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JJF 1627-2017 English PDF

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JJF 1627-2017: Calibration Specification for Reference Leaks by Soap Film Flowmeter
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1627-2017	English	349	Add to Cart	3 days [Need to translate]	Calibration Specification for Reference Leaks by Soap Film Flowmeter	Valid	JJF 1627-2017

PDF similar to JJF 1627-2017

Standard similar to JJF 1627-2017

GB/T 36126 JJF 1368 GB/T 1885 JJF 1625 JJF 1626 JJF 1624

Basic data

Standard ID	JJF 1627-2017 (JJF1627-2017)
Description (Translated English)	Calibration Specification for Reference Leaks by Soap Film Flowmeter
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Word Count Estimation	15,177
Date of Issue	2017-09-26
Date of Implementation	2017-12-26
Regulation (derived from)	General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJF 1627-2017: Calibration Specification for Reference Leaks by Soap Film Flowmeter

---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.
(Standard Specification for Standard Leakage of Soap Membrane Flowmeter) People's Republic of China National Measurement Specifications Standard calibration method for leak detection of soap film flowmeter Calibration Specification for ReferenceLeaks bySoapFilmFlowmeter 2017-09-26 Posted 2017-12-26 Implementation General Administration of Quality Supervision, Inspection and Quarantine released Standard calibration method for leak detection of soap film flowmeter The focal point. National pressure measurement technical committee The main drafting unit. Shanghai Institute of Measurement and Testing Technology Participate in the drafting unit. Boyi (Tianjin) Pneumatic Technology Institute Co., Ltd. This specification entrusts the national pressure measurement technical committee to explain The main drafters of this specification. Xu Hong (Shanghai Institute of Measurement and Testing Technology) Zhang Shuling (Shanghai Institute of Measurement and Testing Technology) Participate in the drafters. Aiko Wei [Bo Yi (Tianjin) Pneumatic Technology Co., Ltd.] Zhang Weiming [Bo Yi (Tianjin) Pneumatic Technology Co., Ltd.]

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and measurement units (1) 4 Overview (2) 4.1 Structure (2) 4.2 Principle (2) 4.3 Use (2) 5 Metrology (2) 5.1 Leakage leakage rate (2) 5.2 Repeatability (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Measurement standards and other equipment (3) 7 Calibration Items and Calibration Methods (3) 7.1 Visual inspection (3) 7.2 Preparation before calibration (3) 7.3 Calibration (4) 7.4 Data Processing (4) 8 Calibration Results Expression (4) 9 time interval of correction (5) Appendix A Calibration Record Formats (6) Appendix B Calibration Certificate (Inside Page) Format (7) Appendix C Standard leakage leak rate measurement uncertainty assessment (8)

Introduction

JJF 1071-2010 "Rules for the Preparation of National Metrology Calibration Standards", JJF 1001-2011 "General Measurement Terms and Definition ", JJF 1059.1-2012" Evaluation and Expression of Uncertainty in Measurement ", GB/T 3163-2007" Vacuum Technology The term "together constitute the basic set of norms developed by this specification. This specification refers to EN13192.2001 "Non-destructive testing leakage test gas reference leak calibration" (Non Destructive Testing-Leak Testing-Calibration of Reference Leaks for Gases, ASTM E908-98 (Reapproved2012) Gas Reference Leakage Calibration Standard Practice (StandardPracticefor CalibratingGaseousReferenceLeaks) and JJG586-2006 "soap film flow meter" to develop, adopt Use one of the basic principles. This specification is first released. Standard calibration method for leak detection of soap film flowmeter

1 Scope

This specification applies to the leakage rate range of 1mL/min ~ 10L/min, intake end pressure in 1kPa ~ 1.5MPa, The exit end is the calibration of the standard leak hole of the atmosphere (hereinafter referred to as leak hole).

2 reference documents

This specification cites the following documents. JJG586-2006 soap film flow meter Vacuum technology terms Non - destructive testing - Calibration of leaks for gas reference leaks (NonDestructive Testing-Leak Testing-Calibration of Reference Leaks for Gases) Standard Specification for Leakage Calibration of Gas Reference Leakage (ASTME908-98 (Reapproved.2012)) Practice forCalibratingGaseousReferenceLeaks) For dated references, only the dated version applies to this specification; for undated references The latest version (including all amendments) applies to this specification.

3 Terms and measurement units

3.1 leak hole leak [GB/T 3163-2007, the definition 6.1.1] Passing gas from one side of a wall to a hole, aperture, permeable element or Other structures on the wall of a closure. 3.2 Standard leak referenceleak Under specified conditions (inlet pressure, outlet pressure, temperature 23 ℃ ± 5 ℃), the leak rate is a known school Punch hole used. 3.3 Leakage rates (symbol .QV) [GB/T 3163-2007, Definition 6.1.9] Under specified conditions, the flow rate of a particular gas through a leak, measured in mL/min or L/min. 3.4 viscousflow viscousflow [GB/T 3163-2007, the definition 2.26] The mean free path of gas molecules is much smaller than the flow of gas through the conduit at the smallest cross-sectional dimension of the conduit, and the flow depends on Gas viscosity. Flow can be laminar or turbulent. 3.5 soap film flowmeter soapfilmflowmeter [JJG586-2006, the definition 3.1] Flow meter for measuring the flow of minute gases. From a soap tube with a graduated scale, the soap film passes through the soap tube Up and down the time scale and the volume between the two membrane tube to calculate the instantaneous flow through the flow meter. 3.6 electronic soap film flow meter electronicsoapfilmflowmeter [JJG586-2006, the definition 3.1] In the soap tube to install a pair of electronic sensors, and can display the instrument directly shows the instantaneous flow of soap film flow Gauge.

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