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  • Gas Roots (waist wheel) flow meter

    Smart gas Roots (waist wheel) flow meter Intelligent gas waist wheel (Roots) flowmeter is a new generation flowmeter that integrates flow, temperature, and pressure detection functions, and can automatically compensate for temperature and pressure. Gas is a compressible fluid, and its volume value is closely related to temperature and pressure. In order to unify standards for both parties, it is necessary to convert the actual volume into a standard volume under reference conditions (101.325 kPa 20°C). In order to achieve this purpose, the smart gas waist wheel flowmeter can accurately correct the volume of gas; it is an ideal instrument for gas measurement in urban gas, petroleum, chemical, electric power, metallurgy and other industries. more

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    TUF Series Portable Ultrasonic Flow Meter The TUF series ultrasonic flow meter utilizes the principle of low voltage and multiple pulsation time difference, adopts the high-precision and ultra-stable differential transmission of double-balanced signals and differential receiving digital detection technology to measure the acoustic wave transmission time in both the downstream and counter-current directions, and calculates the flow rate according to the time difference.It has the characteristics of good stability, small zero drift, high measuring accuracy and high anti-interference of measuring range over wide. more

  • Intelligent Type Flow Meter

    LDB Intelligent Type Electromagnetic Flow Meter The LDB intelligent type electromagnetic flow meter consists of a sensor and a converter. It is based on Faraday's law of electromagnetic induction, which is used to measure the volume flow of conductive liquid with conductivity greater than 5μs/cm. It is an inductive meter for measuring the volume flow of conductive medium. In addition to measuring the volume flow of general conductive liquid, it can also be used to measure the volume flow of strong corrosive liquids such as strong acid and alkali and uniform liquid-solid two-phase suspension liquid such as slurry, pulp and paper pulp. more

  • Thermal Mass Gas Flow Meter

    LKQ Thermal Gas Mass Flow Meter LKQ thermal gas mass flow meter is a mass flow measurement and monitoring meter,which can detect  air, natural gas, hydrogen, oxygen, chlorine, nitrogen and ammonia, ammonia, coal gas, phosgene, flue gas and various chemical mixtures, without pressure and temperature compensation. It can be widely used in petroleum, chemical, metallurgy, electric power, water treatment, paper, food, medicine, cement, textile and various production, scientific research units for process control and gas flow measurement. Widely used in: flow measurement of steel plant, coking plant gas. more

  • Gas Flow Meter

    LLGQ Gas Roots /Waist Wheel Flow Meter The gas roots flowmeter has been used as a volumetric meter for more than 100 years.  With the features such as high precision, wide range, small volume, light weight, convenient installation and maintenance, reliable and durable service life, it is widely used in natural gas, coal gas, air and other gas flowmeters.It is an ideal flowmeter device for urban gas, oilfield chemical, scientific research and other departments at home and abroad. more

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  • Steam Gas Vortex Flow Meter

    LUGC Steam Gas And Liquid Insert Type Vortex Flow Meter The Insert Type vortex flowmeter is simple in structure and can be made into online installation type.Applicable to large diameter gas, steam flow measurement, etc.Easy installation, no pipe design. more

  • Vortex Flow Meter

    LUGB Flow Instrumentation Vortex Flow Meter The vortex flowmeter is a speed type flow instrument which has a wide range of uses. It is suitable for flow metering, measurement and control of liquids, steam and most gases. more

Smart gas Roots (waist wheel) flow meter

Intelligent gas waist wheel (Roots) flowmeter is a new generation flowmeter that integrates flow, temperature, and pressure detection functions, and can automatically compensate for temperature and pressure. Gas is a compressible fluid, and its volume value is closely related to temperature and pressure. In order to unify standards for both parties, it is necessary to convert the actual volume into a standard volume under reference conditions (101.325 kPa 20°C). In order to achieve this purpose, the smart gas waist wheel flowmeter can accurately correct the volume of gas; it is an ideal instrument for gas measurement in urban gas, petroleum, chemical, electric power, metallurgy and other industries.

