商鋪名稱：廈門光沃自動化設備有限公司
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聯系地址：廈門市海滄區滄湖東一里海景奧斯卡
郵編：361000
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商品詳情
IC693MAR590
IC693MAR590
4-20mA和電工標準有關，4-20mA信號制是國際電工委員會(IEC)過程控制系統用模擬信號標準。我國從DDZ-Ⅲ型電動儀表開始采用這一國際標準信號制，儀表傳輸信號采用4-20mA,聯絡信號采用1-5VDC，即采用電流傳輸、電壓接收的信號系統。因為信號起點電流為4mA，為變送器提供了靜態工作電流，同時儀表電氣零點為4mA，不與機械零點重合，這種活零點有利于識別斷電和斷線等故障。
根據模擬信號傳感器的性能選型搜索：
1、兩線制電流/電壓輸出傳感器(無供電電源，由負載提供16—24V配電，輸出4-20mA/0-5V)。
1.1、兩線制無源4-20mA輸入型傳感器，經電流隔離配電器配電后與PLC連接。如圖1所示，稱重、測距傳感器正端接16—24VDC,負端輸出4-20mA電流。
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