EN 54-29 Fire detection and fire alarm systems – Part 29: Multi-sensor fire detectors – Point detectors using a combination of smoke and heat sensors
1 Scope
This European Standard specifies requirements, test methods and performance criteria for point-type multi- sensor fire detectors for use in fire detection systems installed in buildings (see EN 54-1:2011), incorporating in one mechanical enclosure at least one optical or ionization smoke sensor and at least one heat sensor. The overall fire detection performance is determined utilizing the combination of the detected phenomena.
This European Standard provides for the assessment and verification of constancy of performance (AVCP) of point detectors using a combination of smoke and heat sensors to this European Standard.
Point detectors using a combination of smoke and heat sensors having special characteristics suitable for the detection of specific fire risks are not covered by this European Standard. The performance requirements for any additional functions are beyond the scope of this European Standard (e.g. additional features or enhanced functionality for which this European Standard does not define a test or assessment method).
NOTE Certain types of detector contain radioactive materials. The national requirements for radiation protection differ from country to country and they are not specified in this European Standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 54-1:2011, Fire detection and fire alarm systems – Part 1: Introduction
EN 54-5:2000, Fire detection and fire alarm systems – Part 5: Heat detectors – Point detectors
EN 54-5:2000/A1:2002, Fire detection and fire alarm systems – Part 5: Heat detectors – Point detectors
EN 50130-4:2011, Alarm systems – Part 4: Electromagnetic compatibility – Product family standard: Immunity requirements for components of fire, intruder, hold up, CCTV, access control and social alarm systems
EN 60068-1:1994, Environmental testing – Part 1: General and guidance (IEC 60068-1:1988)
EN 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold (IEC 60068-2-1:2007)
EN 60068-2-6:2008, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal) (IEC 60068-2¬6:2008)
EN 60068-2-27:2009, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock (IEC 60068-2¬27:2009)
EN 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic (12 h + 12 h cycle) (IEC 60068-2-30:2005)
EN 60068-2-42:2003, Environmental testing – Part 2-42: Tests – Test Kc: Sulphur dioxide test for contacts and connections (IEC 60068-2-42:2003)
EN 60068-2-78:2013, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state (IEC 60068-2-78:2012)
ISO 209:2007, Aluminium and aluminium alloys — Chemical composition
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 54-1:2011 and the following apply.
3.1
non-volatile memory
memory element which does not require the presence of an energy source for the retention of its content
3.2
site specific data
alterable data required for the detector to operate in a defined detector configuration
3.3
smoke response value
aerosol density in the proximity of a test specimen at the moment that it generates a reference signal in a smoke tunnel
3.4
heat response value
temperature in the proximity of a test specimen at the moment that it generates a reference signal in a heat tunnel
3.5
sensor
transducer, which is assigned to be receptive to one fire phenomenon and converts its information into an electrical output
4 Requirements
4.1 General
In order to comply with this standard, the detector shall meet the requirements of Clause 4, which shall be verified by visual inspection, engineering assessment or shall be tested as described in Clause 5 and shall meet the requirements of the tests.
4.2 Nominal activation conditions/sensitivity
4.2.1 Individual alarm indication
The detector shall be provided with an integral red visual indicator, by which the individual detector that released an alarm, can be identified, until the alarm condition is reset. Where other conditions of the detector can be visually indicated, they shall be clearly distinguishable from the alarm indication, except when the detector is switched into a service mode. For detachable detectors, the indicator may be integral with the base or the detector head. The visual indicator shall be visible from a distance of 6 m directly below the detector, in an ambient light intensity up to 500 lux when assessed as described in 5.2.1.
NOTE The alarm condition is reset manually at the control and indicating equipment (see EN 54-2:1997 as amended by EN 54-2:1997/A1:2006).
4.2.2 Response to slowly developing fires
The detector may incorporate provision for “drift compensation”, for example to compensate for sensor drift due to the build up of dirt in the detector, If such drift compensation is included, then it shall not lead to a significant reduction in the detector’s sensitivity to slowly developing fires when assessed as specified in 5.2.2.
4.2.3 Repeatability of smoke response
The detector shall have stable behaviour with respect to its sensitivity to smoke after a number of alarm conditions. To confirm this, the detector shall be assessed in accordance with 5.2.3.
4.2.4 Directional dependence of smoke response
The sensitivity of the detector to smoke shall not be unduly dependent on the direction of airflow around it. To confirm this, the detector shall be assessed in accordance with 5.2.4.
