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JJF 1915-2021 English PDF

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US$319.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1915-2021: (Inclinometer calibration specification)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1915-2021	319	Add to Cart	4 days	(Inclinometer calibration specification)	Valid

Similar standards

JJF 1951 JJF 1561 JJF 1406 JJF 1914 JJF 1917 JJF 1913

Basic data

Standard ID: JJF 1915-2021 (JJF1915-2021)
Description (Translated English): (Inclinometer calibration specification)
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Word Count Estimation: 16,132
Issuing agency(ies): State Administration for Market Regulation

JJF 1915-2021: (Inclinometer calibration specification)

---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.
(Inclinometer calibration specification) National Metrology Technical Specification of the People's Republic of China Inclinometer Calibration Specifications Published on 2021-07-28 2022-01-28 Implementation Released by the State Administration for Market Regulation Inclinometer Calibration Specifications Replacing JJF 1119-2004 JJF 1083-2002 Focal Point. National Technical Committee on Geometric Length Measurement Main drafting unit. Beijing Institute of Metrology and Testing Sciences Participating in the drafting unit. China Institute of Metrology Changzhou Institute of Measurement and Testing Technology This specification is interpreted by the National Technical Committee of Geometry and Length Measurement The main drafters of this specification. Liu Xingrong (Beijing Institute of Metrology and Testing) Wang Zhichao (Beijing Institute of Metrology and Testing) Zhang Manshan (Beijing Institute of Metrology and Testing) Wang Xue (Beijing Institute of Metrology and Testing) Quan Yizhi Participating drafters. Huang Yao (China Institute of Metrology) Zhou Jun (Changzhou Institute of Metrology and Testing Technology)

content

Introduction (Ⅱ) 1 Scope(1) 2 Overview(1) 3 Metrology Characteristics(2) 3.1 The parallelism between the working faces of the electronic digital display inclinometer with multiple working faces (2) 3.2 The verticality between the working faces of the electronic digital display inclinometer with multiple working faces (2) 3.3 Zero value error(2) 3.4 Zero-value error consistency (2) 3.5 Indication error(2) 3.6 The repeatability of the displayed value of the electronic digital inclinometer (2) 4 Calibration Conditions(2) 4.1 Environmental conditions (2) 4.2 Standards and other equipment for calibration (2) 5 Calibration items and calibration methods (3) 5.1 The parallelism between the working faces of the electronic digital display inclinometer with multiple working faces (3) 5.2 The verticality between the working faces of the electronic digital display inclinometer with multiple working faces (3) 5.3 Zero value error(4) 5.4 Zero-value error consistency(4) 5.5 Indication error(4) 5.6 Repeatability of the displayed value of the electronic digital inclinometer (4) 6 Calibration results (5) 7 Recalibration interval(5) Appendix A Special Fixtures(6) Appendix B Indication Error Measurement Result Uncertainty Evaluation Example(7)

Introduction

JJF 1071-2010 "Rules for the Compilation of National Metrology Calibration Standards", JJF 1001 "General Metrology Terms and Definitions," JJF 1059.1-2012 "Assessment and Representation of Measurement Uncertainty" together constitute the basis for the preparation of this specification A series of specifications, this specification refers to JB/T 11104-2011 "Electronic Digital Display Inclination Ruler", JB/T 9344- 1999 "Optical Inclinometer", JG142-2002 "Electronic Level for Construction", SJ/T 11276-2002 "Digital Specification for Angle Measuring Instruments. This specification replaces JJF 1119-2004 "Electronic Level Calibration Specification" and JJF 1083-2002 "Optical Tilt" Compared with JJF 1119-2004 and JJF 1083-2002, the main technical changes are as follows. ---Expanded the scope of application of the specification, adding type II rectangular electronic digital display inclinometer, type III square box electronic digital display Inclinometer related items; --- Classify the electronic level into the type I type strip electronic digital display inclinometer; ---Increase the parallelism between the working faces of the multi-working face electronic digital display inclinometer; ---Increased the verticality between the working faces of the electronic digital display inclinometer with multiple working faces; --- Increase the uncertainty evaluation of the measurement result of the optical inclinometer indication error; --- Revised the description of the calibration method for the zero value error of the electronic digital inclinometer; --- Revised the description and calculation of the calibration method of the inclinometer indication value error; --- Revised the description and calculation of the repeatability calibration method of the electronic digital inclinometer; ---Re-evaluated the uncertainty of the measurement result of the display value error of the electronic digital inclinometer; --- Deleted the use of dodecahedron and autocollimator for indication error calibration in JJF 1083-2002 method; --- Deleted the return error item in the measurement performance requirements of JJF 1119-2004; --- Deleted the calculation examples of display error, repeatability of angle measurement, and return error in Appendix B of JJF 1119-2004; --- Deleted the calculation example of the maximum indication error of the optical inclinometer in Appendix A of JJF 1083-2002. The previous releases of JJF 1083-2002 are as follows. ---JJF 1083-2002; ---JJG104-1986. The previous releases of JJF 1119-2004 are as follows. ---JJF 1119-2004. Inclinometer Calibration Specifications

1 Scope

This specification applies to the calibration of electronic digital inclinometers and optical inclinometers.

2 Overview

Inclinometer is an instrument used to measure the inclination angle of the measured object relative to the horizontal plane or the angle between two measured objects. Including electronic digital display inclinometer with electronic inclination sensor and optical inclinometer with mechanical inclination measuring mechanism. Inclinometer Widely used in machinery, automobiles, railways, construction, water conservancy and other related industries. Fig.1 Type I strip electronic digital display inclinometer 1-display;2-level bubble;3-working surface;4-function key Figure 2 Type II rectangular electronic digital display inclinometer 1-side working surface; 2-upper working surface; 3-display screen; 4-bottom working surface; 5-function key Figure 3 Type III square box electronic digital display inclinometer 1-side working surface; 2-upper working surface; 3-display screen; 4-function key; 5-bottom working surface ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1915-2021_English be delivered?

Answer: Upon your order, we will start to translate JJF 1915-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1915-2021_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1915-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.