Niko Home Control Energy - I have an NHC bus solution with a measuring module that measures my general consumption and I want to add a wireless bridge that reads from my digital meter.

In order to avoid the measurements from the digital meter and the measuring module being added together, you can use the NHC programming software to adjust the "measurement type" parameter to "sub-measurement" for this measuring module.
If the "measurement type" parameter is left at universal measurement, the measurement data will be added to the measurement data for the digital meter.

You may be able to use this measuring module to measure other circuits then too.