CJ 128-2007 Translated English of Chinese Standard. CJ128-2007: Heat maters [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2015 M09 5 - 54 páginas This Standard specifies terms and definitions, technical characteristic, requirement, test method, test rules, marking, packing, and storage of heat meters. |
Contenido
| 5 | |
Requirements | 12 |
Inspection rules | 22 |
Annex B Normative Photoelectric interface | 29 |
Normative Test and calculation for metering accuracy of heat meter | 47 |
Annex G Normative Test and calculation of flow sensor accuracy | 53 |
Términos y frases comunes
according to formula Add the requirements Admissible pressure loss ball valve basic error calculated according Class C Environment communication protocol Connection box density and enthalpy display resolution Displayed value DL type Electrical insulating Electromagnetic compatibility Electrostatic discharge element platinum resistance element Temperature element error limit exceed the error Exit-factory inspection Figure C.13 flow sensor accuracy flow-rate 1.19min heat exchange system heat quantity i-th measuring point i-th point j-th inspection items installed kg/m³ kJ/kg length magnetic field magnetic-iron meet the provisions meet the requirements meter shall meet metering accuracy minimum temperature difference nominal diameter Outlet water temperature pairing temperature sensor permanent flow-rate photoelectric interface pipe Protecting tube provided by enclosure qmax read-write head Relative error requirements of Annex requirements of GB requirements of Table screw thread Temperature element platinum temperature element Temperature temperature sensor pair Test and calculation Test methods transmitter tube for temperature type approval test variation ratio voltage water flowing