How Do Venturi Meters and Filter Pumps Work?

[Cruiser]

hello every one i don't know if this is really the correct place for posting this question but here it goes! Can somebody tell me how the venturi metre and the filter pump work?

thanx in advance!

 

[Danger]

Welcome to PF, Cruiser. I can't speak for the others, but I personally would need a lot more information in the question. To start with, do you mean a venturi meter? The term metre refers to a unit of linear measurement. If so, would this be a vacuum gauge?
And the term 'filter pump' means nothing to me. Clarification is needed (by me, but others might know what you're asking about already). To me, a pump and a filter are separate entities.

 

[jasc15]

Is this a pressure meter, or a flow meter?? mass flow meters use a pressure differential to measure flow rate, and using bernoulli's eq you can easily determine the flow rate. essentially a pressure gage and a flow gage measure the same parameter (pressure), but the flow reading is an indirect measurement.