I.S. EN ISO 8990:1997

Section 1 General
  1.1 Scope
  1.2 Normative reference
  1.3 Definitions
  1.4 Symbols, units and relationships
  1.5 Principle
  1.6 Limitations and sources of errors
Section 2 Apparatus
  2.1 Introduction
  2.2 Design requirements
  2.3 Metering box
  2.4 Guard box
  2.5 Specimen frame
  2.6 Cold side chamber
  2.7 Temperature measurements
  2.8 Instrumentation
  2.9 Performance evaluation and calibration
Section 3 Test procedure
  3.1 Introduction
  3.2 Conditioning of specimen
  3.3 Specimen selection and mounting
  3.4 Test conditions
  3.5 Measurement periods
  3.6 Calculations
  3.7 Test report
Annexes
A Heat transfer at surfaces and environmental temperatures
B Bibliography

Covers the principles for the design of the apparatus and minimum requirement that shall be met for determination of the laboratory steady-state thermal transmission properties of building components and similar components for industrial use.