BS ISO 14934-2:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principles
5 Suitability of a gauge for calibration
6 Vacuum black-body cavity (VBBC) method (method 1)
7 Spherical black-body cavity method (method 2)
8 Variable-temperature black-body (VTBB) method (method 3)
9 Number of calibration levels
10 Expression of results
11 Calibration report
Annex A (normative) - Operating procedure for vacuum
        black-body cavity method (VBBC) (method 1)
Annex B (normative) - Calculating the irradiance from
        the vacuum black-body cavity (VBBC) to the
        heat flux meter
Annex C (informative) - Examples of computer screens
        for calculating the irradiance from the vacuum
        black-body cavity (VBBC)
Annex D (normative) - Operating procedure for spherical
        black-body cavity method (method 2)
Annex E (normative) - Calculating the irradiance from the
        spherical black-body cavity to the heat flux meter
Annex F (normative) - Drawings for the fixed and movable
        cooler to the spherical blackbody cavity
Annex G (informative) - Guidance notes for operators using
        the spherical black-body cavity method
Annex H (normative) - Electrical substitution radiometer
        (ESR) operating procedure
Annex I (normative) - Procedure for heat flux meter
        calibration using the 25-mm VTBB method (method 3)
Annex J (normative) - Data reduction procedure for the
        VTBB method (method 3)
Annex K (informative) - Precision of calibration
Bibliography

Specifies three methods for calibration of total hemispherical radiometers and total heat flux meters that are exposed to a well-defined radiation from a radiant heat source.

This part of ISO14934 describes three methods for calibration of total hemispherical radiometers and total heat flux meters that are exposed to a well-defined radiation from a radiant heat source. The equipment is designed to minimize influences due to convective heat transfer during calibration. It is important to note that when the instruments are used in practice they measure a combination of radiant and convective heat transfers. The latter will depend on the design of the heat flux meter, the orientation, local temperature and flow conditions, and on the temperature of the cooling water.