International &
National Standards for
flow measurement
Gases
Nidhin manohar
Differential pressure flow meters
 ISO 5167 – 1 :

2003
Measurement of
fluid flow by means
of pressure
differential devic...
Differential pressure flow meters
 ISO 5167 – 2 : 2003
Measurement of fluid
flow by means of
pressure differential
device...
Differential pressure flow meters
 ISO 5167 – 2 : 2003
Measurement of fluid
flow by means of
pressure differential
device...
Differential pressure flow meters
 ISO 5167 – 3 : 2003
Measurement of fluid
flow by means of
pressure differential
device...
Differential pressure flow meters
 ISO 5167 – 3 : 2003
Measurement of fluid
flow by means of
pressure differential
device...
Differential pressure flow meters
 ISO 5167 – 3 : 2003
Measurement of fluid
flow by means of
pressure differential
device...
Differential pressure flow meters
 ISO 5167 – 3 : 2003

 This part of ISO 5167 specifies

Measurement of fluid
flow by m...
Differential pressure flow meters
 ISO 5167 – 3 : 2003
Measurement of fluid
flow by means of
pressure differential
device...
Differential pressure flow meters
 ISO 5167 – 3 : 2003

 This part of ISO 5167 deals

Measurement of fluid
flow by means...
Differential pressure flow meters
(Other types)
 IS 10431 : 1994
Measurement of air flow
of compressors and
exhausters by...
Differential pressure flow meters
(Other types)
 IS 10431 : 1994
Measurement of air flow
of compressors and
exhausters by...
Differential pressure flow meters
(Other types)
 BS 1571 – 2 : 1975
Testing of positive
displacement
compressors and
exha...
Differential pressure flow meters
(Other types)
 ASTM D 3195 :

1985.
Standard practice for
Rotameter Calibration

 This...
Differential pressure flow meters
(Other types)
 ISO 9300 : 2005.
Measurement of gas flow by
means of critical flow
ventu...
Rotary meters
 ISO 9951 : 1993.
Measurement of gas flow in
closed conduits –
Turbine meters.

 This standard specifies

...
Rotary meters
 AGA Report No. 7 :

1985.
Measurement of gas by
Turbine meters.

 This report and

recommendations relate...
Rotary meters
 AGA Report No. 7 :

1985.
Measurement of gas by
Turbine meters.

 This report does not cover the

equipme...
Rotary meters
 OIML TC8/SC8 : 2005.
Gas meters – Part 1
Requirements.
(Supersedes documents : R6,
R31, R32)

 This docum...
Rotary meters
 OIML TC8/SC8 : 2005.
Gas meters – Part 1
Requirements.
(Supersedes documents : R6,
R31, R32)

 This also ...
Ultrasonic meters
 OIML TC8/SC8 : 2005.
Gas meters – Part 1
Requirements.
(Supersedes documents : R6,
R31, R32)

 This d...
Ultrasonic meters
 OIML TC8/SC8 : 2005.
Gas meters – Part 1
Requirements.
(Supersedes documents : R6,
R31, R32)

 This a...
Ultrasonic meters
 AGA Report No. 9 : 1998. 
Measurement of gas by
Multipath Ultrasonic
meters.

This report developed f...
Fluid oscillatory meters
 OIML D 25 : 1996.

 This document describes the

Vortex meters used in
measuring systems for
f...
Fluid oscillatory meters
 JIS Z 8766 : 1989.
Methods of flow measurement
by vortex flow meters.

 This standard specifie...
Mass flow meters
 AGA Report No. 11 :

2003.
Measurement of Natural gas by
Coriolis meter.

 This report is to assist de...
Safety Relief Valves
 IS 12992 - 2 : 1990.
Spring loaded safety relief
valves – Specifications
(Part 2 Testing)

 This s...
Safety Relief Valves
 ASME PTC 25 : 2001.
Pressure relief devices

 This code provides instruction

for flow capacity te...
Air Relief Valves
 IS 14845 : 2000.
Resilient seated cast iron air
relief valves for water works
purpose – Specification....
Uncertainty estimation
 NABL 141 : 2000.
Guidelines for estimation and
expression of uncertainty
in measurement



This ...
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International & national standards for gas flow......

