germ and temperature pipe sensors bug

And whats the bug in your oppinion? If there is nothing in the pipe, there is nothing to detect. Those sensors are not meant to detect if there is something in the pipe. 

you don't get it, if you on term sensor set 20 degree below, so they should detect some content, but if you get empty pipe, they will generate green signal after they had some content with this 20 degree below.

For me empty content should generate 0K for temperature and 0 for germs