JJG 462-2004 English PDFUS$679.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. JJG 462-2004: Verification Regulation of Secondary Standard Ionization Vacuum Gauges Status: Obsolete JJG 462: Historical versions
Basic dataStandard ID: JJG 462-2004 (JJG462-2004)Description (Translated English): Verification Regulation of Secondary Standard Ionization Vacuum Gauges Sector / Industry: Metrology & Measurement Industry Standard Classification of Chinese Standard: A53 Classification of International Standard: 17.100 Word Count Estimation: 16,138 Date of Issue: 2004-09-21 Date of Implementation: 2005-03-21 Older Standard (superseded by this standard): JJG 462-1986 Quoted Standard: 2004 technical regulations issued by national metrology (industrial measurement 2005 Volume 15, Issue 1) Regulation (derived from): 2004 technical regulations issued by national metrology (industrial measurement 2005 Volume 15, Issue 1) Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine Summary: This standard applies to measuring range (5 �� 10 ^ (-4) ~ 1 �� 10 ^ (-1)) Pa's second standard ionization vacuum gauge initial verification, testing and use of follow-up inspection. JJG 462-2004: Verification Regulation of Secondary Standard Ionization Vacuum Gauges---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 Secondary Standard Ionization Vacuum Gauges National Metrology Verification Regulations of the People's Republic Second-class standard ionization gauge Released on.2004-09-21 2005-03-21 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Second-class standard ionization vacuum gauge verification procedure Replace JJG 462-1986 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 21,.2004, and It will take effect on March 21,.2005. Focal Point. National Pressure Measurement Technical Committee Main drafting unit. China Institute of Metrology Dalian Metrology Testing Institute Participated in drafting unit. Beijing Xinghua Vacuum Meter Factory This regulation entrusts the National Pressure Measurement Technical Committee to explain The main drafters of this procedure. Yu Hongyan (China Institute of Metrology) Zhao Shiyan (China Institute of Metrology) Qu Chuanmin (Dalian Metrology Testing Institute) Participate in the drafters. Xu Ziyong (Beijing Xinghua Vacuum Instrument Factory) table of Contents1 Scope (1) 2 Overview (1) 3 Metrological performance requirements (2) 3.1 Control unit (2) 3.2 indication check (2) 4 General technical requirements (2) 4.1 Control Unit (2) 4.2 Regulation (3) 5 measuring instrument control (3) 5.1 Verification conditions (3) 5.2 Verification project (3) 5.3 Verification method (4) 5.4 Processing of verification results (7) 5.5 Verification cycle (8) Appendix A Verification Certificate (inside page) format (9) Appendix B Verification Result Notice (inside page) format (10) Appendix C Verification Record Format (11) Second-class standard ionization vacuum gauge verification procedure1 ScopeThis procedure is applicable to the first inspection of a second-class standard ionization vacuum gauge with a measurement range of (5×10-4~1×10-1) Pa. Determination, follow-up verification and in-use inspection.2 OverviewThe second-class standard ionization vacuum gauge consists of a control unit and a standard regulation (hereinafter referred to as regulation). The working principle of the second-class standard ionization vacuum gauge (Fig. 1) is based on the gas pressure p and gas to be measured under certain conditions. The ion current Ii is proportional, and the formula is as follows. p=1S Ie (1) Where p---the gas pressure to be tested, Pa; S---regulation coefficient, Pa-1; Ii---collecting the ion current, A; Ie---emission current, A. Figure 1 Working principle of ionization vacuum gauge Va-acceleration pole to cathode center point voltage; Vf-cathode center point to ground voltage; Ie-emission current; Ii-collector ion current; A-accelerator; F-cathode; C-collector When the regulatory factor is verified, the formula (1) can be written as S=1p0 Ie (2) Where p0---standard pressure, Pa. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JJG 462-2004_English be delivered?Answer: Upon your order, we will start to translate JJG 462-2004_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of JJG 462-2004_English with my colleagues?Answer: Yes. The purchased PDF of JJG 462-2004_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+ countriesQuestion 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 462-2004?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 462-2004 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. |
