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Liquid turbine flowmeter

Turbine flowmeter is the main variety of impeller type flow (velocity) meter. It consists of a sensor and a conversion display.
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     I. Overview

Turbine flowmeter is the main variety of impeller type flow (velocity) meter. It consists of a sensor and a conversion display. The sensor uses a multi-blade rotor to sense the average flow rate of the fluid, thereby deriving the flow or total volume. Turbine flowmeters have been widely used in petroleum, chemical, scientific research, national defense, metering and other fields.

2. Product features

1. High accuracy, generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;

2. Good repeatability, short-term repeatability can reach 0.05%~0.2%. Because of the good repeatability, such as frequent calibration or online calibration, higher accuracy can be obtained, and it is the preferred flowmeter in trade settlement;

3. Output pulse frequency signal, no zero drift, strong anti-interference ability;

4. A higher frequency signal (3~4kHz) can be obtained, and the signal resolution is strong;

5. Wide range, medium and large diameters can reach 1:20, and small diameters are 1:10;

6. Compact and lightweight structure, convenient installation and maintenance, and large circulation capacity;

7. Suitable for high-pressure measurement, no holes are required on the meter body, and it is easy to make a high-pressure meter;

8. It can be made into a plug-in type, suitable for large-diameter measurement, with low pressure loss, low price, continuous flow and removal, and convenient installation and maintenance.

    3. Basic parameters and technical performance

1. Technical performance

Table 1 Technical performance

Instrument caliber and connection method

4, 6, 10, 15, 20, 25, 32, 40 are connected by thread

(15, 20, 25, 32, 40) 50, 65, 80, 100, 125, 150, 200 are connected by flange

Accuracy class

±1%R, ±0.5%R, ±0.2%R (specially required)

Turndown ratio

1:10; 1:15; 1:20

Instrument material

304 stainless steel, 316 (L) stainless steel, etc.

Measured medium temperature (℃)

-20~+10℃

Environmental conditions

Temperature -10~+55℃, relative humidity 5%~90%, atmospheric pressure 86~106kPa

output signal

Sensor: pulse frequency signal, low level ≤0.8V, high level ≥8V

Transmitter: two-wire 4~20mADC current signal

Power supply

Sensor: +12VDC, +24VDC (optional)

Transmitter: +24VDC

On-site display type: the meter comes with 3V lithium battery

Signal transmission line

STVPV3×0.3 (three-wire system), 2×0.3 (two-wire system)

Transmission distance

≤1000m

Signal line interface

Basic type: Hausmann connector, explosion-proof type: internal thread M20×1.5

Explosion-proof grade

Basic type: non-explosion-proof product, explosion-proof type: ExdIIBT6

Protection level

IP65

2. Measuring range and working pressure

Table 2 Measuring range and working pressure

Instrument caliber

(Mm)

Normal flow range ( m 3 /h )

Extended flow range ( m 3 /h )

Routine stress tolerance

(MPa)

Special pressure rating (MPa)

(Flange connection method)

DN 4

0.04~0.25

0.04~0.4

6.3

12, 16, 25

DN 6

0.1~0.6

0.06~0.6

6.3

12, 16, 25

DN 10

0.2~1.2

0.15~1.5

6.3

12, 16, 25

DN 15

0.6~6

0.4~8

6.3, 2.5 (flange)

4.0, 6.3, 12, 16, 25

DN 20

0.8~8

0.45~9

6.3, 2.5 (flange)

4.0, 6.3, 12, 16, 25

DN 25

1~10

0.5~10

6.3, 2.5 (flange)

4.0, 6.3, 12, 16, 25

DN 32

1.5~15

0.8~15

6.3, 2.5 (flange)

4.0, 6.3, 12, 16, 25

DN 40

2~20

1~20

6.3, 2.5 (flange)

4.0, 6.3, 12, 16, 25

DN 50

4~40

2~40

2.5

4.0, 6.3, 12, 16, 25

DN 65

7~70

4~70

2.5

4.0, 6.3, 12, 16, 25

DN 80

10~100

5~100

2.5

4.0, 6.3, 12, 16, 25

DN 100

20~200

10~200

1.6

4.0, 6.3, 12, 16, 25

DN 125

25~250

13~250

1.6

2.5, 4.0, 6.3, 12, 16

DN 150

30~300

15~300

1.6

2.5, 4.0, 6.3, 12, 16

DN 200

80~800

40~800

1.6

2.5, 4.0, 6.3, 12, 16

 

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Copyright  © 2021 Kaifeng Henghe Flow Meter Co., Ltd.
豫ICP备2021035603号-1
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