ДСТУ EN 1434-1:2017 Теплосчетчики. Часть 1. Общие требования (EN 1434-1:2015, IDT)

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EN 1434-1:2015

Heat meters — Part 1: General requirements

прийнято як національний стандарт
методом «підтвердження» за позначенням
 

ДСТУ EN 1434-1:2017
(EN 1434-1:2015, IDТ)

Теплолічильники. Частина 1. Загальні вимоги

З наданням чинності від 2017-12-15

Contents

European foreword

1 Scope

2 Normative references

3 Terms and definitions

4 Types of instruments

4.1 General 

4.2 Complete instrument

4.3 Combined instrument

4.4 Hybrid instrument

4.5 Sub-assemblies of a heat meter, which is a combined instrument 

4.5.1 General

4.5.2 Flow sensor

4.5.3 Temperature sensor pair

4.5.4 Calculator

4.6 Equipment under test (EUT)

5 Rated operating conditions

5.1 Limits of temperature range

5.2 Limits of temperature differences

5.3 Limits of flow rate

5.4 Limit of thermal power 

5.5 Limits of working pressure

5.6 Nominal pressure (PN)

5.7 Limits in ambient temperature

5.8 Limits in deviations in supply voltage

5.9 Maximum pressure loss

5.10 Specific requirements on registration devices

5.10.1 General

5.10.2 Suitability

5.10.3 Rated operated conditions

5.10.4 Indication 

5.10.5 MPE

6 Technical characteristics 

6.1 Materials and construction

6.2 Requirements outside the limiting values of the flow rate

6.3 Display

6.4 Protection against fraud

6.5 Supply voltage

6.6 Qualifying immersion depth of a temperature sensor

6.7 The influence on a temperature sensor pair caused by mounting in pockets

6.8 Reproducibility

6.9 Repeatability

6.10 Software

7 Specified working range

7.1 General 

7.2 Temperature difference

7.3 Flow rate

8 Heat transmission formula

9 Metrological characteristics (Maximum Permissible Error, MPE)

9.1 General

9.2 Values of maximum permissible errors

9.2.1 Maximum permissible relative errors of complete heat meters

9.2.2 Maximum permissible relative error of sub-assemblies

9.3 Application of maximum permissible errors

10 Environmental classification

10.1 General

10.2 Environmental class A (Domestic use, indoor installations)

10.3 Environmental class B (Domestic use, outdoor installations) 

10.4 Environmental class C (Industrial installations)

10.5 Mechanical classes M1 to M3

11 Heat meter specification

11.1 General 

11.2 Flow sensor 

11.3 Temperature sensor pair 

11.4 Calculator

11.5 Complete meters 

12 Information to be made available by the manufacturer or supplier

12.1 Installation instructions

12.2 Parameter setting instructions

12.3 Adjustment instructions 

12.4 Maintenance instructions

12.5 Hints for disposal instructions

Annex A (normative) Heat coefficient equations

Annex B (normative) Flow conditioner package

Annex C (normative) Fast response meters

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2004/22/EC, MID

Bibliography