BS EN 1434-2:2015+A1:2018
$167.15
Thermal energy meters – Constructional requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 44 |
This European Standard specifies the constructional requirements 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 heat in legal units.
Electrical safety requirements are not covered by this European Standard.
Pressure safety requirements are not covered by this European Standard.
Surface mounted temperature sensors are not covered by this European Standard.
This standard covers meters for closed systems only, where the differential pressure over the thermal load is limited.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 6 | 1 Scope 2 Normative references |
| 7 | 3 Terms and definitions 4 Temperature sensors 4.1 General 4.2 Mechanical design 4.2.1 General 4.2.2 Materials of temperature probe sheath and pocket 4.2.3 Dimensions of direct mounted short probes – Type DS |
| 8 | 4.2.4 Dimensions of direct mounted long probes – Type DL |
| 9 | 4.2.5 Dimensions of pocket mounted long probes – Type PL 4.2.6 Dimensions of temperature pocket |
| 11 | 4.2.7 Design of short probes with respect to installation |
| 12 | 4.2.8 Design of long probes with respect to installation 4.3 Platinum temperature sensor 4.3.1 Specialized definitions for 2 wire temperature probes |
| 13 | 4.3.2 Resistance characteristics 4.3.3 Signal leads |
| 14 | 4.3.4 Temperature sensors for the 2wire method 4.3.5 Temperature sensors for the 4wire method 4.3.6 Thermal response time 4.4 Other temperature sensors |
| 15 | 5 Flow sensors 5.1 Maximum admissible working pressure, PS in bar 5.2 Sizes and dimensions |
| 16 | 5.3 Test signal output 5.4 Adjusting device |
| 17 | 6 Calculators 6.1 Terminals – specification and identification 6.1.1 General 6.1.2 Terminals for signal leads |
| 19 | 6.1.3 Terminals for connection to the mains supply 6.2 Batteries 6.3 Dynamic behaviour 6.4 Test signal output |
| 20 | 6.5 24 h interruption in supply voltage 7 Complete meter 8 Interfaces between sub-assemblies 8.1 General 8.2 Definitions for pulse device interfaces 8.2.1 General |
| 21 | 8.2.2 Electrical connection 8.2.3 Classification of pulse output devices 8.2.4 Timing and electrical parameters for pulse output devices (other than test signals) |
| 22 | 8.2.5 Classification of pulse input devices 8.2.6 Timing and electrical parameter for pulse input devices |
| 23 | 8.2.7 Compatibility 9 Marking and security seals 9.1 Marking 9.1.1 General 9.1.2 Temperature sensor pairs 9.1.3 Pockets 9.1.4 Flow sensor |
| 24 | 9.1.5 Calculator 9.1.6 Complete meter |
| 25 | 9.2 Sites for marking 9.3 Security seals |
| 26 | Annex A (informative)Examples of temperature sensors |
| 37 | Annex B (normative)Input and output test signals |
| 39 | Annex C (informative)Low voltage Power Supply for !thermal energy meters” and their sub-assemblies C.1 Remote supply C.1.1 Voltage (DC or AC) C.1.2 Current available C.1.3 Cabling requirements C.2 Local external DC supply C.2.1 Voltage C.2.2 Other data |
| 40 | C.3 Power supply specifications |
| 41 | Annex ZA Annex ZA(informative)Relationship between this European Standard and the essential requirements of Directive2014/32/EU aimed to be covered |
