JJG 949-2011 English PDF

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JJG 949-2011: Verification Regulation of Theodolite Verification Devices
Status: Valid

JJG 949: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 949-2011	399	Add to Cart	3 days	Verification Regulation of Theodolite Verification Devices	Valid
JJG 949-2000	479	Add to Cart	4 days	Verification Regulation of Theodolite Verification Devices	Obsolete

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Basic data

Standard ID: JJG 949-2011 (JJG949-2011)
Description (Translated English): Verification Regulation of Theodolite Verification Devices
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Word Count Estimation: 17,157
Date of Issue: 2011-11-14
Date of Implementation: 2012-05-14
Older Standard (superseded by this standard): JJG 949-2000
Quoted Standard: JJG 472-2007
Regulation (derived from): AQSIQ Announcement No. 165 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to the first verification device theodolite test, follow-up testing and the use of checks.

JJG 949-2011: Verification Regulation of Theodolite Verification Devices

---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 Regulation of Theodolite Verification Devices State verification procedures People's Republic of China Theodolite verification device Issued on. 2011-11-14 2012-05-14 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Theodolite Verification means Verification Regulation Replacing JJG 949-2000 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine on November 14, 2011 for approval and self From May 14, 2012 into effect. Focal point. the National Technical Committee of length measuring geometry The main drafting units. China Aviation Industry Corporation Beijing Great Wall Measurement and Testing Technology Institute The study Guangdong Provincial Institute of Metrology Participated in the drafting unit. China Institute of Metrology Aviation Great Wall Measurement and Testing (Tianjin) Co., Ltd. Institute of Surveying and Mapping, PLA Information Engineering University Institute of Seismology, China Earthquake Administration This procedure Geometrical length measuring commissioned National Technical Committee is responsible for interpretation. The main drafters of this procedure. Teachers will be born (China Aviation Industry Corporation Beijing Great Wall Measurement and Testing Technology Institute The study) Huang Jesus (the Guangdong Provincial Institute of Metrology) Tangcui Rong (China Aviation Industry Corporation Beijing Great Wall Measurement and Testing Technology Institute The study) Drafters participate. Liu Wen (China Institute of Metrology) Zhang Hong (CNAC measurement test Great Wall (Tianjin) Co., Ltd.) Xue Ying (Institute of Surveying and Mapping, PLA Information Engineering University) Fuhui Qing (China Institute of Seismology Bureau)

table of Contents

1 Scope (1) 2. References (1) 3 Overview (1) 4 metering performance requirements (2) 4.1 collimator reticle indexing error (2) 4.2 level target collimator position correctness (2) 4.3 straightness alignment of the line of sight of the light pipe (2) 4.4 level targeting Repeatability (2) 4.5 vertical targeting Repeatability (2) 4.6 Maximum vertical multi-tooth indexing table indexing interval error (2) 4.7 standard maximum vertical angle indexing interval error (2) 5 General Requirements (2) 6 Control of measuring instruments (3) 6.1 Verification condition (3) 6.2 Verification Project (3) 6.3 Verification Methods (4) 6.4 Verification Results Processing (8) 6.5 test cycle (8) Examples Appendix A test recording format (9) Appendix B test certificate-page format (11) Theodolite Verification means Verification Regulation

1 Scope

The order applies to theodolite verification device initial verification, subsequent verification and the use of checks. 2. References JJG 472-2007 multi-tooth indexing table For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 Overview

Theodolite verification means for verification theodolite (including optical theodolite, electronic theodolite and total station angle measuring unit Min) of a special device, the main goal of how style and the desktop in the form of multi-tooth indexing two structures. multi-objective type test means 4 to 6 as a horizontal direction collimator infinity objectives, to less than 5 parallel position as the vertical direction of the light pipe To infinity objectives; multi-tooth indexing desktop verification device by the multi-tooth indexing table and parallel to produce a standard angle of the light pipe. Verification device structure shown in Figure 1 and Figure 2. More than one objective type test device of FIG. 1 ~ 6- level target collimator; 7 ~ 10- vertical target collimator; 11- theodolite; 12- test station ......

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