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how does a petrol pump work

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abhinaysurya | 21:01 Sun 02nd Sep 2012 | How it Works
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how will the meter calculate the flow in litres
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To answer one or both posts, the pump is calibrated to measure the amount of fuel it dispenses.
A petrol pump pumps petrol. A petrol meter meters petrol. An old fashioned analogue petrol meter does not usually involve any calculations, whereas a digital one does. What exactly do you want to know? If you phrase your question carefully you will probably get the answer you want. I am not being difficult, I just don't want to waste my time giving the wrong answer ie. one that you don't want.
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actually what i want to know is the process and mechanism involved in calculating the volume filled into the fuel tank in liters and in price. can anyone help me in this regard?
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thanq 4 ur answer @HowardKennitby but i referred dat already, i want to know additional information about dat along with flow sensors used in this
Flow sensors usually work by having a vane that rotates more or less in proportion to the rate of flow of the liquid that passes it. The vane is in a flow chamber has a small magnet attached to it that passes a coil or other sensor on the outside of the flow chamber. Every time the magnet passes the sensor it generate an electrical pulse. The pulses are counted electronically and calibration adjustments made to correct the volume reading.
^

I agree. As far as I know the sensor is an axial flow vane coupled to a tachometer; probably some sort of Hall effect device which feeds into a computer and calculates the charge from volume times price.
Or according the the Wikipedia article (which I'd have no reason to doubt in this instance.) the flow metering is done by a four stroke piston meter (i.e. the pump itself)
http://www.jiasongmachine.com/blog/page/3/
dammit, beaten by wiki again..grrrr.
Chuck we are tryng to answer this question without referring to wikipedia. If the OP wanted answers from wikipedia surely he/she would have gone there first? :-)
Why?
jomifl

why not refer to wiki, that's what it's for?
I'm sure the OP, if he'd thought about it, could/should just have gone straight to Google/wiki
-- answer removed --
Mass, another of my failed attempts at self mockery. Of course I should have referred to Wikipedia, I don't if I think I know the answer, but I didn't.
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see friends, i wanted to know how it is made or detail working of it i.e., flow meter involved in it
I thought dat dat Wikipedia link covered dat.
I'm not sure what specifically you are looking for.
Are you looking to make one for a course you are doing?
Question Author
yeah i want to make it and modify it. dats my project about, so any please help me @factor30

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