JJG 202-2010 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 202-2010	RFQ	ASK	3 days	Railway the embedded casing screw holes Measuring Tool VRof
JJG 202-2007	679	Add to Cart	5 days	Verification Regulation of Autocollimators	Valid
JJG 202-1990	839	Add to Cart	6 days	Verification Regulation of Autocollimator	Obsolete
JJG 202-1980	RFQ	ASK	3 days	(Chinese Industry Standard)	Obsolete

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Basic data

Standard ID: JJG 202-2010 (JJG202-2010)
Description (Translated English): Railway the embedded casing screw holes Measuring Tool VRof
Sector / Industry: Metrology & Measurement Industry Standard
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine

JJG 202-2007: Verification Regulation of Autocollimators

---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 Autocollimators State verification procedures People's Republic of China Autocollimator Autocolimators Posted 2007-02-28 2007-08-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Autocollimator verification procedures Replacing JJG 202-1990 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine, 2007 February 28 ratification and From August 28, 2007 into effect. Focal point. the National Technical Committee geometric angle measurement Drafted by. China Aviation Industry Corporation Beijing Great Wall Institute of Metrology This procedure entrust the country to measure angles geometric measurement technology committee responsible for the interpretation The main drafters of this procedure. Gu Weihua (China Aviation Industry Corporation Beijing Great Wall Metrology Institute) Nine Sun (China Aviation Industry Corporation Beijing Great Wall Metrology Institute) Drafters participate. Tangcui Rong (China Aviation Industry Corporation Beijing Great Wall Metrology Institute) Wang Lin (China Aviation Industry Corporation Beijing Great Wall Metrology Institute)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 metering performance requirements (2) 4.1 Return error (2) 4.2 Optical caused when aiming sensitivity adjustment instruction sheet refers to the zero change (2) 4.3 Optical indication from the collimator drift (2) 4.4 Measurement repeatability (standard deviation) (3) 4.5 Self-collimation of the beam parallel influence of the indicated value (3) 4.6 photoelectric autocollimator discrimination threshold (3) 4.7 Indication error (3) 5 General technical requirements (3) 5.1 Appearance (3) 5.2 Interaction of each part (4) 6 Control of measuring instruments (4) 6.1 Verification condition (4) 6.2 Verification Project (4) 6.3 Verification Methods (5) 6.4 Verification Results Processing (9) 6.5 test cycle (9) Appendix A Autocollimator discrimination threshold test records Example (10) Appendix B Level 2 Autocollimator indication error test result processing example (11) Appendix C Level 3 Autocollimator indication error test sample (13) Appendix D Level 3 flatness tester indication error test result processing example (15) Appendix E with a small angle laser measuring instrument calibration level 1 Autocollimator test records exemplary indication error (18) Appendix F photoelectric autocollimator optical angle gauge verification method (19) Appendix G calibration certificate and test results notice (within the page) format (21) Autocollimator verification procedures

1 Scope

The order applies to photoelectric since collimator, an optical autocollimator, flatness Tester initial verification, subsequent verification And use of the test.

2 Citations

The regulations cited in the following documents JJF1001-1998 common measurement terms and definitions JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF1094-2002 measuring instrument characteristics assessed technical specifications When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Overview

Since the collimator is a method for measuring small angle precision measuring instruments. It is multi-tooth indexing table with the use of the available For measuring multi-faceted prism, angle block measuring angles. Used in conjunction with plane mirror can be used to measure the straightness, level Flatness, parallelism, verticality and measuring the relative positional relationship of other elements. Press Autocollimator can aim in different ways Divided optical autocollimator and photoelectric autocollimator; photoelectric autocollimator their readings in different ways can be divided into Pointer Digital display type, its shape as shown in Figure 1 and Figure 2, field of view, as shown in Figure 3. Figure 1 Optical Autocollimator 1- mirror; 2 - support frame; 3- fastening screws; 4 - a light source; 5- eyepiece; 6- pitch height adjustment knob; 7- micrometer drum; about 8- level adjustment knob For the division value to mm/m is expressed in units of Autocollimator also known flatness tester, such as its shape structure 4, the field of view, as shown in Fig. By dividing the value of the autocollimator divided into three levels, Level 1 is indexing. 0.01 ", dividing the two values. 0.1", 0.2 ", dividing the three values. 0.5", 1 ", 0.0025mm/m, 0.005mm/m. ......

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