NL191246B - Device for monitoring the velocity of a gas flow in a channel. - Google Patents

Device for monitoring the velocity of a gas flow in a channel.

Info

Publication number
NL191246B
NL191246B NL8402448A NL8402448A NL191246B NL 191246 B NL191246 B NL 191246B NL 8402448 A NL8402448 A NL 8402448A NL 8402448 A NL8402448 A NL 8402448A NL 191246 B NL191246 B NL 191246B
Authority
NL
Netherlands
Prior art keywords
velocity
monitoring
channel
gas flow
gas
Prior art date
Application number
NL8402448A
Other languages
Dutch (nl)
Other versions
NL8402448A (en
NL191246C (en
Original Assignee
Securiton Ag
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 Securiton Ag filed Critical Securiton Ag
Publication of NL8402448A publication Critical patent/NL8402448A/en
Publication of NL191246B publication Critical patent/NL191246B/en
Application granted granted Critical
Publication of NL191246C publication Critical patent/NL191246C/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
    • G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Measuring Volume Flow (AREA)
NL8402448A 1983-08-30 1984-08-08 Device for monitoring the velocity of a gas flow in a channel. NL191246C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833331203 DE3331203A1 (en) 1983-08-30 1983-08-30 Device for monitoring the velocity of a gas flow in a duct
DE3331203 1983-08-30

Publications (3)

Publication Number Publication Date
NL8402448A NL8402448A (en) 1985-03-18
NL191246B true NL191246B (en) 1994-11-01
NL191246C NL191246C (en) 1995-04-03

Family

ID=6207778

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8402448A NL191246C (en) 1983-08-30 1984-08-08 Device for monitoring the velocity of a gas flow in a channel.

Country Status (7)

Country Link
AT (1) AT388454B (en)
BE (1) BE900472A (en)
CH (1) CH666356A5 (en)
DE (1) DE3331203A1 (en)
FR (1) FR2551215B1 (en)
IT (1) IT1198912B (en)
NL (1) NL191246C (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8800634A (en) * 1988-03-15 1989-10-02 Westinghouse Elektrotechniek E DEVICE FOR MONITORING THE EXHAUST PIPE (S) OF A SMOKE / GAS DETECTION SYSTEM.
DE3811431A1 (en) * 1988-04-05 1989-10-19 Maria Dobosne Gyulai Sensor arrangement for detecting gaseous components
DE4236559A1 (en) * 1992-10-02 1994-04-07 Kobold Klaus Calorimetric flow switch calibration method
DE4428694C2 (en) 1994-08-12 1996-06-20 Wagner Alarm Sicherung Air pressure compensated fire detection device and method
JPH0989618A (en) * 1995-09-25 1997-04-04 Smc Corp Flow-rate detection switch
DE29518042U1 (en) * 1995-11-14 1996-01-25 Wagner Alarm Sicherung Fire detector
DE19605637C1 (en) * 1996-02-15 1997-05-07 Wagner Alarm Sicherung Air current monitoring in fire alarm using two flow sensors
DE19628456C2 (en) * 1996-07-15 2001-03-15 Wagner Alarm Sicherung Air filter
DE19830340C1 (en) * 1998-07-07 1999-11-11 Siemens Ag Regulation of cooling air filters for motors working under icy conditions
DE10140510B4 (en) * 2001-08-17 2004-02-05 Carl Freudenberg Kg Method and device for monitoring the service life of a filter
AU2003902318A0 (en) 2003-05-14 2003-05-29 Vision Fire And Security Pty Ltd Improved Sensing Apparatus And Method
AU2004274988B2 (en) * 2003-09-24 2009-07-23 Garrett Thermal Systems Limited Method and apparatus for determining operational condition of pollution monitoring equipment
CA2539208C (en) 2003-09-24 2016-01-12 Vision Fire & Security Pty Ltd Method and apparatus for determining operational condition of pollution monitoring equipment
FR2871875B1 (en) * 2004-06-16 2006-07-28 Air Liquide METHOD FOR CONTROLLING VENTILATION IN A CONDUIT
DE102004044094A1 (en) 2004-09-09 2006-03-30 Hekatron Vertriebs Gmbh Intake fire detector and method of operation
DE102005051123B4 (en) * 2005-10-24 2007-10-18 Smartgas Mikrosensorik Gmbh Gas alarm with a function to detect tampering and to monitor a gas alarm
DE102007013295A1 (en) * 2007-03-16 2008-09-18 Aoa Apparatebau Gauting Gmbh smoke detector

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD66378A (en) *
DD67054A (en) *
US2947938A (en) * 1954-04-09 1960-08-02 Victory Engineering Corp Electrothermal measuring apparatus and method for the calibration thereof
DE1061627B (en) 1956-02-16 1959-07-16 Pyrene Co Ltd United smoke tracer and fire extinguishing system
GB966343A (en) * 1961-12-05 1964-08-12 British Petroleum Co Improvements relating to gas testing
DE1473190B1 (en) * 1963-10-09 1970-01-15 Schaller Dipl Ing Werner Device for monitoring the flow of a medium
GB1086742A (en) * 1964-03-13 1967-10-11 English Electric Co Ltd Gas flow detectors
US3900819A (en) * 1973-02-07 1975-08-19 Environmental Instruments Thermal directional fluid flow transducer
US3992940A (en) * 1973-11-02 1976-11-23 Chrysler Corporation Solid state fluid flow sensor
SE391036B (en) * 1973-12-03 1977-01-31 Elektronik Konstruktions Ab DEVICE FOR SATURATION AND / OR MONITORING THE FLOW SPEED OF A FLOWING MEDIUM
US3991613A (en) * 1975-03-10 1976-11-16 Corning Glass Works Sensing element for flow meter
GB1562488A (en) 1975-11-19 1980-03-12 Lucas Industries Ltd Apparatus for indicating rate of ice eccretion
JPS54145166A (en) * 1978-04-10 1979-11-13 Hitachi Ltd Measuring apparatus of suction air flow rates
US4135396A (en) * 1978-04-24 1979-01-23 The Trane Company Temperature compensating fluid velocity sensing apparatus
GB1600988A (en) * 1978-05-08 1981-10-21 Shipowners Cargo Res Assoc Refrigerated containers including airflow indicator
DE2947856A1 (en) * 1979-11-28 1981-07-23 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR MEASURING THE MASS OF A FLOWING MEDIUM
JPS5866018A (en) * 1981-10-16 1983-04-20 Hitachi Ltd Air flowmeter

Also Published As

Publication number Publication date
NL8402448A (en) 1985-03-18
FR2551215A1 (en) 1985-03-01
BE900472A (en) 1985-02-28
IT8409485A0 (en) 1984-08-22
ATA269984A (en) 1988-11-15
CH666356A5 (en) 1988-07-15
FR2551215B1 (en) 1988-08-19
DE3331203A1 (en) 1985-03-14
AT388454B (en) 1989-06-26
DE3331203C2 (en) 1987-05-07
NL191246C (en) 1995-04-03
IT1198912B (en) 1988-12-21

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V1 Lapsed because of non-payment of the annual fee

Effective date: 20020301