EN 1854:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Druckwächter für Gasbrenner und GasgeräteDispositifs de surveillance de pression pour brûleurs à gaz et appareils à gazPressure sensing devices for gas burners and gas burning appliances27.060.20Plinski gorilnikiGas fuel burners23.060.40Pressure regulatorsICS:Ta slovenski standard je istoveten z:EN 1854:2010SIST EN 1854:2010en,fr,de01-november-2010SIST EN 1854:2010SLOVENSKI
STANDARDSIST EN 1854:20061DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1854
May 2010 ICS 23.060.40 Supersedes EN 1854:2006English Version
Pressure sensing devices for gas burners and gas burning appliances
Dispositifs de surveillance de pression pour brûleurs à gaz et appareils à gaz
Druckwächter für Gasbrenner und Gasgeräte This European Standard was approved by CEN on 15 April 2010.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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Gas connections in common use in the various countries . 33Annex B (informative)
Leak-tightness test – volumetric method . 34Annex C (informative)
Leak-tightness test – pressure loss method . 35Annex D (informative)
Conversion of pressure loss into leakage rate . 36Annex E (normative)
Electrical/electronic component fault modes . 37Annex F (normative)
Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC . 38Annex G (normative)
Materials for pressurized parts . 39Annex H (informative)
Additional materials for pressurized parts . 40Annex I (normative)
Requirements for controls used in DC supplied gas burners and gas burning appliances . 41Annex AA (informative)
Manufacturers declaration for EPSDs . 42Annex ZA (informative)
Clauses of this European Standard addressing requirements or provisions of EU-Directives . 43Bibliography . 45 Figures Figure 1 — Differential PSD . 6Figure 2 — Atmospheric PSD . 6Figure 3 — Absolute PSD . 6Figure 4 — EPSD . 7Figure 5 — Step response of EPSD. 8Figure 6 — Clarification of definitions for PSD-M and PSD-S . 9SIST EN 1854:2010

(IEC 60730-2-6:2007, modified) EN 61058-1:2002, Switches for appliances — Part 1: General requirements (IEC 61058-1:2000 + A1:2001, modified) EN 175301-803, Detail Specification: Rectangular connectors — Flat contacts, 0,8 mm thickness, locking screw not detachable EN ISO 75 (all parts), Plastics — Determination of temperature of deflection under load IEC 60730-1:2007, Automatic electrical controls for household and similar use — Part 1: General requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13611:2007 and the following apply. 3.101 pressure sensing device PSD device which senses pressure and provides a signal NOTE Different types of PSDs are given in Figures 1 to 3. SIST EN 1854:2010

Key 1 sensing element
2 inlet 1 3 inlet 2/reference
Figure 1 — Differential PSD
Key 1 sensing element 2 inlet 1 3 reference
Figure 2 — Atmospheric PSD
Key 1 sensing element 2 inlet 1
Figure 3 — Absolute PSD
3.102 set point pressure to which the PSD is adjusted to operate 3.103 switching pressure inlet pressure at which the PSD operates 3.104 set point range declared range of adjustment of the PSD between the highest and lowest set points 3.105 upper switching pressure pressure at which the PSD operates during an increase in pressure 3.106 lower switching pressure pressure at which the PSD operates during a decrease in pressure 3.107 electronic pressure sensing device EPSD assembly of electronic based pressure sensing element and signal conditioner NOTE Figure 4, clarifies the EPSD. SIST EN 1854:2010

