SE8704939L - Air flow meter testing equipment - has master meter, both meters being exposed to equal air currents and their output signals compared - Google Patents

Air flow meter testing equipment - has master meter, both meters being exposed to equal air currents and their output signals compared

Info

Publication number
SE8704939L
SE8704939L SE8704939A SE8704939A SE8704939L SE 8704939 L SE8704939 L SE 8704939L SE 8704939 A SE8704939 A SE 8704939A SE 8704939 A SE8704939 A SE 8704939A SE 8704939 L SE8704939 L SE 8704939L
Authority
SE
Sweden
Prior art keywords
output signals
air flow
meters
exposed
master meter
Prior art date
Application number
SE8704939A
Other languages
Swedish (sv)
Other versions
SE8704939D0 (en
Inventor
L Hansson
Original Assignee
Volvo Ab
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 Volvo Ab filed Critical Volvo Ab
Priority to SE8704939A priority Critical patent/SE8704939L/en
Publication of SE8704939D0 publication Critical patent/SE8704939D0/en
Publication of SE8704939L publication Critical patent/SE8704939L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A test object (21) and the master meter (20) are placed in an air channel to a fan unit, and are connected to an instrument (24) which compares the output signals from both of them, indicating any difference which may arise. Components (10, 11, 17, 18) are provided for fixing the object in the air channel which (11) is divided into at least three parts (5), and axialy displaceable units (15-18) permit coupling of the master meter and the test object between the channel parts. A manually adjustable damper is fitted in the air channel to regulate air flow. The comparative instrument (24) is an electronic box with voltmeter, ohmmeter and so-called burn-off functions. This latter function is tested by pressing a button (27). The electronic box then simulates a fresh starting procedure, and if the burn-off function is fault-free, the filament in the test object glows for approx. 1 second, this being indicated by a light diode (28) illuminating on the electronic box.
SE8704939A 1987-12-10 1987-12-10 Air flow meter testing equipment - has master meter, both meters being exposed to equal air currents and their output signals compared SE8704939L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8704939A SE8704939L (en) 1987-12-10 1987-12-10 Air flow meter testing equipment - has master meter, both meters being exposed to equal air currents and their output signals compared

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704939A SE8704939L (en) 1987-12-10 1987-12-10 Air flow meter testing equipment - has master meter, both meters being exposed to equal air currents and their output signals compared

Publications (2)

Publication Number Publication Date
SE8704939D0 SE8704939D0 (en) 1987-12-10
SE8704939L true SE8704939L (en) 1989-06-11

Family

ID=20370564

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8704939A SE8704939L (en) 1987-12-10 1987-12-10 Air flow meter testing equipment - has master meter, both meters being exposed to equal air currents and their output signals compared

Country Status (1)

Country Link
SE (1) SE8704939L (en)

Also Published As

Publication number Publication date
SE8704939D0 (en) 1987-12-10

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