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FR2417103A1 - MEANS OF MEASURING THE HUMIDITY CONTENT OF EXHAUST FUMES IN A DRYING PROCESS - Google Patents

MEANS OF MEASURING THE HUMIDITY CONTENT OF EXHAUST FUMES IN A DRYING PROCESS

Info

Publication number
FR2417103A1
FR2417103A1 FR7903528A FR7903528A FR2417103A1 FR 2417103 A1 FR2417103 A1 FR 2417103A1 FR 7903528 A FR7903528 A FR 7903528A FR 7903528 A FR7903528 A FR 7903528A FR 2417103 A1 FR2417103 A1 FR 2417103A1
Authority
FR
France
Prior art keywords
measuring
exhaust fumes
drying process
receivers
humidity content
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
FR7903528A
Other languages
French (fr)
Other versions
FR2417103B1 (en
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.)
LEINO ILKKA
Original Assignee
LEINO ILKKA
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 LEINO ILKKA filed Critical LEINO ILKKA
Publication of FR2417103A1 publication Critical patent/FR2417103A1/en
Application granted granted Critical
Publication of FR2417103B1 publication Critical patent/FR2417103B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (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 By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Moyen de mesure de la teneur en humidité des fumées d'échappement d'un procédé de séchage, par exemple, de machine à papier. Un moyen de mesure de la teneur en humidité des fumées d'échappement d'un procédé de séchage comprend un émetteur acoustique et deux récepteurs, qui sont montés de façon que les fumées d'échappement passent entre l'émetteur et les récepteurs, et que les récepteurs se trouvent à des distances différentes de l'émetteur. La présente invention est basée sur le phénomène suivant lequel la longueur d'onde acoustique varie avec la teneur en humidité du milieu de transmission. Application aux procédés de séchage.A means of measuring the moisture content of exhaust fumes from a drying process, for example, from a paper machine. A means for measuring the moisture content of the exhaust fumes from a drying process comprises an acoustic transmitter and two receivers, which are mounted so that the exhaust fumes pass between the emitter and the receivers, and that the receivers are at different distances from the transmitter. The present invention is based on the phenomenon that the acoustic wavelength varies with the moisture content of the transmission medium. Application to drying processes.

FR7903528A 1978-02-10 1979-02-12 MEANS OF MEASURING THE HUMIDITY CONTENT OF EXHAUST FUMES IN A DRYING PROCESS Granted FR2417103A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI780450A FI54977C (en) 1978-02-10 1978-02-10 MAINTENANCE FOR FUNCTIONAL OPERATING ACTIVITIES WITH ENTRY

Publications (2)

Publication Number Publication Date
FR2417103A1 true FR2417103A1 (en) 1979-09-07
FR2417103B1 FR2417103B1 (en) 1984-02-10

Family

ID=8511459

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7903528A Granted FR2417103A1 (en) 1978-02-10 1979-02-12 MEANS OF MEASURING THE HUMIDITY CONTENT OF EXHAUST FUMES IN A DRYING PROCESS

Country Status (5)

Country Link
DE (1) DE2904583A1 (en)
FI (1) FI54977C (en)
FR (1) FR2417103A1 (en)
GB (1) GB2017299B (en)
SE (1) SE7901190L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI74547C (en) * 1986-05-02 1988-02-08 Valtion Teknillinen Method for determining a binary gas mixture mixing prop orthion.
SE0201073D0 (en) * 2002-04-09 2002-04-09 Siemens Elema Ab Acoustic Gas Monitor
EP2221613A1 (en) * 2009-02-19 2010-08-25 Electrolux Home Products Corporation N.V. An apparatus and a method for estimating the air humidity within an oven cavity

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB805544A (en) * 1956-01-06 1958-12-10 Parsons & Co Sir Howard G Improvements in or relating to sonic gas analysers
US3859846A (en) * 1971-12-26 1975-01-14 Tokyo Keikio Tokyo Keiki Co Lt Ultrasonic interface meter
US4059987A (en) * 1976-10-20 1977-11-29 Texaco Inc. Apparatus and method for measuring the water content of oil flowing in a pipe
DE2732074A1 (en) * 1976-07-16 1978-01-19 Nippon Kokan Kk DEVICE FOR DETERMINING CHANGES IN THE PARAMETERS OF A LIQUID FLOWING IN A PIPELINE ACCORDING TO THE FEEDBACK (WHISTLE) PROCEDURE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB805544A (en) * 1956-01-06 1958-12-10 Parsons & Co Sir Howard G Improvements in or relating to sonic gas analysers
US3859846A (en) * 1971-12-26 1975-01-14 Tokyo Keikio Tokyo Keiki Co Lt Ultrasonic interface meter
DE2732074A1 (en) * 1976-07-16 1978-01-19 Nippon Kokan Kk DEVICE FOR DETERMINING CHANGES IN THE PARAMETERS OF A LIQUID FLOWING IN A PIPELINE ACCORDING TO THE FEEDBACK (WHISTLE) PROCEDURE
US4059987A (en) * 1976-10-20 1977-11-29 Texaco Inc. Apparatus and method for measuring the water content of oil flowing in a pipe

Also Published As

Publication number Publication date
FR2417103B1 (en) 1984-02-10
GB2017299B (en) 1982-08-18
SE7901190L (en) 1979-08-11
FI54977B (en) 1978-12-29
FI54977C (en) 1979-04-10
DE2904583A1 (en) 1979-08-16
GB2017299A (en) 1979-10-03

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Legal Events

Date Code Title Description
ST Notification of lapse