Title:
【発明の名称】液面計
Document Type and Number:
Japanese Patent JPS6035613
Kind Code:
B2
Abstract:
A resistive fluid detecting means utilizes a probe means having three electrically conductive areas that are interconnected between a power source and an amplifier. The detecting means is particularly useful in detecting the presence or absence of water in a boiler used in a heating plant. The presence of water between two of the electrically conductive areas reduces the resistance of that path so that the amplifier responds and operates an output switch, which in turn can be used to energize a fuel burner for the boiler. If boiler scale builds up on the probe means or if the water or fluid rises too high, the electrically conductive areas shunt current away from the amplifier and allow the output switch to open.
Inventors:
UIRIAMU BII HAMERINKU
Application Number:
JP11734176A
Publication Date:
August 15, 1985
Filing Date:
October 01, 1976
Export Citation:
Assignee:
HONEYWELL INC
International Classes:
G01F23/14; F24H1/18; G01F23/24; (IPC1-7): G01F23/14
Attorney, Agent or Firm:
Matsushita Yoshiharu
Previous Patent: An optical recording medium and an optical information reproduction mode
Next Patent: JPS6035614
Next Patent: JPS6035614