SN EN 50379-1 : 2012

Introduction
1 Scope
2 Normative references
3 Definitions
4 General requirements
  4.1 General
  4.2 Construction
      4.2.1 General
      4.2.2 Sampling system
      4.2.3 Adjustments
      4.2.4 Power supply
      4.2.5 Display
      4.2.6 Measuring range and resolution
      4.2.7 Indication range
      4.2.8 Accuracy of the apparatus
      4.2.9 Detection limit
      4.2.10 Efficiency
      4.2.11 Printer or data storage
  4.3 Labelling and instructions
      4.3.1 Labelling
      4.3.2 Instructions
5 Test methods
  5.1 General requirements for tests
      5.1.1 Samples and sequence of tests
      5.1.2 Preparation of samples
      5.1.3 Test facility
  5.2 Normal conditions for tests
      5.2.1 General
      5.2.2 Cylinder test gases
      5.2.3 Measurements on heating appliances
      5.2.4 Power supply
      5.2.5 Temperature
      5.2.6 Humidity
      5.2.7 Pressure
      5.2.8 Exchangeable parts
  5.3 Mechanical tests
      5.3.1 Degree of protection
      5.3.2 Impact strength
      5.3.3 Vibration
      5.3.4 Drop
      5.3.5 Flow indicator (if fitted)
      5.3.6 Dust filter and water trap
  5.4 Electrical and software tests
      5.4.1 EMC
      5.4.2 Supply voltage variations (not applicable to
             battery powered apparatus)
      5.4.3 Battery fault condition (applicable only to
             battery powered apparatus)
      5.4.4 Battery reversal (applicable only to battery
             powered apparatus)
      5.4.5 Software and digital techniques
  5.5 Tests with test gases
      5.5.1 General
      5.5.2 Unpowered storage
      5.5.3 Initial performance
      5.5.4 Response time
      5.5.5 Cold start
      5.5.6 Zero reading
  5.6 Tests with real flue gases
      5.6.1 General
      5.6.2 Measurement uncertainty
      5.6.3 Low temperature (applicable only to apparatus
             designed for outdoor use)
      5.6.4 Stability under practical conditions
      5.6.5 Test of filter capacity
      5.6.6 Final test with cylinder gases
      5.6.7 Sensor replacement (where applicable)
  5.7 Calculated values
      5.7.1 General
      5.7.2 Calculation of CO[2] gas volume ratio from
             O[2] measurement
      5.7.3 CO/CO[2] ratio
  5.8 Temperature
      5.8.1 Temperature measurement (flue gas)
      5.8.2 Flue gas temperature response time
      5.8.3 Temperature measurement (inlet air)
      5.8.4 Inlet air temperature response time
      5.8.5 Cold start
      5.8.6 Thermocouple compensation
      5.8.7 High temperature
  5.9 Pressure
      5.9.1 Pressure measurement (draught)
      5.9.2 Pressure measurement (differential)
Annex A (informative) Standard combustion analysis procedures
      A.1 Combustion analysis in Germany
      A.2 Combustion analysis in the United Kingdom
      A.3 Combustion analysis in Italy
      A.4 Combustion analysis in Sweden
Annex B (normative) Real flue gas measurements - Methodology
                      and test methods
Annex C (normative) Standard methods for determining measuring
                      uncertainty
      C.1 Determination of the analytic function
      C.2 Determination of reproducibility
Figure
Tables

Describes apparatus for measuring gas concentrations and other combustion parameters, as used in the installation and maintenance of heating appliances.