CORIOLIS MASS FLOW METER ASSEMBLING

INSIDE THE BUILD: WHERE PRECISION IS NOT CALIBRATED — IT IS CREATED

A Coriolis mass flow meter is not simply assembled.

It is constructed around physics that cannot tolerate deviation.

Unlike volumetric flow technologies, Coriolis measurement depends on the interaction between:

• oscillation geometry
• tube mass distribution
• sensor phase difference
• and micro-scale structural symmetry

Because of this, the assembly process is not a production step.

It is a controlled physical alignment process.

PHASE 1 — TUBE PREPARATION: THE FOUNDATION OF STABILITY

Everything begins with the measuring tubes.

Each tube is inspected and prepared to ensure:

• identical wall thickness distribution
• material consistency across batches
• absence of micro-deformation after forming
• precise resonance behavior under excitation

At this stage, the goal is not flow measurement.

It is mechanical neutrality.

Even minor inconsistencies here will amplify into signal drift later.

PHASE 2 — SENSOR INTEGRATION: WHERE MOTION BECOMES SIGNAL

Once the tubes are validated, the sensor system is integrated.

This includes:

• drive coil positioning
• pick-off sensor alignment
• vibration excitation calibration

The critical principle here is symmetry.

If the system is not perfectly balanced:

• phase detection becomes unstable
• mass flow output deviates
• zero-point drift increases

So the assembly is not tightened—it is aligned within tolerance windows measured in micrometers.

PHASE 3 — STRUCTURAL FIXATION: LOCKING THE MECHANICAL STATE

After sensor integration, the entire flow body is fixed into its housing.

But fixation is not force-based—it is constraint-based:

• stress is distributed, not concentrated
• thermal expansion paths are considered
• mechanical resonance is preserved, not suppressed

The structure must remain stable without interfering with vibration behavior.

In Coriolis technology, the structure must support motion, not resist it.

PHASE 4 — ELECTRONIC MATCHING: TRANSLATING PHYSICS INTO DATA

The signal generated by the tubes is extremely weak and sensitive.

During this stage:

• signal conditioning boards are paired
• frequency response is tuned
• phase detection circuits are synchronized

The goal is not amplification.

It is faithful interpretation of micro-motion.

Any mismatch here directly appears as measurement error.

PHASE 5 — CALIBRATION & ZERO STABILITY VERIFICATION

Final calibration is not a simple adjustment.

It is a validation of physical integrity.

Key checks include:

• zero-point stability under no-flow condition
• repeatability across vibration cycles
• temperature drift compensation behavior
• density consistency response

Only after these behaviors remain stable is the meter considered complete.