Flow

MEASURING PRINCIPLE

Coriolis mass flow

Oscillating tubes twist in proportion to mass flow; phase shift between sensors gives direct mass flow, density and temperature.

PRINCIPLE · LIVE SIGNAL13.9mA

HOW IT WORKS

See the principle in action

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Coriolis mass flow

MASS FLOW
35,000 kg/h

OUTPUT
12.0 mA

ADJUST MASS FLOW

Two tubes vibrate at their natural frequency.
Mass flowing through the tubes twists them (the Coriolis force).
Sensors measure the phase shift between inlet and outlet, which is proportional to mass flow.

AT A GLANCE

Strengths and limits

STRENGTHS

Direct mass flow, density, high accuracy

LIMITS

Higher cost, pressure drop on small bores

INSTRUMENTS

Instruments using this principle

FL-310

Flow

Coriolis Mass Flowmeter

Direct mass flow, density and temperature in one device.

ACCURACY

±0.1 % of reading

PROTECTION

IP67

APPLICATIONS

Where this principle is the answer

APPLICATION

Custody-transfer flow metering

Money changes hands on the measurement, so uncertainty and traceability must be demonstrable.

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Articles and downloads

Technical article

How a Coriolis flowmeter works

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FAQ

Common questions

RFQ

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