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www.ChineseStandard.net Database: 189760 (18 Oct 2025)

JJG 1004-2005 English PDF

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Status: Obsolete

JJG 1004: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 1004-2005	English	639	Add to Cart	3 days [Need to translate]	Verification Regulation of Mechanical Bathythermographs	Obsolete	JJG 1004-2005
JJG 1004-1986	English	RFQ	ASK	3 days [Need to translate]	Metrological Terms and Their Definittions for flow rate	Obsolete	JJG 1004-1986

PDF similar to JJG 1004-2005

Standard similar to JJG 1004-2005

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)

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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