Scaling from voltage to engineering units

The import filter for Graphtec recorder files of FlexPro 6.0.31 does not support automatic conversion to engineering units. We are already staying in concat with Graphtec and will support this feature soon.

Meanwhile, you can scale your data in an easy way. Create a formula named “_Scaled” with the following content:
[code]
Arguments data
Dim x1, x2, y1, y2, m, b
x1 = 1
x2 = 5
y1 = 0
y2 = 20
m = (y2 – y1) / (x2 – x1)
b = y1 – m * x1
m * data + b
[/code]
You should set the units of your formula on the [b]General[/b] tab of the [b]Properties[/b] sheet to “mA”.

You can now scale your data sets by selecting them in the FlexPro Explorer and simply dragging and dropping them onto the name of the above formula. FlexPro then creates a new object for each dataset which returns the scaled data and whose unit is set to “mA”.

support@weisang.com

Our Department has just got the new version of Flexpro 6.0.33. We use it exclusively with a Graphtec data logger. The Graphtec software saves data into *.gdb files, containing the name and the engineering units of each channel. We have remarked that Flexpro imports only data in volt, without the unit and the name of the channels, although all these information are in the *.gdb file. We use daily lots of sensors calibrated in the Graphtec software. And it?s sad that Flexpro doesn?t let us the choice between importing data in volt or data converted to engineering units, with the name of each channel. For example we could have the choice to get data as ? CH1 V? or ?Speed m/s? with data converted to m/s. We have already tried many ways to convert these units using *.txt or *.dat files, but we haven?t found a quick and simple solution to keep all these precious information in Flexpro. We have also tried the solution with a ?_scaled? function, but it?s really not convenient enough when several people use many kinds of sensors every day. It would be very helpful if you could update this filter in order to convert data with engineering units, because I waste lots of time just trying to keep these units.
Thanks for your help.

Pascal Lagorgette