液面スイッチ
Thread Content
すみません、どの液面スイッチが2線式で、どれが4線式なのでしょうか？
機械式接点タイプには、あなたが言う「線制」という表現はありません；音叉式電子回路で、4線式/3線式/2線式がすべてあります
音叉式の電子タイプには2線式のものはありますか？
下の画像はRosemount™ 2120レベルスイッチの取扱説明書の配線部分で、ご覧いただけます
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