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KY Instrument Positive Displacement (Roots) Flow Meter
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KY Instrument Positive Displacement (Roots) Flow Meter

Kaifeng Instrument LL series Roots flow meter is a kind of positive displacement flow meter, it is designed with concise structure, is accurate and reliable in use, has no special requirement for the fluid field in the pipeline, and is applicable for …

Product Overviews

Kaifeng Instrument LL series Roots flow meter is a kind of positive displacement flow meter, it is designed with concise structure, is accurate and reliable in use, has no special requirement for the fluid field in the pipeline, and is applicable for medium with a wide range of viscosity, working with a wide flow range. It is widely used in the measurement of liquids in industries of petroleum, chemistry, pharmacy, transportation, food, etc..

The cycloidal suface of rotors are independly designed by our R&D team, it ensures the meter works smoothly with high accuracy. During working, the rotors don't contact with eath other, which ensures a good repeatability and reliablility of the meter.


111 roots structure.jpg
 PD Roots types .jpg

Features And Functions


l  High accuracy, accurate up to 0.1%

l  Pistons rotating without contact, good repeatability.

l  Low vibration and noise.

l  Do not need straight pipe sections at up or down streams, easy to install .

l  On-site displayand optional for the photoelectric pulse transmitter or the intelligent gauge outfit to output the pulse and current signals.


Optional accessories

l  Air eliminator

l  Strainer

l  Integrated air eliminator and strainer

Technical Parameters

Nominal Diameter:

DN15 ~ DN500mm

Nominal Pressure:

PN1.6 ~ 6.3MPa

Medium:

Petroleum, Petroleum  products, Chemical medium etc.

Medium Temperature:

-20℃~250℃

Ambient Temperature:

-20℃~55℃

Body Material:Cast Iron/ Cast  steel/ SS304/ SS316
Accuracy:±0.1%, ±0.2%, ±0.5%

Viscosity:

0.6~500mPa.s

Flow Range:

0.2~3000m3/h

Power Supply: 24V.DC (two-wire system/three-wire  system)
On-site Indication:

Mechanical dial (mechanical counter)/
     Backlit LCD digital display(Instantaneous flow + total)

Ex-protection:ExdⅡBT4
Housing protection:IP65



Performance Parameters


     Application    type

Roots Flow Meter    (Basic type)

Accuracy

±0.5%

±0.2%,±0.1%

Viscosity(mPa.s)

>4~150

>150 ~ 500

>4~150

>150 ~ 500

Nominal    Bore(mm)

Flow Range     m3/h

15

0.25~2.5

0.2~2.2

0.5~2.5

0.2~2.0

25

0.6~6

0.4~5

1.2~6

0.5~5

40

1.6~16

1.2~14

3.2~16

1.4~14

50

2.5~25

2~22

5~25

2.2~22

80

6~60

4~50

12~60

5~50

100

10~100

7.5~85

20~100

8.5~85

150

25~250

20~220

50~250

22~220

200

30~300

22~260

60~300

26~260

250

60~600

40~500

120~600

50~500

300

100~1000

75~850

200~1000

85~850

400

200~2000

160~1800

400~2000

180~1800

500

300~3000

210~2500

600~3000

250~2500

 


     Type

Roots Flow Meter( Low viscosity)

Accuracy

± 0.5%

± 0.2%

Viscosity (mPa·s)

≤0.1~0.5

>0.5~2

>2~6

≤0.1~0.5

>0.5~2

>2~6

Nominal Bore (mm)

Flow Range (m3/h)

40

5.3~16

4~16

3.2~16

6.4~16

5.5~16

4~16

50

8.3~25

6.3~25

5~25

10~25

8.5~25

6.3~25

80

20~60

15~60

12~60

24~60

20~60

15~60

80 (II)

15~40

13~40

12~40

16~40

13.3~40

10~40

100

34~100

25~100

20~100

40~100

35~100

25~100

150

83~250

63~250

50~250

100~250

80~250

63~250

200

100~300

75~300

60~300

120~300

100~300

75~300






Industry Applications

>national defense

>chemical

>petroleum

>metallurgy

>energy

>medicine

 

 >light industry

>food

>Water treatment

>Traffic detection

>process control industries



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