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JJG 159-2022 English PDF

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Upon your order, we will start to translate JJG 159-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of JJG 159-2022_English with my colleagues?

Yes. The purchased PDF of JJG 159-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

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Q: Should I purchase the latest version JJG 159-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 159-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$469.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 159-2022: Dual Piston Pressure Vacuum Gauges
Status: Valid

JJG 159: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 159-2022	469	Add to Cart	4 days	Dual Piston Pressure Vacuum Gauges	Valid
JJG 159-2008	839	Add to Cart	4 days	Verification Regulation of Standard Dual piston pressure Vacuum Gauge	Obsolete
JJG 159-1994	479	Add to Cart	4 days	Verification Regulation of Standard Dual Piston Type Pressure-Vaccum Gauge (Grade II, III)	Obsolete
JJG 159-1975	RFQ	ASK	3 days	Verification Regulation of Standard Dual Piston Type Pressure Vacuum Gauge (Grade II &III)	Obsolete

Similar standards

JJG 249 JJG 404 JJG 134

Basic data

Standard ID: JJG 159-2022 (JJG159-2022)
Description (Translated English): Dual Piston Pressure Vacuum Gauges
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 21,211
Date of Issue: 2022-04-29
Date of Implementation: 2022-10-29
Issuing agency(ies): State Administration for Market Regulation

JJG 159-2022: Dual Piston Pressure Vacuum Gauges

---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.
Dual Piston Pressure Vacuum Gauges National Metrology Verification Regulations of the People's Republic of China Dual Piston Pressure Vacuum Gauge Released on 2022-04-29 Implementation on 2022-10-29 Released by the State Administration for Market Regulation Dual Piston Pressure Vacuum Gauge Verification Regulations Replace JJG 159-2008 Responsible unit. National Pressure Measurement Technical Committee Main drafting unit. Shanghai Institute of Metrology and Testing Technology Shanghai Minyu Industrial Co., Ltd. Participating in the drafting unit. Xinjiang Uygur Autonomous Region Institute of Metrology and Testing Shanghai Jinshan Quality Measurement Institute Shanghai Jianzhou Machinery Equipment Co., Ltd. This regulation entrusts the National Pressure Measurement Technical Committee to be responsible for interpretation The main drafters of this regulation. Tu Limeng (Shanghai Institute of Metrology and Testing Technology) Hong Bian (Shanghai Institute of Metrology and Testing Technology) Hu Anlun (Shanghai Minyu Industrial Co., Ltd.) Participating drafters. Zhuo Hua (Xinjiang Uygur Autonomous Region Metrology and Testing Institute) Zhu Haidong (Shanghai Jinshan Metrology and Quality Inspection Institute) Lu Guoqing (Shanghai Jianzhou Machinery Equipment Co., Ltd.)

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Units of measure(1) 4 Overview(1) 5 Metrological performance requirements (1) 5.1 Accuracy class(1) 5.2 Differential Piston Effective Area(2) 5.3 Proportional constant K value (2) 5.4 Mass of special weights(2) 5.5 Verticality(3) 5.6 Piston rotation duration(3) 5.7 Descent speed(3) 5.8 Discrimination threshold(3) 5.9 Sealing (3) 6 General technical requirements (4) 6.1 Appearance(4) 6.2 Piston system(4) 6.3 Special weights and load pans(4) 7 Measuring Instrument Control(4) 7.1 Verification items (4) 7.2 Test conditions (5) 7.3 Verification method (6) 7.4 Processing of verification results (11) 7.5 Verification cycle (11) Appendix A Verification Record Format of Double Piston Pressure Vacuum Gauge (12) Appendix B Test Certificate and Test Result Notification Inner Page Format (13) Appendix C Gravitational Acceleration of Some Cities in China (14)

Introduction

JJF1001-2011 "General Metrology Terms and Definitions", JJF1002-2010 "National Metrology Verification Regulations Compilation" "Rules", JJF1059.1-2012 "Evaluation and Expression of Measurement Uncertainty" together constitute the support for the revision of this regulation The basic series of specifications. This regulation replaces JJG 159-2008, and JJG 159-2008 "Double Piston Pressure Vacuum Gauge" National Metrology Compared with the verification regulations, except for editorial modifications, the main changes are as follows. ---According to the requirements of JJF1002-2010 "Rules for Compilation of National Metrology Verification Regulations", the introduction is a must-have content, adding Added the content of the introduction section; ---Increased the double-piston pressure vacuum gauge with an accuracy level of 0.01, and added the corresponding technology index; --- Clarify the calculation method of converted mass; --- Adjustments were made to Appendix A and Appendix B of the procedure, and Appendix C was revised accordingly. The release status of previous versions of this regulation is as follows. ---JJG 159-2008 Double piston pressure vacuum gauge; ---JJG 159-1994 Second and third standard double-piston pressure vacuum gauge; ---JJG 159-1975 Second and third-class standard dual-piston pressure vacuum gauge. Dual Piston Pressure Vacuum Gauge Verification Regulations

1 Scope

This regulation is applicable to the first verification, Subsequent verification and in-use inspection.

2 References

This regulation refers to the following documents. JJG 99-2006 weight For dated references, only the dated version applies to this regulation; for undated references document, its latest version (including all amendments) applies to this regulation.

3 units of measurement

The legal unit of measurement used by the double-piston pressure vacuum gauge is Pa (Pascal, referred to as Pa), or its decimal Multiple unit kPa, MPa, etc.

4 Overview

The dual-piston pressure vacuum gauge is composed of a simple piston system, a differential piston system, special weights, and a calibrator. The principle is to use the mass of the simple piston to balance the mass of the differential piston, so that it can be measured from zero (atmospheric pressure). Measure positive and negative pressure. When measuring positive pressure, the differential piston rises, and the weight is loaded on the differential piston, so that the differential piston and the simple Single-piston balance; when measuring negative pressure, the simple piston rises, and the weight is loaded on the simple piston, so that the simple piston and the differential Piston balance. The measurement lower limit of the double-piston pressure vacuum gauge is. -0.1MPa; the measurement upper limit can be. 0.25MPa, 0.6MPa, 1MPa. If the range of the double-piston pressure vacuum gauge under inspection is inconsistent with the above range, press the nearest Value selection of the above range.

5 Metering performance requirements

5.1 Accuracy class The accuracy level and maximum allowable error of the double-piston pressure vacuum gauge shall comply with the provisions in Table 1. Table 1 Accuracy grade and maximum allowable error Accuracy grade maximum allowable error Positive pressure part Negative pressure part Level 0.01 The pressure value is 0.01MPa~ When measuring the upper limit, it is actual measured pressure ±0.01% of value The pressure value is between (0~ 0.01) MPa, 0.01MPa ±0.01% of The pressure value is in (-0.1~ -0.01) MPa, for actual measurement ±0.01% of pressure value The pressure value is in (-0.01~ 0) MPa, -0.01MPa ±0.01% of ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 159-2022_English be delivered?

Answer: Upon your order, we will start to translate JJG 159-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 159-2022_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 159-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJG 159-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 159-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.