4.2.5 Directional dependence of heat response
The heat sensitivity of the detector shall not be unduly dependent on the direction of airflow around it. To confirm this, the detector shall be assessed in accordance with 5.2.5.
4.2.6 Lower limit of heat response
The detector shall not be more sensitive to heat alone, without the presence of smoke, than is permitted in EN 54-5:2000 as amended by EN 54-5:2000/A1:2002. To confirm this, the detector shall be assessed in accordance with 5.2.6.
4.2.7 Reproducibility of smoke response
The sensitivity of the detector to smoke shall not vary unduly from specimen to specimen. To confirm this, the detector shall be assessed in accordance with 5.2.7.
4.2.8 Reproducibility of heat response
The heat sensitivity of the detector shall not vary unduly from specimen to specimen. To confirm this, the detector shall be assessed in accordance with 5.2.8.
4.2.9 Air movement
The sensitivity of the detector shall not be unduly affected by the rate of the airflow and that it is not unduly prone to false alarms in draughts or in short gusts. To confirm this, the detector shall be assessed in accordance with 5.2.9.
4.2.10 Dazzling
The sensitivity of the detector shall not be unduly influenced by the close proximity of artificial light sources. To confirm this, the detector shall be assessed in accordance with 5.2.10. This test is only applicable to detectors using optical smoke sensors, as ionization chamber detectors are considered unlikely to be influenced.
4.3 Operational reliability
4.3.1 Connection of ancillary devices
Where the detector provides for connections to ancillary devices (e.g. remote indicators, control relays), open- or short-circuit failures of these connections shall not prevent the correct operation of the detector.
4.3.2 Monitoring of detachable detectors
For detachable detectors, means shall be provided for a remote monitoring system (e.g. the control and indicating equipment) to detect the removal of the head from the base, in order to give a fault signal.
4.3.3 Manufacturer’s adjustments
It shall not be possible to change the manufacturer’s settings except by special means (e.g. the use of a special code or tool) or by breaking or removing a seal.
4.3.4 On-site adjustment of response behaviour
If there is provision for on-site adjustment of the response behaviour of the detector then:
a) for each setting at which the manufacturer claims compliance with this standard, the detector shall comply with the requirements of this standard, and access to the adjustment means shall only be possible by the use of a code or special tool or by removing the detector from its base or mounting;
b) any setting(s) at which the manufacturer does not claim compliance with this standard, shall only be accessible by the use of a code or special tool, and it shall be clearly marked on the detector or in the associated data, that if these setting(s) are used, the detector does not comply with the standard.
These adjustments may be carried out at the detector or at the control and indicating equipment.
4.3.5 Protection against the ingress of foreign bodies
The detector shall be so designed that a sphere of diameter (1,3 ± 0,05) mm cannot pass into the smoke sensor chamber(s).
NOTE This requirement is intended to restrict the access of insects into the sensitive parts of the detector. It is known that this requirement is not sufficient to prevent the access of all insects; however, it is considered that extreme restrictions on the size of access holes may introduce the danger of clogging by dust etc. It may therefore be necessary to take other precautions against false alarms due to the entry of small insects.
4.3.6 Software controlled detectors
4.3.6.1 General
For detectors which rely on software control in order to fulfil the requirements of this standard, the requirements of 4.3.6.2, 4.3.6.3 and 4.3.6.4 shall be met.
4.3.6.2 Software documentation 4.3.6.2.1 Design overview
The manufacturer shall submit documentation which gives an overview of the software design. This documentation shall be in sufficient detail for the design to be inspected for compliance with this standard and shall include at least the following:
a) a functional description of the main program flow (e.g. as a flow diagram or structogram) including:
4.3.6.2.2 Design detail
The manufacturer shall have available detailed design documentation, which only needs to be provided if required by the testing authority. It shall comprise at least the following:
4.3.6.3 Software design
In order to ensure the reliability of the detector, the following requirements for software design shall apply:
The program necessary to comply with this standard and any pre-set data, such as manufacturer’s settings, shall be held in non-volatile memory. Writing to areas of memory containing this program and data shall only be possible by the use of some special tool or code and shall not be possible during normal operation of the detector.
Site-specific data shall be held in memory which will retain data for at least two weeks without external power to the detector, unless provision is made for the automatic renewal of such data, following loss of power, within 1 h of power being restored.
