I know that this is an old thread, but I hope that there is someone how have built this unit and used it.
Have it been useful with the digits of the pressure change during the last ½ hour?
Is there more use of the 1-hour digit?
Is there any use at all of the digits? Do not the graph tells enough?
Have you ever used the graph for 24 ore more hours?
for pressure drop is fixed to 140 Pa/h. Hade it been better if it was adjustable?
My questions are because I am about to built a barograph without the graph and only show some figures. But what figures?