Ultra-micro liquid flow meter
Ultra-micro liquid flow meter, Total:184 items.
The international standard classification for "Ultra-micro liquid flow meter" includes: Volumetric equipment and measurements , Flow in closed conduits , Measurement of fluid flow .
The Chinese standard classification for "Ultra-micro liquid flow meter" includes: Oil and gas gathering and transportation equipment , Flow capacity and material level instrument , Marking, packaging, transport and storage , Mechanics Measurement .
国家市场监督管理总局、中国国家标准化管理委员会
- GB/T 36989-2018 Measurement of liquid hydrocarbons by ultrasonic flow meters
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
- GB/T 34041.2-2017 Measurement of fluid flow in closed conduits―Ultrasonic meters for gas―Part 2:Meters for industrial applications
- GB/T 35138-2017 Measurement of fluid flow in closed conduits-Ultrasonic transit-time meters for liquid
- GB/T 34041.1-2017 Measurement of fluid flow in closed conduits―Ultrasonic meters for gas―Part 1:Meters for custody transfer and allocation measurement
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 17289-2009 Liquid hydrocarbons - Volumetric measurement by turbine meter systems
- GB/T 18604-2001 Measurement of natural gas flow by ultrasonic flow meter
- GB/T 18604-2014 Measurement of Natural Gas Flow by Gas Ultrasonic Flow Meters
- GB/T 17286.2-2016 Liquid hydrocarbons--Dynamic measurement--Proving systems for volumetric meters--Part 2: Pipe provers
- GB/T 18604-2023 Measurement of natural gas flow by gas ultrasonic flow meters
- GB/T 17288-1998 Liquid hydrocarbons--Volumetric measurement by displacement meter systems other than dispensing pumps
- GB/T 17286.2-1998 Liquid hydrocarbons - Dynamic measurement - Proving systems for volumetric meters - Part 2: Pipe provers
- GB/T 17288-2009 Liquid hydrocarbons - Volumetric measurement by displacement meter systems
- GB/T 17289-1998 Liquid hydrocarbons --Volumetric measurement by turbine meter system
Professional Standard - Coal
- MT/T 525-1995 LCZ-80 Type Microcomputer Ultrasonic Flowmeter
National Metrological Technical Specifications of the People's Republic of China
- JJF 1358-2012 Calibration Specification for DN1000-DN15000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method
Group Standards of the People's Republic of China
- T/CAIA YQ002-2016 Testing Method of Micro-Flow Liquid
工业和信息化部/国家能源局
- JB/T 12959-2016 Roots flowmeters for liquids
National Metrological Verification Regulations of the People's Republic of China
- JJG 2063-2007 Verification Scheme of Measuring Instruments for Liquid Flow
- JJG 1030-2007 Verification Regulation of Ultrasonic Flowmeters
- JJG 667-1997 Verification Regulation of Liquid Positive Displacement Flow Meter
- JJG 667-2010 Liquid Positive Displacement Flowmeter
Professional Standard - Machinery
- JB/T 11929-2014 Flow-metering Intermittent Liquid Adding System
Professional Standard - Urban Construction
- CJ/T 122-2000 Ultrasonic Doppler flowmeter
Henan Provincial Standard of the People's Republic of China
- DB4102/T 009-2020 Gas ultrasonic flowmeter installation and construction requirements
Professional Standard - Petroleum
- SY/T 6890.1-2012 Operation and Maintenance Regulations for Flowmeter-Part 1: Liquid Positive Displacement Flowmeter
- SY/T 5671-1993 Handover measurement rules for flow meters of petroleum and liquid petroleum products
未注明发布机构
- DIN EN ISO 20456 E:2019-06 Measurement of Fluid Flow in Closed Pipes Guidelines for the Use of Conductive Liquid Electromagnetic Flowmeters (Draft)
国家能源局
- SY/T 5671-2018 Petroleum and liquid petroleum products. Procedures for custody transfer measurement by meter
United States Navy
- NAVY MIL-F-24701-1988 FLOWMETER, LIQUID, ULTRASONIC, NON-INTRUSIVE
- NAVY MIL-F-24259 A-1987 FLUID FLOWMETER, VOLUME VELOCITY TYPE
- NAVY MIL-F-24291 C NOTICE 1-1998 FLOWMETER, FLUID ELECTROMAGNETIC TYPE
- NAVY MIL-F-24291 C-1990 FLOWMETER, FLUID ELECTROMAGNETIC TYPE
International Organization for Standardization (ISO)
- ISO 6418:1985 Liquid flow measurement in open channels — Ultrasonic (acoustic) velocity meters
- ISO 12242:2012 Measurement of fluid flow in closed conduits - Ultrasonic transit-time meters for liquid