4.4 Tolerance to supply parameters
4.4.1 Variation in supply parameters
Within the specified range(s) of the supply parameters, the sensitivity of the detector shall not be unduly dependent on these parameters (e.g. voltage). To confirm this, the detector shall be assessed in accordance with 5.4.1.
4.5 Performance parameters under fire conditions 4.5.1 Fire sensitivity
The detector shall have adequate sensitivity to incipient type fires that may occur in buildings. To confirm this, the detector shall be assessed in accordance with 5.5.1.
4.6 Durability of nominal activation conditions/sensitivity
4.6.1 Temperature resistance
4.6.1.1 Dry heat (operational)
The detector shall function correctly assessed in accordance with 5.6.1.1.
4.6.1.2 Cold (operational)
at high ambient temperatures. To
confirm this, the detector shall be
at low ambient temperatures. To confirm this, the detector shall be
The detector shall function correctly assessed in accordance with 5.6.1.2.
4.6.2 Humidity resistance
4.6.2.1 Damp heat, cyclic (operational)
The detector shall function correctly at a high level of relative humidity with short period of condensation. To confirm this, the detector shall be assessed in accordance with 5.6.2.1.
4.6.2.2 Damp heat steady-state (endurance)
The detector shall be capable of withstanding long term exposure to a high level of continuous humidity. To confirm this, the detector shall be assessed in accordance with 5.6.2.2.
4.6.3 Shock and vibration resistance
4.6.3.1 Shock (operational)
The detector shall function correctly when submitted to mechanical shocks which are likely to occur in the service environment. To confirm this, the detector shall be assessed in accordance with 5.6.3.1.
4.6.3.2 Impact (operational)
The detector shall function correctly when submitted to mechanical impacts which it may sustain in the normal service environment. To confirm this, the detector shall be assessed in accordance with 5.6.3.2.
4.6.3.3 Vibration, sinusoidal (operational)
The detector shall function correctly when submitted to vibration at levels appropriate to its normal service environment. To confirm this, the detector shall be assessed in accordance with 5.6.3.3.
4.6.3.4 Vibration, sinusoidal (endurance)
The detector shall be capable of withstanding long exposure to vibration at levels appropriate to the service environment. To confirm this, the detector shall be assessed in accordance with 5.6.3.4.
4.6.4 Electrical stability
4.6.4.1 EMC, immunity (operational)
The detector shall operate correctly when submitted to electromagnetic interference. To confirm this, the detector shall be assessed in accordance with 5.6.4.1.
4.6.5 Resistance to chemical agents 4.6.5.1 SO2 corrosion (endurance)
The detector shall be capable of withstanding the corrosive effects of sulphur dioxide as an atmospheric pollutant. To confirm this, the detector shall be assessed in accordance with 5.6.5.1.
5 Test and assessment and sampling methods 5.1 General
5.1.1 Atmospheric conditions for tests
Unless otherwise stated in a test procedure, the testing shall be carried out after the test specimen has been allowed to stabilize in the standard atmospheric conditions for testing as described in EN 60068-1:1994 as follows:
5.1.2 Operating conditions for tests
If a test method requires a specimen to be operational, then the specimen shall be connected to a suitable supply and monitoring equipment with characteristics as required by the manufacturer’s data. Unless otherwise specified in the test method, the supply parameters applied to the specimen shall be set within the manufacturer’s specified range(s) and shall remain substantially constant throughout the tests. The value chosen for each parameter shall normally be the nominal value, or the mean of the specified range detectors) to allow an alarm or fault signal to be recognized. The details of the supply and monitoring equipment and the alarm criteria used shall be given in the test report.
5.1.3 Mounting arrangements
The specimen shall be mounted by its normal means of attachment and in its normal orientation in accordance with the manufacturer’s instructions. If these instructions describe more than one method of mounting, or more than one acceptable orientation, for each test the method evaluated to be most unfavourable shall be chosen.
5.1.4 Tolerances
Unless otherwise stated, the tolerances for the environmental test parameters shall be as given in the basic reference standards for the test (e.g. the relevant part of EN 60068).
If a requirement or test procedure does not specify a tolerance or deviation limits, then deviation limits of ± 5 % shall be applied.
