GBZ35140-2017 English PDF

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GBZ35140-2017: Measurement of fluid flow by means of pressure-differential devices -- Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of GB/T 2624
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/Z 35140-2017	494	Add to Cart	3 days	Measurement of fluid flow by means of pressure-differential devices -- Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of GB/T 2624	Valid

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Basic data

Standard ID: GB/Z 35140-2017 (GB/Z35140-2017)
Description (Translated English): Measurement of fluid flow by means of pressure-differential devices -- Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of GB/T 2624
Sector / Industry: National Standard
Classification of Chinese Standard: N12
Classification of International Standard: 17.120.10
Word Count Estimation: 26,237
Date of Issue: 2017-12-29
Date of Implementation: 2018-07-01
Regulation (derived from): National Standards Bulletin 2017 No. 32
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GBZ35140-2017: Measurement of fluid flow by means of pressure-differential devices -- Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of GB/T 2624

---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.
Measurement of fluid flow by means of pressure-differential devices - Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of GB/T 2624 ICS 17.120.10 N12 People's Republic of China national standardization of technical guidance documents Use differential pressure to measure fluid flow GB/T 2624 outside the scope of the orifice plate, nozzle and Venturi tube usage guide Guidelinesforthesificationoforificeplates, nozzlesandVenturi tubesbeyondthescopeofGB/T 2624 (ISO /T R15377.2007, Measurementoffflowsmeansof plates, nozzles and valves beyond beyond the scope of ISO 5167, IDT) 2017-12-29 published.2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This instructional document has been drafted in accordance with the rules given in GB/T 1.1-2009. This Guidance Document is translated using the equivalent ISO /T R15377.2007 "Measurement of Fluid Flow with Differential Pressure Devices ISO 5167 Guidelines for the Use of Orifices, Nozzles and Venturi Beyond Range "(in English). Our document, which corresponds in a consistent manner to the international documents that are normative references in this Guidance Document, is as follows. --- GB/T 17611-1998 Measurement of fluid flow in closed conduits Terms and symbols (idtISO 4006.1991) The following technical document has made the following editorial changes. --- The standard name was changed to "use differential pressure devices to measure fluid flow GB/T 2624 outside the range of orifice plate, nozzle and venturi Guide to Use. " This guidance document is proposed by China Machinery Industry Federation. This Guidance Document is governed by the National Technical Committee for Measurement, Control and Automation of Industrial Processes (SAC/TC124). The guiding technical document is drafted by Shanghai Institute of Industrial Automation Instrumentation. The guidance of technical documents to participate in the drafting unit. Beijing Ruipu ternary Instrument Co., Ltd., Jiangyin City, throttling Plant Co., Ltd., Zhejiang Cangnan Instrument Group East Star Energy Technology Co., Ltd., Shanghai Instrumentation Control System Test Institute, Dantong Tongbo Electric Group. The main drafters of this guidance document are Xiao Hong Lian, Li Zhenzhong, Yan Yongfeng, Xie Shangpeng, Song Yan Yong, Guo Yonggang, Li Minghua and Wang Jianing. Use differential pressure to measure fluid flow GB/T 2624 outside the scope of the orifice plate, nozzle and Venturi tube usage guide

1 Scope

This Guidance Document specifies the geometric dimensions of the tapered inlet orifice, 1/4 orifice plate, eccentric orifice and 10.5 ° contraction section venturi Inch and how to use it This guidance document also gives recommendations for the use of rectangular edge plate and nozzles outside the scope of GB/T 2624. Note The data based on this guidance document may, in some cases, be obsolete or incomplete.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2624.1-2006 Measurement of full pipe fluid flow using differential pressure devices installed in circular sectioned pipes - Part 1. General Principles and requirements (ISO 5167-1.2003, IDT) ISO 4006 closed pipe fluid flow measurement terms and symbols (Measurementoffluidflowinclosedcon- duits-Vocabularyandsymbols)

3 Terms and definitions

ISO 4006 and GB/T 2624.1 defined terms and definitions apply to this document.

4 symbol

The symbols in Table 1 apply to this document. Table 1 symbol Symbol represents the amount dimension M. Quality L. Length T. Time SI unit a take pressure port aperture L m C outflow coefficient 1 - d working conditions under the device orifice or throat diameter Lm D Working pipe diameter upstream (or classic Venturi upstream diameter) Lm dtap pressure port diameter L m e Inner hole thickness (axial length) L m ......

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