- ISO 17089-2:2012 Measurement of fluid flow in closed conduits - Ultrasonic meters for gas - Part 2: Meters for industrial applications
- ISO 6416:1985 Liquid flow measurement in open channels — Measurement of discharge by the ultrasonic (acoustic) method
- ISO 17089-1:2010 Measurement of fluid flow in closed conduits - Ultrasonic meters for gas - Part 1: Meters for custody transfer and allocation measurement
- ISO/DIS 24062 Measurement of fluid flow in closed conduits — Clamp-on ultrasonic transit-time meters for liquids and gases
- ISO/FDIS 24062:2023 Measurement of fluid flow in closed conduits — Clamp-on ultrasonic transit-time meters for liquids and gases
- ISO/TR 12765:1998 Measurement of fluid flow in closed conduits - Methods using transit-time ultrasonic flowmeters
- ISO 2715:1981 Liquid hydrocarbons; Volumetric measurement by turbine meter systems
- ISO 2715:2017 Liquid hydrocarbons. Volumetric measurement by turbine flowmeter. Volumetric measurement by turbine meter systems
- ISO 9104:1991 Measurement of fluid flow on closed conduits; methods of evaluating the performance of electromagnetic flow-meters for liquids
- ISO 748:2007 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats
- ISO 20456:2017 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids
SCC
- 11/30215947 DC BS ISO 12242. Measurement of fluid flow in closed conduits. Ultrasonic meters for liquid
- MIL MIL-F-24701-1988 FLOWMETER, LIQUID, VLTRASONIC, NON INTRUSIVE
- ASME MFC-5M-1985(R2006) Measurement of Liquid Flow in Closed Conduits Using Transit-Time Ultrasonic Flowmeters
- DANSK DS/ISO 24062:2024 Measurement of fluid flow in closed conduits – Clamp-on ultrasonic transit-time meters for liquids and gases
- BS 3680-3E:1993 Measurement of liquid flow in open channels. Stream flow measurement-Measurement of discharge by the ultrasonic (acoustic) method
- BS 3680-3E:1986 Measurement of liquid flow in open channels. Stream flow measurement-Measurement of discharge by the ultrasonic (acoustic) method
- 11/30215951 DC BS ISO 17089-2. Measurement of fluid flow in closed conduits. Ultrasonic meters for gas. Part 2. Meters for industrial applications
- VDI/VDE 2642-1996 Ultrasonic flow measurement of fluids in fully flowing pipelines
- DANSK DS/EN ISO 6817:1996 Measurement of conductive liquid flow in closed conduits - Method using electromagnetic flowmeters
- DANSK DS/EN 29104:1993 Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids
- DANSK DS/ISO 9104:1993 Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids
- NS-ISO 9104:1991 Measurement of fluid flow in closed conduits — Methods of evaluating the performance of electromagnetic flow-meters for liquids
- BS EN 29104:1993 Measurement of fluid flow in closed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids
- VDI/VDE 2642-1996 Ultrasonic flow measurement of fluids in fully flowing pipelines
- DANSK DS/EN ISO 20456:2019 Measurement of fluid flow in closed conduits – Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
- NS-EN ISO 20456:2019 Measurement of fluid flow in closed conduits — Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
- 05/30077136 DC ISO 2537. Hydrometry. Liquid flow measurement in open channels. Rotating element current-meters
- BS 3680-6:1973 Measurement of liquid flow in open channels-Measurement of flow in tidal channels
- NS-EN 29104:1993 Measurement of fluid flow in closed conduits — Methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991)
GSO
- OS GSO ISO 12242:2015 Measurement of fluid flow in closed conduits -- Ultrasonic transit-time meters for liquid
- GSO ISO 12242:2015 Measurement of fluid flow in closed conduits -- Ultrasonic transit-time meters for liquid
- OS GSO ISO 17089-2:2017 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS- ULTRASONIC METERS FOR GAS – PART2: METERS FOR INDUSTRIAL APPLICATIONS
- BH GSO ISO 17089-2:2017 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS- ULTRASONIC METERS FOR GAS – PART2: METERS FOR INDUSTRIAL APPLICATIONS
- GSO ISO 17089-2:2017 MEASUREMENT OF FLUID FLOW IN CLOSED CONDUITS- ULTRASONIC METERS FOR GAS – PART2: METERS FOR INDUSTRIAL APPLICATIONS
