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JJF 1698-2018 English PDF

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JJF 1698-2018: Program of Pattern Evaluation of Automatic Level Gauges for Measuring the Level of Liquid in Stationary Storage Tanks
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1698-2018	English	789	Add to Cart	6 days [Need to translate]	Program of Pattern Evaluation of Automatic Level Gauges for Measuring the Level of Liquid in Stationary Storage Tanks	Valid	JJF 1698-2018

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Basic data

Standard ID	JJF 1698-2018 (JJF1698-2018)
Description (Translated English)	Program of Pattern Evaluation of Automatic Level Gauges for Measuring the Level of Liquid in Stationary Storage Tanks
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Word Count Estimation	34,396
Date of Issue	2018-02-27
Date of Implementation	2018-05-27
Regulation (derived from)	AQSIQ Announcement No. 26 of 2018
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJF 1698-2018: Program of Pattern Evaluation of Automatic Level Gauges for Measuring the Level of Liquid in Stationary Storage Tanks

---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.
(Tank Level Gauge for Automatic Level Gauge Evaluation) National Metrology Technical Specification of the People's Republic Automatic level gauge evaluation model for storage tanks Published on.2018-02-27 2018-05-27 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Automatic level gauge for storage tanks Type evaluation outline Focal Point. National Pressure Measurement Technical Committee Drafting unit. Shanghai Institute of Metrology and Testing Technology National Large Capacity First Metering Station This Code entrusts the National Pressure Measurement Technical Committee to explain The main drafters of this specification. Hu Anlun (Shanghai Institute of Metrology and Testing Technology) Zhang Yongbo (National Large Capacity First Metering Station) Participate in the drafters. Zhang Tianyi (Shanghai Institute of Metrology and Testing Technology)

Introduction (II) 1 Scope (1) 2 References (1) 3 terms (1) 4 Overview (2) 5 Legal management requirements (3) 5.1 Unit of measurement (3) 5.2 Maximum allowable error (3) 5.3 Signs and logos (4) 5.4 External structural design requirements (4) 6 Measurement requirements (4) 6.1 indication error (4) 6.2 Hysteresis (4) 6.3 Identification threshold (4) 7 General technical requirements (4) 7.1 Normal working conditions (4) 7.2 Reference working conditions (4) 7.3 Appearance and Structure (4) 7.4 Impact test (5) 7.5 Damp heat-condensation cycle test (5) 7.6 Immunity test (5) 8 type evaluation items (6) 9 Test conditions and methods of the test project (7) 9.1 Conditions for type evaluation (7) 9.2 Test Equipment (7) 9.3 indication error (8) 9.4 Hysteresis (8) 9.5 Authentication Threshold (8) 9.6 Appearance and Structure (8) 9.7 Impact Quantity Test (9) 9.8 Damp heat-condensation cycle test (10) 9.9 Immunity test (10) Judgment principle of 10 type evaluation results (13) Appendix A Original Record Format (14)

Introduction

JJF 1016 "Guidelines for the Preparation of Types of Measuring Instruments", JJF 1001 "General Terms and Definitions of Measurement", JJF 1059.1 "Measurement and Representation of Measurement Uncertainty" together constitutes the basic series of specifications for the revision of this specification. This syllabus combines China's national conditions and adopts the International Legal Organization (OIML) International Recommendation R85-1. Automatic liquid level gauges for fixed tank level measurement - Part 1 . Measurements and technical requirements; Part 2. And detection method" (Automaticlevelgaugesformeasuringthelevelofliquidinstationarystor- agetanks-Part 1.Metrologicalandtechnicalrequirements;Part 2.Metrological Part of the controlandtests). The terminology part of the syllabus uses JJF 1009 "Capacity Measurement Terms and Definitions", JJG168 "Vertical Metal Tank Capacity" Volume", GB/T 13894 "Liquid measurement method for petroleum and liquid petroleum products (manual method)"; technical requirements refer to JJG971 "Level Meter", GB/T 2423 "Environmental Testing of Electrical and Electronic Products", GB/T 17626 "Electromagnetic Compatibility Test and Measurement Technology, etc. This syllabus is the first release. Automatic level gauge evaluation model for storage tanks

1 Scope

This outline applies to automatic level gauges (hereinafter referred to as level gauges) installed on large storage tanks for trade settlement. Type evaluation.

2 reference files

This outline refers to the following documents. JJG168-2005 Vertical metal tank capacity JJG971 level gauge JJF 1009-2006 Capacity Measurement Terms and Definitions GB/T 2423.1 Environmental testing of electrical and electronic products - Part 2. Test methods Test A. Low temperature GB/T 2423.2 Environmental testing of electric and electronic products - Part 2. Test method Test B. High temperature GB/T 2423.4 Environmental testing of electric and electronic products - Part 2. Test method test Db. alternating wet Heat (12h 12h cycle) GB/T 13894 Liquid and liquid petroleum products liquid level measurement method (manual method) GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.3 Electromagnetic compatibility test and measurement technology RF electromagnetic field radiation immunity test GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test GB/T 17626.5 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test GB/T 17626.6 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity of RF field induction GB/T 17626.11 Electromagnetic compatibility test and measurement techniques for voltage dips, short interruptions and voltage changes Immunity test GB/T 17626.29 Electromagnetic compatibility test and measurement technology DC power input port voltage dip, short-term Immunity test for interruption and voltage change OIMLR85-1 Part 2. Measurement control and testing methods (Automaticlevelgaugesformeasuringthelevelofliq- uidinstationarystoragetanksPart 1.Metrologicalandtechnicalrequirements;Part 2. Metrologicalcontrolandtests) For dated references, only dated versions apply to this syllabus; undated quotations The latest version (including all amendments) applies to this syllabus.

3 terms

3.1 automatic level gauge automaticlevelgauge; ALG Measuring the level of the liquid in the tank by sensors used in fixed large tanks for trade settlement, and An automatic instrument (including the display portion) that calculates the change in volume of the liquid in the tank, which can be contact or non-contact

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