EN 14624:2020
(Main)Performance of portable locating leak detectors and of fixed gas detectors for all refrigerants
Performance of portable locating leak detectors and of fixed gas detectors for all refrigerants
This document specifies the requirements for portable locating leak detectors and fixed gas detectors for all refrigerants.
Locating detectors used in factories for manufacturing processes are not included in the Scope of prEN 14624.
1.1 Product application:
This document applies to different applications and environments such as plant and machine rooms, production rooms, cold rooms, supermarkets, occupied spaces like offices and hotels.
1.2 Product performance:
This document specifies minimum requirements for sensitivity, operating range, response time, environmental conditions and cross sensitivity from interference gases.
1.3 Product installation:
This document gives guidance of suitable technology, location of detection points, interconnection with secondary equipment (e.g. initiation of mechanical ventilation, personnel warning, and equipment shutdown).
1.4 Service and maintenance:
This document gives guidance for service and maintenance: Sensors and mechanical equipment have a limited operating life and require regular performance verification to ensure conformity.
Leistung von mobilen Leckdetektoren und stationären Gasmeldern für alle Kältemittel
1.1 Allgemeines
Dieses Dokument legt die Anforderungen für mobile Leckdetektoren mit Suchfunktion und feste Gasmelder für alle Kältemittel fest.
Leckdetektoren mit Suchfunktion, die für Fertigungsprozesse in Fabriken verwendet werden, liegen nicht im Anwendungsbereich von EN 14624.
1.2 Anwendung des Produkts
Dieses Dokument gilt für unterschiedliche Anwendungen und Umgebungen wie Anlagen und Maschinen¬räume, Fertigungsräume, Kältekammern, Supermärkte und Räume, in denen sich Personen aufhalten, wie z. B. Büros und Hotels.
1.3 Leistung des Produkts
Dieses Dokument legt Mindestanforderungen für Empfindlichkeit, Betriebsbereich, Ansprechzeit, Um-gebungsbedingungen und Querempfindlichkeit durch Störgase fest.
1.4 Montage des Produkts
Dieses Dokument bietet einen Leitfaden für geeignete Technologien, den Standort von Erkennungspunkten, die Anbindung an Zusatzausrüstung (z. B. Aktivierung von mechanischer Lüftung, Personalwarnung und Anlagen Abschaltung).
1.5 Wartung und Instandhaltung
Dieses Dokument bietet einen Leitfaden für die Wartung und Instandhaltung: Sensoren und mechanische Geräte haben eine beschränkte Betriebslebensdauer und werden zur Sicherstellung ihrer Konformität regel¬mäßig auf ihre korrekte Funktion geprüft.
Performances des détecteurs de fuites portables et des détecteurs de gaz fixes pour tous les fluides frigorigènes
1.1 Généralités
Le présent document spécifie les exigences relatives aux détecteurs de fuites portables et aux détecteurs de gaz fixes pour tous les fluides frigorigènes.
Les détecteurs utilisés dans les usines pour les procédés de fabrication ne sont pas inclus dans le domaine d'application de l’EN 14624.
1.2 Application du produit
Le présent document s'applique à différentes applications et environnements tels que les usines et salles de machines, les salles de production, les chambres froides, les supermarchés, les espaces occupés comme les bureaux et les hôtels.
1.3 Performance du produit
Le présent document spécifie les exigences minimales en matière de sensibilité, de plage de fonctionnement, de temps de réponse, de conditions environnementales et de sensibilité aux interférences de gaz.
1.4 Installation du produit
Le présent document fournit des orientations sur la technologie appropriée, l'emplacement des points de détection, l'interconnexion avec l'équipement secondaire (par exemple, déclenchement de la ventilation mécanique, avertissement du personnel, arrêt de l'équipement).
1.5 Entretien et maintenance
Le présent document donne des conseils pour l'entretien et la maintenance : les capteurs et l'équipement mécanique ont une durée de vie limitée et une vérification régulière des performances est nécessaire pour assurer la conformité.
Lastnosti premično lociranih javljalnikov puščanja in fiksnih detektorjev plina za vsa hladilna sredstva
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2020
Nadomešča:
SIST EN 14624:2012
Lastnosti premično lociranih javljalnikov puščanja in fiksnih detektorjev plina za
vsa hladilna sredstva
Performance of portable locating leak detectors and of fixed gas detectors for all
refrigerants
Leistung von mobilen Leckdetektoren und Raumüberwachungsgeräten für halogenierte
Kältemittel
Performances des détecteurs de fuite portables et des contrôleurs d'ambiance de fluides
frigorigènes halogénés
Ta slovenski standard je istoveten z: EN 14624:2020
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
27.200 Hladilna tehnologija Refrigerating technology
71.100.45 Hladiva in antifrizi Refrigerants and antifreezes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 14624
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 23.040.99; 71.100.45 Supersedes EN 14624:2012
English Version
Performance of portable locating leak detectors and of
fixed gas detectors for all refrigerants
Performances des détecteurs de fuites portables et des Leistung von mobilen Leckdetektoren und stationären
détecteurs de gaz fixes pour tous les fluides Gasmeldern für alle Kältemittel
frigorigènes
This European Standard was approved by CEN on 3 February 2020.
