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Aqueous Urea Solution Dispensers
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JJG 1191-2022
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Basic data Standard ID | JJG 1191-2022 (JJG1191-2022) | Description (Translated English) | Aqueous Urea Solution Dispensers | Sector / Industry | Metrology & Measurement Industry Standard | Classification of Chinese Standard | A53 | Word Count Estimation | 24,250 | Date of Issue | 2022-12-27 | Date of Implementation | 2023-06-27 | Issuing agency(ies) | State Administration for Market Regulation |
JJG 1191-2022: Aqueous Urea Solution Dispensers---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.
National Metrology Verification Regulations of the People's Republic of China
Vehicle urea filling machine
Released on 2022-12-27
2023-06-27 Implementation
Released by the State Administration for Market Regulation
Verification rules for vehicle urea filling machine
Responsible Unit. National Flow Measurement Technical Committee Liquid Flow Sub-Technical Committee
Main drafting unit. Beijing Institute of Metrology and Testing Sciences
Hubei Institute of Metrology and Testing Technology
Henan Institute of Metrology
Participating in the drafting unit. Token Hengshan Technology (Guangzhou) Co., Ltd.
Zhejiang Langqing Intelligent Technology Co., Ltd.
Zhengxing Technology Co., Ltd.
This regulation entrusts the Liquid Flow Sub-Technical Committee of the National Flow Measurement Technical Committee to be responsible for interpretation
The main drafters of this regulation.
Yang Jing (Beijing Institute of Metrology and Testing Sciences)
You Jianjun (Hubei Institute of Metrology and Testing Technology)
Cui Yaohua (Henan Institute of Metrology)
Participating drafters.
Li Chen (Beijing Institute of Metrology and Testing Sciences)
Zhang material [Token Hengshan Technology (Guangzhou) Co., Ltd.]
Si Jianming (Zhejiang Langqing Intelligent Technology Co., Ltd.)
Li Yi (Zhengxing Technology Co., Ltd.)
Table of contents
Introduction (Ⅱ)
1 Scope(1)
2 References(1)
3 Terms and units of measurement(1)
3.1 Terminology(1)
3.2 Units of measurement(2)
4 Overview(2)
4.1 Structure (2)
4.2 Working principle(2)
4.3 Use(3)
5 Metrological performance requirements (3)
5.1 Maximum permissible error(3)
5.2 Repeatability(3)
5.3 Payment Amount Error(3)
6 General technical requirements (3)
6.1 Nameplates and markings (3)
6.2 Appearance structure (4)
6.3 Self-locking function(4)
6.4 Seals(4)
7 Measuring Instrument Control(4)
7.1 Test conditions (4)
7.2 Verification items (5)
7.3 Verification method (6)
7.4 Processing of verification results (8)
7.5 Verification period(8)
Appendix A Internal Page Reference Format of Verification Certificate/Notification of Verification Result (9)
Appendix B Verification Record Reference Format (10)
Appendix C Quality Method Verification (13)
Appendix D Table of Liquid Expansion Coefficient of Urea Solution (15)
Introduction
JJF1001-2011 "General Metrology Terms and Definitions", JJF1071-2010 "National Metrology Calibration Specification Compilation"
"Rules", JJF1059.1-2012 "Assessment and Expression of Measurement Uncertainty" together constitute the basis for formulating this regulation
series specification.
This regulation refers to the international recommendation OIMLR117 "Non-aqueous liquids" issued by the International Organization of Legal Metrology (OIML).
Relevant content, combined with the actual use of my country's vehicle urea filling machine and the status quo of the industry.
This regulation is published for the first time.
Verification rules for vehicle urea filling machine
1 Scope
This regulation applies to the initial verification, follow-up verification and in-use inspection of vehicle urea filling machines.
2 References
This procedure refers to the following documents.
GB 29518-2013 Diesel engine nitrogen oxide reducing agent urea aqueous solution (AUS32)
OIMLR117-1 Non-aqueous liquid dynamic measurement system Part 1.Metrology and technical requirements (Dynamic
requirements)
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 Terminology and units of measurement
3.1 Terminology
The following terms and definitions apply to this regulation.
3.1.1 Aqueousureasolution
A solution prepared with AUS32 special urea and pure water without any other additives.
Note. It meets the technical requirements stipulated in Chapter 5 of GB 29518-2013.
Measuring system for filling vehicles with urea solution via a filling gun.
The component that converts the flow of liquid into a mechanical rotation signal and sends it to the encoder.
3.1.4 encoder encoder
The component that converts the mechanical rotation signal of the flow measurement transducer into an electronic signal and sends it to the control board.
It is a circuit board mainly composed of metering microprocessor, monitoring microprocessor, memory, etc.
Note. The measurement and control main board can receive the electronic signal sent by the encoder, generate filling volume data, and has data communication, sending display, processing
Management, storage, control and other functions.
3.1.6 sight liquid device gas indicator
A device used to observe the presence of air bubbles in a flowing liquid.
3.1.7 adjustment device adjustmentdevice
The device that can adjust the indication error of the vehicle urea filling machine can only make the error curve basically parallel to the offset,
Make the indication error of the vehicle urea filling machine within the maximum allowable error range.
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