EN 60405 : 2007

FOREWORD
INTRODUCTION
1 Scope and object
2 Normative references
3 Definitions
4 Classification of radiometric gauge types
   4.1 Category A: Radiometric gauges with restricted beam
   4.2 Category B: radiometric gauges with omnidirectional beam
   4.3 Shielding classes
   4.4 Temperature classes
5 General requirements
   5.1 Measuring gap
   5.2 Source holder
   5.3 Source housing
   5.4 Alignment of the useful beam
   5.5 Other requirements
6 Protection against ionizing radiation
   6.1 General requirements
   6.2 Requirements for Category A gauges
   6.3 Requirements for Category B gauges
   6.4 Resistance of the source housing in case of fire
   6.5 Detector housing
   6.6 Measuring head
7 Other safety devices
   7.1 General
   7.2 Protection against non-authorized use
   7.3 Indication of the shutter position
   7.4 Additional warning device
8 Determination of the dose equivalent rate
   8.1 General
   8.2 Dose equivalent rate measurements in the case
        of closed shutters
   8.3 Dose equivalent rate measurements in the case
        of open shutters
   8.4 Procedure for dose equivalent rate measurements
   8.5 Determining the relevant values of the dose equivalent
        rate
9 Test methods
   9.1 General
   9.2 Temperature cycle test on the shutters and the source
        holder
   9.3 Test for checking the resistance of the shutter, the
        source holder and the source container in case of fire
   9.4 Test for checking the mechanical resistance of the
        shutter and the source holder
10 System classification coding and labelling
   10.1 Classification code
   10.2 Labelling
11 Accompanying documents
Annex ZA (informative) Guideline for installation of
         radiometric gauges
Annex ZB (normative) Normative references to international
         publications with their corresponding European
         publications

Applies to the manufacture and installation of electrical measuring systems and instruments utilizing radioactive sources (radiometric gauges, hereinafter called gauges).