- GSO ISO 20456:2021 Measurement of fluid flow in closed conduits — Guidance for the use of electromagnetic flowmeters for conductive liquids
- BH GSO ISO 20456:2022 Measurement of fluid flow in closed conduits — Guidance for the use of electromagnetic flowmeters for conductive liquids
- GSO OIML D25:2012 Vortex meters used in measuring systems for fluids
- OS GSO ISO 6817:2008 Measurement of conductive liquid flow in closed conduits-Method using electromagnetic, flowmeters
- GSO ISO 6817:2008 Measurement of conductive liquid flow in closed conduits-Method using electromagnetic, flowmeters
- GSO ISO 748:2008 Hydrometry — Measurement of liquid flow in open channels using current-meters or floats
- OS GSO ISO 748:2008 Hydrometry — Measurement of liquid flow in open channels using current-meters or floats
American National Standards Institute (ANSI)
- ANSI/ASME MFC-5M-1985 Measurement of Liquid Flow in Closed Conduits using Transit-Time Ultrasonic Flowmeters
- ISO/DIS 24062:2023 Measurement of fluid flow in closed conduits - Clamp-on ultrasonic transit-time meters for liquids and gases
- ANSI/ASME MFC-22-2007 Measurement of Liquid by Turbine Flowmeters
- ANSI/ASME MFC-6M-1998 Fluid Flow in Pipes Using Vortex Flow Meters, Measurement of
- ANSI/ASME MFC-18M-2001 Measurement of Fluid Flow in Pipes Using Variable Area Meters
- ANSI/ASME MFC-5.1-2011 Measurement of Liquid Flow in Closed Conduits Using Transit Time Ultrasonic Flowmeters
British Standards Institution (BSI)
- BS ISO 12242:2012 Measurement of fluid flow in closed conduits. Ultrasonic transit-time meters for liquid
- BS ISO/TR 12765:1999 Measurement of fluid flow in closed conduits. Methods using transit-time ultrasonic flowmeters
- BS ISO 24062:2023 Measurement of fluid flow in closed conduits. Clamp-on ultrasonic transit-time meters for liquids and gases
- BS ISO 13689:2001 Refrigerated light hydrocarbon fluids — Measurement of liquid levels in tanks containing liquefied gases — Microwave - type level gauge
- 23/30456713 DC BS ISO 24062. Measurement of fluid flow in closed conduits. Clamp-on ultrasonic transit-time meters for liquids and gases
- BS EN ISO 6817:1993 Measurement of conductive liquid flow in closed conduits - Method using electromagnetic flowmeters
- BS EN 29104:1991 Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids
- BS ISO/TR 11974:1997(1999) Measurement of liquid flow in open channels — Electromagnetic current meters
- BS EN ISO 748:2007 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats
- BS ISO/TR 12765:1998 Measurement of fluid flow in closed conduits. Methods using transit-time ultrasonic flowmeters
- BS EN ISO 20456:2019 Measurement of fluid flow in closed conduits. Guidance for the use of electromagnetic flowmeters for conductive liquids
- BS EN ISO 8316:1988 Method of liquid flow in closed conduits - Method by collection of the liquid in a volumetric tank
- BS 3680-5:1992 Measurement of liquid flow in open channels - Slope area method of estimation
- BS 7405:1991 Guide to selection and application of flowmeters for the measurement of fluid flow in closed conduits
- 16/30323541 DC BS ISO 20456. Measurement of fluid flow in closed conduits. Guidance for the use of electromagnetic flowmeters for conductive liquids
- BS ISO/TS 15768:2000 Measurement of liquid velocity in open channels - Design, selection and use of electromagnetic current meters
American Society of Mechanical Engineers (ASME)
- ASME MFC-5.1-2011(R2018) Measurement of Liquid Flow in Closed Conduits Using Transit-Time Ultrasonic Flowmeters
- ASME MFC-5.1-2011 Measurement of Liquid Flow in Closed Conduits Using Transit-Time Ultrasonic Flowmeters
- ASME MFC-5.3-2013(R2018) Measurement of Liquid Flow in Closed Conduits Using Doppler Ultrasonic Flowmeters
- ASME MFC-5M-1985 Measurement of Liquid Flow in Closed Conduits Using Transit-Time Ultrasonic Flowmeters
- ASME MFC-11M-1989 Measurement of fluid flow by means of Coriolis mass flowmeters
- ASME MFC-22-2007 Measurement of Liquid by Turbine Flowmeters
- ASME MFC-22-2007(R2014) Measurement of Liquid by Turbine Flowmeters
- ASME MFC-11-2006 Measurement of Fluid Flow by Means of Coriolis Mass Flowmeters
