Table of Contents

SCOPE
INTRODUCTION

1. CALIBRATION REQUIREMENTS
     1.1. Quality management standards
     1.2.Traceability
     1.3. Calibration documentation
             Validity of calibration

2. METROLOGY AND CALIBRATION SERVICES
     2.1. International cooperation
             Legal metrology
             Metrology
             Accreditation
     2.2.National measurement standard laboratories
     2.3. Commercial calibration services
             Accredited laboratories
             Non-accredited calibration services and laboratories
     2.4. In-house calibration
             Organization and management
             Technical documentation
             Choosing reference equipment

3. CALIBRATION ACTIVITIES
                  What should we do with the calibration results?
     3.1. Choosing calibration method
             When calibration is needed
             Laboratory and field calibration
             Field spot checking
     3.2. Determining the calibration interval
             Lengthening the calibration interval
             Shortening the calibration interval
     3.3. Choosing calibration points
     3.4. Calibration methods by the user
             Temperature equilibrium
             Stabilization and sampling
             Uncertainty estimation
             Presenting the results

4. CALIBRATION IN PRACTICE
     4.1. Humidity calibration
             Choosing reference equipment
             Relative humidity calibration
             Dewpoint temperature calibration
     4.2.Temperature calibration
             ITS-90 Temperature Scale
             Choosing reference equipment
             Temperature calibration methods
     4.3. Pressure calibration
             Choosing reference equipment
             Pressure calibration methods

5. VAISALA CALIBRATION SERVICES

APPENDIX A: TERMINOLOGY
APPENDIX B: ABBREVIATIONS
APPENDIX C: UNCERTAINTY CALCULATION
REFERENCES