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JPS5746147A - Measuring device for dew point and frost point - Google Patents

Measuring device for dew point and frost point

Info

Publication number
JPS5746147A
JPS5746147A JP12253280A JP12253280A JPS5746147A JP S5746147 A JPS5746147 A JP S5746147A JP 12253280 A JP12253280 A JP 12253280A JP 12253280 A JP12253280 A JP 12253280A JP S5746147 A JPS5746147 A JP S5746147A
Authority
JP
Japan
Prior art keywords
dew
output
frost
comparator
signal
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.)
Granted
Application number
JP12253280A
Other languages
Japanese (ja)
Other versions
JPS6341417B2 (en
Inventor
Masahiro Otani
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP12253280A priority Critical patent/JPS5746147A/en
Publication of JPS5746147A publication Critical patent/JPS5746147A/en
Publication of JPS6341417B2 publication Critical patent/JPS6341417B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To enable the shortening of a time period wherein measurement is made impossible due to the attachment of supercooled dew by converting the supercooled dew attaching to the detecting surface of a sensor forcedly to frost. CONSTITUTION:A set-value changing part 9 with a polarity increasing the set values of the amount of dew and frost is connected between a temperature detecting part 7 and an adder 5. This set-value changing part 9 is composed of two comparators Ca and Cb, a flip-flop FF and a converter CNV, and to one input terminal (-) of the comparator Ca the output of the temperature detecting part 7 is added, while to the other input terminal (+) thereof a lowest-limit value setting signal TL is added. Meanwhile, to one input terminal (+) of the comparator Cb the output of the temperature detecting part 7 is added, while to the other input terminal (-) thereof a supremum value setting signal TH is added. The flip-flop FF is set by the output of the comparator Ca and reset by the output of the comparator Cb. The converter CNV converts the output signal of FF into a signal from matched with the form of a signal setting the amount of dew and frost, adding the same to the adder 5 as a setting signal having a prescribed magnitude.
JP12253280A 1980-09-04 1980-09-04 Measuring device for dew point and frost point Granted JPS5746147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12253280A JPS5746147A (en) 1980-09-04 1980-09-04 Measuring device for dew point and frost point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12253280A JPS5746147A (en) 1980-09-04 1980-09-04 Measuring device for dew point and frost point

Publications (2)

Publication Number Publication Date
JPS5746147A true JPS5746147A (en) 1982-03-16
JPS6341417B2 JPS6341417B2 (en) 1988-08-17

Family

ID=14838181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12253280A Granted JPS5746147A (en) 1980-09-04 1980-09-04 Measuring device for dew point and frost point

Country Status (1)

Country Link
JP (1) JPS5746147A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63167243U (en) * 1987-04-22 1988-10-31
JP2007292275A (en) * 2006-03-31 2007-11-08 Synztec Co Ltd Mount bush
WO2009088108A1 (en) * 2007-12-14 2009-07-16 Korea Research Institute Of Standards And Science The measurement method of distinguishing dew and frost point using quartz crystal microbalance dew-point sensor in low temperature
JP2021073458A (en) * 2016-06-08 2021-05-13 国立研究開発法人物質・材料研究機構 Dew point measurement method and dew point measurement device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148485A (en) * 1977-05-31 1978-12-25 Yokogawa Hokushin Electric Corp Dew point and frost point detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148485A (en) * 1977-05-31 1978-12-25 Yokogawa Hokushin Electric Corp Dew point and frost point detector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63167243U (en) * 1987-04-22 1988-10-31
JP2007292275A (en) * 2006-03-31 2007-11-08 Synztec Co Ltd Mount bush
WO2009088108A1 (en) * 2007-12-14 2009-07-16 Korea Research Institute Of Standards And Science The measurement method of distinguishing dew and frost point using quartz crystal microbalance dew-point sensor in low temperature
KR100926461B1 (en) 2007-12-14 2009-11-13 한국표준과학연구원 Method for the Measurement of Store and Dew Point at Low Temperature Using Crystal Microbalance Dew Point Sensor
JP2021073458A (en) * 2016-06-08 2021-05-13 国立研究開発法人物質・材料研究機構 Dew point measurement method and dew point measurement device
US11454603B2 (en) 2016-06-08 2022-09-27 National Institute For Materials Science Dew point measuring method and dew point measuring device

Also Published As

Publication number Publication date
JPS6341417B2 (en) 1988-08-17

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