LL Roots Flowmeter
Product photos
Product introduction
LL Roots flowmeter is a positive displacement flowmeter. With novel design, elegant shape and reasonable structure, LL is a lightweight flowmeter which is easy to install and operate. It is widely used for high accuracy oil measurement in petrochemical industry, electrical industry, metallurgy industry, transportation, national defense and commercial trade. The product is novel in design, beautiful in appearance and reasonable in structure. The fine LL type roots flowmeter is characterized by light weight, high precision, easy installation and so on. It is widely used in petrochemical, electric power, metallurgy, transportation, defense and commerce.
Exquisite LL type roots flow meter, composed of two parts by the shell and the counter, the customer can choose according to the specific measurement medium for their own roots flowmeter products. Exquisite brand roots flow meter can be configured pointer counter and electronic digital display counter, field display can also remote control.
Product standards and license
This product to perform professional standards of the People’s Republic of China JB/T9242-1999 《General technical conditions of volumetric flowmeter
Far eastone display field
Explosion-proof grade: ExiaII CT6, dII CT6
Protection grade: IP66
Adaptation scope
LL-AL type cast iron roots flowmeter is widely used in all kinds of products and materials of cast iron and the measurement of corrosion liquid medium.
LL-EL type cast steel waist wheel flow meter is used for the measurement of high pressure, low corrosive medium.
LL-LL type cast aluminum light waist wheel flowmeter is suitable for low viscosity, low pressure, low corrosion (such as water, etc.) measurement of the medium.
Technical parameters
Working Pressure (MPa): 0.6MPa, 1.0MPa, 1.6MPa, 2.5MPa, 4.0MPa
Working Temperature (℃): LL-A type roots flowmeter (-20~+60) ℃, LL-E、L type roots flowmeter (-41~+60)
Accuracy class: 0.5, 0.3, 0.2
Flow range (m³/h) as the following shown
| Nominal Diameter (mm) | liquid viscosity (mPa.s) | liquid viscosity (mPa.s) | liquid viscosity (mPa.s) | liquid viscosity (mPa.s) | liquid viscosity (mPa.s) | liquid viscosity (mPa.s) | Comment |
|---|---|---|---|---|---|---|---|
| 2.0-150 | 0.6-2.0 | 2.0-150 | 0.6-2.0 | 2.0-150 | 0.6-2.0 | ||
| 25 | 0.6-6 | 1.2-6 | 1.2-6 | 1.5-6 | 1.5-6 | 2-6 | |
| 40 | 1.6-16 | 3.2-16 | 3.2-16 | 4-16 | 4-16 | 5-16 | |
| 50 | 2.5-25 | 5-25 | 5-25 | 6-25 | 6-25 | 8-25 | some details please contact us |
| 80 | 6-60 | 12-60 | 12-60 | 15-60 | 15-60 | 20-60 | |
| 100 | 10-100 | 20-100 | 20-100 | 25-100 | 25-100 | 33-100 | |
| 150 | 25-250 | 50-250 | 50-250 | 60-250 | 60-250 | 80-250 | |
| accuracy class | 0.5 | 0.3 | 0.2 |
The major component material and the nominal pressure in the following table
| Model | shell, front cover, rear cover | cover board | roots rotor | axle | axle sleeve | nominal Pressure(MPa) |
|---|---|---|---|---|---|---|
| LL-AL | cast iron | cast iron | aluminium alloy | stainless steel | ball bearing | 0.6, 1.0, 1.6 |
| LL-EL | cast steel | cast iron | aluminium alloy | stainless steel | ball bearing | 2.5, 4.0 |
| LL-LL | ball bearing | cast iron/stainless steel | aluminium alloy | stainless steel | ball bearing | 0.6, 1.0, 1.6 |
comments/Special contract can special design
LL type roots flowmeter product labeling
| Type code | Explain | |
|---|---|---|
| LL- | roots flowmeter | |
| Special form | G | Pipe thread connection |
| Q | Measuring gas flowmeter | |
| T2 | high temperature flowmeter with radiator | |
| Material mark | shell: A | cast iron |
| E | cast steel | |
| L | Aluminum alloy material | |
| rotor: L | Aluminum alloy material | |
| Z | Cast material | |
| B | stainless steel | |
| Nominal Diameter (mm) | 25…….150 | Nominal Diameter from 25mm to 50mm |
| special requirements | I | Modified products |
| II | Magnetic sealing mechanism | |
| nominal pressure | 06 | 0.6MPa |
| 1 | 1.0MPa | |
| 2 | 1.6MPa | |
| 3 | 2.5MPa | |
| 4 | 4.0MPa | |
| counter | A5 | Mechanical pointer counter |
| A6、Z | Back to zero counter | |
| M11 | Square big word counter | |
| M12 | 90°Square big word counter | |
| D/D1/D2 | Electronic digital display counter | |
| S1 | With mechanical transient flow display | |
| Transmitter | GF-I | 12V Three wire system photoelectric pulse transmitter |
| GF-II | 24V Three wire system photoelectric pulse transmitter | |
| MF | 4-20mA Analog output transmitter | |
| Accuracy | J | More than class 0.3 |
Special Note
Especially the mainly for special products, some of the logo, demand appears behind the product number in order to show the difference.
Such as product number: 1108052L A It means the flowmeter can be installed in a vertical
For example: LL-LL8011.1M1S1 GF-II
LL-LL means cast aluminum roots flowmeter, nominal diameter DN80, modified products nominal pressure 1.0MPa, Square big word counter with instantaneous flow display, 24v photoelectric pulse transmitter
Note: The description may be different with the product, please contact us for quotation.
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