How many type of flow meter exist?
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Orifice is most commonly used  for differential press. type \nElse venturi,Pitot tube/Delta tube,flow nozzles as per req.\n\nif accuracy is req. then\nmagnetic flow meter or most precise mass flow meters are prefered today\n\nat least i prefer it in industry where I'm working
1046110
Theres a tool called a Handheld Anemometer, amazon has one inexpensive
252262
Intake\nCompression\nPower stroke\nExhaust
574365
i use to work in several water treament facilities. a flow meter is calibrated with the rising and lowering of the water level. the best flow meter utilizes a float inside a pipe that is slightly larger than the float.go to www.grainger.com. they have pictures of a few flow meters
584159
water consumption varies with the type of fixture
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http://home.btconnect.com/MalcolmBrown/entries/ULTRASONIC_BLOOD_FLOW_RATE_METER.html\n\nThey do measure the blood flow of feet for diabetics.\n\nFPM could mean a bunch of things from feet per minute to fluid particle model (a way of counting the speed of blood).
56978
water, water and more water
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Here are some Lab Apparatus \nhttp://library.advanced.org/11430/research/apparatus.htm\nhttp://www.charltonsci.co.uk/charlton_scientific_015.htm\n\nhere are all the Lab Apparatus (click on them to get info one them)\nhttp://en.wikipedia.org/wiki/Category:Laboratory_equipment
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1234 flow\n23456 lower\n45 we\n56 ER
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A device for passing measured amount of gas or compressed air under constant pressure through gas meters to test accuracy of meters.\n\nkindly check below websites also :)
823030
You could use a resistor in series for the voltmeter and a shunt resistor in parallel with the ammeter.  You can also use a signal amplifier to transform the input signal to one that is within the range of the meter.  If it is a panel type meter, do not forget to change the scale behind the meter.\n\nJeffM
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Your subject is somewhat vague, but I believe the web site below can help.\nEnter Valve into their search window. Several device manufacturers are mentioned.\nHope this helps.
770644
Looks like a venture meter with an agitator inside and connected to an air pressurized tank at the inlet and sort of a suction mechanism to suck air and obstruction out from the outlet.
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Gate valve, butterfly valve, ball valve, non- return valve, pressure reducing valve, there are many type however we can classify them into two categories, STOP VALVES & CHECK VALVES.\nDrawing symbols here is not possible, just do a web-search\nGo here to find some details:-\nhttp://en.wikipedia.org/wiki/Valves
218874
Your question is a little vague so I'll list a few applications. Aircraft instruments, piston and turbine engines, barometers, steam engines,
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cfm. Cubic feet per minute, a measure of air flow
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There are many, many types of weather instruments. A complete list would be very extensive, but here are a few instruments to investigate:\n\nAnemoscope, anemometer, hygrometer, barometer,rain gauge, thermometer, sling psychometer, radiosonde, rocketsonde, theodolite, weather satellites, doppler radar, various lightning instruments like time of arrival and magnetic direction sensors, lightning imaging sensor (space-based), electric field mills, Gerdien conductivity probes, pyranometer (actinometer), evaporimeter (atmometer), and so on.