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Field validation

Steel stack, vertical profile to 40 m

Validation ID
FV-2026-002
Date
2026-05-30
Location
Central Italy, industrial site
Measurement points
35 accepted 3 rejected One square per reading. Not a map of the asset.

Test context

Asset
Steel stack
Material
Carbon steel
Reference thickness
6.0 mm nominal
Coating
High-temperature coating
Coating thickness
150 µm
Lift-off
1.0 mm
Surface condition
Weathered coating, no scale
Temperature
26 °C ambient
Geometry
Two vertical profiles to 40 m, readings every 2 m.

Results

Planned points
40
Points read
38
Measurements total
38
Accepted
35
Rejected
3
Mean error
0.07 mm
Maximum error
0.16 mm
Repeatability
0.06 mm standard deviation

Why readings were rejected: Three readings rejected for insufficient signal at a repair patch.

Reference and calibration

Rope-access piezoelectric spot checks at eight heights.

Step wedge calibration before the campaign.

What we measured

Demo narrative for layout review. All results on this staging site are invented.

Rejected readings

3 points, with reasons

Rejected readings and why
Point Location Condition Outcome
S-09 18 m elevation Repair patch Insufficient signal over the patch weld.
S-14 28 m elevation Repair patch Insufficient signal over the patch weld.
S-21 34 m elevation Coating blistering Lift-off beyond the validated limit at this point.

What this record does not demonstrate

Does not cover the refractory-lined lower section.

System used

960 × 640 Colibri360, real hardware in operation The actual product, photographed in use. No studio render, no CGI. media placeholder

Colibri360

Drone-mounted EMAT thickness gauge with the sensor on a rotary mast, for measuring metal structures without scaffolding or rope access.

  • 2 – 60 mm Measurable thickness — S355, mill scale, lift-off up to 2 mm, 20 °C
  • 0.08 mm Measurement accuracy — S355 reference block, lift-off 1 mm, 20 °C
  • 3 mm Validated lift-off — Coated carbon steel, coating up to 3 mm
Colibri360 details

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