The Difference Between Single-Tube And Dual-Tube Coriolis Mass Flowmeters

Coriolis mass flowmeters can be categorized as single-tube or dual-tube types based on their structure.

Each brand of single-tube and dual-tube Coriolis mass flowmeters has its own unique features, but the principles and key characteristics are generally the same. The following analyzes the key differences between single-tube and dual-tube Coriolis mass flowmeters, using VTON's imported Coriolis mass flowmeters as an example:

Single-Tube Coriolis Mass Flowmeter: A single-tube Coriolis mass flowmeter has only one sensor tube in the measuring pipe. Fluid flows from the inlet through a single sensor tube, and the mass flow rate is determined by measuring the Coriolis effect induced in the fluid. Single-tube flowmeters are typically suitable for smaller pipe sizes and relatively low flow ranges.

Dual-Tube Coriolis Mass Flowmeter: A dual-tube Coriolis mass flowmeter has two parallel sensor tubes in the measuring pipe. Fluid flows from the inlet to two sensor tubes, and the Coriolis effect induced in each tube is measured separately. The mass flow rate is determined by comparing the measured results from the two tubes. Twin-tube flowmeters are generally suitable for larger pipe sizes and wider flow ranges. For example, a twin-tube Coriolis mass flowmeter from VTON is often used for mass flow measurement in DN100 pipes.

Main Differences:

Single-tube flowmeters have only one sensor pipe, while twin-tube flowmeters have two parallel sensor pipes.

Single-tube flowmeters are suitable for smaller pipe sizes and lower flow ranges, while twin-tube flowmeters are suitable for larger pipe sizes and wider flow ranges.

Twin-tube flowmeters determine mass flow by comparing the measurement results from two pipes, offering higher measurement accuracy and reliability.

Choosing a single-tube or twin-tube Coriolis mass flowmeter depends on specific application requirements, including factors such as pipe size, flow range, measurement accuracy, and budget.