发明名称 |
INTRINSICALLY SAFE EXPLOSION-PROOF SENSOR CIRCUIT |
摘要 |
<p>An intrinsically safe explosion-proof sensor circuit is realized through a simple system. An intrinsically safe explosion-proof sensor signal processing circuit is characterized by comprising a sensor section for measuring a physical quantity of an object disposed in a dangerous place and a safety keeping circuit disposed in an explosion-proof case in a non-dangerous or a dangerous place and provided with driving and feedback operational amplifier circuits and a current limiting resistor connected in series with each signal line connected with the sensor section and with the output terminal and the negative input terminal of the corresponding operational amplifier.</p> |
申请公布号 |
EP1403832(A1) |
申请公布日期 |
2004.03.31 |
申请号 |
EP20010947842 |
申请日期 |
2001.07.04 |
申请人 |
YAMATAKE CORPORATION |
发明人 |
MASUDA, TAKASHI;YOSHIKAWA, YASUHIDE |
分类号 |
H02H9/00;(IPC1-7):G08C19/00 |
主分类号 |
H02H9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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