For more information on vortex flowmeter, choose a more suitable flow meter.

Vortex flow meter

1.Its working principle:

LUGB-type 2 vortex flow sensor measuring in the flow of liquid of steam ,gas and low viscosity according to Carmen and Struhal relavent spiral produce and on thetheory of the relationship .As show in picture ,In the meter body vertical insert a strangular prism root namely the happening of the body,when eddies of medium flow through the table body, in triangulai prism behind the a;ternate produce in opposite directions regular karman swirl ,its spiral separation and the flow of the medium frequency F speed by head is proportional to the V detected the number of spiral ,can measure the flow velocity,again according to the table body mouthComputational formula ad follows:

F=Sr*V/(1-1.27*d/D)…………………………………………………formula 1

Q=3600*F/K ………………………………………………………………formula 2

M=Q*p………………………………………………………………………..formula 3

F..... The liquid flow through the vortex triangular prism produce the vortex frequency(unit:Hz)

Sr…Strouhal number(unit:dimensionless)

V…….internal of pipe fluid rate(unit:m/s)

d…….the width of Vortex meter internal triangular prism(unit:m)

D… Vortex meter inner diameter (unit:m)

Q…….Instantaneous volume flow rate (unit:m3/h)

K…..Vortex of meter coefficient(unit:pulse number/m3)

M…….Instantaneous quality flow rate(unit:kg/h)

P………Fluid density(unit:kg/m3)

2.Its feature:

(1).Simple structure, no moving parts wear;

(2).High accuracy and good reliability, don’t need on-site debugging;

(3).Can be long-distance transmission of flow signals, and computer networking, centralized management;

(4).Unique design of the amplification board, gas or liquid can be used.

3. Its technical index:

(1).The accuracy level:1.0(2).Nominal pressure:1.6Mpa ,2.5Mpa,4.0Mpa etc more than

(3).Be measurement medium temperature :-40℃～350℃ 

(4).The pressure loss:resistance coefficient CD≤2.4

(5).Power supply:12～24V

(6).EX-proof Class: la‖CT6(Intrinsically safe explosion-proof)

(7).Output signal:Voltage pulse low level≤1 V standard current signal 4～20Ma

(One)gas ,liquid 

        Vortex flowmeter high limit flow general can not be affected by medium pressure ,temperature and etc,low limit flow depends on the operation condition of the medium density and viscosity .Therefore ,determine the flow range is actually actual usable the low limit of flow.The best working flow in sensor range 1/2～2/3 palces.

If you do not understand the correspondence between the flow range and the caliber of the vortex flowmeter, please refer to the following table：

Size (mm)	Liquid		Gas
	Measuring range (m3/h)	Output frequency range(Hz)	Measuring range (m3/h)	Output frequency range (Hz)
20	1~10	40~396	5.5~50	218~1982
25	1.6~16	32~325	8.5~70	172~1420
40	2.5~25	13~130	22~220	115~1147
50	3.5~35	9~93	36~320	96~854
65	6.5~68	8~82	50~480	61~583
80	10~100	6~65	70~640	45~417
100	15~150	5~50	130~1100	43~367
125	27~275	5~47	200~1700	33~290
150	40~400	4~40	280~2240	27~221
200	80~800	3~33	580~4960	24~207
250	120~1200	3~26	970~8000	20~171
300	180~1800	2~22	1380~11000	17~136
(400)	180~3000	5.6~87	2750~27000	85~880
(500)	300~4500	5.6~88	4300~43000	85~880
(600)	450~6500	5.7~89	6100~61000	85~880
(800)	750~10000	5.7~88	11000~110000	85~880
(1000)	1200~1700	5.8~88	17000~170000	85~880
Note: Size (300) ~ (1000) are insertion type

For more information, please click on our website： http://www.aft-flowmeter.com