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JJG 1004-2005 English PDF

US$639.00 ยท In stock
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JJG 1004-2005: Verification Regulation of Mechanical Bathythermographs
Status: Obsolete

JJG 1004: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
JJG 1004-2005639 Add to Cart 3 days Verification Regulation of Mechanical Bathythermographs Obsolete
JJG 1004-1986RFQ ASK 3 days Metrological Terms and Their Definittions for flow rate Obsolete

Similar standards

GB/T 3222.1   JJF 1234   JJF 1396   JJF 1901   JJF 1900   JJG 1010   

Basic data

Standard ID: JJG 1004-2005 (JJG1004-2005)
Description (Translated English): Verification Regulation of Mechanical Bathythermographs
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A57
Classification of International Standard: 17.080
Word Count Estimation: 15,173
Date of Issue: 2005-09-05
Date of Implementation: 2005-12-05
Summary: This standard applies to the hydrogen atom frequency standard initial verification, testing and use of follow-up inspection.

JJG 1004-2005: Verification Regulation of Mechanical Bathythermographs

---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 Mechanical Bathythermographs People's Republic of China National Metrological Verification Procedures Hydrogen atomic frequency standard 2005-09-05 released 2005-12-05 implementation General Administration of Quality Supervision, Inspection and Quarantine released Hydrogen atomic frequency standard verification procedures This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 5,.2005, and since December 5,.2005 shall come into force. Administrative Organization. National Time Frequency Measurement Technical Committee Drafting Organization. China Institute of Metrology This procedure entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this procedure. Gao Xiao Yi (China Institute of Metrology) Participate drafters. Yu Su (China Institute of Metrology) Ma Fengming (China Institute of Metrology)

table of Contents

1 Scope (1) 2 Overview (1) 3 measurement performance requirements (1) 3.1 Frequency stability (1) 3.2 Frequency drift (2) 3.3 Frequency accuracy (2) 3.4 phase noise (2) 3.5 Frequency Temperature Characteristics (2) 4 General technical requirements (2) 4.1 Appearance signs (2) 4.2 other requirements (2) 5 measuring equipment control (2) 5.1 test conditions (2) 5.2 test items and test methods (3) 5.3 test results of the treatment (8) 5.4 test cycle (8) Appendix A test certificate and test result notice (9) Hydrogen atomic frequency standard verification procedures

1 Scope

This procedure applies to the first test of hydrogen atomic frequency standard, follow-up test and in-service test.

2 Overview

Hydrogen atomic frequency standard (hereinafter referred to as hydrogen atomic frequency standard), sub-active and passive two kinds. the active type of atom Resonator is self-excited to produce atomic oscillation frequency oscillation signal, as shown in Figure 1; Passive atomic resonator is outside Under the excitation of the boundary signal, an oscillating signal with atomic transition frequency is generated, as shown in FIG. 2. Both are through a set of frequency lock The phase system locks a crystal oscillator whose output frequency has the same accuracy as the atomic transition frequency for external Community use. Hydrogen atomic frequency standard has a very high stability and accuracy, mainly used in communications, positioning navigation, punctuality, navigation Day monitoring and measurement and other fields. Figure 1 active hydrogen atomic frequency standard Figure 2 passive hydrogen atomic frequency standard

3 measurement performance requirements

3.1 Frequency stability Frequency stability requirements in Table 1.
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