Tools & Resources

QN-100 Calibration Calculator

Professional-grade calibration tools for accurate NIR moisture measurement. Two-point linear regression analysis with statistical validation.

Calibration Methodology

The QN-100 uses linear regression to establish the relationship between sensor readings and actual moisture content. This calculator performs least-squares fitting with statistical validation metrics.

Prerequisites

  • ✓ Minimum 2 reference samples required
  • ✓ Lab-verified moisture values (ISO or equivalent)
  • ✓ Stable sensor readings for each sample
  • ✓ Wide moisture range coverage recommended

Output Metrics

  • ✓ Span coefficient (slope correction)
  • ✓ Zero offset (intercept adjustment)
  • ✓ R² correlation coefficient
  • ✓ Standard error of estimate

Quality Assurance

  • ✓ R² > 0.95: Production ready
  • ✓ 0.9 < R² ≤ 0.95: Good confidence
  • ✓ 0.8 < R² ≤ 0.9: Good, monitor
  • ✓ R² < 0.8: Recalibrate required

Calibration Details

This will be included in the generated report

Current Calibration

Start Point
Default: 1.00
Default: 0.00

Reference Sample Data

0 samples

Enter lab-verified moisture readings alongside corresponding sensor outputs. A minimum of 2 samples across a wide moisture range is recommended for accurate calibration. Automatic outlier checking activates from 4 samples onward.

Sample # Sensor Reading (%) Lab Reference (%) Deviation Outlier Check Exclude

Calibration Results

Output
New Span Coefficient
—
Slope adjustment multiplier
New Zero Offset
—
Intercept adjustment value
R² Coefficient
—
Goodness of fit (0–1.00)
Standard Error
—
RMS error in % units
Sample Count
0
Reference points analysed

Quality Assurance

Validation
PENDING
Add samples to calculate

R² Quality Thresholds

R² > 0.95
Excellent — Production ready
0.9 < R² ≤ 0.95
Good — Acceptable confidence
0.8 < R² ≤ 0.9
Good — Monitor performance
R² < 0.8
Poor — Recalibrate recommended

Calibration Visualization

Calibration Report

Generate a professional calibration report including methodology, results, and quality assurance metrics for documentation and compliance.

PDF format · Includes data, analysis, and quality thresholds

Calibration Support & Best Practices

Our applications team is available to provide guidance on reference materials, calibration methodology, and sensor setup optimization. Contact us directly for additional support.

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