Coriolis Mass Flow Meter

What Is a Coriolis Flow Meter?

By using motion mechanics, Coriolis flowmeters measure the rate at which given masses of corrosive and clean liquids and gases flow through a tube. A Coriolis meter directly measures the mass flow rate with high accuracy while simultaneously measuring density, temperature, volumetric flow rate, and concentration.

Mass flow rate, directly measured by Coriolis force:
Coriolis force: F=2mωv
(F: Coriolis force, m: mass, ω: angular velocity, v: velocity)

What are ROTAMASS Total Insight Coriolis Mass Flow and Density Meters?

ROTAMASS Total Insight (TI), Yokogawa’s Coriolis mass flowmeter, provides very high accuracy for measuring liquids and gases while adopting the Total Insight concept and totally supporting the product lifecycle.

From the direct mass flow, density, and temperature measurements, with ROTAMASS TI you can calculate:

Volume flow at operating or reference conditions
Density at reference conditions
Concentration measurements of mixable or unmixable fluids

With additional measurement input, ROTAMASS TI can calculate fluid viscosity for Newtonian liquids or energy-heating value for gas measurement.

Product Lineup

ROTAMASS TI can provide very high accuracy for measuring liquids and gases under process conditions.

		ROTAMASS Nano	ROTAMASS Prime	ROTAMASS Hygienic	ROTAMASS Supreme	ROTAMASS Intense	ROTAMASS Giga

Main Application		For low-flow applications	Versatility with superior turndown and low pressure loss	For food & beverage, biotechnology, and pharmaceutical utility applications	Superior performance under demanding conditions	For high-pressure applications	Flexible installation for high flow applications
Process temperature		-50 to +260 °C	-70 to +200 °C	-70 to +140 °C	-196 to +350 °C	-70 to +150 °C	-70 to +350 °C
Process pressure up to		285 bar or 460 bar *1	100 bar	40 bar	100 bar or 250 bar *1	260 bar or 360 bar *1	100 bar or 180 bar *1
Accuracy	Mass flow for liquids up to	±0.1 %	±0.1 %	±0.1 %	±0.1 %	±0.1 %	±0.1 %
	Mass flow for gas up to	±0.35 %	±0.35 %	±0.35 %	±0.35 %	±0.35 %	±0.35 %
	Density for liquids up to	±0.5 g/l	±0.5 g/l	±0.5 g/l	±0.5 g/l	±0.5 g/l	±1.0 g/l

*1: available on demand

ROTAMASS Total Insight

It is the most technologically advanced mass flowmeter yet. By combining the superior design of the application specific flow sensor and transmitters with the Total Insight philosophy and functionality, the flexibility of the Rotamass to adapt to changing requirements guarantees performance throughout the lifecycle of the process measurement.

What Are the Benefits of a ROTAMASS Total Insight Coriolis Meter?

Regarding the vibration noise from the pipeline, the “box-in-box” design of the ROTAMASS TI isolates the flow tubes from the process connection. By absorbing the mechanical noise or any external forces from misalignment from the pipeline, it delivers an excellent zero stability and final flat accuracy. The ROTAMASS TI performance made it possible for the customer to make process improvements, which resulted in higher efficiency between the fuel consumed and the power generated. It was a major improvement over the prior metering system.

Further digitalization support by Total Insight includes compatibility with SensPlus™ Buddy, which is a communication support service for providing support to sites from a remote location using a mobile device. Its operation is intuitive, and it enables visual transmission by video calls and augmented reality (AR) as well as information sharing by sending images and text. Smooth and accurate communication using SensPlus Buddy improves the efficiency of maintenance work and reduces losses due to mistakes. This tool facilitates safe and worry-free maintenance activities.

History of Yokogawa’s Coriolis Mass Flow and Density Meters

Yokogawa's Coriolis Mass Flow and Density Meters was sold worldwide in 1993 as ROTAMASS.

The first ROTAMASS was a product that improved noise resistance by adopting a self-drain structure that reduces fluid accumulation, and a Box-in-Box structure that greatly reduces piping noise and flow noise.

In the last decade, the use of Coriolis Mass Flow and Density Meters has shifted from general-purpose to supporting your needs in specific applications. While the technological complexity increased, the demand for simple operation and handling is also a rising requirement. Yokogawa answers these needs by offering six dedicated product lines with two specialized transmitters, allowing the highest flexibility — the ROTAMASS Total Insight.

History of Yokogawa’s Coriolis Mass Flow and Density Meters