5.1.5 Measurement of smoke response value
The specimen, for which the smoke response value is to be measured, shall be installed in the smoke tunnel, described in Annex A, in its normal operating position, by its normal means of attachment. The orientation of the specimen, relative to the direction of airflow, shall be the least sensitive orientation, as determined in the directional dependence test (5.2.4), unless otherwise specified in the test procedure.
Before commencing each measurement the smoke tunnel shall be purged to ensure that the tunnel and the specimen are free from the test aerosol.
The air velocity in the proximity of the specimen shall be (0,2 ± 0,04) m s-1 during the measurement, unless otherwise specified in the test procedure.
Unless otherwise specified in the test procedure, the air temperature in the tunnel shall be (23 ± 5) °C and shall not vary by more than 5 K for all the measurements on a particular detector type.
The specimen shall be connected to its supply and monitoring equipment as described in 5.1.2, and shall be allowed to stabilize for a period of at least 15 min, unless otherwise specified by the manufacturer.
5.1.6 Measurement of heat response value
The specimen for which the heat response value is to be measured shall be installed in a heat tunnel, as specified in Annex D, in its normal operating position, by its normal means of attachment. The orientation of the specimen, relative to the direction of airflow, shall be the least sensitive one, as determined in the directional dependence test (see 5.2.5), unless otherwise specified in the test procedure.
The specimen shall be connected to its supply and monitoring equipment as specified in 5.1.2, and be allowed to stabilize for at least 15 min, unless otherwise specified by the manufacturer.
Before the test, the temperature of the air stream and the specimen shall be stabilized to (25 ± 2) °C. The air stream shall be maintained at a constant mass flow equivalent to a velocity of (0,8 ± 0,1) m/s at 25 °C.
5.1.7 Provision for tests
The following shall be provided for testing compliance with this standard:
5.2.8 should also represent the production mean, and that the limits specified in the reproducibility tests should also be applicable to the manufacturer’s production.
5.1.8 Test schedule
The specimens shall be tested according to the following test schedule (see Table 1). After the reproducibility test, the six least sensitive specimens to smoke (i.e. those with the highest smoke response values) shall be numbered 17 to 22, by decreasing sensitivity, and the others shall be numbered 1 to 16 arbitrarily.
5.2 Nominal activation conditions/sensitivity 5.2.1 Individual alarm indication
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for individual alarm indication as specified in 4.2.1.
The specimen shall be checked for adequate visibility in an ambient light intensity of 500 lux.
5.2.2 Response to slowly developing fires
The behaviour of the multi-sensor fire detector to slowly developing fires shall be assessed to meet the requirements of 4.2.2.
Since it is not practical to make tests with very slow increases in smoke density, the assessment of the detector’s response to slow increases in smoke density shall be made by analysis of the circuit/software, and/or physical tests and simulations.
The detector shall be deemed to meet the requirements of 4.2.2 if this assessment shows that:
5.2.3 Repeatability of smoke response
5.2.3.1 Object
To show that the detector has stable behaviour with respect to its sensitivity to smoke even after a number of alarm conditions.
5.2.3.2 Test procedure
The smoke response value of the specimen to be tested shall be measured as described in 5.1.5 six times.
The specimen’s orientation relative to the direction of airflow is arbitrary, but it shall be the same for all six measurements.
5.2.3.3 Requirements
5.2.4 Directional dependence of smoke response
5.2.4.1 Object
To confirm that the sensitivity of the detector to smoke is not unduly dependent on the direction of airflow around the detector.
5.2.4.2 Test procedure
The smoke response value of the specimen to be tested shall be measured eight times as described in 5.1.5, the specimen being rotated 45° about its vertical axis between each measurement, so that the measurements are taken for eight different orientations relative to the direction of air flow.
The orientations, for which the maximum and minimum smoke response values were measured, shall be noted.
In the following tests the orientation for which the maximum smoke response value was measured is referred to as the least sensitive orientation for smoke, and the orientation for which the minimum smoke response value was measured is referred to as the most sensitive orientation for smoke.
5.2.4.3 Requirements
a) The ratio of the smoke response values ymax: ymin or mmax: mmin shall be not greater than 1,6.
b) The lower smoke response value ymin shall be not less than 0,2 or mmin shall be not less than 0,05 dB m-1.
5.2.5 Directional dependence of heat response
5.2.5.1 Object of test
To confirm that the heat sensitivity of the detector is not unduly dependent on the direction of airflow around the detector.
