prEN 12094-11

SLOVENSKI STANDARD
01-september-2016
Vgrajeni gasilni sistemi - Sestavni deli sistemov za gašenje s plinom - 11. del:
Zahteve in preskusne metode za mehanske naprave za tehtanje
Fixed firefighting systems - Components for gas extinguishing systems - Part 11:
Requirements and test methods for mechanical weighing devices
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Löschanlagen mit gasförmigen
Löschmitteln - Teil 11: Anforderungen und Prüfverfahren für mechanische
Wägeeinrichtungen
Installations fixes de lutte contre l’incendie - Éléments constitutifs des installations
d’extinction à gaz - Partie 11 : Exigences et méthodes d’essai pour dispositifs de pesée
mécaniques
Ta slovenski standard je istoveten z: prEN 12094-11
ICS:
13.220.10 Gašenje požara Fire-fighting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2016
ICS 13.220.20 Will supersede EN 12094-11:2003
English Version
Fixed firefighting systems - Components for gas
extinguishing systems - Part 11: Requirements and test
methods for mechanical weighing devices
Installations fixes de lutte contre l'incendie - Éléments Ortsfeste Brandbekämpfungsanlagen - Bauteile für
constitutifs des installations d'extinction à gaz - Partie Löschanlagen mit gasförmigen Löschmitteln - Teil 11:
11 : Exigences et méthodes d'essai pour dispositifs de Anforderungen und Prüfverfahren für mechanische
pesée mécaniques Wägeeinrichtungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12094-11:2016 E
worldwide for CEN national Members.

Contents page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Terms and definitions . 5
3 Product characteristics . 6
3.1 General . 6
3.2 Operational reliability . 6
3.3 Durability of operational reliability . 7
4 Testing, assessment and sampling methods . 7
4.1 General . 7
4.2 Operational reliability . 7
4.3 Durability of operational reliability . 9
5 Marking and documentation . 9
5.1 Marking . 9
5.2 Documentation . 9
6 Assessment and verification of constancy of performance (AVCP) . 10
6.1 General . 10
6.2 Type testing . 10
6.3 Factory production control (FPC) . 12
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Regulation . 18
A.1 Scope and relevant characteristics . 18
A.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 18
A.3 Assignment of AVCP tasks . 19
Bibliography . 20
European foreword
This document (prEN 12094-11:2016) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting system”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Regulation (EU) 305/2011.
For relationship with EU Regulation (EU) 305/2011, see informative Annex ZA which is an integral part of
this document.
EN 12094, Fixed firefighting systems - Components for gas extinguishing systems, consists of the following
parts:
— Part 1: Requirements and test methods for electrical automatic control and delay devices
— Part 2: Requirements and test methods for non-electrical automatic control and delay devices
— Part 3: Requirements and test methods for manual triggering and stop devices
— Part 4: Requirements and test methods for container valve assemblies and their actuators
— Part 5: Requirements and test methods for high and low pressure selector valves and their actuators
— Part 6: Requirements and test methods for non-electrical disable devices
— Part 7: Requirements and test methods for nozzles for CO systems
— Part 8: Requirements and test methods for connectors
— Part 9: Requirements and test methods for special fire detectors
— Part 10: Requirements and test methods for pressure gauges and pressure switches
— Part 11: Requirements and test methods for mechanical weighing devices
— Part 12: Requirements and test methods for pneumatic alarm devices
— Part 13: Requirements and test methods for check valves and non-return valves
low pressure systems
— Part 16: Requirements and test methods for odorizing devices for CO
Introduction
It has been assumed in the preparation of this European Standard that the execution of its provisions is
entrusted to appropriately qualified and experienced people.
All pressure data in this European Standard are given as gauge pressures in bar, unless otherwise stated.
5 -2
NOTE 1 bar = 10 N m = 100 kPa.
1 Scope
This European Standard specifies requirements and test methods for mechanical weighing devices for
continuous monitoring of containers of CO -, Inert Gas- or Halocarbon Gas-Fire Extinguishing Installations.
