Vibrational gas density flow transducers, vibrational flow densometers

Draft General Measure number: 0111-OOP-C063-16, laying down metrological and technical requirements for legally controlled measuring instruments, including the testing methods for the verification of legally controlled measuring instruments: ‘vibrational gas density flow transducers’

Vibrational gas density flow transducers are placed on the market and put into use in the Czech Republic as specified measuring instruments subject to mandatory type approval and initial and subsequent verification pursuant to Act No 505/1990 on metrology, as amended. This notified legislation concerns national metrology regulation through type approval and verification of measuring instruments used as elements of instruments and systems for measuring liquid flow.

This regulation sets forth the metrological level required for the recognition of measuring instrument type approval and verification certificates issued abroad.

Keywords:

measuring instrument, flow, gas, density, densometer, vibrational, transducer

If a specified measuring instrument complies with the standards below, it also complies with the requirements of the relevant measure of a general nature:

ČSN EN 60770-1 ed.2 18 1078 Transducers for use in industrial process control systems - Part 1: Methods for performance evaluation

ČSN EN 61298-1 ed.2 18 0001 Process measurement and control devices - General methods and procedures for evaluating performance - Part 1: General considerations

ČSN EN 61298-2 ed.2 18 0001 Process measurement and control devices - General methods and procedures for evaluating performance - Part 2: Tests under reference conditions

ČSN EN 61298-3 ed.2 180001 Process measurement and control devices - General methods and procedures for evaluating performance - Part 3: Tests for effects of influence quantities

ČSN EN 12405-1+A2 257865 Gas meters - Conversion devices – Part 1:Volume conversion

ČSN EN 60068-2-6 ed.2 345791 Environmental testing - Part 2: Test methods: Test Fc: Vibration (sinusoidal)

ČSN EN 60068-2-1 ed.2 345791 Environmental testing - Part 2: Tests A: Cold

ČSN EN 60068-2-2 34 5791 Environmental testing - Part 2: Tests B: Dry heat

ČSN EN 60068-2-30 ed.2 34 5791 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)

ČSN EN 60529 33 0330 Degrees of protection provided by enclosures (IP Code)

ČSN EN 61000-4-2 33 3432 Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test

ČSN EN 61000-4-3 33 3432 Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test

ČSN EN 61000-4-4 33 3432 Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement techniques – Electrical fast transient/burst immunity test

ČSN EN 61000-4-5 33 3432 Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques - Surge immunity test

ČSN EN 61000-4-6 33 3432 Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement techniques – Immunity to conducted disturbances, induced by radio-frequency fields

ČSN EN 61000-4-8 33 3432 Electromagnetic compatibility (EMC) – Part 4-8: Testing and measurement techniques – Power frequency magnetic field immunity test

ČSN EN 61000-4-10 33 3432 Electromagnetic compatibility (EMC) – Part 4-10: Testing and measurement techniques - Damped oscillatory magnetic field immunity test. Basic EMC Publication

ČSN EN 61000-4-11 33 3432 Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests

ČSN EN 61000-4-16 33 3432 Electromagnetic compatibility (EMC) – Part 4-16: Testing and measurement techniques - Test for immunity to conducted, common mode disturbances in the frequency range 0 Hz to 150 kHz

ČSN EN 61000-4-18 33 3432 Electromagnetic compatibility (EMC) – Part 4-18: Testing and measurement techniques - Damped oscillatory wave immunity test

ČSN EN 61000-4-29 33 3432 Electromagnetic compatibility (EMC) – Part 4-29: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations on D/C input power port immunity tests