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ESMGRF Electronic digital explicit lumbar gear gas flow meter

The gas Roots flow meter, also known as the lobe flow meter, is a high-precision volumetric measuring instrument. It relies on a pair of intermeshing figure-eight lobes to divide the gas into fixed-volume chambers for accurate measurement, and is widely used for measuring the flow of clean gases such as natural gas, coal gas, nitrogen, and compressed air.

This flow meter features high measurement accuracy, a wide range ratio, and low starting flow. It is not affected by flow velocity distribution and does not require straight pipe sections upstream or downstream, making installation convenient. Equipped with temperature and pressure compensation functions, it can automatically convert operating volume to standard volume for more accurate measurement. It offers pulse, 4-20mA, RS485 and other signal outputs, supporting remote transmission and intelligent monitoring.

With a compact structure, stable operation, and moderate pressure loss, it is suitable for urban gas, industrial and commercial boilers, chemical industry, energy management, and other applications, especially for trade settlement and precise measurement. It is highly reliable for long-term use and easy to maintain, making it one of the mainstream devices for gas measurement in industrial and gas sectors.

    Working Principle

    The core component of a gear flow meter is a pair or multiple pairs of intermeshing gears installed in a fluid-filled measuring chamber. When the fluid enters the measuring chamber, it drives the gears to rotate. Each rotation of the gears transfers a fixed volume of fluid from the inlet to the outlet. By recording the number of gear rotations with sensors (such as magnetic or photoelectric sensors) and combining this with the fixed displacement, the total flow and instantaneous flow can be calculated.

    Product Features

    1. The liquid crystal digital display is clear and straight
    2. Simple operation, single measurement can be zeroed
    3. Accurate metering
    4. Explosion-proof is safe and reliable
    5. The alloy material is strong and durable
    6. Suitable for a wide range of media
    7. Flexible and easy installation

    Product detail

    Product detail-2Product detail-1Product detail-4Product detail-5ESMGRF-Product detail-3

    Technical Specifications

    Name

    Low pressure LCD digital pipeline gas roots flowmeter

    type

    ESMGRF-L-DN15

    Accuracy: 

    Class 1.5

    Nominal diameter: 

    DN15

    Flow range: 

    0.3~6m3/h

    Maximum pressure: 

    0.3Mpa

    Ambient temperature: 

    -40~60°C

    Medium temperature: 

    -20~80 °C

    Protection certificate: 

    CNEx19.6284x

    Ex mark: Exia ii T4 Ga

    Ex mark: Exia ii T4 Ga

    Measurable medium

    natural gas, air and other non-corrosive gases.

    note

    Matching filter connector

    Name

    High Pressure LCD Digital Gas Roots Flow Mete

    Accuracy: 

    Class 1.5

    Nominal diameter:

    DN15

    DN20

    DN25

    TYPE

    ESMGRF-H-DN15

    ESMGRF-H-DN20

    ESMGRF-H-DN25

    Flow range: 

    0.3~16m3/h

    0.3~16m3/h

    0.3~16m3/h

    Output

    A: No display RS485 pulse output

    B: LCD display no output

    C: LCD display RS485 pulse signal output

    Starting flow: 

    0.08m3/h

    0.08m3/h

    0.08m3/h

    Maximum pressure: 

    ≤1Mpa/10kg

    Ambient temperature: 

    -40~60°C

    Medium temperature: 

    -20~80 °C

    Protection certificate: 

    CNEx19.6284x

    Ex mark: 

    Exia ii T4 Ga

    Measurable medium

    natural gas, air and other non-corrosive gases.

    Name

    Mechanical gas roots flow meter

    Accuracy: 

    Class 1.5

    Nominal diameter: 

    DN15                                                                  

    DN20 

     DN25

    TYPE

    ESMGRF-G6-DN15    

    ESMGRF-G6-DN20   

    ESMGRF-G6-DN25

    Flow range:

     0.3~10m3/h

    Starting flow: 

    QSTAR≥0.08m3/h

    Output: 

    No output for mechanical readings

    Maximum pressure: 

    ≤50KPA

    The watch body material: 

    aluminum alloy

    Connection method: 

    female thread

    Installation method: 

    vertical or horizontal installation

    Number of display digits: 

    8 digits

    Note:

     Matching filter connector

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