| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid unstable display in the vicinity of zero flow while directly controlling a display unit by a head part, as to an amplifier separate type flow sensor device equipped with the display unit even at the head part. <P>SOLUTION: The head part 31 is equipped with a display control circuit 340 for outputting a signal for display by processing a detection signal from the flow sensor, and a first display unit 28b for performing prescribed display according to the output signal of the control circuit 340. A processor of an amplifier part causes a flow display unit to display a detected flow level obtained from a flow detection signal received from the head part 31 while sending out a display suppressing signal to the head part 31 in the case where the flow level is lower than a threshold. The control circuit 340 of the head part stops display on the display unit 28b on receiving the suppressing signal independently of output voltage of a differential amplification circuit 312 which is the detection signal from the flow sensor. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
