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Intelligent Vortex Gas Flow Sensor-SN53D

Product introduction

SN53D series intelligent vortex gas flow sensor is mainly used for flow measurement of industrial pipeline fluid medium. It is characterised by small pressure loss, large range and high accuracy, and is virtually unaffected by fluid density, pressure, temperature, viscosity and other parameters when measuring volumetric flow under working conditions. No moving mechanical parts, so high reliability and low maintenance. The instrument constants are stable over long periods of time.
The instruments use piezoelectric stress sensors, which are highly reliable and can be operated in an operating temperature range of -20°C to +300°C. The instruments are available with analogue standard signals or digital signals. There are analogue standard signals and digital pulse signal output, easy to use with computers and other digital systems, is a more advanced, ideal flow meter.

Measuring Principle Technical Parameters Flowmeter Wiring Instructions Selection Table

In the fluid vertically inserted into a column of resistance body, on both sides of the vortex will be alternately generated, with the downstream direction of the fluid movement to form a vortex column, known as the Carman vortex street, see Figure 1. vortex street resistance body called vortex generator. Experimentally, the frequency of the vortex is proportional to the flow velocity, which can be expressed by the following formula:

Experimentally, it is proved that the asymmetric vortex column can maintain a stable state when the distance h between two columns of vortices and the distance L between two vortices in the same column satisfy the formula h/L=0.281. When the flow
Reynolds number Re in the range of 5000-150,000, Sr is basically unchanged, so when the column width of the vortex generator d and Strauer Haar number Sr is a fixed value of the frequency of vortex generators
With the average flow rate of the fluid is proportional to the flow rate of Q is proportional to the pressure, temperature, density and other parameters have nothing to do.
When the vortex generated on both sides of the column, the sensor is perpendicular to the flow direction of the role of alternating lift sensing signal, lift the frequency of change is the vortex frequency, the sensor will be the signal
The sensor will send the signal to the converter to amplify and shape the pulse signal which is linearly proportional to the flow rate, and output it directly or convert it to 4-20mA standard signal output.
The relationship between flow rate Q and frequency f is as follows:

Connection method NPT1/2
Measuring medium Gas
Medium temperature -10℃~ +80℃
Ambient temperature -20℃~ +45℃
Pipe diameter DN8~ 15mm
Output signal 4-20mA(opto-isolated, max load 500 Ω)
or RS485 (optically isolated)
Power supply DC24V
Pipe material 304 stainless steel
Pressure level 1.6MPa
Gauge Indication Instantaneous flow rate, cumulative flow rate, standard flow rate, current output value, etc.
Protection class IP65
Measuring accuracy ± 1.5%

The product adopts DC24V power supply, the instrument has 4-20mA output and RS485 output.

Red:V+ Power supply DC24V
Brown:V-
Yellow:1+ 4-20mA output
Grey:V-
White:A/D+ RS485 output
Brown:A/B-
SN53D- A A 4R A P1 Detailed description
SN53D- -         SN53D Series Vortex Gas Flow Sensor
  A         With display
    A       Flow range:   1-7m³/H     ( DN:8mm )
    B       Flow range:  2-18m³/H( DN12mm )
    C       Flow range:  3-30m³/H( DN15mm )
      4R     4-20MA output + RS485 communication
        A   Pipe material: 304 stainless steel
        B   Pipe material: 316L stainless steel
          P1 Pressure level: 1.6MPA
            Special pressure can be customised
* The selection table is for parameter selection only, and will be shipped with the corresponding code for the parameter.
Shanghai Kayuan Electronic
Technology Co., Ltd.
Shanghai Kayuan Electronic Technology Co., Ltd is an enterprise specializing in the production and R&D of industrial fluid sensors and controllers. Its main products include switches and sensors for flow, pressure, temperature, and liquid level. In 2008, our assembly plant was established in Shanghai, China, to produce the PAKU series of products. We adopt advanced technology and manufacturing processes across the board. With our professional design and production technology, comprehensive product lines, excellent quality, and sales network services, we can not only provide users with timely and professional technical support but also offer high - quality one - stop services. The company has set up various departments such as the purchasing department, R & D department, quality management department, finance department, sales department, after - sales department, general office, laboratory, archive room, calibration workshop, production workshop, inspection area, storage area, shipping area, and a tea break room, aiming to provide products of excellent quality and sincere services. We adhere to the customer - centric concept of creating value for customers. According to the industry needs of customers, we continuously update technology and optimize services, aiming to become a leader in the field of process automation. PAKU products are now widely used in different industries, including automation complete sets of equipment, petroleum equipment, chemical equipment, power equipment, welding equipment, steel equipment, metallurgical equipment, automobiles, and water treatment. We have served many customers at home and abroad, and our products are sold to countries such as Canada, the United States, Brazil, Indonesia, Vietnam, Thailand, and Russia. In the increasingly competitive global market in the future, PAKU will, as always, serve a wide range of domestic and foreign customers with excellent quality, reasonable and competitive prices, on - time delivery, and perfect after - sales service. We welcome extensive cooperation with OEM and ODM customers.
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