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Normaly pool pumps have only one speed " flat out" unless you have a two speed pump.
You can adjust the idle speed on your 1992 Honda 250, motorcycle with the fuel pump adjustment screw. Turning the adjustment screw will adjust the flow of fuel.
No but the pump runs only when air enters the Mass Air Flow meter. In other words the Mass Air Flow turns on the fuel pump.
best guess it is an METERED adjustable flow rate pump delivering 247 mL/min up to 2475 mL/min
THE SYMBOL FOR Flow Meter is : FI as Flow Indicator
The above is the symbol of flow meter.
One can recalibrate a flow meter by having a company or owning a flow meter supplier or using a flow meter lab. No matter what type of flow meter they need to be checked to see if they need to be recalibrated regularly.
rota meter
You can adjust your VW carburetor by using the adjustment screws. There is an adjustment screw to adjust the flow of fuel. There is an adjustment screw to adjust the flow of air.
I believe it depends on what kind of flow meter you are looking for. They can range from 19.99 and go up. The more expecive it gets the better the flow meter.
meter in: regulates the speed of the actuator by controling the amount of fluid entering in to the actuator. meter out: regulates the speed of the actuator by controling the amount of fluid leaving the actuator. bleed off: regulates the speed of the actuator by metering a part of the pump flow to the tank. Prof. Mahesh Chopade MIT College of Engineering, Pune
it principle denpend on what kind of flow meter. example, magnetic flow meter, it use magnetic force to measuring or coriolis flow meter which is use vibrated capilary tube as sensor. or more info you might watch on youtube.