5.2.5.2 Test procedure
The heat response value of the specimen shall be tested eight times as specified in 5.1.6 at a rate of rise of air temperature of 10 K/min, the specimen being rotated about a Lower limit of heat sensitivity
5.2.6.1 Object of the test
To confirm that detectors are not more sensitive to heat alone, without the presence of smoke, than is permitted in EN 54-5:2000 as amended by EN 54-5:2000/A1:2002.
5.2.6.2 Test procedure
Measure the heat response value of the specimen to be tested, in its most sensitive orientation, using the methods described in EN 54-5:2000, 5.3 and 5.4, as amended by EN 54-5:2000/A1:2002. For the purposes of these tests, the test parameters for Class A1 detectors according to EN 54-5:2000 as amended by EN 54-5:2000/A1:2002 shall be used.
5.2.6 Reproducibility of smoke response
5.2.7.1 Object
To show that the sensitivity of the detector to smoke does not vary unduly from specimen to specimen and to establish smoke response value data for comparison with the smoke response values measured after the environmental tests.
5.2.7 Reproducibility of heat response
5.2.8.1 Object of the test
To show that the heat sensitivity of the detector does not vary unduly from specimen to specimen and to establish heat response value data for comparison with the heat response values measured after the environmental tests.
5.2.9 Air movement
5.2.9.1 Object of test
To show that the sensitivity of the detector is not unduly affected by the rate of the air flow, and that it is not unduly prone to false alarms in draughts or in short gusts.
5.2.10 Dazzling
5.2.10.1 Object of test
To show that the sensitivity of the detector is not unduly influenced by the close proximity of artificial light sources. This test is only applicable to detectors using optical smoke sensors, as ionization chamber detectors are considered unlikely to be influenced.
5.2.10.2 Test procedure
Install the dazzling apparatus, described in Annex E in the smoke tunnel described in Annex A. Install the specimen in the dazzling apparatus in the least sensitive orientation and connect it to its supply and monitoring equipment. Then apply the following test procedure:
5.3 Operational reliability
5.3.1 Connection of ancillary devices
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for the connection of ancillary devices specified in 4.3.1.
5.3.2 Monitoring of detachable detectors
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for the monitoring of detachable detectors specified in 4.3.2.
5.3.3 Manufacturer’s adjustments
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for manufacturer’s adjustments specified in 4.3.3.
5.3.4 On-site adjustment of behaviour
A visual inspection of a specimen shall be conducted to verify that the detector meets the requirements for on- site adjustment of response behaviour specified in 4.3.4.
5.3.5 Protection against the ingress of foreign bodies
An inspection of a specimen shall be conducted to verify that the detector meets the requirements for the protection against the ingress of foreign bodies specified in 4.3.5.
5.3.6 Software controlled devices
For detectors that rely on software for their operation, an assessment of the documentation provided by the manufacturer shall be conducted to verify that the device complies with the requirements specified in 4.3.6.
5.4 Tolerance to supply parameters 5.4.1 Variation in supply parameters
5.4.1.1 Object
To show that, within the specified range(s) of the supply parameters (e.g. voltage), the sensitivity of the detector is not unduly dependent on these parameters.
5.5 Performance parameters under fire conditions 5.5.1 Fire sensitivity
5.5.1.1 Object
To show that the detector has adequate sensitivity to a broad spectrum of fire types as required for general application in fire detection systems for buildings.
5.5.1.2 Principle
The specimens are mounted in a standard fire test room (see Annex G) and are exposed to a series of test fires designed to produce smoke and heat.
5.5.1.3.2 Test Fires
The specimens shall be subjected to six test fires, TF1, TF2, TF3, TF4, TF5 and TF8 as described in Annex H, Annex I, Annex J, Annex K, Annex L, Annex M including the type, quantity and arrangement of the fuel and the method of ignition along with the end of test condition and the required profile curve limits.
In order to be a valid test fire, the development of the fire shall be such that the profile curves of m against y, and m against time t fall within the specified limits, up to the time when all of the specimens have generated an alarm signal or the end of test condition is reached, whichever is the earlier. If these conditions are not met then the test is invalid and shall be repeated. It is permissible, and may be necessary, to adjust the quantity, condition (e.g. moisture content) and arrangement of the fuel to obtain valid test fires.
