Please confirm specifications before ordering

The Gas Roots Flowmeter is a positive displacement flowmeter, whose core working principle relies on the precise meshing and synchronous rotation of two or more rotors (root-shaped rotors) inside the metering chamber to realize accurate gas flow measurement. Unlike traditional flowmeters that require long straight pipe sections to stabilize the flow field and ensure measurement accuracy, this gas roots flowmeter has an optimized structural design that eliminates the need for front and rear straight pipe sections, making it adaptable to complex pipeline working conditions.
When the measured gas enters the metering chamber from the inlet, the pressure difference between the inlet and outlet drives the two rotors to rotate in opposite directions. The rotors and the inner wall of the metering chamber form a closed measuring cavity with a fixed volume. As the rotors rotate continuously, the gas is continuously captured, sealed, and pushed from the inlet to the outlet. Each rotation of the rotors discharges a fixed volume of gas, and the total flow rate is calculated by counting the number of rotor rotations (converted into electrical signals by a sensor) and multiplying it by the fixed volume of the measuring cavity.
The key reason for no requirement for straight pipe sections lies in the positive displacement measurement method itself and the optimized flow channel design. Since the measurement is based on the fixed volume of the measuring cavity and the rotation of the rotors is driven by the gas pressure difference, it is not affected by the uneven flow field, eddy current or flow direction changes caused by the lack of straight pipe sections. The compact internal structure and reasonable rotor layout ensure that the gas can enter the metering chamber stably and evenly, even in narrow or complex pipeline spaces, without the need for straight pipe sections to rectify the flow, thus achieving accurate and stable measurement while simplifying installation and reducing space requirements.

1.Positive displacement structure design
Adopts precision twin rotors meshing structure, with stable operation and high volumetric measurement accuracy.
2.Straight pipe section independent design
No need for front and rear straight pipe sections, free from turbulent flow and complex pipeline interference, suitable for narrow and limited installation conditions.
3.Ultra-wide measuring range & low starting flow design
Reasonable flow channel structure ensures wide turndown ratio, captures tiny flow effectively to avoid measurement omission.
4.Low pressure loss optimized design
Streamlined internal flow path reduces gas transmission resistance, small pressure drop and energy-saving operation.
5.Heavy-duty & durable structural design
Reinforced housing and high wear-resistant internal parts, long service life, simple structure and convenient daily maintenance.
6.Compact & modular design
Small overall size, flexible horizontal and vertical installation, strong adaptability for various industrial gas working conditions.