发明名称 |
RF ADAPTER FOR FIELD DEVICE WITH LOOP CURRENT BYPASS |
摘要 |
<p>A wireless adapter for use with a two-wire process control loop (22) is configured to couple to a process field device (12) in an industrial process control system. The wireless adapter (30) is coupled to the two-wire process control loop (22) and provides wireless communication to the process field device (12). The adapter (30) includes first and second loop terminals configured to couple in series with the two-wire process control loop (22). Wireless communication circuitry (155) is coupled to the first and second loop terminals and is adapted to provide wireless communication to the process field device (12). Loop current bypass circuitry (164) is electrically connected between the first and second loop terminals and is configured to provide a loop current path therebetween in response to an open circuit in wireless communication circuitry (155).</p> |
申请公布号 |
CA2726534(A1) |
申请公布日期 |
2009.12.23 |
申请号 |
CA20092726534 |
申请日期 |
2009.06.17 |
申请人 |
ROSEMOUNT INC. |
发明人 |
KIELB, JOHN A.;WESTFIELD, BRIAN L. |
分类号 |
H04L12/40;G05B19/418 |
主分类号 |
H04L12/40 |
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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