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LLT Helical Rotor Flowmeter

Current location:Home page -> Product -> Liquid Flowmeter

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■Product Introduction
Helical rotor flowmeter is the new generation of positive displacement flowmeter. A pair of rotors with special tooth profile rotates smoothly with low noise and no pulsation. With high precision, high reliability, large flowrate and outstanding adaptability to environment, LLT flowmeter is widely used in trading measurement and engineering management control in various industries including petrochemistry、metallurgy、electronics and dock. Working with GF transmitter, the flowmeter gives out electric pulse signal which is used for remote totalizing display or control. Working with MF transmitter, the flowmeter gives out 4~20mA analog signal which is used for remote transient flowrate display or flowrate control.

In order to meet the needs of the market and customers, exquisite instrument introduced a variety of models of spiral double-rotor flowmeter, can be achieved on-site display or remote transmission of a variety of functions. Dual rotor flowmeter and GF transmitter supporting the use of output electrical pulse signal for remote integration instructions or control. And MF transmitter supporting the use of output flow analog 4 ~ 20mA signal, the remote instantaneous flow indicator or flow control and control. Exquisite double-rotor flowmeter, the factory has been a comprehensive quality inspection and precision test to ensure the use of the process of security and accuracy of reading, welcomed the new and old customers consulting cooperation.

■ Relevant standards and certification
Implementation of product standards:JB/T9242-1999《General technical conditions for volumetric flowmeter》;Q/JD2004-2010《Liquid volume flowmeter》.

Measurement equipment production license:AnHui Province No 01000018.
Remote output when the explosion-proof mark:ExiaⅡCT5,dⅡCT6

Flange standard:GB/T9113.1-2000
Protection class:TransmitterIP65;speeder、counterIP66

■Product appearance display



■Measurement expertise
★spiral rotor in the measurement chamber constant speed rotation, such as flow.
★smooth operation, low noise.
★flow, the pressure loss is small.
★spiral rotor constant speed rotation, fluid pulsation small.
★sent pulse stable and accurate.
★You can configure a variety of counters, governors and external tuners.
★can be installed vertically (limited to DN200 caliber below, when ordering need to explain)


■ Technical parameters
One. Main component material and nominal pressure

Model

shell、front cover、back cover

Cover plate

Helical Rotor

axle

axle sleeve

Nominal diameter(MPa)

LLT-E

cast steel

cast iron

cast iron、aluminium alloy
、stainless steel

stainless steel

graphite
antifriction bearing

Below DN100  4.0MPa

Above DN150  2.5MPa

LLT-B、C Stainless steel

Stainless steel

stainless steel

1.6MPa、2.0MPa、2.5MPa

LLT-S

Double body flowmeter;DN80,DN100,DN150;6.3MPa,DN200 nominal diameter 4.0MPa

Note

the texture of LLT-C stainless steel flowmeter is OCr18Ni12Mo2Ti;the texture of LLT-B stainless steel flowmeter is OCr18Ni9Ti;special requirements also can be designed.


two.Accuracy class:grade 0.5,grade 0.2
three.repeatability error:Flowmeter repetitive error is not more than 1/3 of the absolute flow meter basic error limits.
four.Using the medium temperature:environment temperature(-41℃~+50℃) grade 0.5(-20℃~+80℃)  grade 0.2(-20℃~+60℃)
Add heat radiator of up to 250 ℃.

■Flow range(m³/h) as the following below
Table one,Accuracy grade 0.5

Model caliber viscosity(mPa.s)
0.3~0.8 0.8~2 2~15 15~400 400~1000 1000~2000 2000~3500
Gasoline kerosene diesel、engine oil Mazout high viscosity liquid
LLT-0252 25 3~9 1.5~10 1~10 1~10 1~8 1~8 1~6
LLT-0401 40 3~9 1.5~10 1~10 1~10 1~8 1~8 1~6
LLT-0402 7~20 3~22 2.5~25 2.5~25 2~18 2~18 3~12
LLT-0501 50 7~20 3~22 2.5~25 2.5~25 2~18 2~18 3~12
LLT-0502 9~36 4.5~36 3.6~36 3.6~36 2.8~25 2.8~25 4.5~18
LLT-0801 80 9~36 4.5~36 3.6~36 3.6~36 2.8~25 2.8~25 4.5~18
LLT-0802 20~80 10~80 10~100 10~100 6.5~56 6.5~56 5~40
LLT-1001 100 20~80 10~80 10~100 10~100 6.5~56 6.5~56 5~40
LLT-1002 25~100 18~100 15~150 15~150 8.5~80 8.5~80 6.5~55
LLT-1501 150 25~100 18~100 15~150 15~150 8.5~80 8.5~80 6.5~55
LLT-1502 55~225 30~250 25~250 25~250 18~150 18~150 10~100
LLT-2001 200 55~225 30~250 25~250 25~250 18~150 18~150 10~100
LLT-2002 90~360 50~400 40~400 40~400 28~240 28~240 20~160
LLT-2501 250 90~360 50~400 40~400 40~400 28~240 28~240 20~160
LLT-2502 130~540 65~540 60~600 60~600 42~360 42~360 30~240
LLT-3001 300 130~540 65~540 60~600 60~600 42~360 42~360 30~240
LLT-3002 220~800 110~900 95~950 95~950 70~600 70~600 54~450
LLT-3501 350 220~800 110~900 95~950 95~950 70~600 70~600 54~450

