Title:
【発明の名称】コリオリ流量計の本質的に安全な信号調整装置
Document Type and Number:
Japanese Patent JP2003512612
Kind Code:
A
Abstract:
Meter electronics for a Coriolis flowmeter capable of being intrinsically safe. A signal conditioner receives power from a power supply in a host system remote from the signal conditioner. Drive circuitry in the signal conditioner generates a drive signal and applies the drive signal to a driver affixed to at least one conduit of the Coriolis flowmeter. Pick-off signal conditioning circuitry in the signal conditioner receives input signals from a first pick-off sensor and a second pick-off sensor affixed to the at least one conduit of the Coriolis flowmeter, generates information indicating properties of a material flowing through the conduit from the input signals, and transmits output signals containing the information to the host system. Host-side protection circuitry in the signal conditioner prevents power in excess of an intrinsically safe threshold from being applied to wires connecting the signal conditioner to the host system and flowmeter assembly protection circuitry in said signal conditioner prevents power in excess of the intrinsically safe threshold from being applied to wires connecting the signal conditioner to the driver, the first pick-off sensor, and the second pick-off sensor.
Inventors:
Mansfield, William M
Zolock, michael jay
Zolock, michael jay
Application Number:
JP2001532063A
Publication Date:
April 02, 2003
Filing Date:
September 26, 2000
Export Citation:
Assignee:
Micro Motion Incorporated
International Classes:
G01F1/84; H02H9/00; (IPC1-7): G01F1/84
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)