PD IEC/TR 61831:2011

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Remarks and considerations
5 Health, safety and environmental considerations
6 Housings
7 Sampling systems
8 Analyser communications
Annex A (informative) - Typical analyser process line sampling
        probe for line sizes NPS 2" and above
Annex B (informative) - Determination of sample probe lengths
Annex C (informative) - Sample system calculations
Annex D (informative) - Natural ventilation calculations
Annex E (informative) - Forced ventilation calculations
Annex F (informative) - Example of verification/calibration
        sequence of data to computer
Annex G (informative) - Analyser house with forced
        ventilation - Summary of recommended control shut-down
        actions for flammable hazard operation
Annex H (informative) - Analyser houses with forced
        ventilation - Ventilation failure and flammable gas
        detection trip logic
Annex I (informative) - Typical analyser system schematics
Annex J (informative) - Example schematic showing a typical
        wall penetration using a transit
Bibliography

Pertains to on-line analyser systems. It also gives the necessary guidance for the system supplier and user to specify or design a complete analyser system from sample point in the process to the final output for display or control purposes.

This technical report is a guide applicable to on-line analyser systems. It provides the necessary guidance for the system supplier and user to specify or design a complete analyser system from sample point in the process to the final output for display or control purposes.