Table two, accuracy grade 0.2
Model caliber viscosity(mPa.s)
0.3~0.8 0.8~2 2~15 15~400 400~1000 1000~2000 2000~3500
Gasoline kerosene diesel、engine oil Mazout high viscosity liquid
LLT-0252 25 3.5~8 3~10 2~10 2~10 2~8 2~8 2~6
LLT-0401 40 3.5~8 3~10 2~10 2~10 2~8 2~8 2~6
LLT-0402 8~20 5.5~22 4.5~22 4.5~22 4~18 4~18 3~12
LLT-0501 50 8~20 5.5~22 4.5~22 4.5~22 4~18 4~18 3~12
LLT-0502 15~36 9~36 7~36 7~36 6~25 6~25 4.5~18
LLT-0801 80 15~36 9~36 7~36 7~36 6~25 6~25 4.5~18
LLT-0802 30~80 20~80 15~80 15~80 14~56 14~56 10~40
LLT-1001 100 30~80 20~80 15~80 15~80 14~56 14~56 10~40
LLT-1002 40~100 25~100 20~120 20~120 18~72 18~72 14~55
LLT-1501 150 40~100 25~100 20~120 20~120 18~72 18~72 14~55
LLT-1502 88~220 57~225 44~220 44~220 38~150 38~150 25~100
LLT-2001 200 88~220 57~225 44~220 44~220 38~150 38~150 25~100
LLT-2002 150~360 90~360 72~360 72~360 50~210 50~210 40~160
LLT-2501 250 150~360 90~360 72~360 72~360 50~210 50~210 40~160
LLT-2502 180~540 135~540 100~540 100~540 90~360 90~360 60~240
LLT-3001 300 180~540 135~540 100~540 100~540 90~360 90~360 60~240
LLT-3002 250~800 220~900 180~900 180~900 150~600 150~600 110~450
LLT-3501 350 250~800 220~900 180~900 180~900 150~600 150~600 110~450
Note:Special requirements, can provide 0.3, 0.1 flow meter


■performance(Error and pressure loss curves)


■Helical Rotor Flowmeter Product Mark
    state
type model LLT- Helical Rotor Flowmeter
Special mark S Double body flowmeter
U With insulation jacket
T1、T2 Thermal zone cooling tube
P Nuclear power products
PI Nuclear seismic products
Special flange 1 Flange expansion mouth
2 flange standard
material mark shell E cast steel
B/C stainless steel
rotor A cast iron
B/C stainless steel
L Aluminum alloy
Nominal diameter 25mm............300mm Nominal diameter from 25mm.............300mm
speeder GF3 External fine adjustment device
Nominal pressure .2 Nominal pressure 1.6MPa
.3 Nominal pressure 2.5MPa
.4 Nominal pressure 4.0MPa
.6 Nominal pressure 6.3MPa
counter A5 Mechanical pointer counter
A6 back to zero counter
BELZ Electronic digital display counter
M1 Big word counters back to zero
sender unit GF-Ⅰ 12V Three wire system photoelectric transmitter
GF-Ⅱ 24V Three wire system photoelectric transmitter
MF 4-20mA Analog output transmitter
Accuracy .J high accuracy flowmeter grade 0.2

■Order instructions
Please specify the following order
The name of the measured medium:
Flow range(m³/h):minimum、common use、maximum
medium temperature(℃):minimum、common use、maximum
Medium viscosity(mPa.s):at()℃
fluid pressure(MPa):Minimum, commonly used, the highest
Medium density:
caliber(mm):
Flange requirements:
Accuracy requirements:
Transmitter configuration requirements:
Other special requirements。