Vortex flowmeter, integrated vortex flowmeter, vortex flowmeter manufacturer in Guangzhou, Guangdong

The vortex flowmeter adopts advanced differential technology, combined with measures such as isolation, shielding and filtering, to overcome the problems of similar products with poor shock resistance and small signal data disorder. It also adopts unique sensor packaging technology and protective measures to ensure the reliability of the product. The product has two types: basic type and composite type. The basic type measures a single flow signal and the composite type can simultaneously measure temperature, pressure and flow. Each type has an overall split structure to adapt to different installation environments.

The vortex flowmeter has a series of advantages such as wide range ratio, high accuracy, easy installation and maintenance, and wide medium adaptability. It can be widely used in the process measurement and energy-saving management of single-phase fluids such as various low-viscosity liquids, gases, steam, etc. in petrochemical, metallurgical, machinery, food, papermaking, and urban pipeline heating, water supply, and gas industries. For special inquiries, please call Guangzhou Dichuan Instrument Co., Ltd.

Working Principle of Vortex Flowmeter

Vortex street is composed of a vortex generator detection probe designed in the flow field and the corresponding Composed of electronic circuits, etc. When the fluid flows through the vortex generator, two rows of alternating vortices are formed on both sides of it. This vortex is called a Karman vortex street. On the basis of Karman vortex theory, Strohal also proposed that the frequency of Karman vortex is proportional to the flow rate of the fluid, and gave the relationship between frequency and flow rate:
/

In the formula: Vortex street generation frequency

Average flow velocity on both sides of the vortex generating body (/ )

Strohal coefficient (constant)
< br/>These alternating vortices form a series of alternating negative pressures. When this pressure acts on the detection probe, a series of alternating electrical signals are generated. After conversion, shaping and amplification processing by the preamplifier, the output is synchronized with the vortices. Proportional pulse frequency signal or standard signal.


Vortex flowmeter product features
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Easy installation and very convenient maintenance
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Simple and solid structure, no moving parts , very reliable in long-term operation
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Wide range, range ratio up to
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Small pressure loss, low operating cost, more energy-saving significance
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Wide range of applications, liquids, gases and vapors can be measured
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The calibration period is long, usually two years
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Within a certain Reynolds number range, the output signal is not affected by the The influence of changes in the physical properties and composition of the measured medium. The instrument coefficient is only related to the shape and size of the vortex generator. Generally, there is no need to recalibrate the instrument coefficient after replacing accessories
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Can be displayed on-site or remotely transmission, and can also be networked with the computer control system
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The detection probe does not directly contact the medium being measured, and the performance is more stable.


Vortex flowmeter technical parameters
Measuring medium: liquid gas steam

Measurement range: (see table below)

Nominal diameter: (see the table below) Non-standard products can be specially customized according to user requirements
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Temperature range: Piezoelectric ℃~℃ Capacitive type ℃~ ℃

Pressure specifications, higher pressure specifications can be specially customized

Range: Normal range: Extended range:

Pressure loss coefficient:

System measurement accuracy: % of liquid gas indication

% of steam indication

Insertion flow meter indication % of value

Power supply voltage: sensor + or + transmitter +

The on-site display instrument comes with a lithium battery

Output signal: sensor Pulse frequency signal ~ low level high level

Transmitter two-wire system ~ current signal

Allow vibration acceleration: piezoelectric capacitive type

Ambient temperature: sensor ℃~℃

Transmitter displays ℃~ ℃ on site

Environmental humidity: relative humidity ~ %

Signal far away Transmission distance:

Signal line interface: internal thread

Straight pipe length: upstream and downstream

Explosion-proof level: ( )Ⅱ intrinsically safe explosion-proof

Protection level: Ordinary submersible type

Instrument material: The instrument casing is made of aluminum alloy, and the meter body is made of stainless steel. Special materials can also be used according to user requirements.