I just tested whether entering and exiting a thread would continue to push the views up but it doesn't. I don't know how it works without being logged in but at least being logged in and exiting and reentering doesn't continue to up the view count. I think it would require a new post in the thread until it allows the same member to count towards another view count.
As far as I know the view count will be renewed if you enter a new topic, leave the new topic and enter the topic again you viewed at first. You can try it with random topics from Meta page 4 or older, I just tried it myself again if it's still calculated like that.
1. enter first topic => view count of the topic will increase +1
2. go back to the meta board overview
3. enter another topic => view count of this topic will increase +1
4. go back to the meta board overview
5. enter first topic again => view count of the first topic will increase again +1 (total +2 since step 1)
When you refresh the meta overview, the updated view count will also be shown in the topic overview.