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JJG 680-2021 English PDF

US$319.00 · In stock
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JJG 680-2021: (Verification Regulations for Smoke Sampler)
Status: Valid

JJG 680: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 680-2021	English	319	Add to Cart	4 days [Need to translate]	(Verification Regulations for Smoke Sampler)	Valid	JJG 680-2021
JJG 680-2007	English	639	Add to Cart	3 days [Need to translate]	Verification Regulation of Samplers for Stack Dust	Obsolete	JJG 680-2007
JJG 680-1990	English	279	Add to Cart	3 days [Need to translate]	Verification Regulation of Measuring Apparatus for Dust Contentin Stack	Obsolete	JJG 680-1990

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Basic data

Standard ID	JJG 680-2021 (JJG680-2021)
Description (Translated English)	(Verification Regulations for Smoke Sampler)
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A61
Word Count Estimation	16,188
Issuing agency(ies)	State Administration for Market Regulation

JJG 680-2021: (Verification Regulations for Smoke Sampler)

---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 Regulations for Smoke Sampler) People's Republic of China National Metrological Verification Regulations soot sampler 2022-01-28 Implementation Released by the State Administration for Market Regulation Soot sampler verification regulations Replacing JJG 680-2007 Focal Point. National Technical Committee of Environmental Chemical Metrology Main drafting unit. China Institute of Metrology Qingdao Laoying Haina Photoelectric Environmental Protection Group Co., Ltd. Qingdao Metrology Technology Research Institute Participating in the drafting unit. Beijing Institute of Metrology and Testing Sciences Dalian Metrology and Testing Research Institute This regulation is entrusted to the National Environmental Chemical Metrology Technical Committee to be responsible for the interpretation The main drafters of this regulation. Zhang Wenge (China Institute of Metrology) Qu Zhonghua (Qingdao Laoying Haina Photoelectric Environmental Protection Group Co., Ltd.) Xia Chun (Qingdao Metrology Technology Research Institute) Participating drafters. Chen Zhonghui (Qingdao Laoying Haina Photoelectric Environmental Protection Group Co., Ltd.) Liu Junjie (China Institute of Metrology) Shen Zhengsheng (Beijing Institute of Metrology and Testing) Zhao Liang (Dalian Metrology and Testing Research Institute)

content

Introduction (Ⅱ) 1 Scope(1) 2 References (1) 3 Overview(1) 4 Measurement performance requirements (2) 4.1 Flow indication error (2) 4.2 Flow stability(2) 4.3 Timing error(2) 4.4 Temperature indication error(2) 4.5 Pressure indication error(2) 4.6 Pressure zero drift(2) 4.7 Isokinetic Tracking Response Time(2) 5 General technical requirements (2) 5.1 Appearance and power-on inspection (2) 5.2 Pumping capacity(3) 5.3 Air tightness (3) 5.4 Insulation resistance(3) 6 Measuring Instrument Control(3) 6.1 Verification Conditions (3) 6.2 Verification items (3) 6.3 Verification method (4) 6.4 Verification result processing (7) 6.5 Verification Period(7) Appendix A Verification Certificate (Inner Page) Format (8) Appendix B Verification Result Notification (Inner Page) Format (9) Appendix C Smoke and Dust Sampler Verification Record Format (10)

Introduction

This regulation is a revision of JJG 680-2007 "Smoke and Dust Sampler". Compared with JJG 680-2007, in addition to In addition to the editorial modifications, the main technical changes are as follows. --- Expand the flow range of the dust sampler to which the regulations apply, and delete the requirements for the exhaust flow rate (see Chapter 1); --- Revised the indicator of instantaneous flow indication error and cumulative volume indication error of the soot sampler, simplifying the measurement performance Statement of performance requirements (see Chapter 4); --- Removed restrictions on the principle of measuring instruments, and removed the U-shaped pressure gauge (see 6.1); --- Modify the flow verification point, which should be determined according to the range of the smoke sampler (see 6.3.3.1); --- Modified the operation method and steps of the air extraction ability verification (see 6.3.6); ---Modified the calculation formula of the pressure indication error, and changed the up and down stroke of the pressure verification to a single stroke (see 6.3.9). The previous versions of this regulation have been released as follows. ---JJG 680-2007. ---JJG 680-1990. Soot sampler verification regulations

1 Scope

This regulation is applicable to the determination of particulate matter in the exhaust gas from stationary pollution sources with a sampling flow rate of less than 100L/min. Initial verification, follow-up verification and in-use inspection of soot samplers for particle concentration.

2 Reference documents

This procedure cites the following documents. JJF1001-2011 General Metrology Terms and Definitions HJ/T 48-1999 Technical conditions for smoke and dust samplers For dated citations, only the dated version applies to this Regulation; for undated citations documents, the latest version (including all amendments) applies to this regulation.

3 Overview

The soot sampler is used to measure the concentration of particulate matter in the exhaust gas emitted by stationary pollution sources such as flues and chimneys. sampler. The soot sampler uses the principle of isokinetic sampling to extract a certain amount of exhaust gas containing particulate matter, and passes through a filter cartridge of known mass. Or the particulate matter is retained during the filter membrane, after removing the non-compounded water, according to the increment of the filter cartridge or filter membrane before and after sampling and the simultaneous suction The sample volume was taken to calculate the concentration of particulate matter in the exhaust gas. The smoke and dust samplers mentioned below refer to the filter weighing method smoke Dust sampler. The soot sampler is mainly composed of sampling devices (including soot sampling pipes, dryers, etc.), temperature, pressure, flow measurement It is composed of a quantity control device and an air pump. Soot samplers are divided into manual soot samplers and automatic soot samplers. The manual fume sampler measures parameters such as temperature, pressure and airflow velocity at the sampling point in advance before sampling, and calculates the parameters. The sampling flow required by each sampling point when the smoke and dust sampler is working normally can be adjusted manually to the required sampling flow. The flow value is sampled, and the structure is shown in Figure 1. Figure 1 Structure diagram of manual soot sampler 1-sampling device; 2-pressure measuring device; 3-temperature measuring device; 4-flow control measuring device; 5-air pump The automatic smoke and dust sampler is measured and controlled by the measurement and control system according to the pressure, temperature and other parameters detected by various sensors. Calculate and calculate the corresponding control signal, and the control circuit adjusts the suction capacity of the suction pump to achieve the corresponding flow. automatic

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