CEN 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 CEN-CENELEC Management Centre or to any CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14624:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 10
5 General requirements for all portable locating leak detectors and fixed gas
detectors — Refrigerant gas type (informative) . 10
6 Specific requirements for portable locating leak detectors . 11
6.1 Detection limits . 11
6.1.1 General. 11
6.1.2 Static detection limit - the leak detector probe is stationary . 11
6.1.3 Dynamic detection limit - the leak detector probe is moving . 11
6.1.4 Dynamic detection limit in a contaminated environment . 11
6.2 Response time . 11
6.3 Recovery time . 11
6.4 Calibration frequency and procedure . 11
7 Test apparatus for portable leak detectors . 11
7.1 General. 11
7.2 Calibration leaks . 12
7.3 Measuring distance . 12
7.4 Apparatus no. 1: detector probe stationary at the orifice of calibration leak . 12
7.5 Apparatus no. 2: detector probe moved with defined speed and distance in front of a
calibration leak . 12
7.6 Apparatus no. 3a: Chamber with monitored concentration . 14
8 Performance tests of portable leak detectors . 15
8.1 General. 15
8.2 Test no. 1: Static detection limits . 15
8.3 Test no. 2: Dynamic detection limits . 15
8.4 Test no. 3 Dynamic detection limit in a contaminated environment . 16
8.5 Test no. 4: Response time . 16
8.6 Test no. 5: Recovery time . 16
9 Portable leak detector characteristics, reporting of test results and requirements . 17
9.1 Reporting of test result . 17
9.2 Minimum product requirements . 17
10 Service and maintenance — Portable locating leak detectors — Periodic check and
calibration . 18
11 Technical specification and product information — Portable locating leak detectors . 18
12 Specific requirements for fixed gas detectors . 18
12.1 General. 18
12.2 Suitability . 19
12.3 Function of gas detector . 19
12.4 Ambient conditions, temperature and humidity . 19
12.5 Typical measuring ranges and thresholds . 20
12.6 Accuracy and performance . 21
12.7 Response time . 21
13 Test apparatus for fixed gas detectors . 22
13.1 General . 22
13.2 Apparatus no. 3b: Chamber with monitored concentration . 22
13.3 Apparatus no. 4: Calibration gas with specific concentration . 23
13.4 Apparatus no. 5: Calibration gas for aspirated systems . 24
14 Performance tests of gas detector . 24
14.1 General . 24
14.2 Test conditions — Temperature and humidity . 24
14.3 Test methods . 25
14.3.1 General . 25
14.3.2 Test of accuracy and thresholds . 25
14.3.3 Test of response time . 25
15 Fixed gas detector characteristics, reporting of test results — Reporting of test
results . 25
16 Service and maintenance — Fixed gas detectors . 25
16.1 Expected sensor lifecycle . 25
16.2 Periodic check and calibration . 25
17 Technical specification and product information - Fixed gas detectors . 26
Annex A (informative) Conversion factors of leakage rate units . 27
Annex B (informative) Correlation between test gas concentration and leakage rate . 28
B.1 EXAMPLE 1a: Conversion of a concentration increase in a hood to a total leakage
volume flow rate (pV-throughput) . 28
B.2 EXAMPLE 1b: Concentration increase due to a small leak in a voluminous room . 28
B.3 EXAMPLE 2: Conversion of a leakage rate (pV-throughput) into a mass flow rate. 29
B.4 EXAMPLE 3:Calculation of the concentrations of tracer gas to be detected in front of
a leak with specified leakage rate . 30
Annex C (informative) Guidelines for application of Fixed Gas Detectors . 32
Annex D (informative) Calculation of gas concentration from kg/m3 to ppm . 33
Annex E (informative) Selectivity, cross interference and potential contaminants . 34
Bibliography . 36
European foreword
This document (EN 14624:2020) has been prepared by Technical Committee CEN/TC 182
“Refrigerating systems, safety and environmental requirements”, the secretariat of which is held by
DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2020, and conflicting national standards
shall be withdrawn at the latest by September 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 14624:2012.
The following changes have been made during revision:
a) the document has been restructured and divided into two parts: Portable locating leak detectors
and fixed gas detectors;
b) the document covers all types of refrigerants;
c) Annex C “Guidelines for
...
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