JJG 202: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 202-2010 | English | RFQ |
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3 days [Need to translate]
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Railway the embedded casing screw holes Measuring Tool VRof
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JJG 202-2010
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| JJG 202-2007 | English | 679 |
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5 days [Need to translate]
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Verification Regulation of Autocollimators
| Valid |
JJG 202-2007
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| JJG 202-1990 | English | 839 |
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6 days [Need to translate]
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Verification Regulation of Autocollimator
| Obsolete |
JJG 202-1990
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| JJG 202-1980 | English | RFQ |
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3 days [Need to translate]
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(Chinese Industry Standard)
| Obsolete |
JJG 202-1980
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Standard similar to JJG 202-2010 JJG 249 JJG 404 JJG 134 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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