5.5.1.3.3 Mounting of the specimens
The six specimens (Nos. 17, 18, 19, 20, 21, 22) shall be mounted on the fire test room ceiling in the designated area (see Annex G). The specimens shall be mounted in accordance with the manufacturer’s instructions. The specimens 19, 20, 21 and 22 shall be mounted in the least sensitive orientation for smoke and the specimens 17 and 18 in the least sensitive orientation for heat relative to an assumed airflow from the centre of the room to the specimen.
Each specimen shall be connected to its supply and monitoring equipment, as described in 5.1.2, and shall be allowed to stabilize in its quiescent condition before the start of each test fire.
Detectors which dynamically modify their sensitivity in response to varying ambient conditions, may require special reset procedures and/or stabilization times. The manufacturer’s guidance should be sought in such cases to ensure that the state of the detectors at the start of each test is representative of their normal quiescent state.
5.5.1.3.4 Initial conditions
Before each test fire the room shall be ventilated with clean air until it is free from smoke and so that the conditions listed below can be obtained.
The ventilation system shall then be switched off and all doors, windows and other openings shall be closed. The air in the room shall then be allowed to stabilize, and the following conditions shall be obtained before the test is started:
— Air temperature: T = (23 ± 5) °C;
— Air movement: negligible;
— Smoke density (ionization): y < 0,05;
— Smoke density (optical): m < 0,02 dB m 1;
The stability of the air and temperature gradients affect the flow of smoke within the room. This is particularly important for test fires, which produce low thermal lift for the smoke (e.g. TF2, TF3 and TF8). The difference between the temperature near the floor and the ceiling should therefore be < 2 K, and local heat sources that can cause convection currents (e.g. lights and heaters) should be avoided. If it is necessary for people to be in the room at the beginning of a test fire, they should leave as soon as possible, taking care to produce the minimum disturbance to the air.
The alarm signal given by the supply and monitoring equipment shall be taken as the indication that a specimen has responded to the test fire.
The time of response of each specimen shall be recorded along with the fire parameters y, m and AT at the moment of response.
5.5.1.4 Requirements
All six specimens shall generate an alarm signal, in each test fire, before the specified end of test condition is reached.
5.6 Durability of nominal activation conditions/sensitivity 5.6.1 Temperature resistance 5.6.1.1 Dry heat (operational)
5.6.1.1.1 Object
To demonstrate the ability of the detector to function correctly at high ambient temperatures appropriate to the anticipated service environment.
5.6.1.2 Cold (operational)
5.6.1.2.1 Object
To demonstrate the ability of the detector to function correctly at low ambient temperatures appropriate to the anticipated service environment.
5.6.1.2.2 Test procedure
5.6.1.2.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-1:2007, Test Ab and as described below.
5.6.1.2.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.1.2.2.3 Conditioning
The following conditioning shall be applied:
— Temperature: (-10 ± 3) °C;
— Duration: 16 h.
NOTE Test Ab specifies rates of change of temperature of < 1 K min-1 for the transitions to and from the conditioning temperature.
5.6.1.2.2.4 Measurement during conditioning
The specimen under test shall be monitored for alarm or fault signals.
5.6.1.2.2.5 Final measurements
After a recovery period of between 1 h and 2 h at standard atmospheric conditions (see 5.1.1), the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall be designated Tmin.
5.6.2.1 Damp heat, cyclic (operational)
5.6.2.1.1 Object
To demonstrate the ability of the detector to function correctly at high relative humidity, with condensation, which can occur for short periods in the anticipated service environment.
5.6.2.1.2 Test procedure
5.6.2.1.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-30:2005, using the Variant 1 test cycle and controlled recovery conditions, and as described below.
5.6.2.1.2.2 State of the specimen during conditioning
The specimen to be tested shall be mounted as described in 5.1.3 and shall be connected to supply and monitoring equipment as described in 5.1.2.
5.6.2.1.2.3 Conditioning
The following severity of conditioning shall be applied:
— Lower temperature: (25 ± 3) °C
— Upper temperature: (40 ± 2) °C
— Relative Humidity:
— at lower temperature > 95 %
— at upper temperature (93 ± 3) %
— Number of cycles 2
5.6.2.1.2.4 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
5.6.2.1.2.5 Final measurements
After a recovery period of between 1 h and 2 h at standard atmospheric conditions (see 5.1.1), the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall be designated Tmin.
5.6.2.2 Damp heat, steady-state (endurance)
5.6.2.2.1 Object
To demonstrate the ability of the detector to withstand the long term effects of humidity (e.g. changes in electrical properties of materials, chemical reactions involving moisture, galvanic corrosion, etc.) in the service environment.
