Decision Guide
Model B or Model T? Which Elcometer 224 fits your application?
The Elcometer 224 is one of the established devices for measuring surface profiles before coating work. But when making a choice, the question often arises: Is Model B enough – or is Model T the better investment? This guide helps you make the right decision for your application, your documentation requirements, and your budget.
Common Ground: What both models deliver
- Measuring Range: 0–500 µm (20 mils)
- Measurement Rate: 50+ readings per minute
- Standards: ASTM D4417-B, SSPC PA 17, SANS 5772
- IP64 protected, impact & dust resistant
- Measurement on flat and convex surfaces
- Factory calibrated & with test certificate
The measurement accuracy is identical for both variants – the decision is based on features, documentation, and workflow.
Model B vs. Model T – Feature Comparison
| Feature | Model B | Model T |
|---|---|---|
| Single Measurement | ✔ | ✔ |
| Internal Memory | – | ✔ up to 150,000 readings |
| Batch Measurements | – | ✔ |
| Statistics (Avg, Min, Max) | Limited | Advanced |
| Bluetooth / Data Export | – | ✔ |
Model B
Ideal for quick individual checks
Ideal for quick individual checks
Model T
Ideal for QA & documentation
Ideal for QA & documentation
Measurement Quality
Identical for both models
Identical for both models
Practical Tip:
As soon as readings need to be documented, compared, or archived, you save significant time with Model T – and avoid transcription errors.
As soon as readings need to be documented, compared, or archived, you save significant time with Model T – and avoid transcription errors.
Typical Application Scenarios
- Corrosion protection on construction sites: Model B is sufficient
- Industrial coating & QA: Model T recommended
- Final inspection with clients: Model T with data export
- Internal spot checks: Model B is economical
Common Decision Mistakes
- Buying Model B even though documentation is required
- Underestimating the effort of manual logging
- Not checking standard requirements in advance
- Not considering future needs
Conclusion:
If you only want to check whether a surface profile is within range,
Model B is an economical choice.
However, as soon as documentation, proof, or quality assurance are required,
Model T is clearly superior.
