prEN 14624
(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
1.1 General
This document specifies the requirements for portable locating leak detectors and fixed gas detectors for refrigerants.
Locating detectors used in factories for manufacturing processes are not included in the Scope of this document.
1.2 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.
1.3 Product performance
This document specifies minimum requirements for sensitivity, operating range, response time, environmental conditions and cross sensitivity from interference gases.
1.4 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).
1.5 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 Kältemittel fest.
Leckdetektoren mit Suchfunktion, die für Fertigungsprozesse in Fabriken verwendet werden, liegen nicht im Anwendungsbereich von diesem Dokument.
1.2 Anwendung des Produkts
Dieses Dokument gilt für unterschiedliche Anwendungen und Umgebungen wie Anlagen- und Maschinenräume, 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, Umgebungsbedingungen 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 regelmäßig auf ihre korrekte Funktion geprüft.
Performances des détecteurs portables localisateurs de fuites et des détecteurs de gaz fixes pour tous les fluides frigorigènes
1.1 Généralités
Le présent document spécifie les exigences relatives aux détecteurs portables localisateurs de fuites et aux détecteurs de gaz fixes pour les fluides frigorigènes.
Les détecteurs utilisés dans les usines pour les procédés de fabrication ne sont pas inclus dans le domaine d'application du présent document.
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 croisée aux gaz interférents.
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, et 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 nécessite une vérification régulière des performances 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-januar-2026
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 stationären Gasmeldern für alle Kältemittel
Performances des détecteurs portables localisateurs de fuites et des détecteurs de gaz
fixes pour tous les fluides frigorigènes
Ta slovenski standard je istoveten z: prEN 14624
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.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2025
ICS 23.040.99; 71.100.45 Will supersede EN 14624:2020
English Version
Performance of portable locating leak detectors and of
fixed gas detectors for all refrigerants
Performances des détecteurs portables localisateurs de Leistung von mobilen Leckdetektoren und stationären
fuites et des détecteurs de gaz fixes pour tous les Gasmeldern für alle Kältemittel
fluides frigorigènes
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 182.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14624:2025 E
worldwide for CEN national Members.
Page
Contents
European foreword . 4
Introduction . 5
1 Scope . 6
1.1 General . 6
1.2 Product application . 6
1.3 Product performance . 6
1.4 Product installation . 6
1.5 Service and maintenance . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 9
5 General requirements for all portable locating leak detectors and fixed gas
detectors - Refrigerant gas type (informative) . 9
6 Specific requirements for portable locating leak detectors . 10
6.1 Detection limits . 10
6.1.1 General . 10
6.1.2 Static detection limit - the leak detector probe (3.10) is stationary . 10
6.1.3 Dynamic detection limit - the leak detector probe (3.10) is moving . 10
6.2 Response time . 10
6.3 Recovery time . 10
6.4 Calibration frequency and procedure . 10
7 Test apparatus for portable leak detectors . 10
7.1 General . 10
7.2 Calibration leaks . 11
7.3 Measuring distance . 11
7.4 Apparatus no. 1: detector probe stationary at the orifice of calibration leak . 11
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 . 13
8 Performance tests of portable leak detectors . 13
8.1 General . 13
8.2 Test no. 1: Static detection limits . 13
8.3 Test no. 2: Dynamic detection limits . 14
8.4 Test no. 3 Dynamic detection limit in a contaminated environment . 14
8.5 Test no. 4: Response time . 15
8.6 Test no. 5: Recovery time . 15
9 Portable leak detector characteristics, reporting of test results and requirements. 16
9.1 Reporting of test result . 16
9.2 Minimum product requirements . 16
10 Service and maintenance — Portable locating leak detectors — Periodic check and
calibration . 16
11 Technical specification and product information — Portable locating leak
detectors . 16
12 Specific requirements for fixed gas detectors . 17
12.1 General . 17
12.2 Suitability . 17
12.3 Function of gas detector . 17
12.4 Ambient conditions, temperature and humidity . 18
12.5 Typical measuring ranges and thresholds . 18
12.6 Accuracy and performance . 19
12.7 Response time . 19
13 Test apparatus for fixed gas detectors . 20
13.1 General . 20
13.2 Apparatus no. 3b: Chamber with monitored concentration . 20
13.3 Apparatus no. 4: Calibration gas with specific concentration . 21
13.4 Apparatus no. 5: Calibration gas for aspirated systems . 22
14 Performance tests of gas detector . 22
14.1 General . 22
14.2 Test conditions — Temperature and humidity . 23
14.3 Test methods . 23
14.3.1 General . 23
14.3.2 Test of accuracy and thresholds . 23
14.3.3 Test of response time . 23
15 Fixed gas detector characteristics, reporting of test results — Reporting of test
results . 23
16 Service and maintenance — Fixed gas detectors . 23
16.1 Expected sensor life cycle . 23
16.2 Periodic check and calibration . 24
17 Technical specification and product information - Fixed gas detectors . 24
Annex A (informative) Conversion factors of leakage rate (3.3) units. 25
Annex B (informative) Correlation between test gas concentration and leakage rate . 26
B.1 Example: Conversion of a concentration increase in a hood to a total leakage
volume flow rate (pV-throughput) . 26
B.2 Example: Concentration increase due to a small leak in a voluminous room . 26
B.3 Example 2: Conversion of a leakage rate (pV-throughput) into a mass flow rate . 27
B.4 Example 3: Calculation of the concentrations of tracer gas to be detected in front
of a leak with specified leakage rate . 28
Annex C (informative) Guidelines for application of Fixed Gas Detectors . 30
Annex D (informative) Calculation of gas concentration from kg/m3 to ppm . 31
Annex E (informative) Selectivity, cross interference and potential contaminants . 32
Bibliography . 34
European foreword
This document (prEN 14624:2025) has been prepared by Technical Committee CEN/TC 182
"Refrigerating systems, safety and environmental requirements", the secr
...
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