Lsz Series Double Rotator Flowmeter for Measuring Oil

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.
                                                        
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

                                             

                                                       

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

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
15A	0.2-0.8	0.27-0.8	0.1-1	0.2-1	0.1-1.5	0.1-1	0.1-1.5	0.1-1	0.1-0.8	0.16-0.8	0.08-0.7		0.15-0.7
15B	0.25-1	0.33-1	0.25-1.5	0.25-1	0.25-3	0.3-3	0.3-3	0.4-3	0.1-1.5	0.2-1.5	0.1-1.2		0.2-1.2
25	1.5-6	2-6	1.2-6	1.5-6	0.6-10	1.2-10	0.6-10	1.2-10	0.6-6	1.2-6	0.6-5		1.2-5		0.1

Double-Rotator Flowmeter-St. steel (-20°C ~ +80°C)
Accuracy: 0.5% and 0.2%                             Table.5

Nominal Dia. (mm)	Range of flow m3/h												Pulse equivalent liter/pulse
	0.32-0.8 mPa.s		0.8-2 mPa.s		2-5 mPa.s		5-400 mPa.s		400-2000 mPa.s		2000-20000 mPa.s
	Gasoline/ liquefied gas		Kerosene		Light diesel, 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	0.75-3		0.75-3		0.6-3		0.6-3		0.6-3		0.5-2.5		0.001
25	2-8		2-8		1.6-8		1.6-8		1.2-6		1-5
40	6-24	8-24	6-24	8-24	4.8- 24	6-24	4.8- 24	6-24	3.6- 18	4-16	2.4- 12	2.5-10	0.01
50	9-36	12-36	9-36	12-36	7.2- 36	9-36	7.2- 36	9-36	4.8- 24	5.5- 22	3.6- 18	4-16
80	20-80	27-80	20-80	27-80	16-80	20-80	16-80	20-80	12-56	12-48	8-40	9-36	0.1
100	25- 100	34- 100	25- 100	34- 100	20- 100	25- 100	20- 100	25- 100	15-75	15-60	11-54	11-45
150	55- 220	75- 220	55- 220	75- 220	45- 220	55- 220	45- 220	55- 220	30- 150	35- 135	20- 100	23-90
200	90- 360	120- 360	90- 360	120- 360	72- 360	90- 360	72- 360	90- 360	43- 210	50- 200	32- 160	38-150
250	135- 540	180- 540	135- 540	180- 540	108- 540	135- 540	108- 540	135- 540	72- 360	90- 360	48- 240	60-240
300	225- 900	300- 900	225- 900	300- 900	180- 900	225- 900	180- 900	225- 900	120- 600	150- 600	90- 450	113-450

Double-Rotator Flowmeter-St. steel high temp. type (+80°C ~ +150°C)
Accuracy: 0.5, 0.2                                Table.6

Nominal Dia. (mm)	Range of flow m3/h										Pulse equivalent liter/pulse
	2-5 mPa.s		5-50 mPa.s		50-400 mPa.s		400-2000 mPa.s		2000-20000 mPa.s
	Light diesel		Crude oil, heavy oil		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
40	5.6- 22.5	7-20	5.6- 22.5	7-20	5.6- 22.5	7-20	4-15	4-12	3-12	3.5-10	0.01
50	9-36	10-32	9-36	10-32	9-36	10-32	4.5-22	7-20	4.5-18	6-18
80	20-80	25-75	20-80	25-75	20-80	25-75	12-48	13-40	9-36	10-30	0.1
100	25- 100	30-90	25- 100	30-90	25- 100	30-90	15-60	17-50	11-45	14-40
150	45- 220	75- 220	45- 220	75- 220	45- 220	75- 220	35- 135	34- 100	23-90	27-80
200	90- 360	120- 360	90- 360	120- 360	90- 360	120- 360	50- 200	54- 160	38-150	43-130
250	135- 540	180- 540	135- 540	180-5 40	135- 540	180- 540	90- 360	120- 360	60-240	80-240
300	225- 900	300- 900	225- 900	300- 900	225- 900	300- 900	150- 600	200- 600	113-450	150-450

Double-Rotator Flowmeter-St. steel high temp. type (+150°C ~ +250°C)
Accuracy: 0.5% and 0.2%                       Table.7

Nominal Dia. (mm)	Range of flow m3/h										Pulse equivalent liter/pulse
	2-5 mPa.s		5-50 mPa.s		50-400 mPa.s		400-2000 mPa.s		2000-20000 mPa.s
	Light diesel		Crude oil, heavy oil		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
40	7.5-22.5	10-20	7.5-22.5	10-20	7.5-22.5	10-20	5-15	6-12	4-12	5-10	0.01
50	12-36	16-32	12-36	16-32	12-36	16-32	7.5- 22.5	10-20	6-18	9-18
80	26.7-80	35-75	26.7-80	35-75	26.7-80	35-75	16-48	20-40	12-36	15-30	0.1
100	34- 100	45-90	34- 100	45-90	34- 100	45-90	20-60	25-50	15-45	20-40
150	75- 220	110- 220	75- 220	110- 220	75- 220	110- 220	45-135	50-100	30-90	40-80
200	120- 360	180- 360	120- 360	180- 360	120- 360	180- 360	65- 200	80- 160	50- 150	65-130

 

Double-Rotator Flowmeter-Carbon steel high temp. type (+150°C ~ +250°C)
    Accuracy: 0.5, 0.2                                 Table.8

Nominal Dia. (mm)	Range of flow m3/h										Pulse equivalent liter/pulse
	2-5 mPa.s		5-50 mPa.s		50-400 mPa.s		400-2000 mPa.s		2000-20000 mPa.s
	Light diesel		Crude oil, heavy oil		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
40	4.5-22.5	5.6-22.5	4.5-22.5	5.6-22.5	4.5-22.5	5.6-22.5	4.2-18	5-15	3-12	4-12	0.01
50	7.2-36	9-36	7.2- 36	9-36	7.2- 36	9-36	6-24	7.5- 22.5	4.5- 18	5.5-17.5
80	16-80	20-80	16-80	20-80	16-80	20-80	14-56	16-48	10-40	12-36	0.1
100	20-100	25-100	20-100	25-100	20-100	25-100	18-72	20-60	14-54	16-48
150	45-220	55-220	45-220	55-220	45-220	55-220	38-150	45-135	25-100	30-90
200	72-360	90-360	72-360	90-360	72-360	90-360	53-210	65-200	40-160	50-150
250	108-540	135-540	108-540	135-540	108-540	135-540	72-360	90-360	60-240	80-240
300	180-900	225-900	180-900	225-900	180-900	225-900	120-600	150-600	113-450	150-450

Note: The flowmeter is also suitable for interim measurement during installing/uninstalling and ship installing.

Applications:




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