- ASME MFC-11M-2003 Measurement of fluid flow by means of Coriolis mass flowmeters
- ASME MFC-11M-2006 Measurement of Fluid Flow by Means of Coriolis Mass Flowmeters
- ASME MFC-6M-1987 Measurement of fluid flow in pipes using vortex flow meters
- ASME MFC-5.3-2013 Measurement of Liquid Flow in Closed Conduits Using Doppler Ultrasonic Flowmeters
- ASME MFC-14M-1995 Measurement of fluid flow using small bore precision orifice meters
- ASME MFC-6M Errata-1987 Measurement of fluid flow in pipes using vortex flow meters; Errata
- ASME MFC-16-2007 Measurement of Liquid Flow in Closed Conduits with Electromagnetic Flowmeters
- ASME MFC-14M-2003 Measurement of Fluid Flow Using Small Bore Precision Orifice Meters
- ASME MFC-16-2014(R2019) Measurement of Liquid Flow in Closed Conduits with Electromagnetic Flowmeters
- ASME MFC-16-2014 Measurement of Liquid Flow in Closed Conduits with Electromagnetic Flowmeters
- ASME MFC-16M-1995 Measurement of fluid flow in closed conduits by means of electromagnetic flowmeters
- ASME MFC.4M-1986(R2016) Measurement of Gas Flow by Turbine Meters
CN-STDBOOK
- 图书 a-4420 liquid flow meter
VN-TCVN
- TCVN 6816-2001 Measurement of fluid flow in closed conduits.Methods using transit-time ultrasonic flowmeters
KR-KS
- KS B ISO 6416-2015 Measurement of liquid flow in open channels-Measurement of discharge by the ultrasonic(acoustic) method
- KS B ISO 748-2021 Hydrometry — Measurement of liquid flow in open channels using current-meters or floats
- KS B ISO 6416-2021 Hydrometry — Measurement of discharge by the ultrasonic transit time (time of flight) method
- KS B ISO 18320-2022 Hydrometry — Measurement of liquid flow in open channels — Determination of the stage–discharge relationship
- KS B ISO 2537-2021 Hydrometry — Rotating-element current-meters
- KS B ISO TR 11627-2014 Measurement of liquid flow in open channels — Computing stream flow using an unsteady flow model
VDI - Verein Deutscher Ingenieure
- VDI/VDE 2642-1989 Ultraschall-Durchflussmessung von Fluessigkeiten in voll durchstroemten Rohrleitungen
- VDI/VDE 2642-1991 Ultraschall-Durchflussmessung von Fluessigkeiten in voll durchstroemten Rohrleitungen
- VDI/VDE 2642-1994 Measurement of fluid flow by means of ultrasonic flowmeters in fully floated circular cross-section closed conduits
RO-ASRO
- STAS R 12091-1982 MEASUREMENT OF FLUID FLOW Estimation of uncertainty af a flow-rate measurement
Korean Agency for Technology and Standards (KATS)
- KS B ISO TR 12765:2005 Measurement of fluid flow in closed conduits-Methods using transit-time ultrasonic flowmeters
- KS B ISO 748:2021 Hydrometry — Measurement of liquid flow in open channels using current-meters or floats
- KS M ISO 13689-2013 Refrigerated light hydrocarbon fluids-Measurement of liquid levelsin tanks containing liquefied gases-Microwave-type level gauge
- KS B ISO TR 11974-2005(2015) Measurement of liquid flow in open channels-Electromagnetic current meters
- KS B ISO TR 11974-2023 Measurement of liquid flow in open channels-Electromagnetic current meters
- KS B ISO 6416:2021 Hydrometry — Measurement of discharge by the ultrasonic transit time (time of flight) method
- KS B ISO 18320:2022 Hydrometry — Measurement of liquid flow in open channels — Determination of the stage–discharge relationship
- KS B ISO TR 12765-2020 Measurement of fluid flow in closed conduits-Methods using transit-time ultrasonic flowmeters
- KS B 5325-2019 Proving methods for liquid flowmeters
- KS B 5325-1994 Proving methods for liquid flowmeters
- KS B ISO TR 12765-2005(2020) Measurement of fluid flow in closed conduits-Methods using transit-time ultrasonic flowmeters
- KS B ISO 2537:2021 Hydrometry — Rotating-element current-meters
- KS M ISO 2715-2003(2008) Liquid hydrocarbons-Volumetric measurement by turbine meter systems
- KS B 5325-2009(2019) Proving methods for liquid flowmeters
- KS M ISO 13689-2003(2008) Refrigerated light hydrocarbon fluids-Measurement of liquid levelsin tanks containing liquefied gases-Microwave-type level gauge
Association Francaise de Normalisation
- NF X10-334:1993 Measurement of liquid flow in open channels. Measurement of discharge by the ultrasonic (acoustic) method.
