CA962089A - Electronic spirometer with sensing thermistor temperature compensation - Google Patents

Electronic spirometer with sensing thermistor temperature compensation

Info

Publication number
CA962089A
CA962089A CA144,196A CA144196A CA962089A CA 962089 A CA962089 A CA 962089A CA 144196 A CA144196 A CA 144196A CA 962089 A CA962089 A CA 962089A
Authority
CA
Canada
Prior art keywords
temperature compensation
thermistor temperature
sensing thermistor
electronic spirometer
spirometer
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.)
Expired
Application number
CA144,196A
Other versions
CA144196S (en
Inventor
Michael R. Utenick
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.)
Sandoz Patent Ltd
Original Assignee
Sandoz Patent 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 Sandoz Patent Ltd filed Critical Sandoz Patent Ltd
Application granted granted Critical
Publication of CA962089A publication Critical patent/CA962089A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/087—Measuring breath flow
    • A61B5/0878—Measuring breath flow using temperature sensing means

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Pulmonology (AREA)
  • General Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physiology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring Volume Flow (AREA)
CA144,196A 1971-06-11 1972-06-08 Electronic spirometer with sensing thermistor temperature compensation Expired CA962089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15238471A 1971-06-11 1971-06-11

Publications (1)

Publication Number Publication Date
CA962089A true CA962089A (en) 1975-02-04

Family

ID=22542689

Family Applications (1)

Application Number Title Priority Date Filing Date
CA144,196A Expired CA962089A (en) 1971-06-11 1972-06-08 Electronic spirometer with sensing thermistor temperature compensation

Country Status (8)

Country Link
JP (1) JPS56150507U (en)
CA (1) CA962089A (en)
CH (1) CH549218A (en)
DE (1) DE2227067A1 (en)
FR (1) FR2141312A5 (en)
GB (1) GB1397113A (en)
IT (1) IT956445B (en)
SU (1) SU508161A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444511C3 (en) * 1974-09-18 1981-07-30 Volkswagenwerk Ag, 3180 Wolfsburg Thermal flow meter for gaseous media
JPS5543447A (en) * 1978-09-22 1980-03-27 Hitachi Ltd Hot-wire type flow rate measuring device
FR2459962A1 (en) * 1979-06-25 1981-01-16 Assistance Tech Med Hot wire gas flow detector - contains comparator and amplifier in servo loop to maintain temp. constant and can measure low flow rates
JPS5618721A (en) * 1979-07-24 1981-02-21 Hitachi Ltd Air flow meter
FR2667147A1 (en) * 1990-09-25 1992-03-27 Cit Alcatel LIQUID LEVEL DETECTOR.
NL9201906A (en) * 1992-11-02 1994-06-01 Huiberts Albertus T Method and device for measuring the flow rate of a medium flow.

Also Published As

Publication number Publication date
DE2227067A1 (en) 1973-01-04
SU508161A3 (en) 1976-03-25
CH549218A (en) 1974-05-15
JPS56150507U (en) 1981-11-11
FR2141312A5 (en) 1973-01-19
IT956445B (en) 1973-10-10
GB1397113A (en) 1975-06-11

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