Rroots Gas Meter is a meter that accurately measures gas flow. Based on the principle of volumetric measurement. It is an ideal natural gas and gas flow meter.

Rroots Gas Meter

The flowmeter is composed of two parts: Roots flow sensor and display instrument. It is suitable for measuring non-corrosive gases such as natural gas, city gas, propane, nitrogen, and industrial inert gases. Mainly used in a gas commercial settlement in catering, hotels, and other industries. It can also be used as a standard flow meter.

Sino-Inst offers a variety of Oval Gear Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.

Features of Rroots Gas Meter

  1. High degree and good repeatability. The internal rotor is precision machined and balanced and tested, and it rotates without contact. Good oil lubrication ensures that the accuracy of the flowmeter remains unchanged and the working life is long.
  2. There is no need for straight pipes before and after the flowmeter, so it can be installed in a narrow environment.
  3. The starting flow is small and the range ratio is wide, which is suitable for measuring the gas flow with large changes.
  4. The measurement degree is not affected by pressure and flow changes, with stable performance and long life.
  5. Good versatility, all Roots flow sensors can use universal accessories.
  6. Configure RS-485 communication interface and IC card dedicated signal concentrator. It can also form a remote data acquisition machine monitoring system through GPRS/CDMA, internet and telephone network. It is convenient for centralized data collection and real-time management.
  7. The circuit adopts surface mount technology. Compact structure, strong anti-interference ability and high reliability.
  8. Adopt high-performance microprocessor and modern digital filtering technology. The software has powerful functions and superior performance.
  9. It adopts floating point calculation and five-segment meter coefficient automatic correction, and has fault self-diagnosis and alarm functions.
  10. Using micro-power high-tech, internal and external power supply to work. The power consumption of the whole machine is low, and it can work continuously for more than five years with only a 2#3.6VDC lithium battery.
  11. The flow value is displayed on the spot, with multiple signal output functions.
  12. A high-contrast liquid crystal display is used. It can display the standard cumulative flow, standard volume flow, working condition volume flow percentage, medium temperature, pressure value and battery consumption percentage.
  13. With real-time data storage function.
  14. The protection grade of the flowmeter housing is IP65.
  15. The explosion-proof mark is ExibllCT4.

Extended reading: Gas Mass Flow Meter

Specifications of Rroots Gas Meter

Executive standardMeasurement of gas flow in closed pipelines—”Gas Lumbar Flowmeter” (JB/T7385-94)
Caliber and connection method25, 40, 50, 65, 80, 100, 125, 150, 200, 250 are flanged
Accuracy class±1.5%R (±1%R needs to be specially made)*
Instrument materialBody: cast aluminum or cast iron; rotor: high-quality aluminum alloy; converter: cast aluminum
Conditions of UseMedium temperature: -10℃~+60℃ Ambient temperature: -30℃~+60℃;
Relative humidity: 5%~90% Atmospheric pressure: 86~106KPa
Power supplyA. External power supply: +24VDC±15%, ripple ≤±5%, suitable for 4-20mA output, pulse output, RS485, etc.
B. Internal power supply: 1 3.6VDC lithium battery, when the voltage is lower than 2.0, an undervoltage indication will appear.
Whole machine power consumptionA. External power supply: <1W;
B. Internal power supply: average power consumption ≤1W, can be used continuously for more than three years.
Output signalPulse signal, 4 ~ 20mA current signal, IC card control signal
Communication outputRS485 communication
Real-time recordingStart-stop record, daily record, fixed time interval record
Signal line interfaceInternal thread M20×1.5 or others
Explosion-proof gradeExibIICT4
Protection levelIP65

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Rroots Gas Meter Working Principle

Rroots Gas Meter structure

The flow meter is composed of two parts: Roots flow sensor and display instrument.

  1. End cover I
  2. Magnetic coupler
  3. Gland I
  4. Shell
  5. Waist wheel assembly
  6. Gland II
  7. Bearing
  8. End cover Ⅱ
  9. Synchronous gear
  10. Oil sling
  11. Oil cavity

The working principle of gas Roots flowmeter

Gas Roots flowmeter is a positive displacement flow meter.

When the gas passes through the flow meter, the pressure difference generated between the inlet and the outlet acts on a pair of waist wheels connected with high-precision synchronous gears to drive the waist wheels to rotate.

The working principle of gas Roots flowmeter

During this period, the enclosed space formed between the waist wheel and the inner wall of the housing and the gland is periodically inflated and exhausted by a metering chamber. The speed of the waist wheel is proportional to the volume of gas passing through the flow meter.

The rotation of the waist wheel is transmitted to the mechanical counter or output flow pulse signal through the magnetic coupler, so as to accumulate the volume flowing through the metering cavity to achieve the purpose of metering.

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Sino-Inst, Manufacuturer for Rroots Gas Meters. For example: crude oil flowmeter, diesel flowmeter, gasoline flowmeter.

Sino-Inst’s Rroots Gas Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.

Rroots Gas Meter for Sale | Ideal natural gas flow meter

Rroots Gas Meter is a meter that accurately measures gas flow. Based on the principle of volumetric measurement. It is an ideal natural gas and gas flow meter.

Product SKU: Rroots Gas Meter

Product Brand: Sino-Inst

Product Currency: USD

Product Price: 500

Price Valid Until: 2059-09-30

Product In-Stock: InStock

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