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GB/T 7603-2012 English PDF

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Q: Should I purchase the latest version GB/T 7603-2012?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7603-2012 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$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7603-2012: Determination of the aromatic carbon content in mineral insulating oil
Status: Valid

GB/T 7603: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7603-2012	169	Add to Cart	3 days	Determination of the aromatic carbon content in mineral insulating oil	Valid
GB/T 7603-1987	199	Add to Cart	2 days	Determination of the aromatic carbon content in mineral insulating oils by infrared spectrum method	Obsolete

Similar standards

DB11/ 238 DB11/ 239 DL/T 1498.2 GB/T 7602.4 GB/T 7598

Basic data

Standard ID: GB/T 7603-2012 (GB/T7603-2012)
Description (Translated English): Determination of the aromatic carbon content in mineral insulating oil
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E38
Classification of International Standard: 75.100
Word Count Estimation: 7,799
Older Standard (superseded by this standard): GB/T 7603-1987
Regulation (derived from): National Standards Bulletin No. 13 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the relative molecular mass range from 290 to 500 and the aromatic carbon content of 2% to 35 % range of mineral insulating oils aromatic carbon content of infrared spectrometry. This standard applies to mineral insulating oils in

GB/T 7603-2012: Determination of the aromatic carbon content in mineral insulating oil

---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.
ICS75.100 E38 National Standards of People's Republic of China Replacing GB/T 7603-1987 Mineral insulating oils aromatic carbon content determination Issued on. 2012-11-01 2012-06-29 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Preface Ⅰ 1 Scope 1 Principle 2 1 3 1 instruments and reagents Step 4 Test 1 5 Results Calculation 2 Precision 3 6

Foreword

This standard rule according to GB/T 1.1-2009 given draft. This standard replaces GB/T 7603-1987 "mineral insulating oils aromatic carbon content assay (infrared spectroscopy)." This standard and GB/T 7603-1987 compared to the main technical differences are. --- Original standard content formats appropriate to rearrange; --- Increasing the Fourier transform infrared spectroscopy; --- Original standard test procedure was amended to increase the path length of the liquid pool measuring step; --- Original standard calculation results in an increase of the calculation formula; --- Increasing the Fourier transform infrared spectroscopy test results precision. The standard proposed by China Electricity Council. This standard by the National Standardization Technical Committee of Chemical Electrical (SAC/TC322) centralized. This standard was drafted. Xi'an Thermal Power Research Institute Co., Ltd. The main drafters of this standard. Feng Li Ping, Xiaoxiu Yuan, Meng Yuchan, Zhangxing Mei. This standard replaces the standards previously issued as follows. --- GB/T 7603-1987. Mineral insulating oils aromatic carbon content determination

1 Scope

This standard specifies the relative molecular mass range from 290 to 500 and the aromatic carbon content in mineral insulating oils aromatic carbon in the 2% to 35% range Content infrared spectrometry. This standard applies to the determination of mineral insulating oil aromatic carbon content. Principle 2 According to the calculated spectra are absorbed aromatic ring absorbance at 1610cm-1 absorption peak of the infrared analysis of samples, the absorbance is an aromatic carbon content Function of the amount.

3 instruments and reagents

3.1 pairs beam infrared spectrophotometer or the Fourier transform infrared spectroscopy. 1610cm-1 band at a resolution higher than 3cm-1. 3.2 absorption cell. IR liquid cell variable or fixed path length, the path length between 0.1mm ~ 0.5mm, is accurate to 0.003mm. Relationship between aromatic carbon content in the sample being measured and the path length in Table 1. Table 1 Relationship between aromatic carbon content in the sample and the path length Aromatic carbon content /% liquid absorption cell path length/mm ≤5 ≈0.5 5 ~ 13 ≈0.3 13 ~ 35 ≈0.1 3.3 glass syringes. 1mL or 2mL glass syringe. 3.4 Pipette. small suction ears ball. 3.5 Carbon tetrachloride. analytically.

4 Test Procedure

4.1 In accordance with the manufacturer's instructions, the instrument will adjust to working condition. 4.2 Determination of liquid cell path length The standard assay using interference fringes, the adjustable or fixed path length of the empty sump on the optical path of the measuring device to scan, scan range 1900cm-1 ~ 600cm-1, as shown in the interference fringes obtained (if sump louver installation uneven contain maximum and minimum values \u200b\u200bof the rules shown in Figure 1 OK, not the interference fringes rules should open reinstalled.) According to the number of resulting interference fringes and the corresponding wave number, substituting public Formula (1) was determined path length of the pool. L = n2 γ1-γ × 10 (1) ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 7603-2012_English be delivered?

Answer: Upon your order, we will start to translate GB/T 7603-2012_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 GB/T 7603-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 7603-2012_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 GB/T 7603-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7603-2012 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.