GB/T 18604-2014 Translated English of Chinese Standard. (GBT 18604-2014, GB/T18604-2014, GBT18604-2014): Measurement of natural gas flow by gas ultrasonic flow meters [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 30. nóv. 2019 - 70 síður This Standard specifies measurement performance requirements of gas ultrasonic flow meters, flow meter body requirements, installation and maintenance, field verification test requirements, and flow calculation methods and measurement uncertainty estimates. |
From inside the book
Niðurstöður 1 - 5 af 60
Síða 1
... flow meters 用气体超声流量计测量天然气流量 Issued on: February 19, 2014 Implemented on: June 01, 2014 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People's ...
... flow meters 用气体超声流量计测量天然气流量 Issued on: February 19, 2014 Implemented on: June 01, 2014 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People's ...
Síða 2
... flow meter.......... 13 6.2 Measurement performance requirements for single-path gas ultrasonic flow meter......... 16 6.3 Influence of working conditions on measurement performance ....................................... 16 7 Flow ...
... flow meter.......... 13 6.2 Measurement performance requirements for single-path gas ultrasonic flow meter......... 16 6.3 Influence of working conditions on measurement performance ....................................... 16 7 Flow ...
Síða 3
... (normative) Flow calibration of flow meter components.................. 46 Annex C (normative) Exit-factory testing requirements.................................. 53 Annex D (informative) Documents available ..........................
... (normative) Flow calibration of flow meter components.................. 46 Annex C (normative) Exit-factory testing requirements.................................. 53 Annex D (informative) Documents available ..........................
Síða 4
... flow meter”. Compared with GB/T 18604-2001, in addition to editorial modifications, main technical changes as follows: - added three terms: maximum error shift with one path failed, speed of sound (SOS) deviation and metering package ...
... flow meter”. Compared with GB/T 18604-2001, in addition to editorial modifications, main technical changes as follows: - added three terms: maximum error shift with one path failed, speed of sound (SOS) deviation and metering package ...
Síða 5
... flow meter on-site measurement performance” (see Annex G). This Standard uses redrafting method to modify and adopt ... flow meters www.ChineseStandard.net → Buy True-PDF → Auto-delivery. Page 5 of 70 GB/T 18604-2014.
... flow meter on-site measurement performance” (see Annex G). This Standard uses redrafting method to modify and adopt ... flow meters www.ChineseStandard.net → Buy True-PDF → Auto-delivery. Page 5 of 70 GB/T 18604-2014.
Efni
4 | |
Measurement principle | 10 |
Installation requirements and maintenance | 24 |
Annex A informative Fundamental principles | 35 |
normative Exitfactory testing requirements | 53 |
Annex G informative Monitoring and guarantee of onsite measurement | 67 |
Common terms and phrases
according to formula acoustic noise acoustic path acoustic pulse airflow Annex attenuation average flow velocity calculated according calculation under standard calibration coefficient compression factor cubic meters downstream straight pipe electronic components extended uncertainty flow calculation flow measurement flow points flow regulator flowmeter frequency gas ultrasonic flow GB/T hour m3/h inner diameter installation conditions ith calibration point Maximum peak-to-peak error measurement accuracy measurement performance requirements measurement uncertainty measuring instrument megapascals meter body multi-path gas ultrasonic natural gas flow noise source output parameters path length PetroChina piezoelectric pressure obtaining hole pressure regulating valve qmax qmax,facility qmin relative sound velocity Reynolds number serial communication serial number signal processing unit sound velocity deviation sound waves specified speed of sound standard device standard reference conditions Standard uncertainty straight pipe section technical requirements temperature measurement hole theoretical sound velocity thermodynamic temperature transiting ultrasonic flow meter ultrasonic transducer uncertainty of flow velocity distribution verification testing