  • Product Origin:

    China
  • Item NO.:

    HK
  • Shipping Port:

    Huangpu port
  • Color:

    silver and blue
  • Lead Time:

    3~5 Working Days
  • Payment:

    TT
  • MOQ:

    1
  • Price:

    $652/set
  • Market Price:

    $723
  • Price Range:

    1-5/652$
Product Details

Roots flow meter

■Use occasion

 This series of product gas waist wheel (Roots) flow meters are widely used in: city pipeline gas measurement, industrial gas measurement, gas pressure regulating station measurement, energy management and other non-corrosive gas measurement and live flow control, etc. Occasion: It has been exported to Southeast Asia, the Middle East, Russia, Pakistan and other countries, and the product performance has reached the domestic advanced level.

  ■ Feature 

Using advanced microcomputer technology and high-performance integrated chip, the whole machine has powerful functions and superior performance. The circuit adopts surface mounting technology, compact structure, strong anti-interference ability, high reliability, and meets the technical requirements of relevant international standards. Each product has undergone high and low temperature aging and flat disturbance tests. Pressure sensors, temperature sensors, and flow sensors are all built-in, making the structure more compact. Adopting advanced micro-power high-tech, the whole machine has low power consumption. It can run on long-term power supply with built-in battery, but also can run on external power supply. It can run for more than five years with built-in battery. It has fault self-diagnosis and alarm functions, high reliability, LCD display, clear and intuitive, and convenient reading. The instrument comes with a real-time database, through the RS-485 communication interface and the factory's special MODEM, it can form a telephone meter reading network, which is convenient for centralized data collection and real-time management; it can prevent data loss when the battery is replaced or sudden power failure. In the state, the internal parameters can be saved permanently. Display the flow value on the spot, and with a variety of signal output functions to meet the needs of different sites and systems. Use E2PROM data storage chip to save user parameters, manufacturer parameters and certain historical records. A high-contrast three-line LCD display can display the date, standard cumulative flow, standard instantaneous flow, medium temperature, pressure value and battery voltage. 


Product name: Smart gas Roots (waist wheel) flowmeter
Model specifications: HK15-G4 HK20-G6 HK25-G6
Nominal diameter: DN15 DN20 DN25
Flow range:
0.25m³h~6m³h
0.3m³h~10m³h
0.3m³h~16m³h
Nominal pressure: 0.6Mpa 1.6MPa
Output: 458 communication, pulse output
Display: instantaneous flow, accumulated flow, temperature/pressure
Intelligent temperature and pressure compensation

waist wheel flow meterGas roots flow meter


■Working principle

 The intelligent gas waist wheel flow meter is mainly composed of a shell, a conjugate rotor, a counter and an intelligent flow totalizer. A pair of conjugate rotors installed in the measuring chamber are under the action of the pressure difference between the inlet and outlet of the circulating gas (Pin>Pout), and the rotors are kept in the correct relative position through precision-machined adjustment gears. The best working gap is maintained between the rotor, between the rotor and the shell, and between the rotor and the wall plate, realizing continuous non-contact sealing. Each rotation of the rotor will output four times the effective volume of the metering chamber. The number of rotations of the rotor will be transmitted to the intelligent flow totalizer through the magnetic seal coupling and deceleration mechanism, thereby displaying the cumulative volume of the output gas. The measurement process and working principle are shown in Figure 1 (only a quarter cycle is shown in the figure).

Working principle 1Working principle 2        Working principle 3Working principle 4

■ The structure of the flow meter

 According to the principle of electromagnetic induction, the Wiegand sensor is used to induce a pulse signal proportional to the flow and volume flow from the magnetic steel installed on the synchronously rotating gears. The signal is amplified, filtered, and shaped together with the temperature and pressure sensor signals. Enter the micro-processing unit of the intelligent flow totalizer to perform arithmetic processing, and directly display the volume flow and total volume of the gas on the LCD screen. The mechanism is shown in Figure 2.

Gas roots flow meter

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