SIST EN 50379-2:2005

SLOVENSKI SIST EN 50379-2:2005

STANDARD
december 2005
Specifikacije za prenosne električne naprave za merjenje parametrov
vnetljivosti izpušnega plina grelnih naprav - 2. del: Zahtevane lastnosti za
naprave, ki se uporabljajo pri zakonsko predpisanem pregledovanju in
ocenjevanju
Specification for portable electrical apparatus designed to measure combustion flue
gas parameters of heating appliances – Part 2: Performance requirements for
apparatus used in statutory inspections and assessment
ICS 91.140.10; 13.040.40 Referenčna številka
SIST EN 50379-2:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 50379-2
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2004

ICS 13.040.40; 91.140.10


English version


Specification for portable electrical apparatus designed to measure
combustion flue gas parameters of heating appliances
Part 2: Performance requirements for apparatus used in statutory
inspections and assessment


Spécification pour les appareils Anforderungen an tragbare elektrische
électriques portatifs conçus pour mesurer Geräte zur Messung
les paramètres des gaz de combustion von Verbrennungsparametern
dans les conduits d'évacuation von Heizungsanlagen
des appareils de chauffage Teil 2: Anforderungen an
Partie 2: Prescriptions des das Betriebsverhalten von Geräten
caractéristiques des appareils utilisés für den Einsatz bei gesetzlich geregelten
au cours des inspections et évaluations Messungen und Beurteilungen
réglementaires



This European Standard was approved by CENELEC on 2004-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50379-2:2004 E

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EN 50379-2:2004 – 2 –
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 216, Gas detectors.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50379-2 on
2004-03-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
 at national level by publication of an identical
 national standard or by endorsement (dop) 2005-03-01
- latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2007-03-01
__________

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– 3 – EN 50379-2:2004

Contents
Introduction . 5
1 Scope . 6
2 Normative references. 6
3 Definitions. 6
4 General requirements . 7
5 Test methods and performance requirements. 7
5.1 General requirements for tests. 7
5.1.1 Samples and sequence of tests. 7
5.1.2 Preparation of samples . 7
5.1.3 Test facility . 7
5.2 Normal conditions for tests. 7
5.3 Mechanical tests . 7
5.3.1 Degree of protection . 7
5.3.2 Impact strength . 7
5.3.3 Vibration . 7
5.3.4 Drop. 8
5.3.5 Flow indicator (if fitted). 8
5.3.6 Dust filter and water trap. 8
5.4 Electrical and software tests . 8
5.4.1 EMC. 8
5.4.2 Supply voltage variations (not applicable to battery powered apparatus) . 8
5.4.3 Battery fault condition (applicable only to battery powered apparatus). 8
5.4.4 Battery reversal (applicable only to battery powered apparatus). 8
5.4.5 Software and digital techniques. 8
5.5 Tests with test gases . 8
5.5.1 General. 8
5.5.2 Unpowered storage . 8
5.5.3 Initial performance . 8
5.5.4 Response time . 8
5.5.5 Cold start . 9
5.5.6 Zero reading . 9
5.6 Tests with real flue gases . 9
5.6.1 General. 9
5.6.2 Measurement uncertainty . 9
5.6.3 Low temperature (applicable only to apparatus designed for outdoor use). 9
5.6.4 Stability under practical conditions . 9
5.6.5 Test of filter capacity. 9
5.6.6 Final test with cylinder gases . 9
5.6.7 Sensor replacement (where applicable). 9
5.7 Calculated values . 9
5.7.1 General. 9
5.7.2 Calculation of CO gas volume ratio from O measurement . 9
2 2
5.7.3 CO/CO ratio. 9
2

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EN 50379-2:2004 – 4 –
5.8 Temperature . 10
5.8.1 Temperature measurement (flue gas). 10
5.8.2 Flue gas temperature response time . 10
5.8.3 Temperature measurement (inlet air) . 10
5.8.4 Inlet air temperature response time. 10
5.8.5 Cold start . 10
5.8.6 Thermocouple compensation. 10
5.8.7 High temperature . 10
5.9 Pressure .10
5.9.1 Pressure measurement (draught) . 10
5.9.2 Pressure measurement (differential) . 10

Annex A (informative) A-deviations. 11

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– 5 – EN 50379-2:2004

Introduction
This European Standard covers apparatus for measuring gas concentrations and other combustion
parameters, as used in the installation and maintenance of heating appliances. It forms a specification for
portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances,
and includes the following parts:
Part 1: General requirements and test methods;
Part 2: Performance requirements for apparatus used in statutory inspections and assessments;
Part 3: Performance requirements for apparatus used in non-statutory servicing of gas fired heating
appliances.
EN 50379-1 specifies general requirements for the construction, testing and performance of portable spot
reading apparatus designed to give an assessment of specific combustion flue gas parameters such as
concentration of gaseous compounds, temperature and/or pressure to check the combustion performance of
heating appliances for domestic residential and commercial applications using commercially available fuels.
EN 50379-2 is for apparatus intended to be used for statutory measurement. In several European countries,
legal requirements exist for the performance of heating appliances. Authorised inspectors use these
apparatus to measure the flue gas parameters, in order to test compliance with national regulations. Due to
the legal consequences resulting from the measurement there are strict requirements regarding the
measuring uncertainty of these apparatus. Therefore EN 50379-2 includes maximum values for measuring
uncertainty of the apparatus. Tests with real flue gases form a key part of the verification of the performance
of the apparatus for statutory measurement. The measuring uncertainty has to be justified by internationally
accepted methods over the whole measuring range.
EN 50379-3 is for apparatus intended to be used for non-statutory applications. There are reduced
performance requirements because the apparatus are designed to decide if maintenance for a gas fired
appliance is required and for adjusting the appliance during maintenance. There will be no determina
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