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    HomeProductsLiquid Flow MeterHigh precision and digitalization Dual Rotor Flowmeter

      High precision and digitalization Dual Rotor Flowmeter

      1.Dual rotor flowmeter is a high-precision measuring instrument used for continuous measurement of liquid flow in pipelines.
      2.Dual rotor flowmeter has many advantages such as no pulsation, extremely low noise, high accuracy, high reliability, large range range, small pressure loss, strong viscosity adaptability, ability to measure high temperature and high viscosity liquids, convenient calibration, and easy installation.
      Accuracy class： class 0.5, class 0.2
      Ambient temperature: -40℃~60℃
      Medium temperature: －20℃～+60℃（High temperature radiator can reach up to 250 ℃）.
      Signal output: 4-20mA analog signal, pulse signal, RS485, HART, etc. are available for selection.
      Explosion proof sign: Exd IIC T6 Gb，Exdb IIC T6 Gb
      protection grade: IP66
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    Principle structure:

    The LLT series dual rotor flowmeter consists of a flow transmitter and a counter. The main part of the transmitter is a metering device equipped with a pair of special toothed spiral rotors.

    The measuring chamber mainly has a sealed cavity composed of a pair of special rotors and cover plates as the measuring unit of flow. The rotor is driven by the pressure difference at the inlet and outlet of the flowmeter to rotate, continuously measuring the liquid at the inlet through the sealing chamber and sending it to the outlet. The amount of liquid flowing through each rotation is eight times that of the sealing chamber shown in the figure. The total number of rotations of the rotor and the speed of rotation are transmitted to the counting mechanism by the sealing coupling, and the pointer display and word wheel accumulation can be used to determine the total amount of liquid passing through the pipeline. In the counting mechanism, a pulse transmitter can also be installed, which becomes a flow meter with a transmitter.

    It is matched with our company’s electronic display instrument and can achieve remote transmission (quantitative, cumulative, instantaneous and other functions) for automated measurement and control. Please refer to the classification instructions for display instruments for usage instructions.

    Technical Parameter:

    1.Accuracy class：0.5、0.2

    2.Medium temp：－20℃～+60℃（High temperature radiator can reach up to 250 ℃）

    3.Environment temp：

    Electronic counter (Std configuration)：－30℃～+60℃

    Electronic counter (optional)：－43℃～+60℃

    4.Signal output: selectable from 4 to mA analog signal, pulse signal, RS485, and Hart

    5.Ex sign：ExdⅡCT6、ExiaⅡCT6

    6.Ingress Protection：IP66

    7.Flange Std：GB/T9124.1（Please communicate with the manufacturer for other standards）

    8.Repetitive error：The repeatability error of the flow meter shall not exceed one-third of the absolute value of the basic error limit of the flow meter    

    9.Flow range:m3/h,class 0.5                        

    TypeDNViscosity mPa.s
      0.3~0.80.8~22~1515~400400~10001000~20002000~3500
      GasCoal oilDiesel oilHeavy oilHigh viscosity liquid
    LLT-0252253~91.5~101~101~101~81~81~6
    LLT-0401403~91.5~101~101~101~81~81~6
    LLT-0402 7~203~222.5~252.5~252~182~183~12
    LLT-0501507~203~222.5~252.5~252~182~183~12
    LLT-0502 9~364.5~363.6~363.6~362.8~252.8~254.5~18
    LLT-0801809~364.5~363.6~363.6~362.8~252.8~254.5~18
    LLT-0802 20~10015~11012~1208～1205~655~475~40
    LLT-100110020~10015~11012~1208～1205~655~475~40
    LLT-1002 28~16020~16017~18015~1808~957~657~55
    LLT-150115028~16020~16017~18015~1808~957~657~55
    LLT-1502 50~25040~25030~27020~27012~16010~1108~90
    LLT-200120050~25040~25030~27020~27012~16010~1108~90
    LLT-2002 90~36050~40040~40040~40028~24028~24020~160
    LLT-250125090~36050~40040~40040~40028~24028~24020~160
    LLT-2502 130~540065~54060~60060~60042~36042~36030~240
    LLT-3001300130~540065~54060~60060~60042~36042~36030~240
    LLT-3002 220~800110~90095~95095~95070~60070~60054~450
    LLT-3501350220~800110~90095~95095~95070~60070~60054~450

    Flow range:m3/h,class 0.2

    TypeDNViscosity mPa.s
    0.3~0.80.8~22~1515~400400~10001000~20002000~3500
    GasCoal oilDiesel oilHeavy oilHigh viscosity liquid
    LLT-0252253.5~83~102~102~102~82~82~6
    LLT-0401403.5~83~102~102~102~82~82~6
    LLT-04028~205.5~224.5~224.5~224~184~183~12
    LLT-0501508~205.5~224.5~224.5~224~184~183~12
    LLT-050215~369~367~367~366~256~254.5~18
    LLT-08018015~369~367~367~366~256~254.5~18
    LLT-080220~8015~8012~1008～1006~555~405~35
    LLT-100110020~8015~8012~1008～1006~555~405~35
    LLT-100228~11020~11017~15015~1508~808~557~45
    LLT-150115028~11020~11017~15015~1508~808~557~45
    LLT-150250~18040~18030~25020~25012~13012~10012~85
    LLT-200120050~18040~18030~25020~25012~13012~10012~85
    LLT-2002150~36090~36072~36072~36050~21050~21040~160
    LLT-2501250150~36090~36072~36072~36050~21050~21040~160
    LLT-2502180~540135~540100~540100~54090~36090~36060~240
    LLT-3001300180~540135~540100~540100~54090~36090~36060~240
    LLT-3002250~800220~900180~900180~900150~600150~600110~450
    LLT-3501350250~800220~900180~900180~900150~600150~600110~450

    Note : accuracy class could be more high for special requirement.

    Special instructions:

    Mainly for some identification of special products. It is required to appear after the product number to indicate differentiation. Example product number: 1108052 LA.

    Indicates that the flowmeter can be installed vertically.

    MIHGSHSMASJS
    Military industryChemical industryPetrochemical industryMarine useAmerican StdJapanese Std

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