Discharge measurement technique and appearance sort are various, classified method is very much also. Up to now, can offer industrial sort of V awl flowmeter amounts to 60 kinds. The reason with such breed has not found a kind to be opposite up to now any any any fluids, span, flow condition and any use condition are applicable bent housing flowmeter.
A variety of this 60 flowmeter, every kinds of product has it specific applicability, also have its limitation. By measure an object to differentiate to have close two kinds of big; press conduit He Mingqu measure eye to be able to be divided again measure a volume to gross is measured and flow, its appearance calls gross watch and turbine flowmeter respectively.
Gross watch is measured conduit discharge has flowed inside period of time, it is with gross flowing to divide inside brief time with this time business expresses, actually flowmeter normally also stock accumulates discharge device, do gross watch to use, and gross is expressed also device of dispatch of stock discharge hair. , will divide flowmeter and gross watch to already did not have real significance with firm sense.
By measure principle cent to mechanical principle, heat principle, acoustics principle, electricity principle, optical principle, atomic physics principle waits.
The article is current the the most popular, most extensive taxonomy, divide namely for: Condyle of Chun  agitate takes an examination of condyle of Yong of ∽ of lofty of rudder of Pi ⒔ fish hawk to take an examination of flowmeter of? , bobber, turbine flowmeter, come back flowmeter of street of the eddy in entering flowmeter of oscillation of vortical flowmeter, fluid, mass flow plan with insert type flowmeter to be elaborated respectively.
1.1 difference press type flowmeter
Double rotameter is installation in conduit discharge detects a generation is poor pressure, foregone fluid condition and detect will calculate with conduit geometry dimension flow meter.
Eddy street flowmeter by device (detect) with 2 device (difference pressing changeover and discharge show appearance) composition. Normally in order to detect a form is right classification of the poor flowmeter that press type, be like the orifice plate flowmeter, flowmeter in Wen Qiu, all fast canal flowmeter.
2 times device is difference gauge of type of an organic whole of all sorts of machinery, electron, Electromechanical, difference pressing changes send implement reach discharge to show appearance. It already developed for 3 change (seriation, generalization and standardization) degree is very tall, phyletic norms numerous and jumbled a kind of big appearance, it already measurable discharge parameter, parameter of measurable also other (be like pressure, content, the) such as density.
Fluid plan detect by its action principle can divide for: Does  of be good at ⒍ employ neon of helmet of be good at ⒗ of κ of Pi of ψ of  of ⑺ of deceive of Zou beard pa does  of be good at ⒍ employ fertilizer uglying outskirt of Fen left-eyed flounder outskirt of Song have a nightmare answer exhaust yo?
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