FAQ – Can We Send Data from the Lab Instrument to SpectraTrend HT?
Answer
Generally, no. Laboratory standards and tolerances should not be directly transferred to SpectraTrend® HT because the systems use different geometries, optical designs, measurement environments, and measurement objectives. Each system should establish its own standards based on its intended purpose.
Why Doesn't Direct Transfer Work?
Differences may include:
- Measurement geometry.
- Optical design.
- Illumination conditions.
- Product temperature.
- Surface texture.
- Process environment.
- Measurement location.
These factors often produce different numerical values even when evaluating the same product.
What Is the Best Solution?
The recommended approach is to establish standards independently for each system and use correlation studies to understand how the measurements relate. This allows:
- STHT to monitor process variation.
- Laboratory instruments to verify product quality.
Both systems to support the same quality objectives.
Best Practices
- Create standards independently on each system.
- Use laboratory instruments for final product acceptance.
- Use STHT for real-time process control.
- Validate STHT operating limits against production performance.
- Periodically review correlations as products or processes evolve.
Practical Guidance
Laboratory instruments answer: "Does the product meet specification?"
STHT answers: "Is the process changing?"
When viewed this way, the systems become complementary rather than competitive.
Key Takeaway
Direct transfer of laboratory standards and tolerances to STHT is generally not recommended. Independent standards supported by a well-designed correlation study provide the most effective long-term solution.
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To learn more about Color and Color Science in industrial QC applications, click here: Fundamentals of Color and Appearance