公开(公告)号：CA2282536A1

公开(公告)日：1998-08-27

申请号：CA2282536

申请日：1998-02-23

Applicant: ROSEMOUNT INC

Inventor： ROSS JAMES P ,  TETZLAFF DAVID E

IPC: G01B5/00 ,  G01L7/00 ,  G01V1/00 ,  G06F9/46 ,  G08G1/01 ,  H03M1/12 ,  H04K1/00

Abstract: A transmitter (10) for use in a process control setting includes a sensor (18) adapted to couple to a process and provide a sensor output (19) related to a parameter of the process. A modulator (50) coupled to the sensor output (19) responsively provides a digital bit stream output (52) representative of the sensor output (19). A filter (54) provides a current decimation output. A comparator (56) compares a previous decimation output with the current decimation output. Circuitry (28) is provided for transmitting an output related to the parameter based upon the current decimation.