Mechanical Bi Rotor Flowmeter (LSZ)

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Model NO.: LSZ
Measuring Media: Liquid
Measuring Principle: Volumetric
Measurement Object: Closed Pipeline
Certification: JIS, DIN, GB, CE, ISO
Trademark: YINUO
Transport Package: Wooden Case
Specification: Size from 3/8inch to 16 inch
Origin: Shanghai, China.
HS Code: 9026100000
LSZ- Double-Rotator Flowmeter
General
LSZ- Double-Rotator Flowmeter is the latest & international super-class volumetric-type flowmeter. It is a
type of precise instrument measuring and controlling liquid flow in the pipeline, featuring high measurement
precision, smooth running, free of pulsation, low noise, long service life and excellent adaptability to
viscosity etc.. Therefore, the product has been widely used in various fields such as petroleum, chemical,
metallurgy, electric power, shipping, traffic, dock, mine, thermal power, and foodstuff industries etc.. It is
especially suitable for commercial trade measurement for crude oil, high condensation oil, crude oil with
high water content, petroleum products, foodstuff and chemical solutions as well as measuring
management and control of engineering automation. The codes and characters displayed on the flowmeter
can be directly read locally. The photo-electric pulse converter equipped can output electric pulse(current)
signals to the displaying instrument and computer for handling. Thus, the flow in the pipeline can be
remotely controlled.
                                                           Mechanical Bi Rotor Flowmeter (LSZ)
Principle
The measuring chamber of the double-rotator flowmeter consists of interior casing, a pair of helix rotators
and top & bottom cover plates. These formed a cavity with known volume which can be used as the
measuring unit for the flowmeter. The rotator of the flowmeter rotates under the tiny pressure difference
between the inlet and outlet and continually sends the liquid at inlet to the outlet after cavity
measurement(See Fig.2). The rotator transmits the rotating numbers to the counter by means of sealed
coupling and driving system so that the total volume of the liquid passing the flowmeter can be directly
displayed.

Picture 2: The Principle of LSZ- Flowmeter

                                                Mechanical Bi Rotor Flowmeter (LSZ)

                                                          Mechanical Bi Rotor Flowmeter (LSZ)
  1. Inner measuring chamber
  2. Chamber cases
  3. Rotors
LSZ-Bi-rotator Flowmeter is a positive displacement meter utilized in the most demanding applications requiring accuracy, long life and ruggedness. It features two precisely machined rotating members known as helical rotors which rotate and mesh within the meter's interior housing in order to form a measuring chamber of known volume which may be used to accurately determine volumetric flow rate as a function of the rotors' velocity. As liquid enters the intake of the measurement element, two finely timed rotors divide the liquid into precise segments of known volume and return those segments to the flowing stream. During this transition, the rotation of the two rotors is directly proportional to volumetric throughput. Volume indication is determined by mechanical output gearing leading to electronic or mechanical  registration devices

Main Technical Parameters                                 Table:1
Nominal Dia. (mm) 8~400
Accuracy ±0.1%, ±0.2% and ±0.5%
Pressure loss 0~1000mPa.s<80Kpa  1000~20000mPa.2<150KPa
Nominal pressure 1.6, 2.5, 4.0, 6.4 MPa
Temperature range -20°C ~ +80°C  +80°C ~ +150°C  +150°C ~ +250°C
Media viscosity 0~20000mPa.s
Ambient temperature -40°C ~ +70°C
Connected flange Can be custom-made
Photoelectric pulse(current)converter Exd II CT6(Excluding acetylene)
Electronic meterhead Exd II CT2-T6
Range of Flow       
For Accuracy: 0.5% and 0.2%                                                            Table.2
 