This European Standard does not cover weighing devices for non-transportable containers which are filled
and refilled on site, e.g. CO -low-pressure containers.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
CO -high-pressure installation
fire extinguishing installation in which the CO is stored at ambient temperature
Note 1 to entry: For example, the pressure of the CO in storage is p = 58,6 bar at 21 °C.
2 abs
2.2
CO -low-pressure installation
fire extinguishing installation in which the CO is stored at low temperature, normally – 19 °C to –21 °C
2.3
gross load
mass of a container filled with extinguishing medium including valve and actuator
2.4
fill ratio
mass of extinguishing medium related to the nominal internal volume of a container expressed in kilograms
per litre
2.5
halocarbon gas
extinguishing agent that contains as primary components one or more organic compounds containing one or
more of the elements fluorine, chlorine, bromine or iodine
2.6
halocarbon gas installation
fire extinguishing installation in which the halocarbon gas is stored at ambient temperature
2.7
inert gas
non liquefied gas or mixture of gases which extinguish the fire mainly by reducing the oxygen-concentration
in the protected zone
Note 1 to entry: E.g. Argon, Nitrogen or CO or mixtures of these gases.
2.8
inert gas installation
fire extinguishing installation in which the inert gas is stored at ambient temperature
2.9
net load
mass of the extinguishing medium in a container
3 Product characteristics
3.1 General
3.1.1 Design
A weighing device may be designed for monitoring containers of various sizes, with various fill ratios or with
various gases.
NOTE Different combinations of size, fill ratio (where applicable) and type of gas result in different values for gross
and net load.
For each combination of gross load and net load, which the weighing device is used for, the manufacturer
shall specify:
a) type of gas;
b) nominal internal volume of the container;
c) net load;
d) gross load;
e) fill ratio, if applicable.
A weighing device shall be adjustable to give a loss indication when a mass loss between 5 % and 10 % of the
net load occurs. The loss indication shall be maintained until corrective action is taken.
Normal building movement should not generate a false loss indication.
3.1.2 Object of the test
The test sample shall comply with the documentation (drawings, parts lists, description of functions,
operating and installation instructions) when assessed in accordance with 4.1.2.
3.2 Operational reliability
3.2.1 Function at normal temperature
A weighing device shall respond to a mass loss of between 5 % and 10 % of the net load, when tested in
accordance with 4.2.1.
3.2.2 Function at high and low temperature
A weighing device shall respond to a mass loss of between 5 % and 10 % of the net load, when tested at –
20 °C and + 50 °C in accordance with 4.2.2.
3.2.3 Overload
A weighing device shall respond to a mass loss of between 5 % and 10 % of the net load, when tested in
accordance with 4.2.1.2, after being loaded with twice the maximum gross load in accordance with 4.2.3.
3.3 Durability of operational reliability
3.3.1 Corrosion
A weighing device shall respond to a mass loss of between 5 % and 10 % of the net load, when tested in
accordance with 4.2.1.2, after being subjected to the corrosive atmosphere in accordance with 4.3.1.
4 Testing, assessment and sampling methods
4.1 General
4.1.1 Test conditions
The component shall be assembled for test as specified in the documentation. The tests shall be carried out
at a temperature of (25 ± 10) °C, except when otherwise specified for a particular test.
The tolerance for all test parameters is 5 %, unless otherwise stated.
4.1.2 Object of the test
This test relates to the requirements of 3.1.2.
A visual and measurement check shall be made to determine that the test sample corresponds to the
description in the drawings, parts lists, description of functions, operating and installation instructions.
4.1.3 Test samples and order of tests
For the tests one sample is needed. The order of tests is shown in Table 1.
Table 1 — Order of tests
Order of test Test
1 4.1.2 Object of the test
2 4.2.1 Function at normal temperature
3 4.2.2  Function at high and low temperature
4 4.2.3 Overload
5 4.2.1.2 Function at normal temperature
6 4.3.1 Co
...