【発明の名称】液状又はガス状媒体の体積測定センサ

Title:

【発明の名称】液状又はガス状媒体の体積測定センサ

Document Type and Number:

Japanese Patent JPH04501914

Kind Code:

A

Abstract:

In a sensor (10) for determining the volume of a flowing medium, a piston (12) slides in a tube (11) on which a tapping electrode (15) and on either side of the latter an exciting electrode (13, 14) of length (1a?) are arranged. In the initial position of the piston (12) equal capacitances (C1? and C3?) are generated between the electrodes (13, 14) and the piston (12), the difference between which is then detected via the tapping electrode (15) with the aid of a bridge circuit. If the piston (12) is moved, a voltage (UA?) proportional to the volume is produced via the tapping electrode (15). The sensor is simple and cheap to make, and provides relatively accurate and linear readings.

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Inventors:

Voher, bertort
Schuttain Lechner, Siegbert

Application Number:

JP50199190A

Publication Date:

April 02, 1992

Filing Date:

January 20, 1990

Export Citation:

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Assignee:

ROBERT BOSCH GMBH

International Classes:

G01F1/00; G01F1/56; G01F1/64; G01F3/00; G01F3/16; G01F15/06; (IPC1-7): G01F3/16

Attorney, Agent or Firm:

Toshio Yano (2 outside)

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