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BS EN 1434-4:2022 – TC:2023 Edition

BS EN 1434-4:2022 – TC:2023 Edition

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Tracked Changes. Thermal energy meters – Pattern approval tests

Published By Publication Date Number of Pages
BSI 2023 160
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This document specifies pattern approval tests for thermal energy meters. Thermal energy meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The thermal energy meter indicates the quantity of thermal energy in legal units. This document covers meters for closed systems only, where the differential pressure over the thermal load is limited. This document is not applicable to: – electrical safety requirements; – pressure safety requirements; and – surface mounted temperature sensors.

PDF Catalog

PDF Pages PDF Title
1 30462172
81 A-30423507
82 undefined
88 1 Scope
2 Normative references
89 3 Terms and definitions
4 General
5 Requirements
90 6 Specification of operating conditions
6.1 Rated operating conditions
6.2 Reference conditions
6.3 Reference values for the measurand (RVM)
6.3.1 General
6.3.2 Reference values for the measurand
91 7 Tests and measurements
7.1 General
92 7.2 Test programme
94 7.3 Uncertainty of test equipment and influences of EUT
95 7.4 Performance tests
7.4.1 General
7.4.2 Flow sensor
7.4.2.1 General
7.4.2.2 Flow rates
96 7.4.2.3 Electromagnetic type flow sensors
7.4.2.4 Fast response meters
98 7.4.3 Calculator
7.4.3.1 Heating and cooling applications
99 7.4.3.2 Additional functionalities for smart metering applications
100 7.4.4 Temperature sensors
7.4.4.1 Qualifying immersion depth
101 7.4.4.2 Thermal response time
7.4.4.3 General testing
7.4.4.4 Testing of the influence of pockets
102 7.4.5 Combined sub-assemblies or complete meter
7.5 Dry heat
7.5.1 General
7.5.2 Calculator
7.5.3 Flow sensor
103 7.5.4 Combined sub-assemblies or complete meter
7.6 Cold
7.6.1 General
7.6.2 Calculator
7.6.3 Flow sensor
7.6.4 Combined sub-assemblies or complete meter
104 7.7 Static deviations in supply voltage
105 7.8 Durability test
7.8.1 General
7.8.2 Flow sensor
7.8.2.1 General
106 7.8.2.2 Basic test
107 7.8.2.3 Additional test
108 7.8.2.4 Accelerated Durability test
109 7.8.3 Temperature sensors
110 7.8.4 Combined sub-assemblies or complete meter
7.9 Damp heat
7.9.1 Damp heat cyclic
111 7.9.2 Damp heat steady-state
7.10 Short time mains voltage reduction
112 7.11 Electrical transients
7.11.1 Fast transients (bursts)
113 7.11.2 Surge transients
115 7.12 Electromagnetic fields
7.12.1 Low frequency fields
116 7.12.2 High frequency fields
117 7.13 Electromagnetic field specifically caused by wireless equipment
7.13.1 Electromagnetic field in distant proximity
118 7.13.2 Electromagnetic field in close proximity
119 7.14 Radio frequency amplitude modulated
121 7.15 Electrostatic discharge
7.16 Static magnetic field (fraud protection)
122 7.17 Mains frequency magnetic field
7.18 Internal pressure
7.19 Pressure loss
123 7.20 Electromagnetic emission
7.20.1 General
7.20.2 Conducted emission on power AC lines
7.20.3 Conducted emission on signal and DC power lines
124 7.20.4 Radiated emission
7.21 24 h interruption in the mains power supply voltage
7.22 Flow disturbances
127 7.23 Vibration/mechanical shock
8 Documentation
129 Annex A (informative)Testing procedure for temperature sensor pairs with pockets and without pockets
A.1 Test set-up
A.1.1 General
A.1.2 Requirements of a temperature bath
A.1.2.1 General
A.1.2.2 Temperature distribution
130 A.1.2.3 Liquid
131 A.1.2.4 Test setup
A.2 Test sequence
132 A.3 Calculations
133 Annex B (informative)Checklist for type approvals of thermal energy meters according to EN 1434
152 Annex C (informative)Criteria for a fully developed flow profile
153 Annex D (normative)Asymmetric swirl generator
157 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014/32/EU aimed to be covered

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BS EN 1434-4:2022 - TC
$280.87