Title:
WATER LEVEL SENSOR AND WATER LEVEL CONTROL SYSTEM USING THE SENSOR
Document Type and Number:
Japanese Patent JPH07306078
Kind Code:
A
Abstract:
PURPOSE: To provide a water level sensor for detecting an arbitrary point which can be installed, maintained, and inspected easily and a water level control system using the sensor.
CONSTITUTION: The water level sensor is provided with a pressure sensitive deformation body 12 which is deformed by a liquid pressure introduced from a liquid introduction hole 17 and a differential transformer 15 consisting of a core 15c which is energized and supported by a return spring 14 and at the same time is linked to the pressure sensitive deformation body 12 and coil bodies 15a and 15b for detecting the amount of travel of the core 15c.
Inventors:
WATANABE MAKOTO
Application Number:
JP9971694A
Publication Date:
November 21, 1995
Filing Date:
May 13, 1994
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G01F23/18; G05D9/12; (IPC1-7): G01F23/18; G05D9/12
Attorney, Agent or Firm:
Kazuhide Okada
Previous Patent: Physical property evaluation method and apparatus
Next Patent: WATER LEVEL DETECTION METHOD AND DEVICE
Next Patent: WATER LEVEL DETECTION METHOD AND DEVICE