  1. 1. International & National Standards for flow measurement Gases Nidhin manohar
  2. 2. Differential pressure flow meters  ISO 5167 – 1 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 1. General principles and requirements  This part of ISO 5167 defines terms and symbols and establishes the general principles for methods of measurement and computation of the flow rate of fluid flowing in a conduit by means of pressure differential devices (orifice, nozzle& venturi) when they are inserted in a circular cross section conduit running full. This part also specifies the general requirements for methods of measurement, installation and determination of uncertainty of the measurement of flow rate.
  3. 3. Differential pressure flow meters  ISO 5167 – 2 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 2. Orifice plates  This part of ISO 5167 specifies the geometry and method of use (installation and operating conditions) of orifice plates when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.  This part also provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ISO 5167 - 1
  4. 4. Differential pressure flow meters  ISO 5167 – 2 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 2. Orifice plates  This part of ISO 5167 is applicable only to a flow which remains subsonic throughout the measuring section and were the fluid can be considered as single phase. It is not applicable to the measurement of pulsating flow. It does not cover the use of orifice plates in pipe sizes less than 50 mm or more than 1000 mm or pipe Reynolds number below 5000.
  5. 5. Differential pressure flow meters  ISO 5167 – 3 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 3. Nozzles and Venturi nozzles  This part of ISO 5167 specifies the geometry and method of use (installation and operating conditions) of nozzles and venturi nozzles when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.  This part also provides background information for calculating the flow rate and is applicable in conjunction with requirements given in ISO 5167-1.
  6. 6. Differential pressure flow meters  ISO 5167 – 3 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 3. Nozzles and Venturi nozzles  This part of ISO 5167 is applicable only to a flow which remains subsonic throughout the measuring section and were the fluid can be considered as single phase. It is not applicable to the measurement of pulsating flow. It does not cover the use of nozzles and venturi nozzles in pipe sizes less than 50 mm or more than 630 mm or pipe Reynolds number below 10000.
  7. 7. Differential pressure flow meters  ISO 5167 – 3 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 3. Nozzles and Venturi nozzles  This part of ISO 5167 deals 1. a) b) 2. with Standard nozzles ISA nozzle 1932 nozzle Long radius nozzle Venturi nozzles The ISA and 1932 nozzles are fundamentally different and are described separately in this part of ISO 5167.
  8. 8. Differential pressure flow meters  ISO 5167 – 3 : 2003  This part of ISO 5167 specifies Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 4. the geometry and method of use (installation and operating conditions) of nozzles and venturi nozzles when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.  This part also provides background information for calculating the flow rate and is applicable in conjunction with requirements given in ISO 5167-1. Venturi tubes
  9. 9. Differential pressure flow meters  ISO 5167 – 3 : 2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 4. Venturi tubes  This part of ISO 5167 is applicable only to a flow which remains subsonic throughout the measuring section and were the fluid can be considered as single phase. It is not applicable to the measurement of pulsating flow. It does not cover the use of nozzles and venturi nozzles in pipe sizes less than 50 mm or more than 1200 mm or pipe Reynolds number below 200000.
  10. 10. Differential pressure flow meters  ISO 5167 – 3 : 2003  This part of ISO 5167 deals Measurement of fluid flow by means of pressure differential devices inserted in circular cross section running full – Part 4. with Classical venturi tubes Cast Machined Rough welded sheet-iron Venturi tubes 1. a) b) c)
  11. 11. Differential pressure flow meters (Other types)  IS 10431 : 1994 Measurement of air flow of compressors and exhausters by nozzles.  This standard prescribes a method of measurement of air flow and free air delivery of positive displacement compressors and exhausters, both reciprocating and rotary types.  This standard deals with measurement of air flow by using standard flow nozzle in order to obtain consistent and generally acceptable results, within a specified tolerance.
  12. 12. Differential pressure flow meters (Other types)  IS 10431 : 1994 Measurement of air flow of compressors and exhausters by nozzles.  This standard does not deals with the compressors giving a pressure rise of less than 0.1 bar and greater than 60 bar.
  13. 13. Differential pressure flow meters (Other types)  BS 1571 – 2 : 1975 Testing of positive displacement compressors and exhausters.  This standard specifies acceptance tests for positive displacement compressors and exhausters, the absolute intake pressures of which exceed approximately 1 mbar.  This standard applies to such machines as reciprocating and rotary compressors.
  14. 14. Differential pressure flow meters (Other types)  ASTM D 3195 : 1985. Standard practice for Rotameter Calibration  This standard covers the calibration of variable-area flow meters (rotameters) used to determine air sample volumes at or close to ambient conditions of pressure and temperature, in the analysis of atmospheres for pollutant content.  This standard does not purport to address all of the safety problems associated with its use.
  15. 15. Differential pressure flow meters (Other types)  ISO 9300 : 2005. Measurement of gas flow by means of critical flow venturi nozzles.  This standard specifies the geometry and method of use (installation and operating conditions) of critical flow venturi nozzles (CFVN) used to determine the mass flow rate of the fluid flowing a system. It also gives the information necessary for calculating the flow rate and its associated uncertainty.
