Title:
プロセストランスミッタ及び試験方法
Document Type and Number:
Japanese Patent JP7391195
Kind Code:
B2
Abstract:
A process transmitter includes a process variable sensor, a test circuit, a switch and a controller. The process variable sensor includes a sensor output that is indicative of a sensed process variable. The test circuit is configured to detect a condition of the process variable sensor. The switch is configured to selectively connect the test circuit to the process variable sensor and disconnect the test circuit from the process variable sensor. The controller is configured to obtain a measurement of the process variable, control the switch, detect a condition of the process variable sensor by comparing the sensor output when the test circuit is connected to the process variable sensor to the sensor output when the test circuit is disconnected from the process variable sensor, and communicate the condition in the measurement to an external control unit.
Inventors:
Leworthy, Bennett Leon
Weinhold, Nicholas Aaron
Weinhold, Nicholas Aaron
Application Number:
JP2022517514A
Publication Date:
December 04, 2023
Filing Date:
May 01, 2020
Export Citation:
Assignee:
Rosemount Incorporated
International Classes:
G01L27/00
Domestic Patent References:
| JP743234A | ||||
| JP201435228A |
Foreign References:
| US5631602 | ||||
| US20170343594 |
Attorney, Agent or Firm:
Kiyotaka Sakamoto
Toshiji Tanabe
Toshiji Tanabe