BS EN 1434-2:1997:2003 Edition
$167.15
Heat meters – Constructional requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2003 | 38 |
Electrical safety requirements are not covered by this standard.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 6 | Foreword Foreword to amendment A1 Contents |
| 9 | 1 Scope 2 Normative references 3 Temperature sensors 3.1 General Table 1 – Tolerances 3.2 Mechanical design |
| 10 | Figure 1 – Temperature probes — Type DS |
| 11 | Figure 2 – Temperature probes — Type DL (head or cable) |
| 12 | Figure 3 – Temperature probes — Type PL (head or cable) |
| 13 | Figure 4 – Temperature pocket |
| 14 | 3.3 Platinum temperature sensor Figure 5 – Temperature probe with permanently connected signal leads Figure 6 – Head sensor temperature probe |
| 15 | Table 2 – Maximum lengths of leads for Pt 100 temperature sensors |
| 16 | 3.4 Other temperature sensors 4 Flow sensor 4.1 Maximum admissible working pressure, MAP 4.2 Sizes and dimensions |
| 17 | Table 3 – Dimensions Table 4 – Threaded end connections — Range of size and minimum thread lengths in mm 4.3 Test signal output 4.4 Adjusting device |
| 18 | 5 Calculators 5.1 Mechanical dimensions for calculators for domestic use 5.2 Terminals — Specification and identification Figure 7 – Outline of the dimensions |
| 19 | Figure 8 – Maximum dimensions in mm |
| 20 | Table 5 – Numbering of terminals |
| 21 | Table 6 – Numbering and marking of the mains terminals 5.3 Batteries 5.4 Dynamic behaviour 5.5 Test signal output 5.6 24 hours interruption in supply voltage 6 Complete meter 7 Interfaces between sub-assemblies 7.1 Definitions for pulse device interfaces |
| 22 | Table 7 – Timing and electrical parameters |
| 23 | Table 8 – Timing and electrical parameters Table 9 – Compatibility 8 Marking and security seals 8.1 Marking |
| 25 | 8.2 Sites for marking 8.3 Security seals |
| 26 | Annex A (informative) Examples of temperature sensors |
| 27 | Figure A.1 – Temperature probe — direct mounted — short — Type DS-cable |
| 28 | Figure A.2 – Temperature probe — direct mounted — long — Type DL-head |
| 29 | Figure A.3 – Temperature probe — direct mounted — long — Type DL-cable |
| 30 | Figure A.4 – Temperature probe — pocket mounted — Type PL-head |
| 31 | Figure A.5 – Temperature probe — pocket mounted — Type PL-cable |
| 32 | Figure A.6 – Temperature probe boss and sealing ring |
| 33 | Figure A.7 – Threaded pipe fitting G1/2B, G3/4B and G1B sizes |
| 34 | Figure A.8 – Installation recommendations |
| 35 | Annex B (normative) Input and output test signals Figure B.1 – Signal flow diagram |
| 36 | Table B.1 – Input and output test signals for the EUT Table B.2 – Electrical and mechanical specifications for standardized test device |
| 37 | Annex C Low voltage Power Supply for heat meters and their sub-assemblies Low voltage Power Supply for heat 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 Table C.1 – Standardized levels for external powering C.3 Power supply specification |
