ДСТУ EN 12405-1:2022 Газові лічильники. Пристрої перетворювання. Частина 1. Коригування об’єму газу (EN 12405-1:2021, IDT)

ДСТУ EN 12405-1:2022
(EN 12405-1:2021, IDT)

Газові лічильники. Пристрої перетворювання.
Частина 1. Коригування об’єму газу

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

1 Scope

2 Normative references

3 Terms, definitions and symbols

3.1 Terms and definitions

3.2 Symbols

3.3 Classification

4 Principle of measurement

4.1 Conversion as a function of temperature

4.2 Conversion as a function of pressure and temperature

4.3 Conversion as a function of pressure, temperature and deviation from the ideal gas law

4.4 Correction of the volume at measurement conditions

5 Rated operating conditions

5.1 Specified field of measurement

5.2 Environmental conditions

5.3 Power supply

6 Construction requirements

6.1 General

6.2 Casings

6.3 Indications

6.4 Inputs for volume conversion

6.5 Battery powered conversion device

6.6 Security devices and alarms

7 Installation requirements

7.1 General

7.2 Temperature transducer

7.3 Pressure transducer

8 Performance

8.1 Reference conditions

8.2 Rated operating conditions

8.3 Maximum permissible errors

8.4 Conditions of matching the constituent elements of a conversion device type 2

8.5 Influence factors

8.6 Disturbances

8.7 Durability

8.8 Repeatability

8.9 Reliability

9 Tests of conformity

9.1 Verification of the construction requirements

9.2 Verification of the performance requirements (type tests)

10 Marking

11 Installation and operating instructions

Annex A (normative) Type test

Annex B (normative) Pressure transducers

Annex C (normative) Platinum resistance thermometer sensors

Annex D (normative) Temperature transducers

Annex E (informative) Model type test report for conversion devices

Annex F (informative) Model type test report for associated transducers

Annex G (normative) Individual testing before putting into service

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/32/EU Measuring Instruments Directive

Bibliography