Key 1 EPSD 2 Central Unit 3 Electronic pressure sensing element 4 Signal Conditioner 5 Interface 6 Switching Figure 4 — EPSD 3.108 electronic pressure sensing element part of the EPSD, which transforms the signal to be sensed (e.g. pressure) to another physical value (e.g. force, voltage) 3.109 signal conditioner transforms the signal from the sensing element into the output signal of the EPSD NOTE The signal conditioner may consist of functional electronics as well as electronics which cause the sensor output to be classified as class B or C in accordance with EN 13611:2007. 3.110 response time time counted from start of the step change input signal (e.g. pressure) until the output signal (e.g. voltage, current) is within the settling tolerance for the first time NOTE For further information refer to Figure 5.
Key 1
step function (y1) 2 step response (y2) 3 overshoot value
settling tolerance
5 steady state value
6 response time
7 settling time t time Figure 5 — Step response of EPSD 3.111 step response output signal change of a device having a step change input signal 3.112 steady state value value of the output signal after step response input remains constant 3.113 settling tolerance difference between the current output signal and its steady state value declared by the manufacturer 3.114 settling time time counted from start of the step change input signal until the output signal remains within the settling tolerance 3.115 overshoot value biggest deviation between the output signal and its steady state value after step change of the inlet signal exceeding the settling tolerance for the first time 3.116 withstand pressure pressure that is withstood without degraded characteristic after returning below the maximum inlet pressure NOTE The withstand pressure can be equal to maximum inlet pressure. 3.117 deviation difference between the declared or indicated set point and the pressure measured before the endurance test SIST EN 1854:2010

Key1
minimum inlet pressure 2
maximum inlet pressure 3
withstand pressure 4
set point 5
switching pressure (before endurance) 6
switching pressure (after endurance) 7
deviation 8
drift 9
hysteresis 10
lowest set point 11
highest set point 12
set point range X P-inlet/P-differential
Figure 6 — Clarification of definitions for PSD-M and PSD-S SIST EN 1854:2010

a) Clarifications of hysteresis, maximum inlet and withstand pressure b) Clarifications of drift, transfer ratio,linearity and offset Key 1 hysteresis 2 maximum inlet pressure 3 withstand pressure X P-inlet/P-differential Y output signal Key 1
drift 2
transfer ratio 3
linearity 4
offset X pressure Y output signal Figure 7 — Clarification of definitions for EPSD 3.121 transfer ratio positive or negative rotation of the sensor characteristic with the point of rotation as the intersection of the characteristic and the x-axis NOTE For illustration refer to Figure 7. 3.122 linearity linearity is the worst case deviation of straightness of the actual transfer function from the ideal straight line NOTE For illustration refer to Figure 7. 3.123 offset positive or negative deviation of the intersection of the sensor characteristic and the y-axis NOTE For illustration refer Figure 7. 3.124 resolution minimum incremental output change 4 Classification 4.1 Classes of control EN 13611:2007, 4.1 is replaced by the following: SIST EN 1854:2010

EN 13611:2007, 6.6.4.2, a), b) and d). If EN 13611:2007, 6.6.4.2, d) applies (continues to operate) the EPSD shall continue to function in accordance with the performance requirements as specified in Clause 7, especially with 7.101.2. 6.6.4.3 Second fault Shall be according to EN 13611:2007, 6.6.4.3 with the following modification: EN 13611:2007, 6.6.4.3, a) is not applicable. 6.6.4.4 Fault introduced during lock-out or safety- shut-down EN 13611:2007, 6.6.4.4 is not applicable. 6.6.5 Circuit and construction evaluation Shall be according to EN 13611:2007, 6.6.5. 7 Performance 7.1 General EN 13611:2007, 7.1 shall be replaced by the following: Controls shall operate correctly under all combinations of the following:  from the minimum inlet pressure to the maximum inlet pressure,  ambient temperature range from 0 °C to 60 °C or wider limits, if declared by the manufacturer;  in all mounting positions declared by the manufacturer;
 voltage or current range from 85 % to 110 % of the rated supply value or from 85 % of the minimum rated value to 110 % of the maximum rated value. If there is a mounting position(s) declared by the manufacturer where the PSD cannot operate from minimum inlet pressure to the maximum inlet pressure, the range of inlet pressures for that mounting position(s) shall be declared separately. SIST EN 1854:2010
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