JJG 205-2005 English PDFUS$389.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. JJG 205-2005: Verification Regulation of Mechanical Thermo-hygrometers Status: Valid JJG 205: Historical versions
Basic dataStandard ID: JJG 205-2005 (JJG205-2005)Description (Translated English): Verification Regulation of Mechanical Thermo-hygrometers Sector / Industry: Metrology & Measurement Industry Standard Classification of Chinese Standard: A61 Classification of International Standard: 17 Word Count Estimation: 15,187 Date of Issue: 2005-09-05 Date of Implementation: 2006-03-05 Older Standard (superseded by this standard): JJG 205-1980 Quoted Standard: JJG 2046; JIS B7920; JB/T 6862 Regulation (derived from): State Administration of Quality Supervision, Inspection and Quarantine Notice No. 135 Summary: This standard applies to measurement range of 5 �� ~ 50 ��, 30% RH ~ 95% RH mechanical hygrometer. This standard applies to mechanical hygrometer (hereinafter referred hygrometer hygrometer) the initial verification, testing and use of follow-up inspection. JJG 205-2005: Verification Regulation of Mechanical Thermo-hygrometers---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 Thermo-hygrometers National Metrology Verification Regulations of the People's Republic Mechanical thermometer and hygrometer Released on.2005-09-05 2006-03-05 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Replace JJG 205-1980 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 5,.2005, and It will take effect on March 5,.2006. Focal Point. National Physical and Chemical Metrology Technical Committee Drafting unit. Shanghai Institute of Metrology and Testing Technology This procedure entrusts the National Physical and Chemical Metrology Technical Committee to explain The main drafters of this procedure. Zhang Wendong (Shanghai Institute of Metrology and Testing Technology) Participate in the drafters. Wang Guoyan (Shanghai Institute of Metrology and Testing Technology) Zhang Lifang (Shanghai Institute of Metrology and Testing Technology) table of Contents1 Scope (1) 2 Citations (1) 3 terms (1) 3.1 Mechanical Hygrometer (1) 3.2 Dry and wet watch (1) 3.3 Mechanical Thermometer (1) 4 Overview (1) 5 Metrological performance requirements (2) 5.1 Temperature indication error (2) 5.2 Relative humidity indication error (2) 5.3 Temperature hysteresis/wet hysteresis error (2) 5.4 Repeatability (2) 6 General technical requirements (2) 6.1 Appearance (2) 6.2 Other requirements for pointer thermometers and hygrometers (2) 6.3 Other requirements for recording thermometers and hygrometers (2) 7 Measuring instrument control (3) 7.1 Verification conditions (3) 7.2 Verification project (4) 7.3 Verification method (4) 7.4 Processing of verification results (5) 7.5 Verification cycle (5) Appendix A Verification Record Format (6) Appendix B Verification certificate page format (7) Appendix C Format of the verification result page (8) Appendix D Temperature and Humidity Uniformity and Volatility Test Method for Temperature and Humidity Test Box (9) Mechanical thermometer and hygrometer verification procedures1 ScopeThis procedure is applicable to mechanical thermometers and hygrometers with a measuring range of 5 ° C ~ 50 ° C, 30% RH ~ 95% RH. The first verification, subsequent verification and in-use inspection of the mechanical hygrometer (hereinafter referred to as the hygrometer, hygrometer).2 Citations"Humidity Measurement", Meteorological Press, 1st edition,.1990 JJG 2046-1990 "Humidity measuring instrument measurement and verification system" JISB7920.2000 "Hygrometer - Test Method" JB/T 6862-1993 "Hygrometer" Use of this procedure should take care to use the current valid version of the above cited documents.3 terms3.1 Mechanical hygrometer Using hair, nylon and organic polymer coating materials as moisture sensing components, direct indication of relative humidity Type and record type hygrometer. It includes a hair hygrometer, a hair moisture recorder, and the like. 3.2 dry and wet table Naturally ventilated by a glass liquid thermometer, wet water jacket, water container and humidity checklist or slide rule Dry and wet bulb hygrometer. 3.3 mechanical thermometer and hygrometer By humidity part (mechanical hygrometer or wet and dry meter) and temperature part (bimetal thermometer or glass liquid temperature An integrated temperature and humidity instrument.4 OverviewThe geometrical dimensions of organic polymer materials such as hair, nylon and polyimide will vary with relative humidity. Change. Mechanical thermometers use this feature to make these materials into linear, ribbon-like wetted components or coatings. Coiled into a hairspring-like moisture-sensitive element on an elastic material, and then the geometric amount caused by the humidity change by a mechanical amplifying device The change is indicated by a pointer or recorded with a stylus to directly indicate the relative humidity. Under certain conditions, the relative humidity of the air is a function of the dry bulb temperature and the wet bulb temperature, ie wet. The lower the degree, the lower the temperature of the wet bulb, and the greater the difference between the wet and dry temperature. The wet and dry watch is made by using this principle. The mechanical thermometer and hygrometer is an integrated temperature and humidity instrument composed of a temperature part and a humidity part, and the temperature part It is a bimetal thermometer or a glass liquid thermometer, and the humidity part is a mechanical hygrometer or a wet and dry watch. It is suitable for experiments Measurement of indoor environmental temperature and humidity in rooms, computer rooms, warehouses, and workshops. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JJG 205-2005_English be delivered?Answer: Upon your order, we will start to translate JJG 205-2005_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 205-2005_English with my colleagues?Answer: Yes. The purchased PDF of JJG 205-2005_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. 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Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
