SN EN 50379-3 : 2012

Introduction
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Test methods and performance requirements
  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
  5.3 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)

Includes apparatus designed for checking the performance of heating appliances by measuring flue gas parameters of gas fired heating appliances for domestic residential and commercial applications.