Yes - Control panel - data logger - I think that is to be used for the Chinese WH1081 as well.
Do a search through this thread…
http://discourse.weather-watch.com/t/32479
I think you have to have checked Clear the datalogger history which means it does it every 6 hrs while both WD and WH1081 are running and this stops the overload on the Console History log file causing spikes in the data.
Cheers
Graeme