Abstract: the waist wheel flow meter scale of choose and buy when pay attention to the three elements of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
Its structure characteristic is: the waist wheel
flowmeter in flow meter shell has a measuring room, measuring room can have a pair or two pairs of tangent waist wheel rotation.
Outside the meter shell with two search wheel coaxial installed a pair of transmission gear, make two each other mesh.
More flow meter manufacturers choose model price quote you are welcome to inquire, here is a note that three elements when the waist wheel flow meter scale of choose and buy the article details.
Its structure characteristic is: the waist wheel flowmeter in flow meter shell has a measuring room, measuring room can have a pair or two pairs of tangent waist wheel rotation.
Outside the meter shell with two search wheel coaxial installed a pair of transmission gear, they mutually meshing make two waist wheel can be linked.
Waist wheel flowmeter selection is typically considered from these four points, namely, according to the nature of the current body condition determine the flow sampling device and flow and measuring instrument type and specification, selection are completely accords with the instrument of technology provides conditions, considering the precision grade and economy, considering the safety of the measurement.
Is 1, according to the current body of properties and flow conditions, to determine the waist wheel flowmeter types and specifications of the nature of the fluid flow and determining forms of the flowmeter and specifications.
First selection want to consider the several key physical and chemical properties of fluid, fluid state (
Solid state gas or liquid)
, chemical corrosive fluid, the conductivity of the fluid, the viscosity of the fluid.
Secondly to fully understand the application scope of all kinds of flow meters.
In the selection should be considered when physical and chemical properties of the fluid.
The fluid is in solid, as a general rule, be dust or piece of zhuang, flowmeter selection only impulse flowmeter, belt reported and rail weighbridge 3 kinds.
In the liquid and gas fluid flow meter form is more, the general flow meter has a dedicated gas measurement series and models, for example, we use the coriolis force mass flowmeter is special and gas measurement series models.
Liquid condition more bad of the situation to corrosion, conductive, with solid particles, but in this case zui good choice electromagnetic flowmeter.
To adapt to the high viscosity of the flowmeter are oval gear flowmeter, waist wheel flowmeter, scraper flowmeter, the target flowmeter, wedge flowmeter, etc. , concrete and in accordance with the requirements of accuracy, economy and other actual conditions.
Zui with fluid in the selection of corrosion after must pay attention to the liquid flow meter by the choice of materials, such as in the electromagnetic flow meter for measuring the electrode must be used when hydrochloric acid liquid tantalum electrode or electrode is easy to corrode.
2, waist wheel flowmeter, we must give full consideration to the choice of the technology provided by the table.
Would think of the static pressure and temperature of the medium, flow meter of the static pressure and heat resistance and ensure the service life of the instrument and an important component of the accuracy of instrument the static pressure of the compression degree, it should be slightly larger than the working pressure of measured medium, typically take 1.
25 times, in order to make sure no leak or an accident.
Followed by the range of choice, mainly instrument calibration limit choice.
Choose the small, easy to overload, damage the instrument;
Choose the big, impedes the accuracy of the measurement.
Zui big flow of national standard of no more than 95% of full scale;
Normal flow is 70% ~ 85% of full scale;
Zui small flow rate is not less than 30% of full scale.
Zui after the diameter of the more important instrument conditions is process, some don't particularly large diameter flowmeter, some of the large diameter flowmeter are expensive, at present is suitable for big diameter at a constant speed of flow meter has a flute tube, plug-in vortex, insert the turbine, electromagnetic flowmeter, venturi tube, ultrasonic flowmeter.
3, taking into account the waist wheel flow meter accuracy level and economy flowmeter accuracy level to conform to the state economic commission [
1983]
No. 244 on the accuracy requirement for energy measurement instruments.
General requirements for precision higher place mainly include materials into the factory and into production equipment measurement, the device and the factory sales of finished products, process measurement formula of raw material, the price is expensive material measurement, etc.
For the flow of production equipment for general reference only usually choose price lower glass rotor flowmeter and metal rotor is cheap.
Utilities on the gas in the production,
Air, nitrogen, steam)
Usually using vortex flowmeter, a variety of water mainly use electromagnetic flowmeter, the two choices are both economic and can satisfy the precision requirement.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
mass flow meter has become a standardized way of dealing with u shape
coriolis mass flow meter.
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turbine flow meter? Visit Sincerity Flow Meter and contact us as soon as possible!
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