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GB/T 11826-2019: Rotating-element current-meters
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 11826-2019	English	359	Add to Cart	4 days [Need to translate]	Rotating-element current-meters
GB/T 11826-2002	English	399	Add to Cart	3 days [Need to translate]	Rotating current meter
GB/T 11826-1989	English	399	Add to Cart	3 days [Need to translate]	Propeller-type current meter

GB/T 11826-2019: Rotating-element current-meters

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Rotating-element current-meters ICS 07.060 N93 National Standards of People's Republic of China Replace GB/T 11826-2002 Rotor type flow meter Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Working principle and classification 2 4.1 Working principle 2 4.2 Classification 2 5 structural composition 2 5.1 Structural Features 2 5.2 Rotor structure 3 5.3 Support structure 3 5.4 Signaling Structure 3 5.5 Orientation Structure 3 5.6 Counting section 4 5.7 suspension part 4 5.8 Special Annex 4 6 Technical requirements 4 6.1 Appearance 4 6.2 Working environment 4 6.3 Performance Indicator 4 6.4 Structural performance 5 6.5 Instrument box quality 5 6.6 Mechanical environment adaptability 5 7 Calibration/Calibration 5 7.1 Verification/Calibration Method 5 7.2 Verification/Calibration Requirements 5 8 Use and maintenance 7 8.1 Use 7 8.2 Maintenance 8 9 Test method 8 9.1 Test Requirements 8 9.2 Main test equipment 8 9.3 Test method content 8 10 Inspection rules 9 10.1 Factory Inspection 9 10.2 Type inspection 9 11 signs and instructions for use 10 11.1 Sign 10 11.2 Instruction Manual 10 12 Packaging, transportation and storage 10 12.1 Packing 10 12.2 Transportation 11 12.3 Storage 11

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 11826-2002 "Rotor-type flow meter", compared with GB/T 11826-2002, the main technical content changes as follows. --- Added "terms and definitions" to the terms and definitions (see Chapter 3, Chapter 3 of the.2002 edition); --- Modified the "working attitude" and "water flow rate relationship" of the rotor flow meter to "working principle" (see 4.1,.2002 edition) 4.1, 4.3); --- Revised the calculation ratio between the speed of the flow meter and the lower limit of the speed range (see 6.3.1, 6.3.2, 6.3 of the.2002 version, 6.2); --- Revised the "relative error of each speed grade" (see 6.3.5, 6.5.2 of the.2002 edition); --- Added requirements for flow meters for laboratory hydraulic physical model measurements; --- According to the actual application of the rotor flow meter product, the use and maintenance aspects have been added. This standard is proposed and managed by the Ministry of Water Resources of the People's Republic of China. This standard was drafted. Hydrological Instruments and Geotechnical Instruments Quality Supervision, Inspection and Testing Center of the Ministry of Water Resources, Nanjing Water Conservancy and Hydrology Institute of Dynamic Research, Jiangsu Nanshui Technology Co., Ltd., Chongqing Huazheng Hydrological Instrument Co., Ltd. The main drafters of this standard. He Shengrong, Zhou Dongsheng, Jin Fuyi, Jin Jie, Yu Ximing, Li Jinjian, Hu Jianwei, Zhang Zehong, Wang Xiangming. The previous versions of the standards replaced by this standard are. ---GB/T 11826-1989, GB/T 11826-2002; ---GB/T 11827-1989. Rotor type flow meter

1 Scope

This standard specifies the structural composition, technical requirements, verification/calibration, use and maintenance, test methods, inspection rules, and Logo and instructions for use, packaging, transportation, storage, etc. This standard applies to rivers, lakes, reservoirs, channels, pipelines, hydraulic laboratories and other flow rate test rotor flow meter (hereinafter referred to as "Flow meter").

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 9359 basic environmental test conditions and methods for hydrological instruments General technical conditions for GB/T 13384 mechanical and electrical product packaging GB/T 18522.6 General rules for hydrological instruments - Part 6. Rules for inspection and marking, packaging, transport, storage, instructions for use GB/T 19677-2005 Hydrological instrument terminology and symbols GB/T 21699 Rotary flow meter calibration/calibration method in straight line open slot GB/T 27992.1 Water depth measuring instrument - Part 1. Hydrographic measuring rod GB/T 50095-2014 Hydrological basic terms and symbol standards SH/T 0138-1994 No. 10 instrument oil SL06 hydrographic test lead fish General technical requirements for SL/T 244 hydrological cableway electromechanical equipment and test instruments

3 Terms and definitions

The following terms and definitions as defined in GB/T 19677-2005 and GB/T 50095-2014 apply to this document. 3.1 Cup-type current-meters A rotary flow cup is used as a flow meter for the rotor. [GB/T 19677-2005, definition 3.4.11.2.1] Note. The rotating cup is evenly mounted on the circumference of the rotary disc to form a rotating cup part. When placed in the water stream, the cup component rotates. Usually install this turn with a vertical axis child. Therefore, it can also be called a vertical axis flow meter. 3.2 Propeller-typecurrent-meters A flow meter with a propeller as the rotor. [GB/T 19677-2005, definition 3.4.11.2.1] Note. Blades with several plane angles are evenly mounted on a wheel housing, or two or more helical blades surround the column. Rotary paddle. When placed in a stream of water, the propeller can rotate about a horizontal axis. Therefore, it can also be called a horizontal axis flow meter. ...