Henan Airlines Traffic Instrument Co., Ltd. XFE series of vortex flowmeters Profile 

 An XFE series vortex flowmeter works 


 The bluff body (resistive fluid) set in the fluid, the body alternately on both sides of a regular vortex from the vortex, this vortex called Kaman Vortex shown in Figure 1. The vortex is listed in the bluff body downstream non-symmetrically arranged. Set vortex of the frequency f, measured media to flow the average velocity U, the face of the bluff body width d, the meter body diameter D, according to Kaman Vortex principle, the following relationship 


 f = SrU1 / d = SrU / md 
 (1) 

 Where U1 is - the body on both sides of the vortex average velocity, m / s; 

 Sr - Strouhal number; 

 m - the bluff body on both sides of the bow area of ??the pipe cross-sectional area ratio 

 Two. XFE series vortex flowmeter should advantages: 

 The vortex flowmeter as the most commonly used measuring instruments, compared with other flow measurement instruments, 
 There are several major advantages: 

 A wide range of applications, steam, gas, liquid flow can be measured. 

 2, simple and solid structure, no moving parts, high reliability, convenient operation and maintenance. 

 3, the versatility of the sensor is very strong, so that the sensors have good interchangeability of advanced CNC equipment for processing the sensor table body and the bluff body, to ensure the machining accuracy, so that the parts (especially the bluff body), Universal strong, which really will not affect the sensor due to the replacement of parts, repeatability and accuracy; can produce strong and stable vortex signal. 

 4, the detection devices are not in contact with the medium, stable performance, long service life. 

 5, the output flow proportional to the pulse signal or analog signal, zero drift, high accuracy, convenience, and computer networking 

 6, wide measuring range, range up to 20:1 

 7, the pressure loss. Caliber DN50 vortex flowmeter to measure the flow of combustible gas, if the pipeline within the maximum flow rate Qmax 
 = 200m3 / h, the pressure loss of the sensor is: △ P 
 = 1.08 × 10-6 ρv2 (kPa) = 0.605 KPa 

 8, within a certain range of Reynolds numbers, the flow characteristics from the fluid pressure, temperature, viscosity, density, composition of only a bluff body shape and size related. 

 9, the vortex flowmeter biggest advantage is particularly good vibration resistance, zero drift, and high reliability. 

 Third, the XFE series vortex flowmeter technical parameters 

 Measuring media: 
 Liquid, gas, steam; 

 Nominal pressure: 
 1.6Mpa 2.5Mpa 4.0Mpa 

 Medium temperature: 
 (-40 To 350) ° C; 

 Accuracy class: 1.0 1.5, 2.5; 

 Linearity: 
 ≤ ± 1.5%; 

 Repeatability: 
 ≤ 0.5% ≤ 1.0%; 

 Ambient temperature: 
 (-40 ~ 55) ℃; 

 Relative Humidity: 
 (5 to 90)% 
 ; 

 Atmospheric pressure: 
 (86-106) Kpa 

 Nominal diameter: 
 (15 ~ 1500) mm (greater than 200mm for plug-in structure); 

 Range: normal measurement of flow rate range of Reynolds number 1.5 × 104 ~ 4 × 106; gas 5 to 50m / s; liquid 0.5 ~ 7m / s 

 Output signal: 
 Voltage pulse; (4 ~ 20) mA DC (two wire);; 

 Power supply: Intelligent current-mode 
 24V DC; Smart Battery type 3.6V DC 

 Body material: 
 304 stainless steel, aluminum alloy 

 Connection: 
 (15 ~ 300) mm 
 Fa Lanka loaded structure; (200 ~ 1500) mm for plug-in structure; 

 Degree of protection: 
 IP65, IP67; 

 Cable interface: 
 PG10 

 Type of protection: 
 Intrinsically safe; 
 Flameproof 

 Please contact 

 Sales Manager: Zeng ultra- 

 Sales Hotline: 18637313237 

 15517300086 

 Tel :0373-2,677,766 

 Fax :0373-2,678,899 

 QQ: 
 83,380,304 

 Postal 
 Code: 453 700 

 Ground 
 Address: Grace Avenue, Xinxiang City, Henan Province, the western part of high-Bay northbound 

 Name 
 Said: Henan Airlines Traffic Instrument Co., Ltd. 

 Main 
 Page: http://www.hnxhyb.com.cn/