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JJF 1081-2002 (JJF1081-2002)

JJF 1081-2002_English: PDF (JJF1081-2002)
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JJF 1081-2002English599 Add to Cart 4 days [Need to translate] Calibration Specification for Plumb Instruments JJF 1081-2002 Valid JJF 1081-2002

Standard ID JJF 1081-2002 (JJF1081-2002)
Description (Translated English) Calibration Specification for Plumb Instruments
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Word Count Estimation 23,285
Date of Issue 2002-04-02
Date of Implementation 2002-07-01
Drafting Organization Henan Provincial Institute of Measurement and Testing
Administrative Organization National Technical Committee geometric angle measurement
Issuing agency(ies) State Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to vertical collimator calibration.

JJF 1081-2002
Calibration Specification for Plumb Instruments
National Metrology Technical Specification of the People's Republic
Vertical gauge calibration specification
Released on.2002-04-02
2002-07-01 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on April 2,.2002, and
Implemented on July 1,.2002.
Focal Point. National Geometric Angle Measurement Technical Committee
Drafting unit. Henan Institute of Metrology and Testing
Henan Province Surveying and Mapping Product Quality Supervision and Inspection Station
Beijing Surveying and Mapping Length Certification Center
Suzhou Yiguang Instrument Co., Ltd.
This specification is interpreted by the focal point
The main drafters of this specification.
Zhang Weidong (Henan Province Metrology and Testing Institute)
Wang Dongmei (Henan Province Surveying and Mapping Product Quality Supervision and Inspection Station)
Li Wei (Beijing Surveying and Mapping Length Certification Center)
Participate in the drafters.
Fu Xiaoping (Suzhou Yiguang Instrument Co., Ltd.)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
4 Measurement characteristics (1)
5 Calibration conditions (2)
5.1 Environmental conditions (2)
5.2 Standards and other equipment for calibration (3)
6 Calibration items and calibration methods (3)
6.1 Telescope resolution (3)
6.2 The perpendicularity of the axis of the tubular level to the vertical axis (4)
6.3 Correctness of the rotation of the sighting unit (4)
6.4 Telescope focusing error (4)
6.5 Automatic Anping Compensator Compensation Error (5)
6.6 Automatic leveling compensator automatic placement error (6)
6.7 Coaxiality of the vertical axis and the telescope sight axis (or laser optical axis) (7)
6.8 Coaxiality of the laser optical axis and the telescope's collimation axis (8)
6.9 A standard deviation of the measurement standard (8)
6.10 Concentricity of the optical axis of the optical (laser) point to the vertical axis (10)
7 Calibration result expression (10)
8 re-study interval (10)
Appendix A Calculation Table for Calibration (11)
Appendix B Calibration Certificate Cover Format (16)
Appendix C Calibration Certificate Contents (17)
Appendix D Calibration Result Format (18)
Vertical gauge calibration specification
1 Scope
This specification applies to the calibration of the vertical gauge.
2 Citations
This specification refers to the following documents.
JB/T 9319-1999 vertical gauge
JJF 1059-1999 Measurement Uncertainty Evaluation and Representation
JJF 1001-1998 General measurement terms and definitions
Use of this specification should be done with the current valid version of the above cited documents.
3 Overview
The vertical gauge is an optical instrument that gives a vertical line of lead based on the gravity line. It is used in construction and equipment installation
The measurement of the small horizontal deviation of the relative plumb line and the point transfer of the plumb line can be divided into the level bubble according to the working principle.
Type and automatic compensator type (including hanging pendulum type and automatic compensator type); according to its performance can be divided into precision type, common
Three types and simple type. The common structural form is shown in Figure 1.
figure 1
4 Measurement characteristics
The metering characteristics are shown in Table 1.