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Double Rotor Flowmeters

Summary

 HUF double rotator flow meterfollowing is flow meteralso call it double spiral flow meteris one of volume flow meter. Double spiral rotators is the moving object in the metering cavityplay the role as separatecalculationdelivery and exhausting. Add position gear to this type in the flow meter constructionmake the two rotators not contact each other. Stable running with low noisy, low wearing, high precise, high viscosity so that allow the fine granule through the measured liquid, and not block the meter as well.

Character 

Suit for thin oillight oilthick oilcrude oil with high sand containinghigh water containingthe measured liquid with high viscosity range.

The flow volume is about two times of same volume meter.

Long life, high precise, and high reliability.

Small pressure lost.

There are two type of counter which is mechanic counter and electron countermany output method for selection. Such as pulseequivalent4-20MARS485Hart agreement etc.

Explosion proof is IaCT4safety type);Explosion isolated dBT4Explosion isolated type);Protection IP65

Work principal

As followingthis flow meter measure the liquid volume directly by special double spiral rotators.

Liquid meter shall complete the measurement in cavity. A couple of spiral rotators shall rotating with the liquid pressurerotator and metering cavity wall form seal spaceshadow part, and each rotating will exhaust 8 times of shadow volume. Therefore, this flow relation is only to calculate the times of rotating, that is to calculate accumulated flow volumeand according to the rotating times per second to calculate the instant flow volume.

 

Main technical data

Diametermm

15400  

Precise   

0.10.20.5 grade

Pressure lost

01000mpas80kpa

Work pressure

1.62.54.06.310162042MPa

Temperature Range

-40+80-40+150-40+250-40+350

Medium viscosity

0.11000mpa.s

Environment condition

Temperature -30+70 Humidity 5%95% pressure 86kpa106kpa

Connect flange

National standardand according to customer’s request

Explosion grade

laII CT4, dII BT4

Flow range

Diameter

mm

Flow range m3/h

Precise 0.5 grade

Precise 0.2 grade

Precise 0.1 grade

15

0.63

13


25

1.59

26


40

420

618

918

50

636

1030

1530

80

1080

2070

3060

100

20120

30100

4590

150

40250

80240

100200

200

60400

120360

160320

250

100600

180540

240480

300

150900

240720

300600

400

3001600

5001500

6001200



 

 




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