5.6.2.2.2 Test procedure
5.6.2.2.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-78:2013, Test Cab, and as described below.
5.6.2.2.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 but shall not be supplied with power during the conditioning.
5.6.2.2.2.3 Conditioning
5.6.2.2.2.4 Final measurements
After a recovery period of between 1 h and 2 h at standard atmospheric conditions (see 5.1.1), the smoke response value of the specimen shall be measured as described in
5.6.2.2.3 Requirements
5.6.3 Shock and vibration resistance
5.6.3.1 Shock (operational)
5.6.3.1.1 Object
To demonstrate the immunity of the detector to mechanical shocks which are likely to occur, albeit infrequently, in the anticipated service environment.
5.6.3.1.2 Test procedure
5.6.3.1.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-27:2009, Test Ea, for a half sine wave pulse, but with the peak acceleration related to specimen mass as indicated below.
5.6.3.1.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 to a rigid fixture, and shall be connected to its supply and monitoring equipment as described in 5.1.2.
5.6.3.1.2.3 Conditioning
5.6.3.1.2.4 Measurements during conditioning
The specimen shall be monitored during the conditioning period and for a further 2 min to detect any alarm or fault signals.
5.6.3.1.2.5 Final measurements
After the conditioning the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall be designated Tmin.
5.6.3.2 Impact (operational)
5.6.3.2.1 Object
To demonstrate the immunity of the detector to mechanical impacts upon its surface, which it may sustain in the normal service environment, and which it can reasonably be expected to withstand.
5.6.3.2.2 Test procedure
5.6.3.2.2.1 Apparatus
The test apparatus shall consist of a swinging hammer incorporating a rectangular-section aluminium alloy head (Aluminium alloy Al Cu4 Si Mg complying with ISO 209:2007, solution treated and precipitation treated condition) with the plane impact face chamfered to an angle of 60° to the horizontal, when in the striking position (i.e. when the hammer shaft is vertical). The hammer head shall be (50 ± 2,5) mm high, (76 ± 3,8) mm wide and (80 ± 4) mm long at mid height as shown in Figure F.1. A suitable apparatus is described in Annex F.
5.6.3.2.2.2 State of the specimen during conditioning
The specimen shall be rigidly mounted to the apparatus by its normal mounting means and shall be positioned so that it is struck by the upper half of the impact face when the hammer is in the vertical position (i.e. when the hammerhead is moving horizontally). The azimuthal direction and position of impact, relative to the specimen shall be chosen as that most likely to impair the normal functioning of the specimen.
The specimen shall be connected to its supply and monitoring equipment as described in 5.1.2.
5.6.3.2.2.3 Conditioning
5.6.3.2.2.4 Measurements during conditioning
The specimen shall be monitored during the conditioning period and for a further 2 min to detect any alarm or fault signals.
5.6.3.2.2.5 Final measurements
After the conditioning the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall be designated Tmin.
5.6.3.3 Vibration, sinusoidal (operational)
5.6.3.3.1 Object
To demonstrate the immunity of the detector to vibration at levels considered appropriate to the normal service environment.
5.6.3.3.2 Test procedure 5.6.3.3.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-6:2008, Test Fc, and as described below.
5.6.3.3.2.2 State of the specimen during conditioning
The specimen shall be mounted on a rigid fixture as described in 5.1.3 and shall be connected to its supply and monitoring equipment as described in 5.1.2. The vibration shall be applied in each of three mutually perpendicular axes, in turn. The specimen shall be mounted so that one of the three axes is perpendicular to its normal mounting plane.
5.6.3.3.2.3 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any alarm or fault signals.
5.6.3.3.2.4 Final measurements
The final measurements, as specified in 5.6.3.4.2.4, are normally made after the vibration endurance test and shall only be made here if the operational test is conducted in isolation.
5.6.3.4.1 Object
To demonstrate the ability of the detector to withstand the long term effects of vibration at levels appropriate to the service environment.
5.6.3.4.2 Test procedure 5.6.3.4.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-6:2008 Test Fc, and as described below.
5.6.3.4.2.2 State of the specimen during conditioning
The specimen shall be mounted on a rigid fixture as described in 5.1.3, but shall not be supplied with power during conditioning. The vibration shall be applied in each of three mutually perpendicular axes, in turn. The specimen shall be mounted so that one of the three axes is perpendicular to its normal mounting axis.
