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GUIDE — April 02, 2026 — 1 min read

Standardizing Reference Background Measurement Intervals in Process Spectroscopy

Ensure long-term calibration model stability by managing ambient temperature and diode source drift.

The Cause of Instrument Calibration Drift

Industrial spectrometers face extreme environment shifts (e.g., changes in ambient temperature and humidity). These shifts affect diode detector response and light source output, causing calibration models to drift over time. Regular reference background measurements are required to maintain accuracy.

Automated Internal Reference Standards

USTECH spectrometers feature automated internal reference standards (such as a gold-flag mirror). The system measures the reference background automatically at scheduled intervals, eliminating manual calibration tasks and ensuring long-term model stability.

References

  • ASTM E1790 - Standard Practice for Near Infrared Qualitative Analysis.
  • "Automating Reference Standards in Process Analytics to Mitigate Calibration Model Drift," Journal of Chemometrics, 2023.
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