Nominal
Dia.
(mm) 		Flow range m3/h Pulse equivalent liter/pulse
0.32-0.8mPa.s 0.8-2mPa.s 2-5mPa.s 5-400mPa.s 400-2000mPa.s 2000-20000mPa.s
Gasoline/ liquefied gas Kerosene Light diesel Crude oil, heavy oil Hi-viscosity
Liquid 		Liquid with high water content & super-high viscosity liquid
0.5% 0.2% 0.5% 0.2% 0.5% 0.2% 0.5% 0.2% 0.5% 0.2% 0.5% 0.2%
15 0.6-3   0.4-4   0.4-4   0.4-4   0.3-2.4   0.3-2.4   0.001
25 3-8   1.5-10   1-10   1-10   1-8   1-6    
0.01
 
40 8-20 8-20 2.7-22 5.5-22 2.5-25 4.4-22 2.5-25 4.4-22 2.1-18 4.2-18 1.5-12 3-12
50 9-36 15-36 4.5-36 9-36 4-40 7.2-36 4-40 7.2-36 2.8-24 6-24 2.2-18 4.5-18
80 20-80 32-80 10-80 20-80 9-90 16-80 9-90 16-80 6.5-56 14-56 5-40 10-40  
 
 
0.1
100 25-100 40-100 13-100 25-100 12-120 20-100 12-120 20-100 8.5-72 18-72 6.5-54 14-54
150 55-225 88-220 31-250 57-225 25-250 44-220 25-250 44-220 18-150 38-150 12-100 25-100
200 90-360 150-360 50-400 90-360 40-400 72-360 40-400 72-360 28-240 53-210 20-160 40-160
250 135-540 180-540 68-540 135-540 60-600 108-540 60-600 108-540 42-360 90-360 30-240 60-240
300 220-900 300-900 112-900 225-900 100-1000 180-900 100-1000 180-900 70-600 150-600 54-450 113-450
400 400-1600 550-1600 200-1600 400-1600 180-1800 320-1600 180-800 320-1600 130-1100 275-1100 90-750 180-750
Double-Rotator Flowmeter
Accuracy: 0.1%                                      Table.3
 
Nominal
Dia.
(mm) 		Flow range m3/h Pulse equivalent liter/pulse
0.32-2 mPa.s
 		 2-5 mPa.s 5-50mPa.s   500-400          mPa.s 400-2000 mPa.s 2000-20000 mPa.s
Gasoline/ liquefied gas Kerosene Light diesel Crude oil, heavy oil Hi-viscosity
Liquid 		Liquid with high water content & super-high viscosity liquid
40 11-22 9-22 7.5-22 7.5-22 7.5-22 4-12 3.3-10 0.001
50 18-36 14.4-36 12-36 12-36 12-36 7.5-22 6-18 0.01
80 40-80 32-80 26.7-80 26.7-80 26.7-100 16-48 13-40
100 50-100 40-100 34-100 34-100 34-100 24-72 18-54
150 115-220 90-220 73-220 73-220 73-220 40-120 30-90 0.1
200 180-360 144-360 120-360 120-360 120-360 60-180 50-150
250 270-540 216-540 180-540 180-540 180-540 100-300 60-180
300 450-900 360-900 300-900 300-900 300-900 200-600 150-450
400 800-1600 640-1600 530-1600 530-1600 530-1600 400-1200 300-900
Double-Rotator Flowmeter-(Electron Meter head)
Accuracy: 0.5%, 0.2%                                                   Table. 4

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Nominal
Dia.
(mm) 		Flow range m3/h Pulse equivalent liter/pulse
0.32-0.8mPa.s 0.8-2mPa.s 2-5mPa.s 5-4mPa.s 400-2000mPa.s 2000-20000mPa.s
Gasoline/ liquefied gas Kerosene Light diesel Crude oil, heavy oil Hi-viscosity
Liquid 		Liquid with high water content & super-high viscosity liquid
0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 0.5 0.2 0.01
8 0.06-0.3 0.10-0.3 0.05-0.3 0.07-0.3 0.03-0.3 0.06-0.3 0.03-0.3 0.06-0.3 0.03-0.27 0.06-0.27 0.03-0.24 0.06-0.24