  16. 16. Rotary meters  ISO 9951 : 1993. Measurement of gas flow in closed conduits – Turbine meters.  This standard specifies dimensions, ranges, construction, performance, calibration and output characteristics of turbine meters for gas flow measurement.  It also deals with installation conditions, leakage testing and pressure testing and provides a series of informative annexes A to E including recommendations for use, field checks and perturbations of the fluid flowing.
  17. 17. Rotary meters  AGA Report No. 7 : 1985. Measurement of gas by Turbine meters.  This report and recommendations relate and are limited to the axial flow type gas turbine meter in which the entire gas system passes through the turbine meter rotor.  It covers the measurement of fuel gas by turbine meters as related to the installation, operation, calibration practices and calculation methods for determining volumetric and mass flow.
  18. 18. Rotary meters  AGA Report No. 7 : 1985. Measurement of gas by Turbine meters.  This report does not cover the equipment used in the determination of the pressures, temperatures, densities and other variables that must be known for the accurate measurement of gas.
  19. 19. Rotary meters  OIML TC8/SC8 : 2005. Gas meters – Part 1 Requirements. (Supersedes documents : R6, R31, R32)  This documents applies to gas meters based on any principle, used to meter the quantity of gas in volume, mass or energy units that has passed the meter at operating conditions.  It also applies to correction, other ancillary and electronic devices that can be attached to the gas meter.
  20. 20. Rotary meters  OIML TC8/SC8 : 2005. Gas meters – Part 1 Requirements. (Supersedes documents : R6, R31, R32)  This also applies to gas meters intended to measure quantities of gaseous fuels or other gases except liquefied gases and steam.  Dispensers for compressed natural gas (CNG) are excluded from the scope of this recommendation.
  21. 21. Ultrasonic meters  OIML TC8/SC8 : 2005. Gas meters – Part 1 Requirements. (Supersedes documents : R6, R31, R32)  This documents applies to gas meters based on any principle, used to meter the quantity of gas in volume, mass or energy units that has passed the meter at operating conditions.  It also applies to correction, other ancillary and electronic devices that can be attached to the gas meter.
  22. 22. Ultrasonic meters  OIML TC8/SC8 : 2005. Gas meters – Part 1 Requirements. (Supersedes documents : R6, R31, R32)  This also applies to gas meters intended to measure quantities of gaseous fuels or other gases except liquefied gases and steam.  Dispensers for compressed natural gas (CNG) are excluded from the scope of this recommendation.
  23. 23. Ultrasonic meters  AGA Report No. 9 : 1998.  Measurement of gas by Multipath Ultrasonic meters. This report developed for multipath ultrasonic transit-time flow meters, typically 6” and larger in diameter, used for the measurement of natural gas. Ultrasonic meters have at least two independent pairs of measuring transducers.  Typical applications include measuring the flow of large volumes of gas through production facilities, transmission pipelines, storage facilities, distribution systems and large end use customer meter set.
  24. 24. Fluid oscillatory meters  OIML D 25 : 1996.  This document describes the Vortex meters used in measuring systems for fluids. general metrological characteristics and performances attainable by measuring systems for fluids fitted with vortex meters and specifies the installation and testing conditions which should be fulfilled for these performances to be actually obtained.  Safety matters are not subject to metrological control and are therefore not dealt with in this document.
  25. 25. Fluid oscillatory meters  JIS Z 8766 : 1989. Methods of flow measurement by vortex flow meters.  This standard specifies methods of flow measurement for fluids in pipes running full by means of vortex flow meters.
  26. 26. Mass flow meters  AGA Report No. 11 : 2003. Measurement of Natural gas by Coriolis meter.  This report is to assist designers and users in operating, installing, maintaining and verifying Coriolis flow meters used for Natural gas flow measurement.  The scope is limited to the measurement of natural gas and associated hydrocarbon gases either as pure hydrocarbons, as a mixture and diluents..  Applies to meters used in medium to high pressure gas applications.
  27. 27. Safety Relief Valves  IS 12992 - 2 : 1990. Spring loaded safety relief valves – Specifications (Part 2 Testing)  This standard covers the test to establish the operatability of safety relief valves at specified pressure and temperature.
  28. 28. Safety Relief Valves  ASME PTC 25 : 2001. Pressure relief devices  This code provides instruction for flow capacity testing and for in-service and bench testing. Testing of re-closing is conducted under various inlet and outlet conditions using steam and gases for which valid physical properties are known.
  29. 29. Air Relief Valves  IS 14845 : 2000. Resilient seated cast iron air relief valves for water works purpose – Specification.  This standard covers requirement of single air valve (small and large orifice) double air valve (small and large orifice with or without integral isolating valve) and kinetic air valves with or without separate isolating sluice valve for use on water mains.
  30. 30. Uncertainty estimation  NABL 141 : 2000. Guidelines for estimation and expression of uncertainty in measurement  This document apply to measurement of all sorts as are carried out in calibration laboratories. For specialized measurements, these may have to be supplemented by more specific details and, in some cases, appropriately modified forms of the concerned formulae. Measurements which can be treated as outputs of several correlated inputs have been excluded from the scope of this document.
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