NEN EN 12412-2 : 2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols, units and subscripts
4 Principle
5 Requirements for test specimen and apparatus
  5.1 General
  5.2 Surround panels
  5.3 Specimen requirements and location
      5.3.1 Complete frames for windows and doors
      5.3.2 Frame and sash, transom or mullion profile sections
  5.4 Calibration panels
  5.5 Temperature measurement and baffle positions
6 Test procedure
  6.1 General
  6.2 Calibration measurements
      6.2.1 General
      6.2.2 Total surface resistance
      6.2.3 Surface resistances and surface coefficients of heat
        transfer
      6.2.4 Surround panel and edge effects
  6.3 Measurement procedure for test specimens
7 Test report
Annex A (normative) Determination of environmental temperature
  A.1 General
  A.2 Environmental temperature
  A.3 Mean radiant temperature
  A.4 Convective surface heat transfer coefficient
Annex B (normative) Linear thermal transmittance of the
        edge zone
Annex C (informative) Example of calibration test and
        measurement of frame specimen
  C.1 Calibration test with panel size 1,23 m x 1,48 m
  C.2 Frame specimen measurement

Specifies method based on EN ISO 8990 and EN ISO 12567-1, to measure the thermal transmittance of frame and sash components of windows and doors, including mullions and transoms.