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New Chinese character display, integrated temperature and pressure compensation, flange-mounted
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New Chinese character display, integrated temperature and pressure compensation, flange-mounted

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Product description
Parameters

Design & installation for meter and ensuring caliber

 

chart(II) extent table of reference condition under working condition

 

caliber (mm) liquid gas
measurement range (m3/h) Output   measurement range (m<3/h) Output  
frequency range Small-Signal frequency range Small-Signal
(Hz)   (Hz)  
15 0.4~4 40~400 15 3.0~12 280~1200 100
20 0.8~8 33~330 10 6~30 230~1100 80
25 1.2~12 25~250 8 9.0~55 200~1200 70
32 2.0~20 20~200 6 12~120 120~1200 60
40 3.0~30 15~150 6 20~200 100~1000 50
50 5.0~50 13~130 5 30~300 80~800 40
65 8.0~80 9.7~97 4 50~500 60~600 30
80 12~120 7.7~77 3 80~800 50~500 25
100 20~200 6.7~67 2 120~1200 40~400 20
125 30~300 5.0~50 2 200~2000 35~350 20
150 40~400 3.8~38 1 300~<3000 30~300  
200 75~750 3.0~30 1 500~5000 20~200 10
250 110~1100 2.3~23 1 800~8000 16~160 5
300 160~1600 2.0~20 1 1100~11000 13~130 5
-300 160~1500 5.5~87 2 1560~15600 85~880 45
  180~3000 5.6~87 2 2750~27000 85~880 45
-500 300~4500 5.6~88 2 4300~43000 85~880 45
-600 450~6500 5.7~892 2 6100~61000 85~880 45
-800 750~10000 5.7~88 2 11000~110000 85~880 45
-1000 1200~17000 5.8~88 2 17000~170000 85~880 45
>(1000) agreement     agreement    

 

Tips:above table the caliber (300)~(1000) is plug-in

 

name density (kg/m3) name 密度(kg/m3)
air(dry) 1.2928 acetylene 1.1717
nitrogen 1.2506 ethylene 1.2604
oxygen 1.4289 propylene 1.914
argon 1.784 methane 0.7167
Ne 0.9 ethane 1.3567
ammonia 0.771 propane 2.005
hydrogen 0.08988 butane 2.703
carbon monoxide 1.97704 natural gas 0.828
carbon dioxide 1.3401 Coal gas 0.802

 

table(III) the density of common gas under normal state(0℃,absolute pr

 

Design & installation for meter and ensuring caliber 

Design & installation

It is important to install meter,if not installed well, then would affect precision, use-life and damage

(I)environmental request for installing:

To avoid strong current, high frequency and powerful switch set, power supply of meter shall be avoided to near by these equipments.

To avoid high-Temp & radiation source. if have to install it, need heat insulation & ventilated measure.

To avoid high-Temp & etchant gas, if have to install it, need ventilated measure.

vortex street flow meter shall be avoided to install on shaking part of pipeline. if have to install on it,shall add clamp device and vibration pad which located on 2D to enhance shake proof . meter has better to installed indoors, pay attention to waterproof when installing meter outdoors,special notice the joint, make cable conductor to U shape to avoid water get into the amplifier body Around installing place shall save enough space,so that install connection line and maintenance routine

(II)Request for installing of pipeline meter:

vortex street-flow meter need a request for about installing point up-down stream pipe,if not flow field of medium will be affected in pipeline,refer to measurement accuracy of meter。up-down stream pipe of meter as chart(III)

D is nominal caliber of meter                                                                     UNIT: mm

sensor upstream pipe type

front and back straight pipe length

sensor upstream pipe type

front and back straight pipe length

concentric contract opening- valve

xq

90 degree

elbow

xq

two 90 degree

Elbow which on a same plane

xq

two 90 degree

Elbow which not on a same plane

xq

concentric expan ded pipe

xq

control valve half open the vale (not recommend)

xq

chart(III)

Tips: control valve shall not install on upstream of meter, it better to the downstream 10D.

Up-down internal diameter of pipe shall be same. if not,than internal diameter of pipe Dp and vortex street meter inner diameter Db, shall be as follow

0.98Db≤Dp≤1.05Db

                                                         

Designing pipeline & caliber set

     

Up-down internal diameter of pipe shall be concentric with inner diameter of flow meter,The non- axiality shall be less than 0.05Db

1. sealing gasket which between meter with flange,can not joint inside pipe when installing,and its inner diameter shall more than meter `s about 1~2mm

2.Design for temp & press point. When test pipeline need install temp & pressure transmitter,pressure tap may be downstream of 3-5D,thermometer hole may be downstream of 6-8D,see chart(VII)。D is nominal caliber,Unit:mm

3. Meter can be installed by horizontal, vertical and bias ways on pipeline.

4. When test air, gas can flow anywhere when under uptake pipe to install. if there some air inside pipe ,to prevent liquid into the test pipe,so the air may from below to top, as list(IV)a

5. When test for liquid,to ensure pipeline filled full,so install meter under vertical or bias working condition,shall ensure liquid flow from below to top。If there are some air inside of pipeline,meter may be installed under pipeline to prevent air into it.

As chart(IV)as follow:

xq

 Chart(IV) 正确=right , 液体=liquid, 错误=wrong,气泡= air bubble

when test high& low temp medium,may pay attention to heat preservation. inside changer(inside body of gauge outfit)must be not more than 70℃;if low temp inside will produce water into meter and reducing insulation.

 

Ordering Notice & Sample chart 

Ordering Notice & Sample chart

1.Honorific client,Pls do things well as follow before you choose our product, and read model selection sample carefully

a. Check working condition :Tem, press, pipe size, etc. b. Check flow range of test medium, special minimum discharge to ensure meter size & pipe parameter. c.Ensure the mounting position & straight pipe,to clear the working condition before installing d.Fill order form fine,as Appendix III

2.Model selection table of vortex street flow meter(JB/T9294-1999 standard)

1.Model selection table of sensor

Model selection for LUGB/E series vortex street meter

Model chart Describing
LU   vortex street meter
G   sensor
TEST WAY B   piezoelectric transducer  
E   Capacitance sensor  
Joint way 1   flanged joint type  
2   flanged installing type  
3   simple plug-in  
4   ball valve plug-in  
Test medium   2     liquid
3     gas
4     vapor
inside nominal diameter   2   DN25
… unit:mm
30 DN300
service environment   P   ordinary type
B   explosion proof type
output signal   1   output pulse
2   4~20mA currentoutput,liquid-crystal display
3   RS-485 communication
4   battery supply feed, without Temp、get pressure
5   Tem-pre system,4~20mA current output type
6   Tem-pre system,battery supply feed type
model selection e.g.: LUGE2405-P2 full package type capacitance vortex street meter,flanged installing type joint, medium is vapor drift diameter of meter is DN50, ordinary 4~20mA current signal output

 

2. Table of comparisons sensor drift diameter

 

inside nominal diameter

DN mm

25

32

40

50

65

80

100

125

150

200

250

Sign NO.

02

03

04

05

06

08

10

12

15

20

25

 

 

300

350

400

450

500

600

700

800

1000

1200

1500

Sign NO.

30

35

40

45

50

60

70

 

A0

 

A5

 

Keyword:
Vortex flowmeter
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