Rroots Gas 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.

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 standard	Measurement of gas flow in closed pipelines—”Gas Lumbar Flowmeter” (JB/T7385-94)
Caliber and connection method	25, 40, 50, 65, 80, 100, 125, 150, 200, 250 are flanged
Accuracy class	±1.5%R (±1%R needs to be specially made)*
Instrument material	Body: cast aluminum or cast iron; rotor: high-quality aluminum alloy; converter: cast aluminum
Conditions of Use	Medium temperature: -10℃～+60℃ Ambient temperature: -30℃~+60℃; Relative humidity: 5%～90% Atmospheric pressure: 86～106KPa
Power supply	A. 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 consumption	A. External power supply: <1W; B. Internal power supply: average power consumption ≤1W, can be used continuously for more than three years.
Output signal	Pulse signal, 4 ~ 20mA current signal, IC card control signal
Communication output	RS485 communication
Real-time recording	Start-stop record, daily record, fixed time interval record
Signal line interface	Internal thread M20×1.5 or others
Explosion-proof grade	ExibIICT4
Protection level	IP65

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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.

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.

Extended reading: Buy Digital Gas Flow Meters & Controllers For Air-O2-N2-CO2

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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.