5.6.3.4.2.3 Conditioning
5.6.3.4.2.4 Final measurements
After the conditioning the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall be designated Tmin.
5.6.4 Electrical stability
5.6.4.1 Electromagnetic Compatibility (EMC), Immunity tests (operational) 5.6.4.1.1 Object
To demonstrate the immunity against electromagnetic disturbances.
5.6.4.1.2 Test procedure
5.6.4.1.2.1 References
The EMC immunity tests shall be carried out, as described in EN 50130-4:2011.
5.6.4.1.2.2 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3. and shall be connected to its supply and monitoring equipment as described in 5.1.2.
5.6.4.1.2.3 Conditioning
The following EMC immunity tests shall be carried out:
a) Electrostatic discharge;
b) Radiated electromagnetic fields;
c) Conducted disturbances induced by electromagnetic fields;
d) Fast transient bursts;
e) Slow high energy voltage surges.
5.6.4.1.2.4 Final measurement
After the conditioning the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3. It shall not be supplied with power during the conditioning, but it shall have untinned copper wires, of the appropriate diameter, connected to sufficient terminals, to allow the final measurement to be made, without making further connections to the specimen.
5.6.5.1.2.1 Conditioning
Immediately after the conditioning, the specimen shall be subjected to a drying period of 16 h at (40 ± 2) °C, < 50 % RH, followed by a recovery period of at least 1 h at the standard laboratory conditions. After this, the smoke response value of the specimen shall be measured as described in 5.1.5.
The greater of the smoke response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated ymax or mmax, and the lesser shall be designated ymin or mmin.
Then the heat response value of the specimen shall be tested as specified in 5.1.6 at a rate of rise of air temperature of 20 K/min.
The greater of the heat response value measured in this test and that measured for the same specimen in the reproducibility test shall be designated Tmax, and the lesser shall be designated Tmin.
5.6.5.1.2 Requirements
6 Assessment and verification of constancy of performance (AVCP)
6.1 General
The compliance of the point detectors using a combination of smoke and heat sensors with the requirements of this Standard and with the performances declared by the manufacturer in the DoP shall be demonstrated by:
— determination of product type,
— factory production control by the manufacturer, including product assessment.
The manufacturer shall always retain the overall control and shall have the necessary means to take responsibility for the conformity with its declared performance(s).
6.2 Type testing 6.2.1 General
All performances related to characteristics included in this standard shall be determined when the manufacturer intends to declare the respective performances unless the standard gives provisions for declaring them without performing tests. (e.g. use of previously existing data, CWFT and conventionally accepted performance).
Assessment previously performed in accordance with the provisions of this standard, may be taken into account provided that they were made to the same or a more rigorous test method, under the same AVCP system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question.
NOTE 1 Same AVCP system means testing by an independent third party under the responsibility of a notified product certification body.
For the purpose of assessment manufacturer’s products may be grouped into families where it is considered that the results for one or more characteristics from any one product within the family are representative for that same characteristics for all products within that same family.
NOTE 2 Products may be grouped in different families for different characteristics.
Reference to the assessment method standards should be made to allow the selection of a suitable representative sample.
In addition, the determination of the product type shall be performed for all characteristics included in the standard for which the manufacturer declares the performance:
— at the beginning of the production of a new or modified point detectors using a combination of smoke and heat sensors (unless a member of the same product range), or
— at the beginning of a new or modified method of production (where this may affect the stated properties); or
they shall be repeated for the appropriate characteristic(s), whenever a change occurs in the design of the point detector using a combination of smoke and heat sensors, in the raw material or in the supplier of the components, or in the method of production (subject to the definition of a family), which would affect significantly one or more of the characteristics.
Where components are used whose characteristics have already been determined, by the component manufacturer, on the basis of assessment methods of other product standards, these characteristics need not be re-assessed. The specifications of these components shall be documented.
Products bearing regulatory marking in accordance with appropriate harmonized European specifications may be presumed to have the performances declared in the DoP, although this does not replace the responsibility on the manufacturer to ensure that the point detector using a combination of smoke and heat sensors as a whole is correctly manufactured and its component products have the declared performance values.
6.2.2 Test samples, testing and compliance criteria
The number of samples of point detectors using a combination of smoke and heat sensors to be tested/assessed shall be in accordance with Table 3.