JPS6465419A - Liquid level detector - Google Patents

Liquid level detector

Info

Publication number
JPS6465419A
JPS6465419A JP22157987A JP22157987A JPS6465419A JP S6465419 A JPS6465419 A JP S6465419A JP 22157987 A JP22157987 A JP 22157987A JP 22157987 A JP22157987 A JP 22157987A JP S6465419 A JPS6465419 A JP S6465419A
Authority
JP
Japan
Prior art keywords
temperature
liquid level
detecting element
level position
application
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22157987A
Other languages
Japanese (ja)
Inventor
Junji Matsushima
Masahiro Kobayashi
Noboru Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP22157987A priority Critical patent/JPS6465419A/en
Publication of JPS6465419A publication Critical patent/JPS6465419A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE:To expand the application temperature range of the detecting device by judging a liquid level position corresponding to variation in the temperature of a temperature detecting element. CONSTITUTION:The temperature detecting element 4 indicates a basic temperature variation cycle where the temperature returns almost to starting temperature from a nearly saturation state of a temperature rise by the intermittent voltage application and application stop of a voltage applying means 20 (heating means). Then an arithmetic means 14 calculates the temperature deviation of the temperature detecting element 4 between the start and end of a period in the same intermittent cycle. Further, a deciding means 17 compares the temperature deviation with a threshold value for liquid level position decision making which is set by a threshold value setting means 16 to decide whether the liquid level position is above or below the temperature detecting element 4. Even if the heating value of the temperature detecting element 4 varies with its temperature to cause both air and liquid temperature deviations to vary, the misdetection of the liquid level position is eliminated since the threshold value setting means 16 sets a value between the temperature deviation in both air and liquid atmospheres, thereby expanding the application temperature range of the device.
JP22157987A 1987-09-04 1987-09-04 Liquid level detector Pending JPS6465419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22157987A JPS6465419A (en) 1987-09-04 1987-09-04 Liquid level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22157987A JPS6465419A (en) 1987-09-04 1987-09-04 Liquid level detector

Publications (1)

Publication Number Publication Date
JPS6465419A true JPS6465419A (en) 1989-03-10

Family

ID=16768954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22157987A Pending JPS6465419A (en) 1987-09-04 1987-09-04 Liquid level detector

Country Status (1)

Country Link
JP (1) JPS6465419A (en)

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