SN EN 60068-2-40 : 1999

1 Introduction
    1.1 General
    1.2 Low air pressure
    1.3 Temperature
    1.4 Related documents
2 Object
3 General description
4 Description of test apparatus
    4.1 Test chamber
    4.2 Mounting
5 Severities
    5.1 General
    5.2 Preferred combinations of temperature, air
          pressure and duration
6 Preconditioning
7 Initial measurements
8 Conditioning
    8.1 General
    8.2 Procedure for heat-dissipating specimen without
          artificial cooling of the specimen and for
          non-heat-dissipating specimen
    8.3 Precautions when testing specimens with
          artificial cooling
9 Intermediate measurements
10 Recovery
11 Final measurements
12 Information to be given in the relevant specification
Figures
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Covers combined cold (with gradual (or rapid) temperature change) and low air pressure tests for heat-dissipating and non-heat-dissipating specimens. Intended to establish the ability of components or equipment or other articles for storage and for use under a simultaneous combination of low temperature and low air pressure.