelogger4_2\Data>. However, the default directory for saved files can be changed by clicking the Configuration menu at the top of the program window, selecting 'Application Settings' and inputting or navigating to a different folder destination.

The compensated data will automatically be saved in a new *.xle file. The default file name will be the <original AquaVent file name> with the word <compensated> added to the file name prefix. Alternatively, the user can rename the compensated file by saving it in the Data Control tab. Do not change or delete the file extension. All data files are saved to the default location:
<C:\Program Files\Solinst\Levelogger4_2\Data>.

The next window will show the results of the compensation. If the compensation was unsuccessful, there will be an explanation in the Reason column. You can still view the compensated file in the Data Control tab, by clicking 'Open' in the Action column. If the compensation is successful, select 'Open', to view the compensated data file in the Data Control tab.

Figure 6-7 Data Compensation Results

 

From the Data Control tab, you can view the data, save the compensated file with a new filename and/or export the data (see Section 5).

All the original AquaVent settings and the channel information effective during data collection are shown on the top left of the window. The bottom left sections of the window are used to display the compensation information.

Figure 6-8 Viewing Compensated Files in the Data Control Tab