/Industrial instruments
Vaisala Calibration book
This book serves as a generic introduction to calibration. We discuss the rational behind calibration, what are the factors that affect the need to calibrate. The book also contains specific information on calibration of relative humidity, dewpoint temperature, temperature and barometric pressure.
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
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