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JJF 1784-2019 English PDF

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US$1489.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1784-2019: Program of Pattern Evaluation for Total Stations
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1784-2019	1489	Add to Cart	8 days	Program of Pattern Evaluation for Total Stations	Valid

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Basic data

Standard ID: JJF 1784-2019 (JJF1784-2019)
Description (Translated English): Program of Pattern Evaluation for Total Stations
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Classification of International Standard: 17.040
Word Count Estimation: 70,733
Date of Issue: 2019
Date of Implementation: 2020-03-31
Issuing agency(ies): State Administration for Market Regulation

JJF 1784-2019: Program of Pattern Evaluation for Total Stations

---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.
(Total station type evaluation outline) National Measurement Technical Specification of the People's Republic of China Total station type evaluation outline Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Total station type evaluation outline Centralized unit. National Technical Committee for Geometric Length Measurement Main drafting unit. National Photoelectric Rangefinder Testing Center Participated in the drafting unit. Suzhou Yiguang Instrument Co., Ltd. The National Technical Committee for Geometric Length Measurement is responsible for the interpretation of this specification The main drafters of this specification. Qi Weijun (National Photoelectric Rangefinder Testing Center) Zhai Qingbin (National Photoelectric Rangefinder Testing Center) Wu Xiujuan (National Photoelectric Rangefinder Testing Center) Zhang Rui (National Photoelectric Rangefinder Testing Center) Participating drafters. Shen Chenyan (Suzhou Yiguang Instrument Co., Ltd.)

Introduction (Ⅲ) 1 Scope (1) 2 References (1) 3 Overview (1) 4 Legal management requirements (2) 4.1 Unit of measurement (2) 4.2 Measurement legal signs and measurement instrument identification (2) 4.3 Provide technical documents and test prototypes for review (2) 5 Measurement requirements (3) 5.1 Resolution of the telescope (3) 5.2 Telescope magnification (3) 5.3 Effective aperture of telescope objective lens (3) 5.4 The perpendicularity of the level axis and the vertical axis (3) 5.5 Correctness of the rotation of the collimator (3) 5.6 The perpendicularity of the collimation axis and the horizontal axis (3) 5.7 The perpendicularity of the horizontal axis and the vertical axis (3) 5.8 Vertical index difference (3) 5.9 Compensator performance (3) 5.10 Telescope focusing operation error (3) 5.11 Alignment error of the aligner (3) 5.12 Standard deviation of horizontal direction in one measurement (3) 5.13 Standard deviation of vertical angle measurement in one measurement (3) 5.14 The correctness of the three-axis relationship between transmission, reception and sighting (3) 5.15 Modulated light phase uniformity (3) 5.16 Discrimination (3) 5.17 Periodic error (3) 5.18 Precision measuring ruler frequency (4) 5.19 Standard deviation of addition constant and multiplication constant (4) 5.20 Repeatability of distance measurement (4) 5.21 Scope (4) 5.22 Comprehensive standard deviation of distance measurement (4) 5.23 Standard deviation of distance measurement without cooperation target (4) 6 General technical requirements (5) 6.1 Appearance (5) 6.2 General functions (5) 6.3 The plumbness of the vertical wire of the telescope (6) 6.4 Working temperature test (6) 6.5 Transportation and environmental testing (6) 6.6 Electromagnetic compatibility test (6) 6.7 Shell protection ability test (6) 6.8 Laser emission power (7) 7 Type evaluation items and measuring instruments used (7) 7.1 Total station type evaluation items (7) 7.2 Measuring instruments used in the project (8) 8 Test methods and conditions of test items (9) 8.1 Legal management requirements (9) 8.2 Measurement requirements (9) 8.3 General technical requirements (35) 9 Judgment and processing of type evaluation results (40) 10 Type evaluation original record format (40) Appendix A Original Record Format of Total Station Type Evaluation Test (41) Appendix B. Comprehensive Standard Deviation Test for Ranging (Joint Assessment Method) (63)

Introduction

This outline is based on JJF 1016-2014 "Guidelines for the Compilation of Outlines for Measuring Apparatus Type Evaluation" and JJF 1015-2014 Compilation of the requirements of the "General Specification for Type Evaluation of Measuring Instruments". This outline mainly refers to JJG100-2003 "Total Station Electronic Speed Tester" in the test items and test procedures And JJG703-2003 "photoelectric rangefinder" related regulations. This outline is published for the first time. Total station type evaluation outline

1 Scope

This type evaluation program is applicable to the type evaluation of domestic and imported total stations with various accuracy levels.

2 Reference documents

JJF 1069 Assessment Standards for Legal Metrology Verification Institutions GB/T 2423.4-2008 Environmental testing for electrical and electronic products. Part 2.Test method test Db. Alternating damp heat (12h 12h cycle) GB/T 2423.10-2019 Environmental Test Part 2.Test Method Test Fc. Vibration (Sinusoidal) GB/T 4208-2017 enclosure protection level (IP code) GB/T 17626.2-2018 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology RF electromagnetic field immunity test GB/T 25480-2010 Basic environmental conditions and test methods for transportation and storage of instruments and meters JB/T 9328-1999 Resolution board For dated reference documents, only the dated version applies to this outline; for those without date references The latest version (including all amendments) is applicable to this outline.

3 Overview

The total station is a kind of automatic and digital three-way instrument with functions of distance measurement, angle measurement, calculation and data recording and transmission. Dimensional coordinate measurement and positioning system. It consists of photoelectric distance measuring unit, electronic angle measuring unit, microprocessor unit and electronic recording unit Composition is a widely used in control survey, topographic survey, cadastral and real estate survey, industrial survey and offshore positioning Electronic measuring instruments. The accuracy level of the total station is divided into four levels according to the angle measurement and the distance measurement, expressed by Qβ, d (the subscript β is the angle measurement level, The subscript d is the ranging level. Such as QⅠ, Ⅱ, it means that the angle measurement of the total station is Ⅰ, and the distance measurement is Ⅱ). The accuracy level of the angle measuring part of the total station is divided into four levels according to the nominal standard deviation mβ of the horizontal direction of the first measurement. all The accuracy level of the distance measuring part of the station instrument is divided into four levels according to the nominal distance standard deviation md. The expression of the standard deviation of the nominal distance of the total station is. md=ab·D In the formula. a---Fixed part of the standard deviation of nominal distance measurement, mm; b---Proportional coefficient of nominal deviation standard deviation, mm/km; D---Measure distance, km. See Table 1 for the division of the accuracy level of the total station. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1784-2019_English be delivered?

Answer: Upon your order, we will start to translate JJF 1784-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1784-2019_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1784-2019_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.