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江西TYPE LC OVAL FLOWMETER INSTRUCTION MANUAL

發布時間:2018-04-20

GeneralDescriptionOvalmetersareinstrumentsusedforthecontinuousandintermittentmeasurementandcontrolofthepipeliquidflow,whicharetypicalofpositivedisplacementmeter,featurelargeflowrange,lowpressureloss,largeviscosityrange,easyinstallation,highaccuracyandcanmeasurehightemperature,highviscosityliquidswitheasycalibration.TypeLCovalmetersarefittedwithon-sitepointerindicationandrollerintegrationdevicewhichcanindicatetheliquidflowandintermitature:seriesLC-A(-20℃~+60℃),seriesLC-B、E、L(-41℃~+60℃)60℃~200℃(withhightemp.radiatorinstalled)LC-Q、L:-20℃~+60℃;4Explosion-pro

General Description

Oval meters are instruments used for the continuous and intermittent measurement and control of the pipe liquid flow, which are typical of positive displacement meter, feature large flow range, low pressure loss, large viscosity range, easy installation, high accuracy and can measure high temperature, high viscosity liquids with easy calibration.

Type LC oval meters are fitted with on-site pointer indication and roller integration device which can indicate the liquid flow and intermittent flow passing through the pipeline. For the different liquids (acid, alkali, salt, organic solution etc.), the meters can be made of different materials (cast iron, cast steel, stainless steel etc.) . The meters are widely used for the flow measurement in the field of petroleum, chemical, chemical fibre, traffic, food industries and commerce, medical and sanitary departments.

Structure and Operation Principle

Oval meter is generally comprised of a flow transducer and a counter mechanism. The main part of the transducer is a measuring chamber which consists of a pair of oval wheels and a sealing coupling. The counter mechanism contains speed reduction gears, adjusting device, counter, and pulse transmitter etc.

In the measuring chamber, a pair of oval wheels and cover plate make a crescent shape cavity which is used as a measuring unit.The oval wheels are rotated by the pressure difference in the inlet and outlet of the meter and drive the inlet liquid through the cavity to the outlet, each revolution of the oval wheels displaces fluid four time the volume of the cavity, the total revolutions of the oval wheels and the revolution rate will be transferred to the mechanical counter, and the total liquid volume and instantaneous flow will be known by the pointer display and the roller integration. The attached signal generator converts the rotary axial angular shift to the pulse signal and then transmits it to the customers electrical indicator for remote integrated flow and instantaneous flow indication and control.

General Technical Specification

1.Materials of main parts and the nominal operating pressure


Shell and cover

cover plate

oval wheel

Rotary shaft

bushing

Nominal pressureMPa

LC-A

Cast steel

Cast iron

Cast ironStainless steel

Alloy aluminum,

engineering material

 

Stainless steel

Bronze(with oil) or rolling bearing

1.6

LC-E

Cast steel

Cast iron

Under DN50 6.3

DN80-100  4.0 6.3

DN150-200  2.5

LC-Q

Cast iron

Cast iron

Bronze(with oil) or rolling bearing graphite

1.6

LC-L

Cast

aluminum

Cast ironStainless steel

graphite

1.62.5

LC-BC

Stainless steel

Stainless steel

Stainless steel

Bronze(with oil)graphiterolling bearing

1.6

Notes:1. 0Cr18Ni12Mo2Ti for type LC-C0Cr18Ni9Ti for type LC-B

2. Flange is convex under 2.5MPa ,and roughness at 6.3 MPa;and both of the above at 4.0 MPa

2.Accuracy class       class 0.5,class 0.2

3.Operating temperature: series LCA(-20~+60)series LC-BEL(-41~+60)

60℃200℃(with high temp. radiator installed)

                       LC-QL: -20℃+60℃;

4 Explosion-proof mark: ExiaCT5, dBT4

5. Flow range:                                                 unit: m3/h

<td width="68" valig

Type

DN

Viscosity (mPa. s)     

<0.3

<0. 

0.3~0.8

0. 

0.8~2

2~200

200~1000

 

1000~2000

 

 

 

 

 

LC-10

10

 


0.08-0.25

 

0.1-0.25

0.05-0.25

0.08-0.25

0.05-0.25

 

0.03-0.05

0.02-0.05

 


LC-10

10

 


0.2-0.5

 


0.08-0.5

0.08-0.5

0.05-0.5

 

0.06-0.3

0.03-0.3

 

0.03-0.2

 

 

LC-15

15

 


0.75-1.

5


0.3-1.5

0.3-1.5

0.15-1.5

0.3-3

0.2-1.0

0.1-1.05

 

0.07-0.75

 

 

 

LC-20

20

 


1.5-3

 

1-3

0.5-3

0.5-3

0.3-3

1.5-15

0.4-2.1

0.2-2.1

 

0.15-1.5

 

 

 

LC-25

25

 

4-6

 

3-6

 

2-6

1-6

1-6

0.6-6

1.56-15

0.8-4.2

0.4-4.2

 

0.3-3

 

 

 

LC-40

40

 

9-15

 

7.5-15

 

5-15

2.5-15

2.5-15

1.5-15

 

2.1-10.5

1.0-10.5

 

0.7-7.5

 

 

LC-50

50

 

10-24

 

8-24

 

8-24

4.8-24

4.8-24

2.4-24

 

2.4-16.8

1.6-16.8

 

1.2-12

 

 

 

LC-B4050

4050

8-20

6-20

6-20

4-20

4-20

2-20

2.8-14

1.4-14

1.0-10

LC--65

65

 

27-40

 

20-40

 

15-40

8-40

8-40

4-40

 

5.6-28

2.8-28

 

2-20

 

 

 

LC-80

80

 

40-60

 

30-60

 

20-60

相關標簽: gears adjusting pulse reduction sealing
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