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JJG 461-2010 English PDF

US$279.00 · In stock
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JJG 461-2010: Verification Regulation of Target Flowmeter
Status: Valid

JJG 461: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 461-2010	English	279	Add to Cart	3 days [Need to translate]	Verification Regulation of Target Flowmeter	Valid	JJG 461-2010
JJG 461-1986	English	RFQ	ASK	6 days [Need to translate]	Verification Regulation of Target (Bluff Body)Type Flow Transducer	Obsolete	JJG 461-1986

PDF similar to JJG 461-2010

Standard similar to JJG 461-2010

GB/T 36126 JJG 475 GB/T 1885 JJG 159 JJG 166 JJG 126

Basic data

Standard ID	JJG 461-2010 (JJG461-2010)
Description (Translated English)	Verification Regulation of Target Flowmeter
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Classification of International Standard	17.120
Word Count Estimation	12,121
Date of Issue	2010-01-05
Date of Implementation	2010-07-05
Older Standard (superseded by this standard)	JJG 461-1986
Quoted Standard	JJF 1001-1998; JJF 1004-2004
Regulation (derived from)	AQSIQ Announcement No. 3 of 2010
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to target flowmeter (hereinafter referred to as meter) of the initial verification, testing and use of follow-up inspection.

JJG 461-2010: Verification Regulation of Target 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.
Verification Regulation of Target Flowmeter State verification procedures People's Republic of China Target Flowmeter TargetFlowmeter Issued on. 2010-01-05 2010-07-05 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Target flowmeter verification procedures Targ etFlowmeter Replacing JJG 461-1986 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on January 5, 2010, and from From July 5, 2010 implemented. Focal point. the National Technical Committee on Metering flow capacity Main drafting unit. Henan Institute of Metrology Participated in the drafting unit. Quanzhou Heng Jin Cobo Control Technology Co., Dandong-Bo Electric Co., Ltd. Quanzhou Rixin Flow Instrument Co., Ltd. Grand National Water flow metering station Zhejiang Institute of Metrology This procedure flow capacity commissioned the National Technical Committee responsible for the interpretation of measurement The main drafters of this procedure. Kong Qingyan (Henan Institute of Metrology) Cuiyao Hua (Henan Institute of Metrology) Drafters participate. Xiong Huan Qi (Quanzhou Heng Jin Cobo Control Technology Co., Ltd.) Yuan Zhonglin (Dandong-Bo Electric Co., Ltd.) Liang Lulin (Quanzhou Rixin Flow Instrument Co., Ltd.) Miao Yu-sheng (Grand National Water flow metering station) Zhaojian Liang (Zhejiang Institute of Metrology)

1 Scope (1) 2. Referenced Documents (1) 3 Terms and Definitions (1) 4 Overview (1) 4.1 works (1) 4.2 Structure type (2) 5 metering performance requirements (2) 5.1 accuracy class (2) 5.2 reference error (2) 5.3 meter error representation of the selection principle (2) 5.4 Repeatability (2) 6 General Requirements (2) 6.1 random file (2) 6.2 nameplates and identification (2) 6.3 Appearance (3) Tightness 6.4 (3) 7 control of measuring instruments (3) 7.1 test conditions (3) 7.2 Verification Project (4) 7.3 Verification Methods (4) 7.4 Calculation Method (5) 7.5 test results processing (6) 7.6 test cycle (6) Appendix A calibration certificate and test results of notice (in-page) format (7) Target flowmeter verification procedures

1 Scope

This procedure is applied to the target type flowmeter (hereinafter referred to as meter) initial verification, verification and subsequent use test.

2 Citations

The following procedures contain provisions which, through reference, constitute provisions of this Directive. JJF1001-1998 common measurement terms and definitions JJF1004-2004 flow measurement terminology and definitions Note that using the currently valid version of the documents cited.

3 Terms and Definitions

3.1 measuring tube metertube And some special processing techniques to meet specific requirements for the pipe section, wherein the flow measurement device may be mounted or Means. 3.2 Target target Flow sensing element mounted within the measuring tube, the target plate is also known as the target. 3.3 Target Flowmeter targetflowmeter A target plate placed in the measuring tube, through the measuring tube to force the target plate is determined by detecting the fluid flow fluid Volume flow meter.

4 Overview

Works 4.1 Setting a direction perpendicular to the stream of Target, Target surrounding fluid along a constant cross-section through a straight pipe segments, Target action by thrust, thrust is proportional to the size of the area of the kinetic energy of the fluid and Target. In certain Reynolds number The range, proportional to the force flow through the flow meter and Target suffered. Target the force detected by the force sensor. A circular target plate, for example, the basic formula for flow calculation qm = 1.253αγ D2-d2 d ρF (1) qV = qm/ρ = 1.253αγ D2-d2 (2) Where. qm --- mass flow rate, kg/s; --- qV volume flow, m3/s; α --- flow coefficient (pure number);

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