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JJF 1081-2002 English PDF

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JJF 1081-2002: Calibration Specification for Plumb Instruments
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1081-2002	English	599	Add to Cart	4 days [Need to translate]	Calibration Specification for Plumb Instruments	Valid	JJF 1081-2002

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Standard similar to JJF 1081-2002

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Basic data

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	23,280
Date of Issue	2002-04-02
Date of Implementation	2002-07-01
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

---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.
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.)

1 Scope (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.

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