BS EN 1434-1:1997:2003 Edition
$142.49
Heat meters – General requirements
| Published By | Publication Date | Number of Pages |
| BSI | 2003 | 22 |
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 |
| 3 | Contents |
| 6 | Foreword Foreword to amendment A1 Contents |
| 7 | 1 Scope 2 Normative references 3 Types of instrument 3.1 Complete instrument 3.2 Combined instrument 3.3 Hybrid instrument (often called a “compact” instrument) 3.4 Sub-assemblies of a heat meter, which is a combined instrument |
| 8 | 3.5 Equipment under test (EUT) 4 Definitions and symbols 4.1 response time, 4.2 fast response meter 4.3 rated voltage, 4.4 rated operating conditions 4.5 reference conditions 4.6 influence quantity 4.7 influence factors 4.8 disturbance 4.9 Types of error 4.9.1 error (of indication) 4.9.2 intrinsic error 4.9.2 initial intrinsic error 4.9.3 durability error |
| 9 | 4.9.4 maximum permissible error; MPE 4.10 Types of fault fault transitory fault significant fault 4.11 reference values of the measurand, RVM 4.12 conventional true value 4.13 meter model 4.14 electronic device 4.15 electronic element 4.16 minimum immersion depth of a temperature sensor 4.17 self-heating effect 4.18 cooling meter |
| 10 | 4.19 flow direction 4.20 electrical pulse 4.21 pulse output and input device 4.22 maximum admissible temperature 4.23 long life flow sensor 5 Rated operating conditions 5.1 Limits of temperature range 5.2 Limits of temperature differences 5.3 Limits of flow-rate |
| 11 | 5.4 Limits of thermal power 5.5 Maximum admissible working pressure, MAP 5.6 Maximum pressure loss 6 Technical characteristics 6.1 Materials and construction 6.2 Requirements outside the limiting values of the flow rate 6.3 Display |
| 12 | 6.4 Protection against fraud 6.5 Mains voltage Table 1 Standardized levels for external powering 7 Specified working range 7.1 Temperature difference |
| 13 | 7.2 Flow rate 8 Heat transmission formula 9 Metrological characteristics (maximum permissible errors, MPE) 9.1 General |
| 14 | 9.2 Values of maximum permissible errors 9.3 Application of maximum permissible errors |
| 15 | 10 Environmental classification 10.1 Environmental class A (domestic use, indoor installations) 10.2 Environmental class B (domestic use, outdoor installations) 10.3 Environmental class C (industrial installations) 11 Heat meter specification 11.1 Flow sensor |
| 16 | 11.2 Temperature sensor pair 11.3 Calculator |
| 17 | 11.4 Complete meters |
| 18 | 12 Information to be delivered with the heat meters or sub-assemblies |
| 19 | Annex A (normative) Heat coefficient equations (normative) Heat coefficient equations |
| 20 | Table TA.1 Coefficients and exponents of Eqs. (A.3) and (A.5) Annex B deleted ! Annex C deleted ! |
