標(biāo)準(zhǔn)編號(hào):	JJG 617-1996
中文名稱(chēng):	數(shù)字溫度指示調(diào)節(jié)儀檢定規(guī)程
英文名稱(chēng):	Verification Regulation of Digital Temperaure Indicators and Controllers
中標(biāo)分類(lèi):	A54    熱學(xué)計(jì)量
行業(yè)分類(lèi):	JJ    國(guó)家計(jì)量標(biāo)準(zhǔn)
發(fā)布機(jī)構(gòu):	國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局
實(shí)施日期:	2004-3-23
標(biāo)準(zhǔn)狀態(tài):	valid
替代舊標(biāo)準(zhǔn):	JJG 617-1989 數(shù)字溫度指示調(diào)節(jié)儀檢定規(guī)程
翻譯語(yǔ)言:	英文
文件格式:	PDF
中文字符數(shù):	20,000 字
翻譯價(jià)格(元):	600.0
交付時(shí)間:	付款后 1 個(gè)工作日

(I) Instrument reading part 1 Appearance 1.1 Appearance and structure of the instrument shall be intact. Specific marks for the name, model, specification, measuring range, graduation number, manufacturer's name or brand, delivery number and manufacturing date shall all be indicated. 1.2 Exposed parts (terminal, panel and control gear, etc.) of the instrument shall be free from looseness and rupture; digital indication panel has no defects, which impact reading. 1.3 When the instrument inclines, the internal components shall not make noise for looseness. 1.4 Control gears and turn-buttons shall have corresponding functions and certain adjustment ranges in the prescribed status. 1.5 Values displayed on the instrument shall be clear and have even brightness and shall not overlap with each other, shall be free from un-brightness and lacking strokes; status display of decimal points, polarity and overload shall be correct. 2 Insulation resistances Insulation resistances between power systems of the instrument, input/output, earthing terminal (or enclosure) (except that the input terminal does not isolate from the output terminal) at an environment temperature of 15~35℃ and a relative humidity of 45%~75% shall not be less than 20MΩ. 3 Insulation strength At a environment temperature of 15~35℃ and a relative humidity of 45%~75%, test voltage specified in Table 1 shall be applied among instrument power system, input/output and earthing terminal (or enclosure) (except that the input terminal does not isolate from the output terminal) for 1 min and shall be free from voltage breakdown or flashover. 4 Basic errors Allowable basic errors of the instrument have three express modes for absolute errors.

I Overview II Technical Requirements III Verification Conditions IV Verification Items and Methods V Treatment of the Verification Results and Verification Periods Appendix 1 Terms and Definitions Appendix 2 Choice List of Verification Method Appendix 3 E, , R and of Thermocouple and Thermal Resistance with Different Graduation Numbers Appendix 4 Value of △ρ Appendix 5 Restriction of ρ Value Measurement with Stopwatch Appendix 6 Verification of Setpoint Error for Time Scale Controlled Instrument with Larger Proportional Range Appendix 7 Graphical Method for Proportional Range, Reset Time, and Rate Time Verification Appendix 8 Format of Verification Record for Digital Temperature Indicators and Controllers