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JJG 441-2008 English PDF

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JJG 441-2008: Verification Regulation of Alternating Current Bridge
Status: Valid

JJG 441: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 441-2008	English	579	Add to Cart	5 days [Need to translate]	Verification Regulation of Alternating Current Bridge	Valid	JJG 441-2008
JJG 441-1986	English	759	Add to Cart	5 days [Need to translate]	Alternating Current Bridge	Obsolete	JJG 441-1986

PDF similar to JJG 441-2008

Standard similar to JJG 441-2008

JJF 1234 JJG 229 JJG 376 JJG 892 JJG 843 JJG 440

Basic data

Standard ID	JJG 441-2008 (JJG441-2008)
Description (Translated English)	Verification Regulation of Alternating Current Bridge
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A55
Classification of International Standard	17.220
Word Count Estimation	25,253
Date of Issue	2008-04-28
Date of Implementation	2008-10-23
Older Standard (superseded by this standard)	JJG 441-1986
Quoted Standard	JJF 1001-1998; JJG 2073-1990; JJG 2075-1990; JJG 2076-1990; JJG 183-1992; JJG 726-1991; IEC 477.2-1979
Regulation (derived from)	?AQSIQ Announcement 2008 No.45
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to initial verification AC bridge, follow-up test and use the test. AC bridge operating frequency is limited to within the range of 20Hz to 100kHz, the working voltage is less than 500V, accuracy range of 0. 001 and below. This procedure does not apply to high-voltage bridge, verification LCR impedance meter and automatic balancing of the bridge.

JJG 441-2008: Verification Regulation of Alternating Current Bridge

---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 Alternating Current Bridge State verification procedures People's Republic of China Alternating current bridge Posted 2008-04-23 2008-10-23 implementation The State Administration of Quality Supervision, Inspection and Quarantine released AC Bridge Verification Regulation Replacing JJG 441-1986 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on April 23, 2008, and from From October 23, 2008 into effect. Focal point. the National Technical Committee on Electromagnetic measurement Drafting units. China Institute of Metrology The measurement procedure commissioned the National Technical Committee is responsible for interpreting electromagnetic The main drafters of this procedure. Wang Chao (China Institute of Metrology) Ruanyong Shun (China Institute of Metrology) Drafters participate. Lu Qing (China Institute of Metrology)

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 Terminology (1) 5 metering performance requirements (2) 5.1 AC bridge primary and secondary parameter parameters of basic error (2) 5.2 accuracy class AC bridge (2) 5.3 Sensitivity (2) 5.4 Insulation Resistance (2) 5.5 dielectric strength (2) 5.6 Effect of the amount of the reference conditions and allow variation (3) 6 General Requirements (3) 6.1 Appearance and line (3) Labeled 6.2 (3) 6.3 shield and connection (3) 6.4 Technical Paper (3) 7 control of measuring instruments (3) 7.1 test conditions (3) 7.2 test equipment (4) 7.3 test items and test methods (5) 7.4 Verification Results processing (11) 7.5 test cycle (11) Appendix A combined loss factor and the quality factor of the standard device Standard (12) Appendix B AC Bridge Some typical examples of specific verification step (14) Appendix C original record format (16) Appendix D Schedule (18) Appendix E test certificate-page format (19) AC Bridge Verification Regulation

1 Scope

The initial verification procedure for an alternating current bridge, verification and subsequent use of the test. Working frequency alternating current bridge Rate limited within the range 20Hz to 100kHz, working voltage is less than 500V; accuracy and range of 0.001 or less. This procedure does not apply to high-voltage bridge, LCR impedance meter verification and automatic balancing bridge.

2 Citations

JJF1001-1998 "common measurement terms and definitions" JJG 2073-1990 "loss factor measuring instruments verification system." JJG 2075-1990 "capacitance measuring instruments verification system" JJG 2076-1990 "inductance Measuring Instruments Systems" JJG 183-1992 "standard capacitor test procedures" JJG 726-1991 "standard inductor test procedures" IEC 477-2-1979 "Laboratory ac resistors" When using this procedure should be noted that the above citations of current valid version.

3 Overview

AC bridge is a schematic comparison with the difference between the two AC impedance measurements, measuring impedance element main parameters and Deputy Senate It means the amount. AC bridge by the ratio, standard, a sine wave power indicator (null indicator), and adjusting means The measured impedance element. According to the principle of balance, and so on can be divided into current, voltage, etc., and so the power bridge. According to the measured object (purpose), it can be divided into Capacitance bridge, resistance bridge, bridge and multimeter inductance bridge. Press balanced manner, it can be divided into complete and incomplete equilibrium level Heng types of bridge.

4 Terminology

Main parameters majorparameter AC impedance element "inductor", "capacitor" and "resistor" in L, C and R values. Deputy parameter sacontparameter AC impedance element "inductor", "capacitor" and "resistance" on the quadrature component Q, D and τ values. The basic measuring range intrinsicmeasuringrange Within the bridge measurement range, allowing the smallest error measurement range. Extended measuring range expandedmeasuringrange Within the bridge measurement range, remove the measurement range other than the basic measurement range. Basic error intrinsicerror (IEC 311-03-08) Bridge at reference conditions, the basic measurement error in the range shown.

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