发明名称 |
Two wire transmitter with isolated can output |
摘要 |
A process variable transmitter that preferably includes a transmitter output circuit that provides bidirectional HART and controller area network communication transceiver lines. The transmitter output circuit also includes sensor circuit interface contacts. An isolated circuit couples to the sensor circuit interface contacts. The isolated circuit includes sensor circuitry sensing a process variable. The isolated circuit further comprises a galvanic isolation barrier galvanically isolating the sensor circuitry from the HART and controller area network transceiver lines. A stacked power supply provides power management. Other aspects may include a controller area network current limiter diagnostic output, timed sequencing of microcontroller startup and shutdown, a local operator interface and power management. |
申请公布号 |
US8208581(B2) |
申请公布日期 |
2012.06.26 |
申请号 |
US20100850995 |
申请日期 |
2010.08.05 |
申请人 |
WESTFIELD BRIAN LEE;ORTH KELLY MICHAEL;ROSEMOUNT INC. |
发明人 |
WESTFIELD BRIAN LEE;ORTH KELLY MICHAEL |
分类号 |
G01L19/08;H04L27/00;G01D3/08;G01D11/24;G08C19/02 |
主分类号 |
G01L19/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|