发明名称 |
INDUSTRIAL PROCESS VARIABLE TRANSMITTER WITH ISOLATED POWER SCAVENGING INTRINSICALLY SAFE PULSE OUTPUT CIRCUITRY |
摘要 |
An industrial process variable transmitter includes a process variable sensor configured to sense a process variable. Measurement circuitry is coupled to the process variable sensor and provides a measured output as a function of the process variable. Output circuitry includes a loop connection configured to couple to a process control loop. An optical sensor receives the measured output from the measurement circuitry. A switching device applies pulses to the process control loop in response to an output from the optical sensor. Power supply circuitry powers the optical sensor, a comparator, and/or the switching device with power received from the process control loop and loop connection. |
申请公布号 |
EP3050313(A1) |
申请公布日期 |
2016.08.03 |
申请号 |
EP20140755479 |
申请日期 |
2014.08.04 |
申请人 |
ROSEMOUNT INC. |
发明人 |
HUNTER, KIRK ALLAN;LUCHT, JORDAN DENNIS;DREIER, JARED JAMES;ROVNER, BRUCE DAVID |
分类号 |
H04Q9/00;G01D21/00;G01F1/58 |
主分类号 |
H04Q9/00 |
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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