- NF C97-912*NF EN 61685:2006 Ultrasonics - Flow measurement systems - Flow test object.
- NF X10-121*NF EN ISO 20456:2019 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids
- NF X10-301:2009 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats.
- NF X10-120:1995 Measurement of conductive liquid flow in closed conduits. Method using electromagnetic flow meters.
- NF X10-121:1993 Measurement of fluid flow in closed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids.
- NF EN ISO 20456:2019 Mesurage du débit des fluides dans les conduites fermées - Lignes directrices pour l'utilisation des débitmètres électromagnétiques dans les liquides conducteurs
AENOR
- UNE-ISO 13689:2005 Refrigerated light hydrocarbon fluids -- Measurement of liquid levels in tanks containing liquefied gases -- Microwave-type level gauge.
ET-QSAE
- ES A.D5.100-1973 Flowmeter Liquid Fuel Measuring Equipment
AT-ON
- ONORM M 5921-1988 Heatmeters (meters for quantities of heat) for liquid heat carrier fluids; requirements for measurement
- ONORM B 2403-1998 Liquid flow measurement in using propeller-type current meters
- ONORM M 5920-1988 Heatmeters (meters for quantities of heat) for liquid heat carrier fluids; general basic Information
- ONORM M 5922-1982 Heatmeters (meters for quantities of heat) for liquid carrier fluids; directives for dimensioning and installation
- ONORM EN 29104-1993 Measurement of fluid flow in closed conduits - Methods of evaluating the Performance of electromagnetic flow-meters forliquids (ISO 9104:1991)
European Committee for Standardization (CEN)
- EN 29104:1993 Measurement of fluid flow in closed conduits; methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991)
- EN ISO 748:2021 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements (ISO 748:2021)
- EN ISO 748:2007 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats
- EN ISO 748:2000 Measurement of Liquid Flow in Open Channels - Velocity-Area Methods ISO 748:1997
- EN ISO 20456:2019 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
IN-BIS
- IS 4477 Pt.1-1967 Methods for measuring fluid flow using Venturi flow meters Part Ⅰ Liquids
Japanese Industrial Standards Committee (JISC)
- JIS B 7552:1993 Liquid flowmeters -- Proving methods
RU-GOST R
- GOST 8.407-1980 State system for ensuring the uniformity of measurements incompressible liquid flowmeters. Standardizes metrological characteristics
German Institute for Standardization
- DIN EN ISO 748:2008 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats (ISO 748:2007); English version of DIN EN ISO 748:2008-02
- DIN EN 29104:1993 Measurement of fluid flow in closed conduits; methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991); German version EN 29104:1993
- DIN EN ISO 20456:2020-09 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017); German version EN ISO 20456:2019
- DIN EN ISO 6817:1995 Measurement of conductive liquid flow in closed conduits - Methods using electromagnetic flow-meters (ISO 6817:1992); German version EN ISO 6817:1995
- DIN EN ISO 20456:2020 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
ES-UNE
- UNE-EN ISO 20456:2021 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
Danish Standards Foundation
- DS/EN 29104:1994 Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids
- DS/ISO 9104:1994 Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids
- DS/EN 29104:1993 Measurement of fluid flow in closed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids
- DS/EN ISO 748:2008 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats
NL-NEN
- NEN-ISO 9104:1994 Measurement of fluid flow in xlosed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991)
API - American Petroleum Institute
- API TR 2577-2018 Performance of Full-bore Vortex Meters for Measurement of Liquid Flows (FIRST EDITION)
- API H00008-2002 Measurement of Liquid Hydrocarbons by Ultrasonic Flowmeters Using Transit Time Technology (First Edition)
- API MPMS 5.3-1987 Manual of Petroleum Measurement Standards Chapter 5—Liquid Metering Section 3—Measurement of Liquid Hydrocarbons by Turbine Meters (SECOND EDITION)
HU-MSZT
- MSZ 1709/3.lap-1967 Liquid flow measurement
Lithuanian Standards Office
- LST EN 29104-2001 Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991)
American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
- ASHRAE 41.8-1989 Standard Methods of Measurement of Flow of Liquids in Pipes Using Orifice Flowmeters