Title:
LIQUID LEVEL DETECTING SENSOR
Document Type and Number:
Japanese Patent JPH01140025
Kind Code:
A
Abstract:
PURPOSE:To enable the detection or the like of an infiltrating liquid without suffering the effect of a state of transmitting no light caused by the freezing or the like of water, by providing a communication tube and others and by forming a sensor head supporting element wherein a sensor head is incorporated so that light can be transmitted to the inside of one end of the communication tube. CONSTITUTION:A liquid level detecting sensor is formed in such a manner that a sensor head supporting element 18 wherein a sensor head 15 is incorporated is inserted into a communication tube 1 kept in a prescribed humidity range so that light can be transmitted to a hollow part 20 of the communication tube 1, and that the communication tube is covered with an outer cylinder 5 having liquid-passing holes. When a liquid to be detected infiltrates through an opening 2 of the communication tube 1, according to this constitution, a charging liquid 19 in the hollow part 20 inside the tube 1 rises corresponding to the level of the infiltrating liquid to be detected, and when the liquid 19 reaches the fore end of the sensor head 15, the infiltrating liquid can be detected without fail.
Inventors:
TAMURA KUNIMITSU
TAKAHASHI YASUHIKO
ISHIZAKA MASUO
TAKAHASHI YASUHIKO
ISHIZAKA MASUO
Application Number:
JP29942187A
Publication Date:
June 01, 1989
Filing Date:
November 26, 1987
Export Citation:
Assignee:
TATSUTA DENSEN KK
International Classes:
G01F23/292; G01F23/28; (IPC1-7): G01F23/28
Attorney, Agent or Firm:
Hideo Fujimoto