Bob Higgins <[email protected]> wrote:
> Do you know the orientation of the flow meter? It is only possible to > have a pipe half full if the flow meter is mounted horizontally (a mistake > for use of this type of flow meter). > Umm . . . I don't follow what you mean. Do you mean the pipe should be vertical? I don't know what you mean by having the flow meter vertical. Like, sideways? It is a rotor smack in the middle of the pipe . . . so I don't get what you mean. The pipe was horizontal and the flow meter face plate is up. As far as I know. > If the flow meter was mounted horizontally, and the pipe was half full, > the turbine would turn at the speed of the water (same as if it were full) > - since a full pipe was presumed in the indication of rate, it would be in > error by the volumetric difference between the pipe full volume and the > pipe partly filled volume. > I believe the error can be complicated. It is not like: "the pipe is half full so the actual flow rate is half of what is indicated." A partially full pipe can produce a huge error. That is my impression reading about flow meters and using them myself, but I have no specific information on the extent of the error in Rossi's setup. (I think I.H. does have this information.) As you saw, I estimated it has to be at least 3. That seems plausible to me. - Jed
