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水表的型號代表什么意思

瀏覽次數: 日期:2012-9-29

  普通的機械式水表產品的型號命名應按照1999《工業自動化儀表產品型號編制原則》的要求來進行。      水表產品型號的組成一般如圖1所示。
  第一節中用大寫漢語拼音字母表示,其中第一位是產品所屬的大類,即水表屬于流量儀表的大類別,用“L”表示,第二位是產品所屬的小類,即水表,用“x”表示,第三、四位表示該產品的工作原理、結構、功能、特點等。詳細規定見表1。
  表一1水表型號命書的符號含義
  第二節用阿拉伯數字和字母的組合來表示,反映水表的公稱口徑、指示裝置形式和產品的設計順序號(旋翼式水表)等。設計順序號中:
  A代表基型、七位指針、組合葉輪、標度1L;
  B代表組合葉輪、8位指針、最小檢定分度1L;
  C代表整體葉輪、8位指針、最小檢定分度0.1L;
  E代表整體葉輪、4位指針4位字輪組合式計數器、最小檢定分度0.1L。
  其中A型表是原統一設計水表第一次改進設計型。1988年,國家經貿委發文,將這種七位指針式的基表型水表列人淘汰產品目錄,現已不再生產。
  常見的戶用水表型號舉例說明:
  LXS一15c表示公稱口徑為15 mm的旋翼式冷水水表,整體葉輪,計數器為8位指針;
  LXSR - 20E表示公稱口徑20 mm的旋翼式熱水水表,整體葉輪,計數器為4位指針4位字輪組合式;
  LXSL - 25E表示公稱口徑25 mm的旋翼式立式冷水水表,整體葉輪,計數器為4位指針4位字輪組合式。
  值得一提的是,近年來,由于管理方式發生了變化,測量和電子技術發展較快,水表的新產品大量涌現出來。一些企業對水表產品型號的命名出現了一定程度的混亂,有些企業不再.采用行業標準進行產品型號命名,而是制定企業標準或內部技術規范來說明。
  應該說,型號命名的規范是有利于行業管理和產品比較的,這些問題已經引起了有一關管理部門的注意,將在工作的實踐中逐步的解決。

所屬類別: 儀表常識

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