GB/T 6968-1997膜式煤气表.pdf

ICS75-180.30 N 12 噶8 中 华 人 民 共 和 国 国 家 标 准 GB/T 6968一 1997 eqvOIMLR31:1995 膜 式 煤 气 表 Diaphragmgasmeters 1997一07一29发布 1998一08一01实施 国 家 技 术 监 督 局 发 布 GB/T 6968一 1997 目 次 前言 ·················································································································…… OIML前言 ·········································································································…… 1 范围 ··············································································································…… 2 术语 ·······························，···············································································…… 3 流量范围 ·········································································································…… 4 结构 ·············································································································…… 5 指示装置和测试元件 ······························································.········…… 6 最大允许误差 ··························。······································································…… 7 密封性 ，····，················································。·······························。·。···················…… S 压力损失 ···········································································。···。························…… 9 耐久性 ······································。·····················。·············································…… 10 检验规则.· 附录A(标准的附录) 型式检验和出厂检验的程序和方法 GB/T 6968一1997 前 言 本标准是根据国际法制计量组织OIMLR31-1995膜《式煤气表》对GB6968-86《家用煤气表》进 行修订的，在技术内容上与该国际建议等效。 OIMLR31是根据膜式煤气表特点而制定的专业性强的国际建议。该建议在涉及一些通用技术要 求时，引用