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JJF 1358-2012 English PDF

US$599.00 · In stock
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JJF 1358-2012: Calibration Specification for DN1 000~DN15 000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method
Status: Valid

JJF 1358: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1358-2012	English	599	Add to Cart	5 days [Need to translate]	Calibration Specification for DN1 000~DN15 000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method	Valid	JJF 1358-2012
JJF 1358-1990	English	199	Add to Cart	2 days [Need to translate]	O.T.N. for Primary Standard Chemicals	Obsolete	JJF 1358-1990

PDF similar to JJF 1358-2012

Standard similar to JJF 1358-2012

GB/T 36126 JJF 1368 GB/T 1885 JJF 1356.1 JJF 1355 JJF 1354

Basic data

Standard ID	JJF 1358-2012 (JJF1358-2012)
Description (Translated English)	Calibration Specification for DN1 000~DN15 000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Classification of International Standard	17.120
Word Count Estimation	26,211
Quoted Standard	JJG 1030-2007; JJF 1004-2004; JJF 1059-1999; GB/T 23900-2009; IEC 41-1991; ASME PTC 18-2002
Regulation (derived from)	AQSIQ Announcement No. 132 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to the time difference method for the working principle of the closed pipe liquid-contact multi-channel ultrasonic flowmeter during non-real-calibration and verification. Meter size range is: (1 ~ 15) m.

JJF 1358-2012: Calibration Specification for DN1 000~DN15 000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for DN1 000 ~ DN15 000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method People's Republic of China National Metrology Technical Specifications Non-real flow calibration by DN1000 ~ DN15000 Liquid ultrasonic flowmeter calibration specification CalibrationSpecificationforDN1000 ~ DN15000LiquidUltrasonic Issued on. 2012-09-03 2012-12-03 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Non-real flow calibration by DN1000 ~ DN15000 Liquid ultrasonic flowmeter calibration specification CalibrationSpecificationforDN1000 ~ DN15000 by Focal point. the National Technical Committee on Metering flow capacity The main drafting units. China Institute of Metrology Participated in the drafting. the National Water flow metering station Large China Three Gorges Corporation Nanjing Shenrui Electrical System Control Co., Ltd. Tangshan Huizhong Instrumentation Co., Ltd. Beijing Chang Min Technology Co., Ltd. This specification flow capacity commissioned the National Technical Committee responsible for the interpretation of measurement The main drafters of this specification. Meng Tao (China Institute of Metrology) Drafters participate. Miao Yu-sheng (Grand National Water flow metering station) Hu Heming (China Institute of Metrology) Li Youping (China Three Gorges Corporation) Xu Chunrong (Nanjing Shenrui Electric System Control Co., Ltd.) The new tension (Tangshan Huizhong Instrumentation Co., Ltd.) Puqi Huan (Beijing Chang Min Technology Co., Ltd.)

1 Scope (1) 2. References (1) 3 Terms and Definitions (1) 4 Overview (1) 4.1 Composition (1) 4.2 works (2) 4.3-channel arrangement in the form of geometric parameters and related meaning (3) Use 4.4 (3) 5 Metrological characteristics (3) Flow measurement in a 5.1 (3) 6 calibration conditions (4) Environmental conditions 6.1 (4) 6.2 Calibration medium condition (4) 6.3 measuring equipment (4) 7 calibration items and calibration methods (4) 7.1 calibration items (4) 7.2 geometrical parameters calibration (4) 7.3 Timing System resolution inspection (6) 7.4 Timing delay calibration system (6) 7.5 Flowmeter zero flow test (7) 7.6 flow rate calculation function tests (8) 7.7 Integral method checks (8) 7.8 site flow conditions impact assessment (8) 7.9 operating state inspection (9) Expression 8 calibration results (9) 9 Recalibration interval (9) Appendix A flow meter calibration using the CMM geometry (10) Appendix B Using Total Station flowmeter calibration geometry (12) Appendix C integration model algorithm inspection method (14) Appendix D flow field conditions on the performance of the reference value on the flowmeter (16) Appendix E Evaluation of Uncertainty (18) Appendix F calibration certificate within the page (20) Non-real flow calibration by DN1000 ~ DN15000 Liquid ultrasonic flowmeter calibration specification

1 Scope

This calibration specifications applicable to the time difference method for the principle of a closed conduit with a liquid-contact multi-channel ultrasonic flowmeter The non-real flow calibration and verification period. Flowmeter size range is. (1 ~ 15) m. 2. References This specification refers to the following documents. JJG1030-2007 ultrasonic flowmeter JJF 1004-2004 flow measurement terminology and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement GB/T 23900-2009 destructive testing material for measuring ultrasonic velocity IEC 41-1991 determine turbines, storage pumps and pump turbine hydraulic performance of the site acceptance test (Field acceptanceteststodeterminethehydraulicperformationofhydraulicturbines, storage pumpsandpump-turbines) ASMEPTC18-2002 (RevisionofPTC18-1992) turbine and pump turbine performance test rules Fan (HYDRAULICTURBINESANDPUMP-TURBINES, PerformanceTestCodes) For dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 Terms and Definitions

3.1 channel acousticpath Ultrasonic signals between the pair of ultrasonic transducers propagation route. 3.2-channel angular transmissionangle The angle between the channel and the pipe axis. More than 3.3-channel ultrasonic flowmeter multiplepathsultrasonicflowmeters There are two or more pairs of transducers flowmeter. 3.4 contact ultrasonic flowmeter wettedultrasonicflowmeters The transducer is embedded in a fluid conduit, the transducer in direct contact with the fluid flow meter.

4 Overview

4.1 Composition Contact multi-channel ultrasonic flowmeter (hereinafter referred to as meter) from the meter body in general, to ultrasonic transducer

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