Dual Rotor Flow Meter | High-Accuracy Positive Displacement Flow Meter
The Dual Rotor Flow Meter is a high-accuracy positive displacement flow meter designed to measure liquid flow with precision and long-term stability. It uses two synchronized rotors that rotate in opposite directions, allowing the meter to directly measure volumetric flow.
As a result, engineers widely use dual rotor flow meters in oil, chemical, and industrial liquid metering systems where accuracy and reliability are critical.
Working Principle
When liquid enters the measuring chamber, the fluid pressure actively drives the two precision-machined rotors to rotate synchronously in opposite directions. Each complete rotor cycle displaces a fixed and known volume of liquid.
At the same time, the meter counts rotor rotations or output pulses and converts them into instantaneous flow rate and totalized volume. Therefore, because the dual rotor flow meter applies a positive displacement principle, flow fluctuations have minimal influence on measurement accuracy.
Technical Features and Advantages
High Measurement Accuracy
The dual rotor flow meter delivers measurement accuracy of ±0.2% to ±0.5%. Consequently, it meets the requirements of precision industrial measurement and custody transfer applications.
Excellent Repeatability
Moreover, the rigid rotor structure and high-precision machining ensure consistent performance over long operating periods. As a result, the meter maintains excellent repeatability even under continuous operation.
Wide Range of Applicable Liquids
In addition, the dual rotor flow meter measures a wide variety of liquids. For example, it performs reliably with fuel oil, lubricating oil, chemical liquids, and other industrial fluids ranging from low to high viscosity.
Low Pressure Loss
Furthermore, optimized internal flow paths reduce pressure loss while preserving measurement accuracy. This design helps improve overall system efficiency and energy performance.
Easy System Integration
The flow meter also supports flexible signal configurations. Users can select mechanical counters or electronic outputs such as pulse, 4–20 mA, or digital communication. Therefore, integration into automation and control systems becomes straightforward.
Product Types and Configuration Options
To meet different operating requirements, manufacturers offer dual rotor flow meters in several configurations:
- Mechanical Dual Rotor Flow Meter – Provides local reading with a simple and reliable structure
- Electronic Dual Rotor Flow Meter – Enables remote signal output and data acquisition
- Explosion-Proof Dual Rotor Flow Meter – Operates safely in hazardous environments
- High-Temperature Dual Rotor Flow Meter – Handles elevated-temperature liquids
In addition, customers can choose carbon steel or stainless steel materials to match specific media and process conditions.
Typical Applications
Dual rotor flow meters serve a wide range of industrial applications, including:
- Oil and refined petroleum product metering
- Chemical liquid dosing and transfer systems
- Energy and fuel management systems
- Lubricating oil and hydraulic oil measurement
- Industrial liquid custody transfer
In these applications, the flow meter improves measurement accuracy, strengthens process control, and enhances operational reliability.
Installation and Selection Guidelines
To achieve optimal performance, users should consider the following factors during selection and installation:
- Type and viscosity of the measured liquid
- Operating pressure and temperature range
- Required flow range and accuracy level
- Pipe size and connection type
- Output signal and control system requirements
Therefore, correct selection and proper installation directly contribute to longer service life and lower maintenance costs.
The Dual Rotor Flow Meter provides a reliable and high-precision solution for industrial liquid flow measurement. It combines stable performance, excellent repeatability, and broad adaptability. As a result, it suits demanding industrial and trade metering applications.
For customers who require accurate, durable, and proven volumetric flow measurement solutions, the dual rotor flow meter remains a dependable choice.