GB2017299A - Device for Measuring the Moisture content of the Exhaust Gas from a Drying Process - Google Patents

Device for Measuring the Moisture content of the Exhaust Gas from a Drying Process

Info

Publication number
GB2017299A
GB2017299A GB7904760A GB7904760A GB2017299A GB 2017299 A GB2017299 A GB 2017299A GB 7904760 A GB7904760 A GB 7904760A GB 7904760 A GB7904760 A GB 7904760A GB 2017299 A GB2017299 A GB 2017299A
Authority
GB
United Kingdom
Prior art keywords
transmitter
exhaust gas
moisture content
measuring
drying process
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
GB7904760A
Other versions
GB2017299B (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 I M
Leino M H
Original Assignee
Leino I M
Leino M H
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 I M, Leino M H filed Critical Leino I M
Publication of GB2017299A publication Critical patent/GB2017299A/en
Application granted granted Critical
Publication of GB2017299B publication Critical patent/GB2017299B/en
Expired 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

A device for measuring the moisture content of the exhaust gas from a drying process comprises an acoustical transmitter (1) and two receivers (2, 3), so mounted that the exhaust gas will pass between transmitter and receiver. The receivers are at different distances from the transmitter. The invention is based on the phenomenon that the wavelength of the sonic energy emitted by the transmitter changes when the moisture content of the medium changes. The frequency emitted by the transmitter (1) is varied to maintain a given phase relationship between the receivers (2, 3). Gas temperature is monitored by a temperature pick up (19). <IMAGE>
GB7904760A 1978-02-10 1979-02-09 Device for measuring the moisture content of the exhaust gas from a drying process Expired GB2017299B (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
GB2017299A true GB2017299A (en) 1979-10-03
GB2017299B GB2017299B (en) 1982-08-18

Family

ID=8511459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7904760A Expired GB2017299B (en) 1978-02-10 1979-02-09 Device for measuring the moisture content of the exhaust gas from 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006703A1 (en) * 1986-05-02 1987-11-05 Valtion Teknillinen Tutkimuskeskus Method for defining the mixture ratio in binary gas mixtures
EP1353173A2 (en) * 2002-04-09 2003-10-15 Siemens-Elema AB Acoustic gas monitor
CN102317769A (en) * 2009-02-19 2012-01-11 伊莱克斯家用产品股份有限公司 An apparatus and a method for estimating the air humidity within an oven cavity

Family Cites Families (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
JPS5310454A (en) * 1976-07-16 1978-01-30 Nippon Kokan Kk Apparatus for detecting change of fluid character by singgaround method
US4059987A (en) * 1976-10-20 1977-11-29 Texaco Inc. Apparatus and method for measuring the water content of oil flowing in a pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006703A1 (en) * 1986-05-02 1987-11-05 Valtion Teknillinen Tutkimuskeskus Method for defining the mixture ratio in binary gas mixtures
EP1353173A2 (en) * 2002-04-09 2003-10-15 Siemens-Elema AB Acoustic gas monitor
EP1353173A3 (en) * 2002-04-09 2006-05-24 Maquet Critical Care AB Acoustic gas monitor
CN102317769A (en) * 2009-02-19 2012-01-11 伊莱克斯家用产品股份有限公司 An apparatus and a method for estimating the air humidity within an oven cavity
CN102317769B (en) * 2009-02-19 2014-08-06 伊莱克斯家用产品股份有限公司 An apparatus and a method for estimating the air humidity within an oven cavity

Also Published As

Publication number Publication date
FI54977C (en) 1979-04-10
SE7901190L (en) 1979-08-11
FR2417103B1 (en) 1984-02-10
FI54977B (en) 1978-12-29
GB2017299B (en) 1982-08-18
FR2417103A1 (en) 1979-09-07
DE2904583A1 (en) 1979-08-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee