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JJG 2076-2024 English PDF

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Q: Should I purchase the latest version JJG 2076-2024?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 2076-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 2076-2024: Measuring Instruments for Inductance
Status: Valid

JJG 2076: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 2076-2024	239	Add to Cart	3 days	Measuring Instruments for Inductance	Valid
JJG 2076-1990	199	Add to Cart	2 days	Verification Scheme of Inductance Measuring Instruments	Obsolete

Basic data

Standard ID: JJG 2076-2024 (JJG2076-2024)
Description (Translated English): Measuring Instruments for Inductance
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 11,180
Date of Issue: 2024-02-07
Date of Implementation: 2024-08-07
Issuing agency(ies): State Administration for Market Regulation

JJG 2076-2024: Measuring Instruments for Inductance

---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.
Table of National Metrology Verification System of the People's Republic of China Inductance measuring instruments Released on 2024-02-07 2024-08-07 Implementation The State Administration for Market Regulation issued Inductance measuring instrument calibration system table Replace JJG 2076-1990 Responsible unit. National Electromagnetic Metrology Technical Committee Drafting unit. China Institute of Metrology This verification system table is entrusted to the National Electromagnetic Metrology Technical Committee for interpretation. Drafted by. Yang Yan (China Institute of Metrology) Wang Wei (China National Institute of Metrology) Chen Yan (China Institute of Metrology)

Introduction (II) 1 Scope(1) 2 Measurement standards (1) 2.1 Overview(1) 2.2 Composition of measurement standards (1) 2.3 Parameters of the metrology benchmark (1) 2.4 Delivery method (1) 3 Measurement standards (1) 3.1 Overview(1) 3.2 Inductor operating standards (1) 3.3 Standard Inductors(2) 3.4 Standard inductor bridge (3) 4 Working measuring instruments (3) 4.1 Inductors and inductor boxes (3) 4.2 Inductor bridge (4) 5 Block diagram of the inductance measuring instrument calibration system (4)

Introduction

This verification system table is compiled in accordance with JJF1104-2003 "Rules for Compilation of National Metrology Verification System Tables". This verification system table replaces JJG 2076-1990 "Inductance Measuring Instruments", and the main technical changes are as follows. ---The method of reproducing the value of the inductance benchmark is changed from the resonance method to the Maxwell Wien bridge method to reproduce the inductance unit The relative expanded uncertainty is 4×10-6 (k=2), and the value of the reproduced inductance increases by 10mH; ---The resonant bridge is cancelled; ---The inductance working reference device is changed to an inductance working reference bridge device and used as a component of the inductance working reference part; --- Expand the frequency range of inductance measurement standards and working measuring instruments to 10MHz; --- The inductance measurement standard has reclassified the accuracy level; --- The value of the coverage factor k in the uncertainty statement is uniformly changed to 2. The previous versions of this verification system table are as follows. ---JJG 2076-1990. Inductance measuring instrument calibration system table

1 Scope

This calibration system is suitable for inductance meters with an inductance range of 1μH~10kH and a frequency range of 20Hz~10MHz. Transfer of measurement value of measuring instruments. This verification system table specifies the basic metrological parameters of the inductance reference and the conversion of the inductance value from the reference to the metrological standard. The transfer relationship from the standard instrument to the working measuring instrument, the method of value transfer and the measurement capability during value transfer.

2 Measurement basis

2.1 Overview The inductance benchmark is used to reproduce the unit value of inductance in my country. The unit of inductance is Henry, and the symbol is H. 2.2 Composition of measurement benchmarks The inductance reference consists of an inductance reference bridge, a standard capacitor, a standard AC resistor and a transition standard inductor (group) composition. 2.3 Parameters of the metrology benchmark The inductance benchmark reproduces the inductance unit values of 10mH and 100mH, the frequency is 1kHz, and the relative expansion is not correct. The annual stability index of the transition standard inductor (group) is ±3×10-5. 2.4 Delivery Method The inductance benchmark is based on the Maxwell Wien bridge principle to trace the inductance value to the capacitance measurement benchmark and the resistance measurement benchmark. The transition standard inductor (group) is used to transfer the value to the lower-level measurement standard using the transition transfer method.

3 Measurement standards

3.1 Overview Inductance measurement standards are divided into inductance working standards, standard inductors and standard inductance bridges (including LCR meters). Standard inductors and standard inductor bridges are classified by grades or levels of accuracy. 3.2 Inductor operating standards 3.2.1 The inductance working reference consists of an inductance working reference bridge device and a standard inductor. 3.2.2 The inductance working reference bridge device is based on the Maxwell Wien bridge principle and operates at frequencies of 100 Hz, 1 kHz or The inductance value is transferred at 10kHz, the measurement range is 1μH~100H, and the relative expanded uncertainty range is (2×10-5~3×10-3)(k=2). 3.2.3 The nominal value range of standard inductors in the inductance working standard is 1μH~100H, and its frequency characteristics can be The inductance value at a frequency of 20Hz~10MHz is determined by the over-resonance method, network analysis method or two-frequency method. The actual inductance value at 100Hz, 1kHz or 10kHz is obtained after frequency correction. The annual stability index range is ±(2×10-5~3×10-3), the relative expanded uncertainty range is (2×10-5~3×10-3)(k=2). 3.2.4 The inductance working standard adopts the 10.1 ratio comparison method to expand the range, and adopts the direct measurement method or replaces The standard inductor in the lower level measurement standard is transferred by direct measurement method. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 2076-2024_English be delivered?

Answer: Upon your order, we will start to translate JJG 2076-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 2076-2024_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 2076-2024_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.

Question 5: Should I purchase the latest version JJG 2076-2024?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 2076-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.